Schizonepeta seed screening and separating equipment

Abstract

The utility model relates to schizonepeta seed screening and separating equipment which comprises a screening box, an air blowing assembly and a dust collection assembly, a feeding port and a dust collection port are formed in the top of the screening box, a first-stage screening plate and a plurality of second-stage screening plates are installed in the screening box, the first-stage screening plate and the second-stage screening plates are all arranged in an inclined mode, and the air blowing assembly is connected with the dust collection assembly. The inclination direction of the first-stage screening plate is opposite to the inclination direction of the adjacent second-stage screening plate, the inclination direction of every two adjacent second-stage screening plates is opposite, screening holes are formed in the first-stage screening plate and the second-stage screening plates, and a plurality of discharging pipes are further fixed to the side wall of the screening box. The discharging pipes are communicated with the lower end of the first-stage screening plate and the lower ends of the second-stage screening plates respectively, the air outlet end of the air blowing assembly faces the upper side of the first-stage screening plate, the feeding port is located over the first-stage screening plate, and the inlet end of the dust collection assembly is communicated with the dust collection port. According to the utility model, the technical problem of poor multi-stage screening effect of the existing separation equipment can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to schizonepetae seed processing equipment technical field, especially to a kind of schizonepetae seed screening separation equipment. BACKGROUND

[0002] Schizonepeta is a labiatae schizonepeta plant, with strong aroma. The diameter of schizonepeta seed is usually between 2-5mm, when sowing, the size of seed will directly affect sowing depth and plant product, therefore, schizonepeta seed needs to be screened to remove shriveled grain and some impurities in seed, to ensure seed yield. In prior art, such as the Chinese patent with application number CN202022210797.1 discloses a kind of forest samara seed screening separation device, which usually uses fan to blow out some impurities mixed in seed with lighter weight in advance, to meet the demand of a large number of seed screening, but the screening equipment can cause seed with smaller particle size and lighter weight and lighter impurities to be blown off at the same time in discharge pipe opening, which is difficult to meet the demand of multi-stage screening. SUMMARY

[0003] The utility model provides a kind of schizonepeta seed screening separation equipment to the technical problem that the multi-stage screening effect of prior separation equipment is not good.

[0004] The technical scheme that the utility model solves above-mentioned technical problem is as follows:

[0005] A kind of schizonepeta seed screening separation equipment, including screening box, the air blowing component of installation in the side wall of the screening box and the dust collection component of installation in the top of the screening box, the top of the screening box is equipped with feed inlet and dust suction port, a first screening plate and multiple second screening plates that are all located in the lower side of the first screening plate and are arranged in upper and lower interval are installed in the screening box, the first screening plate and each second screening plate are all inclined to be arranged, and the inclination direction of the first screening plate and the second screening plate adjacent to it and the second screening plate adjacent to it is opposite, the first screening plate and each second screening plate are all equipped with sieve hole, and the aperture of each sieve hole is sequentially reduced according to the order of the first screening plate and each second screening plate from top to bottom, the side wall of the screening box is also fixed with multiple discharge pipes, each discharge pipe is connected with the lower end of the first screening plate and the lower end of each second screening plate respectively, the air outlet end of the air blowing component is towards the upper side of the first screening plate, the feed inlet is located directly above the first screening plate, and the inlet end of the dust collection component is connected with the dust suction port.

[0006] The utility model discloses beneficial effect is: screening, schizonepeta seed is from the feed port added to the screening box, schizonepeta seed falls down the screening side above one -level screening plate through the feed port, simultaneously, start blowing assembly and dust suction component, and the schizonepeta seed falling down in front of blowing assembly is blown, and the lighter impurity in schizonepeta seed is quickly blown away and is blown to one -level screening plate, and the lighter impurity is sucked out by the dust suction component of operation, and the impurity separation is completed, and the schizonepeta seed falling down in one -level screening plate is screened, and the seed of larger particle size is guided to the discharge pipe of one -level screening plate lower end intercommunication, and the seed of smaller particle size falls down towards two -level screening plate through the sieve hole of one -level screening plate, and this cycle is repeated, and the schizonepeta seed is screened gradually by the two -level screening plate in turn, and the impurity in schizonepeta seed is separated, and then the technical problem that the multistage screening effect of the existing separation equipment is not good is improved.

[0007] On the basis of the above technical scheme, the utility model further can make the following improvement.

[0008] Further, the upper end of the first screening plate is higher than the height at which the blowing assembly is located.

[0009] The beneficial effect of the above further scheme is that while the lighter impurities in the schizonepeta seeds are quickly blown towards the first screening plate by the blowing assembly, the lighter seeds in the schizonepeta seeds are simultaneously blown towards the first screening plate. At this time, because the upper end of the first screening plate is higher than the height of the blowing assembly, the upper end of the first screening plate blocks the seeds, reducing the possibility of the seeds being sucked out by the dust suction component, reducing the seed loss rate, and improving the separation effect.

[0010] Further, the upper end of the first screening plate and the dust suction port are respectively located in two parallel and spaced vertical planes.

[0011] The beneficial effect of the above further scheme is that the dust suction port forms a winnowing path through which impurities pass compared to the first screening plate. While the upper end of the first screening plate blocks the seeds, the seeds passing through the upper end of the first screening plate can be separated from the impurities at the winnowing path by using the gravitational force of the seeds themselves and the blocking effect of the inner wall at the top end of the screening box, further reducing the possibility of the seeds being sucked out by the dust suction component.

[0012] Further, a falling space for material falling is formed between the upper end of the first screening plate and the inner wall of the screening box, the dust suction port is located directly above the falling space, and the uppermost two-level screening plate is located directly below the falling space.

[0013] The beneficial effects of adopting the above-mentioned further solution are: when the seeds are separated from impurities at the air separation path, the seeds can fall from the falling space onto the uppermost secondary screening plate for subsequent screening operations, thereby improving the seed screening rate and reducing the possibility of the seeds being directly sucked out by the dust collection component.

[0014] Furthermore, the blower assembly includes a blower and an air inlet end connected to the air outlet end of the blower, the air outlet end of the air inlet end extending into the screening box and opening horizontally toward the primary screening plate.

[0015] The beneficial effects of adopting the above-mentioned further solution are as follows: During screening, the blower is turned on, and the air is introduced into the screening box through the air duct and directed toward the primary screening plate. The air blows on the catnip seeds falling in front of the air duct, and the lighter impurities in the catnip seeds are quickly blown away and blown toward the primary screening plate.

[0016] Furthermore, the blowing assembly also includes a blowing pipe closed at both ends, the blowing pipe is horizontally arranged and its middle sidewall is connected to the air outlet of the air guide pipe, and the sidewall of the blowing pipe is provided with a plurality of blowing ports that are horizontally opened towards the primary screening plate; and the feed port extends along the length direction of the blowing pipe.

[0017] The beneficial effects of adopting the above-mentioned further solution are as follows: During screening, the blower is started, and the air is introduced into the blower pipe through the air guide pipe and blown horizontally towards the primary screening plate through each blower port of the blower pipe. During this process, the air blown horizontally from each blower port at the same time forms an air curtain to ensure that the material falling from the feed port is blown apart, so that the impurities in the material are fully blown away from the seeds.

[0018] Furthermore, the vacuuming assembly includes a vacuum pipe with its inlet end connected to the vacuum port, a vacuum cleaner with its inlet end connected to the outlet end of the vacuum pipe, a dust guide pipe with its inlet end connected to the outlet end of the vacuum cleaner, and a vacuum box connected to the outlet end of the dust guide pipe.

[0019] The beneficial effect of adopting the above-mentioned further solution is that when the impurities separated from the material are sucked out by the dust collection component, the vacuum cleaner is started, and the impurities are sucked into the dust collection box through the dust collection port, the dust collection pipe, the vacuum cleaner and the dust guide pipe in sequence. The impurities are stored in the dust collection box for centralized processing.

[0020] Furthermore, the dust collection assembly also includes a check valve disposed on the dust guide tube.

[0021] The beneficial effects of adopting the above-mentioned further solution are: the dust collection box is used to store the dust collection liquid, and the outlet end of the dust guide pipe extends below the liquid surface, so as to absorb the impurities and dust in the seed screening process by adding the dust collection liquid into the dust collection box, reduce the dust in the screening box, and prevent the liquid in the dust collection box from flowing back and affecting the vacuum cleaner through the check valve.

[0022] Furthermore, it also includes a feeding hopper, which includes a vertically arranged vertical pipe and an inclined pipe whose upper end is connected to the lower end of the vertical pipe. The inclined pipe is inclined and its lower end is connected to the feeding port.

[0023] The beneficial effects of adopting the above-mentioned further solution are: during screening, the seeds of Nepeta cataria are added into the vertical tube and guided into the screening box by the inclined tube. The inclined tube can reduce the falling speed of the seeds and reduce the possibility of seed accumulation, which would prevent the blowing component from fully blowing away the impurities in the seeds.

[0024] Furthermore, the width of the inclined tube gradually increases from the top to the bottom, and the width of the feed inlet is equal to the width of the bottom of the inclined tube. Multiple guide plates are fixedly connected to the inner wall of the inclined tube. Each guide plate is inclined, with its upper end extending toward the middle of the width direction of the inclined tube and its lower end extending toward both ends of the width direction of the inclined tube.

[0025] The beneficial effects of adopting the above-mentioned further solution are: the width of the inclined tube gradually increases from the top to the bottom, which relatively increases the area formed by the seeds falling in front of the blowing assembly. When the seeds fall from the inclined tube, each guide plate can guide the seeds to both ends of the width direction of the inclined tube, so that the seeds are evenly distributed and fall in front of the blowing assembly, thereby ensuring that the blowing assembly fully blows away the impurities mixed in the seeds. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the catnip seed screening and separation device of this utility model;

[0027] Figure 2 This is a partial cross-sectional view of the blowing component of the catnip seed screening and separation device of this utility model;

[0028] Figure 3 This is a cross-sectional view of the feed hopper of the catnip seed screening and separation device of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Screening box; 11. Feed inlet; 12. Dust suction port; 13. Discharge pipe; 131. Vertical gate; 14. Mounting port; 15. Inclined chute; 16. Spring;

[0031] 2. Feed hopper; 21. Vertical pipe; 22. Inclined pipe; 221. Guide plate; 23. Horizontal gate;

[0032] 3. Primary screening board;

[0033] 4. Secondary screening board;

[0034] 5. Hair dryer assembly; 51. Hair dryer; 52. Air duct; 53. Air duct; 531. Air outlet;

[0035] 6. Vacuuming assembly; 61. Vacuum hose; 62. Vacuum cleaner; 63. Dust guide hose; 64. Vacuum box; 65. Check valve. Detailed Implementation

[0036] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] Example 1

[0038] like Figure 1 A seed screening and separation device for catnip includes a screening box 1, a blowing assembly 5 installed on the side wall of the screening box 1, and a dust suction assembly 6 installed on the top of the screening box 1. The top of the screening box 1 has a feed inlet 11 and a dust suction inlet 12. The screening box 1 is equipped with a primary screening plate 3 and multiple secondary screening plates 4, all located below the primary screening plate 3 and arranged vertically at intervals. The primary screening plate 3 and each secondary screening plate 4 are inclined, and the inclination of the primary screening plate 3, the adjacent secondary screening plate 4, and two adjacent secondary screening plates 4 are also inclined. In opposite directions, both the primary screening plate 3 and each secondary screening plate 4 have sieve holes, and the diameter of each sieve hole decreases sequentially according to the order of the primary screening plate 3 and each secondary screening plate 4 arranged from top to bottom. The side wall of the screening box 1 is also fixed with multiple discharge pipes 13, each discharge pipe 13 is connected to the lower end of the primary screening plate 3 and the lower end of each secondary screening plate 4 respectively. The air outlet of the blowing assembly 5 faces the upper side of the primary screening plate 3, the feed inlet 11 is located directly above the primary screening plate 3, and the inlet of the dust collection assembly 6 is connected to the dust collection port 12.

[0039] The beneficial effects of this embodiment are as follows: During screening, the catnip seeds are added into the screening box 1 through the feed inlet 11. The catnip seeds fall downwards through the feed inlet 11 onto the screening side above the primary screening plate 3. At the same time, the blowing assembly 5 and the dust suction assembly 6 are activated to blow air onto the catnip seeds falling in front of the blowing assembly 5. The lighter impurities in the catnip seeds are quickly blown away and blown toward the primary screening plate 3. The operating dust suction assembly 6 sucks out the lighter impurities, completing the impurity separation. The heavier catnip seeds fall onto the primary screening plate 3 and are screened. The larger seeds are guided through the primary screening plate 3 to the discharge pipe 13 connected to the lower end of the primary screening plate 3, while the smaller seeds fall through the sieve holes of the primary screening plate 3 toward the secondary screening plate 4. This cycle continues until the seeds are screened sequentially by multiple secondary screening plates 4, completing the step-by-step separation of the catnip seeds and separating the impurities in the catnip seeds. This improves the technical problem of poor multi-stage screening effect in existing separation equipment.

[0040] The vertical plane formed by the lower opening of the feed inlet 11 is located in front of the blowing assembly 5 to ensure that the blowing assembly 5 blows the seeds falling from the feed inlet 11.

[0041] The tilt angles of the primary screening plate 3 and each secondary screening plate 4 can be 30°, 45°, 50°, and 60°, etc.

[0042] Based on the above embodiment, the bottom wall of the screening box 1 is inclined downward and opens downward so that the material screened by the lowest secondary screening plate 4 can be discharged.

[0043] Based on the above embodiment, a vertical gate 131 is slidably connected to the side wall of each discharge pipe 13 so as to control the opening and closing of the discharge pipe 13.

[0044] In this embodiment, multiple mounting ports 14 are provided on the side wall of the screening box 1. Each mounting port 14 is connected to the lower end of the primary screening plate 3 and the lower end of each secondary screening plate 4, so that the feed end of each discharge pipe 13 can be installed at the corresponding mounting port 14.

[0045] Multiple inclined grooves 15 are also provided on the inner wall of the screening box 1. The lower end of each inclined groove 15 is connected to each installation port 14 so that the primary screening plate 3 and each secondary screening plate 4 can be installed in the corresponding inclined groove 15 through the installation port 14, thereby realizing the disassembly and assembly of the lower end of the primary screening plate 3 and each secondary screening plate 4.

[0046] Based on the above embodiment, springs 16 are fixedly connected to the lower side of the primary screening plate 3 and the lower side of each secondary screening plate 4, and the upper end of each spring 16 is fixedly connected to the primary screening plate 3 and each secondary screening plate 4, and the lower end of each spring 16 abuts against the bottom of the inclined groove 15.

[0047] When the material falls onto the primary screening plate 3 or each of the secondary screening plates 4, the impact force of the falling seeds causes the corresponding primary screening plate 3 or each of the secondary screening plates 4 to vibrate slightly. This vibration reduces the possibility of seeds accumulating on the plate surface and improves the filtration and screening effect.

[0048] Example 2

[0049] like Figure 1 Based on Example 1, the upper end of the primary screening plate 3 is higher than the height of the blowing assembly 5.

[0050] The beneficial effect of the preferred solution in the above embodiments is that, while the lighter impurities in the catnip seeds are quickly blown towards the primary screening plate 3 by the blowing component 5, the lighter seeds in the catnip seeds are simultaneously blown towards the primary screening plate 3. At this time, since the upper end of the primary screening plate 3 is higher than the height of the blowing component 5, the upper end of the primary screening plate 3 blocks the seeds, thereby reducing the possibility of the seeds being sucked out by the dust suction component 6, reducing the seed loss rate, and improving the separation effect.

[0051] Example 3

[0052] like Figure 1 Based on Examples 1 and 2, the upper end of the primary screening plate 3 and the dust suction port 12 are respectively located in two parallel and spaced vertical planes.

[0053] The beneficial effect of adopting the preferred solution in the above embodiments is that the dust suction port 12 forms an air separation path for impurities to pass through between it and the primary screening plate 3. While blocking the seeds at the upper end of the primary screening plate 3, the seeds can be separated from the impurities at the air separation path by the gravity of the seeds themselves and the blocking effect of the inner wall at the top of the screening box 1, thereby further reducing the possibility of the seeds being sucked out by the dust suction component 6.

[0054] As a specific embodiment of the above, the feed inlet 11 is located at the left end of the top of the screening box 1, and the dust suction port 12 is located at the right end of the top of the screening box 1.

[0055] Example 4

[0056] like Figure 1 Based on Examples 1-3, a falling space for material to fall is formed between the upper end of the primary screening plate 3 and the inner wall of the screening box 1. The dust suction port 12 is located directly above the falling space, and the uppermost secondary screening plate 4 is located directly below the falling space.

[0057] The beneficial effect of adopting the preferred solution in the above embodiments is that when the seeds are separated from impurities at the air separation path, the seeds can fall from the falling space onto the uppermost secondary screening plate 4 for subsequent screening operations, thereby improving the seed screening rate and reducing the possibility of the seeds being directly sucked out by the dust collection component 6.

[0058] Example 5

[0059] like Figure 1 and Figure 2 Based on embodiments 1-4, the blower assembly 5 includes a blower 51 and an air inlet end connected to the air outlet end of the blower 51. The air outlet end of the air inlet end of the air inlet end extends into the screening box 1 and opens horizontally toward the primary screening plate 3.

[0060] The beneficial effect of adopting the preferred solution in the above embodiments is that, during screening, the blower 51 is started, and the air is introduced into the screening box 1 from the air guide pipe 52 and directed toward the primary screening plate 3, blowing the catnip seeds falling in front of the air guide pipe 52. The lighter impurities in the catnip seeds are quickly blown away and blown toward the primary screening plate 3.

[0061] In actual use, the airflow can be controlled by adjusting the speed setting of the hair dryer 51.

[0062] Based on the above embodiment, the blower 51 is a warm air blower, which dries the seeds by blowing warm air towards them. At the same time, it further reduces the weight of impurities in the seeds, so as to quickly separate the seeds from the lighter impurities.

[0063] Example 6

[0064] like Figure 1 and Figure 2 Based on embodiments 1-5, the blowing assembly 5 also includes a blowing pipe 53 closed at both ends. The blowing pipe 53 is horizontally arranged and its middle side wall is connected to the air outlet of the air guide pipe 52. The side wall of the blowing pipe 53 is provided with a plurality of blowing ports 531 that are horizontally opened towards the primary screening plate 3. The feed inlet 11 extends along the length of the blowing pipe 53.

[0065] The beneficial effect of adopting the preferred solution in the above embodiments is that, during screening, the blower 51 is started, and the air is introduced into the blower pipe 53 through the air guide pipe 52, and blown horizontally towards the primary screening plate 3 through each blower port 531 of the blower pipe 53. During this process, the air blown horizontally from each blower port 531 at the same time forms an air curtain to ensure that the material falling from the feed port 11 is blown apart, so that the impurities in the material are fully blown away from the seeds.

[0066] Based on the above embodiment, the blower 53 is a square tube, and one side in the horizontal direction is connected to the air outlet of the air guide 52, while the other side has an opening to form multiple blowers 531.

[0067] Furthermore, the air blowing pipe 53 is fixedly connected to the inner wall of the screening box 1 by multiple brackets (not shown in the figure).

[0068] Example 7

[0069] like Figure 1 Based on embodiments 1-6, the dust collection assembly 6 includes a dust collection pipe 61 with its inlet end connected to the dust collection port 12, a vacuum cleaner 62 with its inlet end connected to the outlet end of the dust collection pipe 61, a dust guide pipe 63 with its inlet end connected to the outlet end of the vacuum cleaner 62, and a dust collection box 64 connected to the outlet end of the dust guide pipe 63.

[0070] The beneficial effect of adopting the preferred solution in the above embodiments is that when the impurities separated from the material are sucked out by the dust suction component 6, the vacuum cleaner 62 is started. The impurities are sucked into the dust collection box 64 through the dust suction port 12, the dust suction pipe 61, the vacuum cleaner 62 and the dust guide pipe 63 in sequence. The impurities are stored in the dust collection box 64 for centralized processing.

[0071] Based on the above embodiment, the dust collection box 64 is connected to a dust discharge pipe so as to discharge the substances stored inside.

[0072] Example 8

[0073] like Figure 1 Based on embodiments 1-7, the dust collection assembly 6 also includes a check valve 65 disposed in the dust guide pipe 63.

[0074] The beneficial effect of the preferred solution in the above embodiments is that the dust collection box 64 is used to store the dust collection liquid, and the outlet end of the dust guide pipe 63 extends below the liquid surface, so that the dust collection liquid added to the dust collection box 64 can absorb the impurities and dust in the seed screening process, reduce the dust in the screening box 1, and prevent the backflow of the liquid in the dust collection box 64 from affecting the vacuum cleaner 62 through the check valve 65.

[0075] The vacuuming liquid can be water.

[0076] Example 9

[0077] like Figure 1 and Figure 3 Based on embodiments 1-8, it also includes a feeding hopper 2. The feeding hopper 2 includes a vertically arranged vertical pipe 21 and an inclined pipe 22 whose upper end is connected to the lower end of the vertical pipe 21. The inclined pipe 22 is inclined and its lower end is connected to the feeding port 11.

[0078] The beneficial effect of the preferred solution in the above embodiments is that, during screening, the seeds of Nepeta cataria are added into the vertical tube 21 and guided into the screening box 1 by the inclined tube 22. The inclined tube 22 can reduce the falling speed of the seeds and reduce the possibility that the seeds will accumulate and the blowing component 5 will not be able to blow away the impurities in the seeds.

[0079] Example 10

[0080] like Figure 1 and Figure 3 Based on embodiments 1-9, the width of the inclined tube 22 gradually increases from the top to the bottom, and the width of the feed inlet 11 is equal to the width of the bottom of the inclined tube 22. Multiple guide plates 221 are fixedly connected to the inner wall of the inclined tube 22. Each guide plate 221 is inclined and its upper end extends toward the middle of the width direction of the inclined tube 22, and its lower end extends toward both ends of the width direction of the inclined tube 22.

[0081] The beneficial effect of the preferred solution in the above embodiments is that the width of the inclined tube 22 gradually increases from the top to the bottom, which relatively increases the area formed by the seeds falling in front of the blowing assembly 5. When the seeds fall from the inclined tube 22, each guide plate 221 can guide the seeds to both ends of the width direction of the inclined tube 22, so that the seeds are evenly distributed and fall in front of the blowing assembly 5, thereby ensuring that the blowing assembly 5 fully blows away the impurities mixed in the seeds.

[0082] Based on the above embodiment, a transverse gate 23 is slidably connected to the side wall of the inclined tube 22 so as to control the opening and closing of the inclined tube 22 and the discharge speed through the transverse gate 23, so as to ensure that the seeds fall into the screening box 1 at a speed that is not too fast and that there is no accumulation on the primary screening plate 3 and the secondary screening plate 4.

[0083] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0086] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for screening and separating Nepeta cataria seeds, characterized in that, The system includes a screening box (1), a blowing assembly (5) installed on the side wall of the screening box (1), and a dust collection assembly (6) installed on the top of the screening box (1). The top of the screening box (1) has a feed inlet (11) and a dust collection inlet (12). The screening box (1) contains a primary screening plate (3) and multiple secondary screening plates (4) arranged vertically and vertically below the primary screening plate (3). The primary screening plate (3) and each of the secondary screening plates (4) are inclined, and the inclination directions of the primary screening plate (3) and the adjacent secondary screening plate (4) and two adjacent secondary screening plates (4) are opposite. The screening plate (3) and each of the secondary screening plates (4) are provided with sieve holes, and the diameter of each sieve hole decreases sequentially according to the order of the primary screening plate (3) and each of the secondary screening plates (4) arranged from top to bottom. The side wall of the screening box (1) is also fixed with multiple discharge pipes (13), each of the discharge pipes (13) is connected to the lower end of the primary screening plate (3) and the lower end of each of the secondary screening plates (4). The air outlet of the blowing assembly (5) faces the upper side of the primary screening plate (3), the feed inlet (11) is located directly above the primary screening plate (3), and the inlet of the dust collection assembly (6) is connected to the dust collection port (12).

2. The catnip seed screening and separation device according to claim 1, characterized in that, The upper end of the primary screening plate (3) is higher than the height of the blowing assembly (5).

3. The catnip seed screening and separation device according to claim 1, characterized in that, The upper end of the primary screening plate (3) and the dust suction port (12) are respectively located in two parallel and spaced vertical planes.

4. The catnip seed screening and separation device according to claim 3, characterized in that, The upper end of the primary screening plate (3) and the inner wall of the screening box (1) form a falling space for materials to fall. The dust suction port (12) is located directly above the falling space, and the uppermost secondary screening plate (4) is located directly below the falling space.

5. The catnip seed screening and separation device according to claim 1, characterized in that, The blower assembly (5) includes a blower (51) and an air duct (52) whose air inlet end is connected to the air outlet end of the blower (51). The air outlet end of the air duct (52) extends into the screening box (1) and opens horizontally toward the primary screening plate (3).

6. The catnip seed screening and separation device according to claim 5, characterized in that, The blowing assembly (5) also includes a blowing pipe (53) closed at both ends. The blowing pipe (53) is horizontally arranged and its middle sidewall is connected to the air outlet of the air guide pipe (52). The sidewall of the blowing pipe (53) is provided with a plurality of blowing ports (531) that are horizontally open towards the primary screening plate (3). The feed inlet (11) extends along the length of the blowing pipe (53).

7. The catnip seed screening and separation device according to claim 1, characterized in that, The vacuum assembly (6) includes a vacuum pipe (61) with its inlet end connected to the vacuum port (12), a vacuum cleaner (62) with its inlet end connected to the outlet end of the vacuum pipe (61), a dust guide pipe (63) with its inlet end connected to the outlet end of the vacuum cleaner (62), and a vacuum box (64) connected to the outlet end of the dust guide pipe (63).

8. The catnip seed screening and separation device according to claim 7, characterized in that, The dust collection assembly (6) also includes a check valve (65) disposed on the dust guide tube (63).

9. The catnip seed screening and separation device according to any one of claims 1-8, characterized in that, It also includes a feed hopper (2), which includes a vertically arranged vertical pipe (21) and an inclined pipe (22) whose upper end is connected to the lower end of the vertical pipe (21). The inclined pipe (22) is inclined and its lower end is connected to the feed inlet (11).

10. The catnip seed screening and separation device according to claim 9, characterized in that, The width of the inclined tube (22) gradually increases from the top to the bottom, and the width of the feed inlet (11) is equal to the width of the bottom of the inclined tube (22). Multiple guide plates (221) are fixedly connected to the inner wall of the inclined tube (22). Each guide plate (221) is inclined, and its upper end extends toward the middle of the width direction of the inclined tube (22), and its lower end extends toward both ends of the width direction of the inclined tube (22).

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