Multi-stage screening device for winnowing vegetable seeds

Abstract

The utility model discloses a multistage screening device for winnowing vegetable seeds, and belongs to the technical field of seed screening. A vegetable seed winnowing multistage screening device comprises a winnowing box body, an air inlet box is arranged at one end of the winnowing box body, an air exhaust box is arranged at the other end of the winnowing box body, an inclined support is arranged below the winnowing box body, and the inclined support is connected with the winnowing box body through bolts. In order to solve the problems that a winnowing device can only conduct single-time winnowing and screening operation on seeds, but the diameters of the seeds have a large change interval, and large gaps possibly exist among the seeds screened at a time, the screened seeds roll into an exhaust box under the influence of gravity, the seeds with the large particle size are output from a first-stage screening hopper, and the seeds with the large particle size are output from a second-stage screening hopper. And the seeds with relatively small particle sizes are output from the third-stage sieve hopper, and the seeds with medium particle sizes are output from the second-stage sieve hopper, so that the seeds can be divided into three categories, and the particle sizes of the seeds of the same category are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seed screening, in particular to a vegetable seed wind selection multi-stage screening device. Background Art

[0002] Before sowing vegetable seeds, the seeds need to be screened to select seeds of good quality;

[0003] A Chinese patent with publication number CN217700061U discloses a vegetable seed screening device for vegetable planting. By setting a transmission component, the vegetable seed screening bucket can be driven to swing back and forth when the fan blades are driven to rotate, thereby shaking the vegetable seed screening bucket instead of manual shaking, saving time and effort and improving screening efficiency.

[0004] In the above patent, the air selection device can only perform a single air selection and screening operation on the seeds. However, the diameter of the seeds themselves has a large variation range, and there may still be a large gap between the seeds screened out in a single time. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage screening device for vegetable seeds. The screened seeds roll into an exhaust box under the influence of gravity, and seeds with relatively large particle sizes are output from the first-stage screen bucket, seeds with relatively small particle sizes are output from the third-stage screen bucket, and medium-sized particles are output through the second-stage screen bucket. In this way, the seeds can be divided into three categories, and the particle size between seeds of the same category can be reduced, which can solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage screening device for air selection of vegetable seeds, comprising an air selection box, an air inlet box is arranged at one end of the air selection box, an air exhaust box is arranged at the other end of the air selection box, an inclined bracket is arranged below the air selection box, the inclined bracket is connected to the air selection box by bolts, a feeding pipe port is arranged at the top of the air inlet box, air inlets are arranged at both ends of the feeding pipe port, an air outlet is arranged at the top of the exhaust box, a first-stage sieve bucket is arranged at one end of the exhaust box, a second-stage sieve bucket is arranged at the other end of the exhaust box, and a third-stage sieve bucket is arranged on the outside of the exhaust box.

[0007] Preferably, the first-stage sieve bucket, the third-stage sieve bucket and the second-stage sieve bucket all extend to the interior of the exhaust box, and the air outlet extends to the interior of the first-stage sieve bucket.

[0008] Preferably, a partition baffle is provided inside the air inlet box, the partition baffle is located below the air inlet, and a bottom plate is provided at the bottom of the air selection box.

[0009] Preferably, two sieve plate assemblies are provided inside the air separation box, and a plurality of inspection windows are provided on the outer surface of the air separation box. The upper sieve plate assembly is consistent in height with the first-stage sieve bucket, and the lower sieve plate assembly is consistent in height with the second-stage sieve bucket.

[0010] Preferably, the sieve plate assembly comprises a sieve plate, an adapter frame and a grille plate, the adapter frame is connected to the air separation box through a frame, and a plurality of partition bars are provided on the outer surface of the sieve plate, and the partition bars are connected to the sieve plate through slots.

[0011] Preferably, side plates are provided on both sides of the sieve plate, and the side plates are connected to the sieve plate by bolts. A wind frame is provided at one end of the adapter frame, and the wind frame is located inside the air inlet box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, seeds are put into the air box through the feeding pipe, and the air drives the seeds into the interior of the air selection box. The seeds are screened by the sieve plate assembly inside the air selection box. The screened seeds roll into the exhaust box under the influence of gravity. The seeds with relatively large particle sizes are output from the first-level sieve bucket, the seeds with relatively small particle sizes are output from the third-level sieve bucket, and the medium-sized particles are output through the second-level sieve bucket. In this way, the seeds can be divided into three categories, and the particle sizes of seeds of the same category can be reduced.

[0014] 2. In the utility model, the two sieve plate assemblies can divide the internal space of the air separation box into three areas. After entering the air separation box, the seeds will first contact the upper sieve plate assembly, and the fallen seeds will contact the lower sieve plate assembly. The sieve plate aperture on the surface of the sieve plate assembly can be replaced according to the screening requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall front view of the utility model;

[0016] Figure 2 It is an overall side view of the utility model;

[0017] Figure 3 This is a schematic diagram of the screen bucket structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the screen plate assembly of the utility model.

[0019] In the figure: 1. air separation box; 2. air inlet box; 3. exhaust box; 4. inclined bracket; 101. inspection window; 102. sieve plate assembly; 103. bottom plate; 1021. sieve plate; 1022. wind frame; 1023. partition bar; 1024. side plate; 1025. adapter frame; 1026. grille plate; 201. feeding pipe port; 202. air inlet; 203. partition baffle; 301. air outlet; 302. first-stage sieve bucket; 303. third-stage sieve bucket; 304. second-stage sieve bucket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to solve the problem that the wind selection device can only perform a single wind selection and screening operation on the seeds, but the diameter of the seeds themselves has a large variation range, and there may still be a large gap between the seeds screened in a single time; please refer to Figure 1-4 , the utility model provides the following solutions:

[0022] A multi-stage screening device for air selection of vegetable seeds comprises an air selection box 1, an air inlet box 2 is arranged at one end of the air selection box 1, an air exhaust box 3 is arranged at the other end of the air selection box 1, an inclined bracket 4 is arranged below the air selection box 1, the inclined bracket 4 is connected to the air selection box 1 by bolts, a feeding pipe port 201 is arranged on the top of the air inlet box 2, seeds are fed into the air selection box 1 from the feeding pipe port 201, air inlets 202 are arranged at both ends of the feeding pipe port 201, the air inlets 202 need to be connected to a fan device, and the fan blows air to the air selection box through a pipeline 1, an air outlet 301 is arranged on the top of the exhaust box 3, a first-level sieve bucket 302 is arranged at one end of the exhaust box 3, a second-level sieve bucket 304 is arranged at the other end of the exhaust box 3, a third-level sieve bucket 303 is arranged on the outside of the exhaust box 3, the first-level sieve bucket 302, the third-level sieve bucket 303 and the second-level sieve bucket 304 all extend to the inside of the exhaust box 3, the air outlet 301 extends to the inside of the first-level sieve bucket 302, a partition baffle 203 is arranged inside the air inlet box 2, and the partition baffle 203 is located below the air inlet 202, and a bottom plate 103 is arranged at the bottom of the air selection box body 1;

[0023] In this embodiment, the external fan is started, and the seeds are simultaneously fed into the air box 2 through the feeding pipe port 201, and the air drives the seeds into the interior of the air selection box 1, and the seeds are screened by the sieve plate assembly 102 inside the air selection box 1, and the screened seeds roll into the exhaust box 3 under the influence of gravity, and the seeds with relatively large particle sizes are output from the first-level sieve bucket 302, and the seeds with relatively small particle sizes are output from the third-level sieve bucket 303, and the medium-sized particles are output through the second-level sieve bucket 304, so that the seeds can be divided into three categories, and the particle sizes of seeds of the same category can be reduced;

[0024] Two sieve plate assemblies 102 are arranged inside the air separation box 1, and a plurality of inspection windows 101 are arranged on the outer surface of the air separation box 1. The upper sieve plate assembly 102 is in the same height as the first-stage sieve bucket 302, and the lower sieve plate assembly 102 is in the same height as the second-stage sieve bucket 304. The sieve plate assembly 102 includes a sieve plate 1021, an adapter frame 1025 and a grille plate 1026. The adapter frame 1025 is connected to the air separation box 1 through a frame. A plurality of partition bars 1023 are arranged on the outer surface of the sieve plate 1021, and the partition bars 1023 are connected to the sieve plate 1021 through a card slot. Side plates 1024 are arranged on both sides of the sieve plate 1021, and the side plates 1024 are connected to the sieve plate 1021 through bolts. A wind frame 1022 is arranged at one end of the adapter frame 1025, and the wind frame 1022 is located inside the air inlet box 2;

[0025] In this embodiment, the two sieve plate assemblies 102 can divide the internal space of the air separation box 1 into three areas. After entering the air separation box 1, the seeds will first contact the upper sieve plate assembly 102, and the fallen seeds will contact the lower sieve plate assembly 102. The aperture of the sieve plate 1021 on the surface of the sieve plate assembly 102 can be replaced according to the screening requirements.

[0026] Working principle: start the external fan and at the same time, throw the seeds into the air box 2 through the feeding pipe port 201. The air drives the seeds into the interior of the air separation box 1, and the seeds are screened by the sieve plate assembly 102 inside the air separation box 1. The two sieve plate assemblies 102 can divide the internal space of the air separation box 1 into three areas. After entering the air separation box 1, the seeds will first contact the upper sieve plate assembly 102, and the fallen seeds will contact the lower sieve plate assembly 102. The aperture of the sieve plate 1021 on the surface of the sieve plate assembly 102 can be replaced according to the screening requirements. The screened seeds roll into the exhaust box 3 under the influence of gravity. Seeds with relatively large particle sizes are output from the first-level sieve bucket 302, seeds with relatively small particle sizes are output from the third-level sieve bucket 303, and medium particle sizes are output through the second-level sieve bucket 304. In this way, the seeds can be divided into three categories and the particle size between seeds of the same category can be reduced.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vegetable seed air selection multi-stage screening device, comprising an air selection box (1), characterized in that: An air inlet box (2) is provided at one end of the air separation box (1), and an air exhaust box (3) is provided at the other end of the air separation box (1). An inclined bracket (4) is provided below the air separation box (1), and the inclined bracket (4) is connected to the air separation box (1) by bolts. A feeding pipe opening (201) is provided at the top of the air inlet box (2), and air inlets (202) are provided at both ends of the feeding pipe opening (201). An air outlet (301) is provided at the top of the exhaust box (3). A first-stage sieve bucket (302) is provided at one end of the exhaust box (3), and a second-stage sieve bucket (304) is provided at the other end of the exhaust box (3). A third-stage sieve bucket (303) is provided on the outer side of the exhaust box (3).

2. The vegetable seed air selection multi-stage screening device according to claim 1, characterized in that: The first-stage sieve bucket (302), the third-stage sieve bucket (303) and the second-stage sieve bucket (304) all extend to the interior of the exhaust box (3), and the air outlet (301) extends to the interior of the first-stage sieve bucket (302).

3. The vegetable seed air selection multi-stage screening device according to claim 1, characterized in that: A partition baffle (203) is provided inside the air inlet box (2), and the partition baffle (203) is located below the air inlet (202). A bottom plate (103) is provided at the bottom of the air separation box body (1).

4. The vegetable seed air selection multi-stage screening device according to claim 1, characterized in that: Two sieve plate assemblies (102) are arranged inside the air separation box (1), and a plurality of inspection windows (101) are arranged on the outer surface of the air separation box (1). The upper sieve plate assembly (102) is in the same height as the first-stage sieve bucket (302), and the lower sieve plate assembly (102) is in the same height as the second-stage sieve bucket (304).

5. The vegetable seed air selection multi-stage screening device according to claim 4, characterized in that: The sieve plate assembly (102) comprises a sieve plate (1021), an adapter frame (1025) and a grille plate (1026); the adapter frame (1025) is connected to the air separation box (1) via a frame; a plurality of spacers (1023) are provided on the outer surface of the sieve plate (1021); the spacers (1023) are connected to the sieve plate (1021) via a slot.

6. The vegetable seed air selection multi-stage screening device according to claim 5, characterized in that: Side plates (1024) are provided on both sides of the sieve plate (1021), and the side plates (1024) are connected to the sieve plate (1021) by bolts. A wind frame (1022) is provided at one end of the adapter frame (1025), and the wind frame (1022) is located inside the air inlet box (2).

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