Adjustable aperture nut de-awner

Abstract

The utility model discloses nut impurity removal screen of adjustable aperture, include: U shape support board, its bottom inner wall is set to inclined plane and is set to the left lower side inclination, first screen board, it is set to the left lower side inclination and movable contact between U shape support board front and back side inner wall, the top movable contact of first screen board has second screen board, and all be provided with a plurality of screen holes on second screen board and first screen board, and the screen hole of upper and lower opposition is vertical intercommunication, L shape guide rod, it is three groups and equidistance fixed connection in the bottom right side of second screen board. The utility model discloses through setting a series of structures, facilitate to the nut vibration screening and remove the small particle impurity and automatic shunting of nut, need not manual follow -up alone to remove small particle impurity and nut, has saved manual operation step, has improved use convenience, and it is convenient according to the specification of different kinds of nut flexible adjustment screening filter impurity aperture, in order to adapt to a variety of specifications nut's screening and remove the demand of impurity, improve applicability.

Description

Technical Field

[0001] This utility model relates to the field of nut impurity removal sieve technology, specifically a nut impurity removal sieve with adjustable aperture. Background Technology

[0002] Nuts, a type of indeterminate fruit, have a hard shell and contain one or more seeds. Common examples include chestnuts and almonds. These fruits are the essence of plants, usually rich in nutrients, including protein, oil, minerals, and vitamins. They have excellent effects on human growth and development, strengthening the body, and preventing diseases. In the nut processing process, in order to ensure product quality, impurities need to be removed. Therefore, vibrating screens are often used to separate small particles of impurities mixed in with the nuts.

[0003] Existing vibrating screens for removing impurities from nuts have the following shortcomings in practical use: 1. The aperture of the screen plate is fixed, and it is impossible to flexibly adjust the aperture size for screening and removing impurities according to the specifications of different types of nuts, making it difficult to meet the screening and removal needs of nuts of various specifications and resulting in poor applicability; 2. The impurities and nuts after screening cannot be automatically separated and discharged, requiring manual removal of small particles of impurities and nuts, which increases the manual operation steps and makes it inconvenient to use; In view of this, this application proposes a nut impurity removal screen with adjustable aperture to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a nut impurity removal sieve with adjustable aperture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable aperture nut impurity removal sieve, comprising:

[0006] The U-shaped support plate has an inclined surface at its bottom inner wall, which is tilted downward to the left.

[0007] The first sieve plate is inclined to the lower right and is in contact with the inner walls of the front and rear sides of the U-shaped support plate. The top of the first sieve plate is in contact with the second sieve plate. Both the second sieve plate and the first sieve plate are provided with multiple sieve holes, and the sieve holes that are opposite each other are vertically connected.

[0008] The L-shaped guide rods are in three sets and are fixedly connected at equal intervals to the bottom right side of the second screen plate. The first screen plate is slidably sleeved on the three L-shaped guide rods.

[0009] The vertical missile support assembly consists of four sets, which are fixedly connected to the bottom of the first screen plate in a rectangular shape. The front inner wall and the rear inner wall of the U-shaped support plate are respectively fixedly connected to two corresponding vertical missile support assemblies. The vertical missile support assembly is used to vertically guide and elastically support the first screen plate, providing conditions for it to vibrate slightly vertically.

[0010] A conical cover has a rectangular protrusion at its top, which is connected to the bottom of the first sieve plate. A vertical vibration motor is fixedly installed on the inner wall of the top of the conical cover by four bolts. The vertical vibration motor is used to generate a vertical hard vibration force when started, and drives the second sieve plate and the first sieve plate to vibrate vertically at high frequency through the conical cover. When the inclined first sieve plate and the second sieve plate vibrate, the nuts poured onto the second sieve plate are vibrated and screened to separate small particles of impurities, so that the small particles of impurities fall downward into the inclined surface of the U-shaped support plate and slide to the left for discharge.

[0011] The threaded horizontal adjustment measuring component is fixedly connected to the left side of the first sieve plate and the second sieve plate. The threaded horizontal adjustment measuring component is used to adjust the horizontal movement of the second sieve plate. The horizontal movement of the second sieve plate drives the displacement of the upper sieve hole, so that the upper sieve hole is partially offset from the lower sieve hole. The hole diameter adjustment is achieved by partially offsetting the upper and lower sieve holes.

[0012] Preferably, the top of the rectangular protrusion structure at the top of the conical cover is welded to the middle of the bottom of the first sieve plate.

[0013] Preferably, the conical cover is detachably connected to the bottom of the first sieve plate.

[0014] Preferably, the top of the rectangular protrusion structure at the top of the conical cover is in movable contact with the bottom of the first screen plate. A rectangular slot is provided at the top of the rectangular protrusion structure. A rectangular block is welded and fixed at the bottom center of the first screen plate. A threaded groove is provided on the left side of the rectangular block. A knob-type bolt is threaded into the threaded groove. A threaded through hole is provided on the left side of the rectangular protrusion structure for threaded connection with the knob-type bolt.

[0015] Preferably, the vertical missile support assembly includes a support sleeve, a T-shaped guide rod, and a rubber sleeve. The front inner wall and the rear inner wall of the U-shaped support plate are respectively fixedly connected to the two corresponding support sleeves. The T-shaped guide rod is slidably sleeved in the corresponding support sleeve. The four T-shaped guide rods are fixedly connected in a rectangular shape to the bottom of the first screen plate. The rubber sleeve is bonded and fixed between the top of the corresponding support sleeve and the bottom of the first screen plate. The rubber sleeve is movably sleeved on the corresponding T-shaped guide rod.

[0016] Preferably, the threaded horizontal adjustment measuring assembly includes a spiral plate, a stop bar, a T-shaped screw, a rectangular tube, a rectangular rod, a pointer, and a scale. The bottom right side of the spiral plate is fixedly connected to the middle left side of the first sieve plate, and the top of the spiral plate is set as an inclined surface. The stop bar is fixedly connected to the top right side of the spiral plate, and the bottom of the stop bar is in movable contact with the top left side of the second sieve plate. The top of the stop bar is set as an inclined surface.

[0017] The rectangular tube is fixedly connected between the inner walls of the two sides of the U-shaped plate. The rectangular rod is slidably sleeved inside the rectangular tube. The right end of the rectangular rod slides out to the outside of the U-shaped plate and is fixedly connected to the left side of the second sieve plate. The T-shaped screw is rotatably embedded in the left side of the U-shaped plate. The left end of the rectangular rod has a threaded hole for threaded connection with the T-shaped screw. The scale is fixedly connected between the inner walls of the two sides of the U-shaped plate. The pointer is fixedly connected to the bottom left side of the rectangular rod. The bottom end of the pointer extends to the bottom of the rectangular tube and cooperates with the front side of the scale.

[0018] Preferably, a U-shaped support is fixedly connected to the bottom of the U-shaped support plate, and a vibration-damping pad is glued and fixed to the bottom of the U-shaped support.

[0019] Preferably, the bottom of the rectangular tube has a rectangular perforation, and the pointer is located inside the rectangular perforation and does not contact the inner wall of the rectangular perforation.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. With the cooperation of the U-shaped support plate, the first sieve plate, the second sieve plate, the vertical missile support assembly, the conical cover and the vertical vibration motor, the nuts can be vibrated and screened to remove impurities and small particles of impurities and nuts can be automatically separated and discharged. There is no need for manual removal of small particles of impurities and nuts afterward, which saves manual operation steps and improves the convenience of use.

[0022] 2. By combining the first sieve plate, the second sieve plate, the threaded horizontal adjustment measuring component, and the L-shaped guide rod, the sieve filter aperture can be flexibly adjusted according to the specifications of different types of nuts, so as to meet the sieve and impurity removal needs of nuts of various specifications and improve applicability;

[0023] 3. The rectangular slots, rectangular blocks, threaded grooves, knob-type bolts, and threaded through holes are designed in another way to facilitate the disassembly and assembly of the conical cover. This makes it easier to disassemble, move, and inspect the vertical vibration motor, providing convenience for subsequent maintenance work and further improving the flexibility of use.

[0024] This utility model, through a series of structures, facilitates the vibration screening and impurity removal of nuts, and automatically separates and discharges small particles of impurities and nuts, eliminating the need for manual removal of small particles of impurities and nuts separately. This saves manual operation steps, improves ease of use, and allows for flexible adjustment of the screening and impurity removal aperture according to the specifications of different types of nuts, so as to meet the screening and impurity removal needs of nuts of various specifications and improve applicability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the adjustable aperture nut impurity removal sieve proposed in Embodiment 1 of this utility model;

[0026] Figure 2 for Figure 1A schematic diagram of the right-side view structure;

[0027] Figure 3 This is a schematic diagram of the main cross-sectional structure of the adjustable aperture nut impurity removal screen proposed in Embodiment 1 of this utility model;

[0028] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram;

[0029] Figure 5 This is a schematic diagram of the main cross-sectional structure of the adjustable aperture nut impurity removal sieve proposed in Embodiment 2 of this utility model.

[0030] In the diagram: 1. U-shaped support plate; 2. First sieve plate; 201. Second sieve plate; 202. L-shaped guide rod; 3. Conical cover; 301. Vertical vibration motor; 302. Rectangular clamp; 303. Knob bolt; 4. Support sleeve; 401. T-shaped guide rod; 402. Rubber sleeve; 5. U-shaped plate; 501. Stop bar; 502. Rectangular tube; 503. Rectangular rod; 504. T-shaped screw; 505. Pointer; 506. Ruler. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, the adjustable aperture nut impurity removal sieve proposed in this embodiment includes:

[0034] The U-shaped support plate 1 has an inclined inner wall at its bottom, which is inclined to the lower left. A U-shaped support is fixedly connected to the bottom of the U-shaped support plate 1, and a vibration isolation pad is glued and fixed to the bottom of the U-shaped support.

[0035] The first sieve plate 2 is inclined to the lower right and is in contact with the inner walls of the front and rear sides of the U-shaped support plate 1. The top of the first sieve plate 2 is in contact with the second sieve plate 201. Both the second sieve plate 201 and the first sieve plate 2 are provided with multiple sieve holes, and the sieve holes that are opposite each other are vertically connected.

[0036] The L-shaped guide rods 202 are in three sets and are fixedly connected at equal intervals to the bottom right side of the second screen plate 201. The first screen plate 2 is slidably sleeved on the three L-shaped guide rods 202. The right side of the first screen plate 2 has three transverse guide grooves that are slidably sleeved on the outer side of the corresponding L-shaped guide rods 202, which serve to guide the L-shaped guide rods 202 laterally.

[0037] The vertical missile support assembly consists of four sets, which are fixedly connected to the bottom of the first screen plate 2 in a rectangular shape. The front inner wall and the rear inner wall of the U-shaped support plate 1 are respectively fixedly connected to two corresponding vertical missile support assemblies. The vertical missile support assembly is used to vertically guide and elastically support the first screen plate 2, providing conditions for it to vibrate slightly vertically.

[0038] The conical cover 3 has a rectangular protrusion at its top and is connected to the bottom of the first sieve plate 2. A vertical vibration motor 301 is fixedly installed on the inner wall of the top of the conical cover 3 by four bolts. The vertical vibration motor 301 is used to generate a vertical hard vibration force when it is started and drive the second sieve plate 2 and the first sieve plate 201 to vibrate vertically at high frequency through the conical cover 3. When the inclined first sieve plate 2 and the second sieve plate 201 vibrate, the nuts that are poured onto the second sieve plate 201 are vibrated and screened to separate small particles of impurities, so that the small particles of impurities fall downward into the inclined surface of the U-shaped support plate 1 and are guided to the left for discharge.

[0039] The threaded horizontal adjustment measuring component is fixedly connected to the left side of the first sieve plate 2 and the second sieve plate 201. The threaded horizontal adjustment measuring component is used to adjust the horizontal movement of the second sieve plate 201. The horizontal movement of the second sieve plate 201 drives the upper sieve hole displacement, so that the upper sieve hole is partially offset from the lower sieve hole. The hole diameter adjustment is achieved by partially offsetting the upper and lower sieve holes.

[0040] It should be noted that the vertical vibration motor 301 preferably adopts the YZUL-10-4 series vibration motor. As for power supply, given that the nut processing site is a production site and there is no lack of power supply measures on site, the vertical vibration motor 301 of this device is connected to the mains power on site. It is connected to the power input interface of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules (not marked in the figure) to form a complete power supply circuit. This power supply scheme is a conventional power distribution method for industrial equipment, and all are conventional, mature and well-known methods, so it will not be described in detail here.

[0041] Furthermore, the top of the rectangular protrusion structure at the top of the conical cover 3 is welded to the bottom of the first screen plate 2.

[0042] Furthermore, such as Figure 3 and 4As shown, the vertical missile support assembly includes a support sleeve 4, a T-shaped guide rod 401, and a rubber sleeve 402. The front inner wall and the rear inner wall of the U-shaped support plate 1 are respectively fixedly connected to the two corresponding support sleeves 4. The T-shaped guide rod 401 is slidably sleeved in the corresponding support sleeve 4. The four T-shaped guide rods 401 are fixedly connected in a rectangular shape to the bottom of the first screen plate 2. The rubber sleeve 402 is bonded and fixed between the top of the corresponding support sleeve 4 and the bottom of the first screen plate 2. The rubber sleeve 402 is movably sleeved on the corresponding T-shaped guide rod 401.

[0043] In this embodiment, the support sleeve 4, T-shaped guide rod 401 and rubber sleeve 402 work together to drive the four T-shaped guide rods 401 to slide vertically within the four support sleeves 4 when the second screen plate 2 vibrates vertically. When the second screen plate 2 vibrates vertically, the four rubber sleeves 402 are cyclically compressed and released. The elasticity of the four rubber sleeves 402 is used to elastically support the second screen plate 201, so as to provide it with the conditions for slight vertical vibration.

[0044] Furthermore, such as Figure 1 , 3 As shown in Figure 4, the thread lateral adjustment measuring assembly includes a circular plate 5, a stop bar 501, a T-shaped screw 504, a rectangular tube 502, a rectangular rod 503, a pointer 505, and a scale 506. The bottom right side of the circular plate 5 is fixedly connected to the middle left side of the first sieve plate 2, and the top of the circular plate 5 is set as an inclined surface. The stop bar 501 is fixedly connected to the top right side of the circular plate 5, and the bottom of the stop bar 501 is in movable contact with the top left side of the second sieve plate 201. The top of the stop bar 501 is set as an inclined surface. The rectangular tube 502 is fixedly connected between the inner walls of the two sides of the circular plate 5. A rectangular rod 503 is slidably sleeved inside a rectangular tube 502. The right end of the rectangular rod 503 slides out to the outside of the spiral plate 5 and is fixedly connected to the left side of the second sieve plate 201. A T-shaped screw 504 is rotatably embedded in the left side of the spiral plate 5. A threaded hole is opened at the left end of the rectangular rod 503 for threaded connection with the T-shaped screw 504. A scale 506 is fixedly connected between the inner walls of the two sides of the spiral plate 5. A pointer 505 is fixedly connected to the bottom left side of the rectangular rod 503. The bottom end of the pointer 505 extends to the bottom of the rectangular tube 502 and cooperates with the front side of the scale 506.

[0045] In this embodiment, a rectangular through hole is provided at the bottom of the rectangular tube 502, and the pointer 505 is located inside the rectangular through hole and does not contact the inner wall of the rectangular through hole; this serves to allow the pointer 505 to move through; a circular through hole is provided on the left side of the U-shaped plate 5, and a bearing is fixedly sleeved in the circular through hole. The inner side of the inner ring of the bearing is fixedly connected to the outer side of the T-shaped screw 504, which serves to rotatably install the T-shaped screw 504; a transverse guide hole is provided on the inner wall of the right side of the U-shaped plate 5, which slides and fits with the outer side of the rectangular rod 503, serving to allow the rectangular rod 503 to pass through and to guide its transverse sliding.

[0046] In this implementation scheme, the T-shaped plate 5, the stop bar 501, the T-shaped screw 504, the rectangular tube 502, the rectangular rod 503, the pointer 505, and the scale 506 work together to rotate the T-shaped screw 504, causing it to rotate within the threaded hole and drive the rectangular rod 503 to slide to the right or move back to the left within the rectangular tube 502. The rectangular rod 503 drives the second sieve plate 201 to move to the right or move back to the left. The rectangular rod 503 also drives the pointer 505 to move laterally. By observing the position indicated by the pointer 505 on the scale 506, the operator can easily and accurately determine the lateral movement distance of the second sieve plate 201. The lateral movement of the second sieve plate 201 drives the displacement of the upper sieve holes, causing the upper sieve holes to be partially offset from the lower sieve holes. This partial offset of the upper and lower sieve holes allows for aperture adjustment, enabling flexible adjustment of the filter aperture according to nuts of different diameters and improving applicability.

[0047] It should be noted that the T-screw 504, the U-shaped plate 5, and the rectangular rod 503 are all made of stainless steel. The T-screw 504 has a high wear-resistant and load-bearing specification with a thread gap of 0.1-0.15mm on the outer side, and it tightly meshes with the threaded hole. Taking advantage of the advantages of stainless steel, such as high hardness, high wear resistance, and good maintenance-free performance, the tight meshing ensures long-term connection and drive support stability.

[0048] This embodiment facilitates the vibration screening and impurity removal of nuts, and automatically separates and discharges small particulate impurities and nuts, eliminating the need for manual removal of small particulate impurities and nuts separately afterward. This saves manual operation steps, improves ease of use, and allows for flexible adjustment of the screening and impurity removal aperture according to the specifications of different types of nuts, so as to meet the screening and impurity removal needs of various nut sizes and improve applicability.

[0049] The usage method of this embodiment is as follows: When using the adjustable aperture nut impurity removal sieve, start the vertical vibration motor 301. Upon startup, the vertical vibration motor 301 generates a vertical hard vibration force, which drives the second sieve plate 2 and the first sieve plate 201 to vibrate vertically at high frequency through the conical cover 3. When the second sieve plate 2 vibrates vertically, it drives the four T-shaped guide rods 401 to slide vertically within the four support sleeves 4 for vertical guidance. During the vertical vibration of the second sieve plate 2, the four rubber sleeves 402 are cyclically compressed and released, utilizing the elasticity of the four rubber sleeves 402 to provide elastic support for the second sieve plate 201, thus providing conditions for it to vibrate slightly vertically. The inclined first sieve plate 2 and... When the second screen plate 201 vibrates, it vibrates and screens the nuts poured onto it to remove small particles of impurities. The small particles of impurities fall downwards onto the inclined surface of the U-shaped support plate 1 and slide to the left for discharge. Since both the first screen plate 2 and the second screen plate 201 are inclined, the inclined surface formed by the vibration automatically vibrates and guides the nuts to the right and discharges them to the right side. Personnel can place the receiving box and the slag receiving box on the right and left sides of the U-shaped support plate 1, respectively. This achieves the effect of vibrating and removing impurities from the nuts and automatically separating and discharging the small particles of impurities and nuts. There is no need for manual removal of the small particles of impurities and nuts afterward, saving manual operation steps and improving the convenience of use.

[0050] When the impurity removal aperture needs to be adjusted, rotate the T-shaped screw 504 clockwise so that it rotates in the threaded hole and drives the rectangular rod 503 to slide to the right in the rectangular tube 502. The rectangular rod 503 drives the second sieve plate 201 to move to the right. The second sieve plate 201 drives the three L-shaped guide rods 202 to slide to the right in their respective transverse guide grooves. The rectangular rod 503 drives the pointer 505 to move laterally. By observing the scale position indicated by the pointer 505 on the scale 506, the operator can accurately judge the lateral movement distance of the second sieve plate 201. The lateral movement of the second sieve plate 201 drives the upper sieve hole to move, so that the upper sieve hole is partially offset from the lower sieve hole. By using the method of partially offsetting the upper and lower sieve holes, the sieve aperture can be flexibly adjusted according to the specifications of different types of nuts, so as to meet the sieve removal needs of various sizes of nuts and improve applicability.

[0051] Example 2

[0052] like Figure 5 As shown, this embodiment differs from Embodiment 1 in that: the conical cover 3 is detachably connected to the bottom of the first screen plate 2, the top of the rectangular protrusion structure at the top of the conical cover 3 is in movable contact with the bottom of the first screen plate 2, the top of the rectangular protrusion structure is provided with a rectangular slot, a rectangular block 302 is welded and fixed at the bottom of the first screen plate 2, a threaded groove is provided on the left side of the rectangular block 302, a knob bolt 303 is threadedly screwed into the threaded groove, and a threaded through hole is provided on the left side of the rectangular protrusion structure for threaded connection with the knob bolt 303.

[0053] It should be noted that when using the knob bolt 303, a rubber pad can be placed on the outside of its threaded section to press the rubber pad against the outside of the conical cover 3 for anti-slip work when tightening. The use of rubber pads and other washers for auxiliary anti-slip measures when using bolts is a basic and well-known method in the use of existing bolts, so it will not be elaborated on here.

[0054] This embodiment facilitates the disassembly and assembly of the conical cover 3, thereby facilitating the subsequent disassembly, assembly, removal, and maintenance of the vertical vibration motor 301, providing convenience for subsequent maintenance work, and further improving the flexibility of use.

[0055] The usage method of this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: Utilizing the provided rectangular slot, rectangular block 302, threaded groove, knob bolt 303, and threaded through hole, the rectangular block 302 is used to position the conical cover 3 through the rectangular slot. The knob bolt 303 is screwed into the threaded groove to lock the conical cover 3. Reversing the knob bolt 303 separates it from the threaded groove, releasing the lock and allowing the conical cover 3 to be lowered and separated from the rectangular block 302, thus disassembling the conical cover 3. During installation, the rectangular slot on the conical cover 3 is placed upwards onto the rectangular block 302, and then the knob bolt 303 is rotated forward to screw it into the threaded groove, locking the conical cover 3. This facilitates the disassembly and assembly of the conical cover 3, thereby simplifying the subsequent disassembly, removal, and maintenance of the vertical vibration motor 301, providing convenience for subsequent maintenance work, and further improving the flexibility of use.

[0056] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nut impurity removal sieve with adjustable aperture, comprising a U-shaped support plate (1), characterized in that: include: U-shaped support plate (1), the bottom inner wall of which is set as an inclined surface and tilted to the lower left; The first sieve plate (2) is inclined to the lower right and is in contact with the inner walls of the front and rear sides of the U-shaped support plate (1). The top of the first sieve plate (2) is in contact with the second sieve plate (201). Both the second sieve plate (201) and the first sieve plate (2) are provided with multiple sieve holes, and the sieve holes that are opposite each other are vertically connected. The L-shaped guide rods (202) are in three sets and are fixedly connected at equal intervals to the bottom right side of the second sieve plate (201). The first sieve plate (2) is slidably sleeved on the three L-shaped guide rods (202). The vertical missile support assembly consists of four sets that are fixedly connected in a rectangular shape to the bottom of the first sieve plate (2). The front inner wall and the rear inner wall of the U-shaped support plate (1) are fixedly connected to the corresponding two vertical missile support assemblies. A conical cover (3) has a rectangular protrusion structure at its top and is connected to the bottom of the first screen plate (2). A vertical vibration motor (301) is fixedly installed on the inner wall of the top of the conical cover (3) by four bolts. The threaded horizontal adjustment measuring component is fixedly connected to the left side of the first sieve plate (2) and the second sieve plate (201).

2. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The top of the rectangular protrusion structure at the top of the conical cover (3) is welded to the bottom of the first sieve plate (2).

3. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The conical cover (3) is detachably connected to the bottom of the first sieve plate (2).

4. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The top of the rectangular protrusion structure at the top of the conical cover (3) is in contact with the bottom of the first screen plate (2). A rectangular slot is provided at the top of the rectangular protrusion structure. A rectangular block (302) is welded and fixed at the bottom center of the first screen plate (2). A threaded groove is provided on the left side of the rectangular block (302). A knob bolt (303) is threaded into the threaded groove. A threaded through hole is provided on the left side of the rectangular protrusion structure and is threaded to the knob bolt (303).

5. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The vertical missile support assembly includes a support sleeve (4), a T-shaped guide rod (401), and a rubber sleeve (402). The front inner wall and the rear inner wall of the U-shaped support plate (1) are fixedly connected to the corresponding two support sleeves (4), respectively. The T-shaped guide rod (401) is slidably sleeved in the corresponding support sleeve (4). The four T-shaped guide rods (401) are fixedly connected in a rectangular shape to the bottom of the first screen plate (2). The rubber sleeve (402) is bonded and fixed between the top of the corresponding support sleeve (4) and the bottom of the first screen plate (2). The rubber sleeve (402) is movably sleeved on the corresponding T-shaped guide rod (401).

6. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The threaded horizontal adjustment measuring assembly includes a spiral plate (5), a stop bar (501), a T-shaped screw (504), a rectangular tube (502), a rectangular rod (503), a pointer (505), and a scale (506). The bottom right side of the spiral plate (5) is fixedly connected to the middle left side of the first sieve plate (2). The top of the spiral plate (5) is set as an inclined surface. The stop bar (501) is fixedly connected to the top right side of the spiral plate (5). The bottom of the stop bar (501) is in movable contact with the top left side of the second sieve plate (201). The top of the stop bar (501) is set as an inclined surface. The rectangular tube (502) is fixedly connected between the inner walls of the two sides of the circular plate (5). The rectangular rod (503) is slidably sleeved inside the rectangular tube (502). The right end of the rectangular rod (503) slides out to the outside of the circular plate (5) and is fixedly connected to the left side of the second sieve plate (201). The T-shaped screw (504) is rotatably embedded in the left side of the circular plate (5). The left end of the rectangular rod (503) has a threaded hole that is threadedly connected to the T-shaped screw (504). The scale (506) is fixedly connected between the inner walls of the two sides of the circular plate (5). The pointer (505) is fixedly connected to the bottom left side of the rectangular rod (503). The bottom end of the pointer (505) extends to the bottom of the rectangular tube (502) and cooperates with the front side of the scale (506).

7. The nut impurity removal sieve with adjustable aperture according to claim 1, characterized in that: The bottom of the U-shaped support plate (1) is fixedly connected to a spiral support, and the bottom of the spiral support is bonded with a vibration isolation pad.

8. The nut impurity removal sieve with adjustable aperture according to claim 6, characterized in that: The bottom of the rectangular tube (502) has a rectangular perforation, and the pointer (505) is located inside the rectangular perforation and does not contact the inner wall of the rectangular perforation.

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