Walnut grader

Abstract

The utility model relates to the technical field of walnut processing, in particular to a walnut classifier. The utility model aims to solve the problems that in the use process of a walnut grading device in the prior art, a large amount of peel ash exists on the surfaces of walnuts, and finally the taste of the walnuts is affected; in order to solve the problems of damage to the device and reduction of the service life of the device due to the fact that peel ash is left in the device at the same time, the walnut classifier comprises a feeding part, a classifying part and a discharging part, and the feeding part and the discharging part are arranged at the two ends of the classifying part respectively; the grading part comprises a sucking pump and a grading roller, the sucking pump is arranged in the area where the grading roller is located, and the area is pumped into negative pressure; the grading roller at least comprises a first-stage roller, a plurality of screen holes are formed in the first-stage roller, and the diameter of the screen holes is not larger than that of walnuts. The taste of walnuts can be improved through removal of peel ash, meanwhile, the peel ash is extracted from the device and cannot fall into other parts, and the service life of the walnut classifier is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of walnut processing, in particular to a walnut grader. Background Art

[0002] Walnuts are rich in protein, fat and carbohydrates, and contain a variety of trace elements and minerals such as calcium, phosphorus, iron and other trace elements and minerals that are essential to the human body, as well as a variety of vitamins such as carotene and riboflavin. They have the effects of benefiting the heart, enhancing brain function, and improving digestive system function. They also have an excellent taste and flavor, and are deeply loved by consumers. They are a common snack in people's daily lives. With the development of walnut processing technology, grading and screening has become an important part of walnut processing. It is an important process to ensure product quality and grade. At present, walnut grading mainly adopts methods such as manual selection and mechanical vibration.

[0003] The Chinese patent application publication number is CN218190879U, the application date is October 19, 2022, and the name is: A rolling walnut grading device, the disclosed technical solution includes a platform, a support column, a servo motor, a roller, a spiral strip, and a bearing box, the spiral strip is fixedly installed on the inner wall of the roller, and the surface of the roller is provided with a plurality of groups of sieve holes whose sizes gradually increase from left to right, and the sieve holes and the spiral strip are arranged alternately. The application drives the roller to rotate by setting a servo motor, and a spiral strip is fixedly installed on the inner wall of the roller, so that the walnuts in the roller can move from left to right under the transmission action of the spiral strip, and the smaller walnuts will first fall from the smaller sieve holes, and the larger walnuts will fall from the larger sieve holes, so that the walnuts can be graded according to the different sizes of the walnuts, and the spiral strip can prevent the walnuts from falling directly into the larger sieve holes on the right side of the roller, thereby improving the grading effect of the device on the walnuts. However, the walnut grading device still has disadvantages during use. A large amount of skin ash exists on the surface of the walnuts, which enters the next stage of walnut processing and ultimately affects the taste of the walnuts. Another part of the skin ash remains inside the walnut grading device, causing damage to the device itself and reducing the service life of the device. Utility Model Content

[0004] 1. Problems to be solved by utility models

[0005] Aiming at the technical problems that a large amount of ash remains on the surface of the walnuts during use of the walnut grading device in the prior art, which eventually affects the taste of the walnuts when entering the next stage of walnut processing; and another part of the ash remains inside the walnut grading device, causing damage to the device itself and reducing the service life of the device, the utility model provides a walnut grading machine, which can remove the ash on the surface of the walnuts while grading.

[0006] 2. Technical solution

[0007] In order to achieve the above purpose, the technical solution provided is:

[0008] The utility model provides a walnut grader, comprising a feeding part, a grading part and a discharging part, wherein the feeding part and the discharging part are respectively arranged at two ends of the grading part; the grading part comprises an air pump and a grading roller, wherein the air pump is arranged in the area where the grading roller is located to evacuate the area into a negative pressure; the grading roller comprises at least a first-stage roller, wherein a plurality of sieve holes are arranged on the first-stage roller, and the diameter of the sieve holes is not greater than the diameter of the walnut.

[0009] Furthermore, the discharging part comprises a discharging port arranged at the end of the grading drum, and a discharging port suction pump is arranged at the discharging port to pump the area into negative pressure.

[0010] Furthermore, the discharging part further comprises an air blowing device and a surrounding plate, wherein the air blowing device is arranged on the surrounding plate, and the air blowing device and the surrounding plate are simultaneously located between the grading drum and the discharging port.

[0011] Furthermore, the air blowing device comprises an air blowing pipe and a frame. The air blowing pipe is arranged on the enclosure through the frame. A plurality of air blowing holes are provided on the air blowing pipe.

[0012] Furthermore, the feeding part includes a hopper, a feed plate and a vibrating feeder, the feed plate is connected to the hopper and the grading roller, the vibrating feeder is arranged below the feed plate, and the vibrating feeder is arranged closely to the feed plate.

[0013] Furthermore, the grading roller includes N-stage rollers, N is an integer greater than or equal to 2, and the first-stage roller is sequentially connected to the second-stage roller to the N-stage roller via a connecting flange; the sieve holes on the first-stage roller to the N-stage roller are sequentially increased.

[0014] Furthermore, a plurality of spiral baffles are provided on the inner side of the wall of the grading drum. The spiral baffles are arranged obliquely from the inlet to the outlet of the grading drum, and a spiral channel is formed between the plurality of spiral baffles.

[0015] Furthermore, a baffle is arranged on the inner side of the grading drum wall, the baffle is arranged at the entrance of the grading drum and connected to the spiral baffle; and a rolling ring is also included, the rolling ring is arranged on the outer side wall of the grading drum and located at both ends of the grading drum.

[0016] Furthermore, a grading collection port is correspondingly arranged below each level of the grading drum.

[0017] Furthermore, the driving assembly includes a motor, a driving wheel and a driven wheel, the motor is connected to the driving wheel through a gear chain structure, the driving wheel is connected to the grading drum to drive the grading drum to rotate; the driven wheel is connected to the grading drum to support the grading drum.

[0018] 3. Beneficial effects

[0019] Compared with the existing known technology, the technical solution provided by the present invention has the following beneficial effects:

[0020] (1) The utility model provides a walnut grader, including a feeding part, a grading part and a discharging part, wherein the feeding part and the discharging part are respectively arranged at the two ends of the grading part; the grading part includes an air pump and a grading roller, wherein the air pump is arranged in the area where the grading roller is located, and the area is evacuated to a negative pressure; the grading roller at least includes a first-stage roller, wherein a plurality of sieve holes are provided on the first-stage roller, and the diameter of the sieve holes is not larger than the diameter of the walnut. Under the action of the air pump, the area where the grading roller is located is in a negative pressure state, thereby generating an adsorption force, causing the skin ash in the walnut to fly out of the sieve holes and be extracted by the air pump. The removal of the skin ash can improve the taste of the walnut. At the same time, the skin ash is extracted from the equipment and will not fall into other components, thereby increasing the service life of the walnut grader.

[0021] (2) The utility model provides a walnut grading machine, wherein the discharging part includes a discharging port arranged at the end of the grading drum, and a discharging port vacuum pump is arranged at the discharging port to evacuate the area into a negative pressure. The discharging part also includes a blowing device and a panel, wherein the blowing device is arranged on the panel, and the blowing device and the panel are simultaneously located between the grading drum and the discharging port. The blowing device includes a blowing pipe and a frame, wherein the blowing pipe is arranged on the panel through the frame, and a plurality of blowing holes are provided on the blowing pipe. When the walnuts pass through the blowing device, the skin ash that has not been completely removed from the walnuts is blown up by the airflow in the blowing holes, and the blown up skin ash is more easily extracted by the discharging port vacuum pump 31.

[0022] (3) The utility model provides a walnut grading machine, wherein the feeding part includes a hopper, a feed plate and a vibrating feeder, wherein the feed plate connects the hopper and the grading roller, and the vibrating feeder is arranged below the feed plate, and the vibrating feeder is arranged closely to the feed plate. The walnuts enter the feed plate from the hopper and then enter the grading roller. Under the vibration of the vibrating feeder, the walnuts can smoothly enter the grading roller through the feed plate. At the same time, the vibration of the vibrating feeder causes the skin ash in the walnuts to be shaken up, making it easy to remove.

[0023] (4) The utility model provides a walnut grading machine, wherein the grading rollers also include a second-stage roller to an N-stage roller, each stage roller has sieve holes on its inner wall, and each stage roller of the grading roller is connected by a connecting flange. The sieve hole sizes of each stage roller of the grading roller increase in sequence. The first stage roller mainly separates the skin ash and small broken kernels in the walnuts, the second stage roller mainly separates the broken kernels and skin ash in the walnuts, and the third stage roller mainly separates incomplete walnuts. Grading rollers can be added according to actual needs, and the size of the sieve holes on the inner wall of the rollers can be increased to separate walnuts of different sizes.

[0024] (5) The utility model provides a walnut grader, wherein a plurality of spiral baffles are provided on the inner side of the wall of the grader drum, and the spiral baffles are arranged obliquely from the inlet to the outlet of the grader drum, and a spiral channel is formed between the plurality of spiral baffles, so that the walnuts are regularly and slowly rolled forward in the grader drum, thereby improving the grading effect of the grader on the walnuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the utility model after the housing is hidden;

[0027] Figure 3 This is a schematic diagram of the overall structure of the utility model from another perspective after the housing is hidden;

[0028] Figure 4 This is the front view of the utility model after the housing is hidden;

[0029] Figure 5 This is a schematic diagram of the structure of the air blowing device in the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the grading roller in the utility model;

[0031] Figure 7 This is a schematic diagram of the internal structure of the grading drum of the utility model.

[0032] Explanation of the symbols in the schematic diagram:

[0033] 1. Feeding part; 11. Hopper cover; 12. Hopper; 13. Dust cover; 14. Vibrating feeder; 15. Feeding plate;

[0034] 2. Classification part; 21. Vacuum pump; 22. Classification collection port; 23. Casing; 24. Classification drum; 241. First-stage drum; 242. Second-stage drum; 243. Third-stage drum; 244. Connecting flange; 245. Roller ring; 246. Baffle; 247. Spiral baffle;

[0035] 3. Discharging part; 31. Discharging port vacuum pump; 32. Discharging port; 33. Air blowing device; 331. Air blowing pipe; 332. Air blowing hole; 333. Frame; 34. Enclosure;

[0036] 4. driving assembly; 41. motor; 42. driving wheel; 43. driven wheel; 44. driving shaft;

[0037] 5. Rack. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] Example 1

[0045] A walnut grader of the present embodiment, such as Figure 1-7As shown, it includes a feeding part 1, a grading part 2 and a discharging part 3, and the feeding part 1 and the discharging part 3 are respectively arranged at the two ends of the grading part 2; the grading part 2 includes an air pump 21 and a grading drum 24, and the air pump 21 is arranged in the area where the grading drum 24 is located, and the area is evacuated to a negative pressure. In this embodiment, a casing 23 is arranged on the periphery of the grading drum 24 to prevent dust from entering the grading drum 24. At the same time, the casing 23 encloses the area around the grading drum 24 into a closed space, and the air pump 21 is arranged on the upper part of the casing 23 to evacuate the closed space to a negative pressure. The grading drum 24 includes a first-stage roller-Nth-stage roller, where N is an integer greater than or equal to 2, and each stage of the roller is connected by a connecting flange 244, and a sieve hole is opened on the inner wall of each stage of the roller, and the sieve holes on the first-stage roller 241 to the Nth-stage roller increase in sequence. In this embodiment, the grading drum 24 includes a first-level drum 241, a second-level drum 242, and a third-level drum 243. The inner wall sieve hole size of the first-level drum 241 is 8mm (round hole), the inner wall sieve hole size of the second-level drum 242 is 12*18mm (waist hole), and the inner wall sieve hole size of the third-level drum 243 is 16*25mm (waist hole), and the spacing between the holes is 4mm. Under the action of the vacuum pump 21, the area where the grading drum 24 is located is in a negative pressure state, thereby generating an adsorption force, so that the skin ash in the walnut flies out of the sieve hole and is extracted by the vacuum pump 21. The first-level drum mainly separates the skin ash and small broken kernels in the walnut, the second-level drum mainly separates the broken kernels and skin ash in the walnut, and the third-level drum mainly separates incomplete walnuts. The grading collection port 22 is correspondingly set below each level of the grading drum 24, so that the skin ash is removed while the walnut is graded. The removal of the skin ash can improve the taste of the walnut, and the skin ash is extracted from the equipment and will not fall into other components, thereby increasing the service life of the walnut grader.

[0046] In other embodiments, the grading roller 24 may have only one or two levels, or grading rollers may be added according to actual needs, and the size of the sieve holes on the inner wall of the roller may be adjusted to separate walnuts of different sizes, thereby achieving walnut grading and removal of skin ash at the same time.

[0047] In the present embodiment of a walnut grader, the discharge part 3 includes a discharge port 32 disposed at the outlet end of the grading drum 24. In the present embodiment, the discharge port 32 is not directly connected to the grading drum 24, and the grading drum 24 is connected to the discharge port 32 via a panel 34, and the panel 34 encloses the area between the two into a closed space. A discharge port vacuum pump 31 is disposed at the discharge port 32 to evacuate the area into a negative pressure. In the present embodiment, the discharge port vacuum pump 31 is disposed above the discharge port 32, fixedly connected to the panel 34, and communicated with the closed space enclosed by the panel 34, thereby evacuating the closed space into a negative pressure. Figure 5As shown, the discharging part 3 also includes a blowing device 33 and a panel 34, and the blowing device 33 is arranged on the panel 34, and the blowing device 33 and the panel 34 are simultaneously located between the grading drum 24 and the discharging port 32. In this embodiment, the blowing device 33 is arranged on the lower side plate of the panel 34, and blows air upward to blow up the skin ash of the walnut, and cooperates with the discharge port suction pump 31 that sucks air from above to better remove the skin ash. The blowing device 33 includes a blowing pipe 331 and a frame 333, and the blowing pipe 331 is arranged on the panel 34 through the frame 333, and a plurality of blowing holes 332 are provided on the blowing pipe 331. In this embodiment, by setting the blowing device 33, when the walnut passes through the blowing device 33, the skin ash that has not been completely removed in the walnut is blown up by the airflow in the blowing hole 332, and the blown skin ash is easier to be extracted by the discharge port suction pump 31.

[0048] A walnut grader of the present embodiment, the feeding part 1 comprises a hopper cover 11, a hopper 12, a dust cover 13, a feed plate 15 and a vibrating feeder 14, the feed plate 15 connects the hopper 12 and the grading roller 24, the vibrating feeder 14 is arranged below the feed plate 15, and the vibrating feeder 14 is arranged closely to the feed plate 15. Walnuts enter the feed plate 15 from the hopper 12, and then enter the grading roller 24. The vibrating feeder 14 is provided in the present embodiment, and under the action of the vibration of the vibrating feeder 14, the walnuts can smoothly enter the grading roller 24 through the feed plate 15, and under the action of the vibration, the skin ash in the walnuts is shaken up, which is easier to remove. The hopper cover 11 is arranged above the hopper 12 to prevent the walnuts from escaping from the hopper 12 during the vibration process. The dust cover 13 is arranged between the hopper 12 and the grading roller 24 to prevent dust from entering the grading roller 24.

[0049] A walnut grader of the present embodiment, such as Figure 7 As shown, the inner side of the wall of the grading drum 24 is also provided with a plurality of spiral baffles 247, which are arranged obliquely from the entrance to the exit of the grading drum 24, and a spiral channel is formed between the plurality of spiral baffles 247. The plurality of spiral baffles 247 arranged in this embodiment form a spiral channel, so that the walnuts roll forward slowly and regularly in the grading drum, thereby improving the grading effect of the walnut grading machine on the walnuts. Figure 6 As shown, a baffle 246 is also provided on the inner side of the wall of the grading drum 24. The baffle 246 is provided at the entrance of the grading drum 24 and is connected to the spiral baffle 247. The baffle 246 can prevent the walnuts from falling outside the grading drum due to rolling. The grading drum 24 also includes a rolling ring 245, which is provided on the outer side wall of the grading drum 24 and located at both ends of the grading drum 24.

[0050] A walnut grader of the present embodiment, such as Figure 1-4As shown, it also includes a driving component 4 and a frame 5. The driving component 4 is arranged on the frame 5. The driving component 4 includes a motor 41, a driving wheel 42, a driven wheel 43 and a driving shaft 44. The motor 41 is connected to the driving shaft 44 on the driving wheel 42 through a gear chain structure (hidden components are not shown in the attached drawings), and the driving wheel 42 is connected to the roller ring 245 on the grading drum 24 to drive the grading drum 24 to rotate; the driven wheel 43 is connected to the roller ring 245 on the grading drum 24 to support the grading drum 24.

[0051] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A walnut grader, comprising a feeding part (1), a grading part (2) and a discharging part (3), wherein the feeding part (1) and the discharging part (3) are respectively arranged at two ends of the grading part (2); characterized in that: The grading part (2) comprises an air pump (21) and a grading roller (24); the air pump (21) is arranged in the area where the grading roller (24) is located to evacuate the area into a negative pressure; the grading roller (24) comprises at least a first-stage roller (241); a plurality of sieve holes are provided on the first-stage roller (241); the diameter of the sieve holes is not greater than the diameter of the walnut.

2. A walnut grader according to claim 1, characterized in that: The discharge portion (3) comprises a discharge port (32) arranged at the end of the grading drum (24), and a discharge port suction pump (31) is arranged at the discharge port (32) to pump the area into a negative pressure.

3. A walnut grader according to claim 2, characterized in that: The discharging part (3) further comprises a blowing device (33) and a surrounding plate (34), wherein the blowing device (33) is arranged on the surrounding plate (34), and the blowing device (33) and the surrounding plate (34) are simultaneously located between the grading drum (24) and the discharging port (32).

4. A walnut grader according to claim 3, characterized in that: The air blowing device (33) comprises an air blowing pipe (331) and a frame (333); the air blowing pipe (331) is arranged on the enclosure (34) through the frame (333); and a plurality of air blowing holes (332) are provided on the air blowing pipe (331).

5. A walnut grader according to claim 1, characterized in that: The feeding part (1) comprises a hopper (12), a feeding plate (15) and a vibrating feeder (14); the feeding plate (15) connects the hopper (12) and a grading roller (24); the vibrating feeder (14) is arranged below the feeding plate (15); and the vibrating feeder (14) and the feeding plate (15) are arranged in close contact.

6. A walnut grader according to claim 1, characterized in that: The grading roller (24) comprises N-stage rollers, N being an integer greater than or equal to 2, and the first-stage roller (241) is sequentially connected to the second-stage roller (242) to the N-stage roller via a connecting flange (244); the sieve holes on the first-stage roller (241) to the N-stage roller are sequentially increased.

7. A walnut grader according to claim 1 or 6, characterized in that: A plurality of spiral baffles (247) are also provided on the inner side of the wall of the grading drum (24), and the spiral baffles (247) are arranged obliquely from the entrance to the exit of the grading drum (24), and a spiral channel is formed between the plurality of spiral baffles (247).

8. A walnut grader according to claim 7, characterized in that: The grading drum (24) is also provided with a baffle (246) on the inner side of the cylinder wall. The baffle (246) is provided at the entrance of the grading drum (24) and is connected to the spiral baffle (247). The grading drum (244) also includes a rolling ring (245). The rolling ring (245) is provided on the outer side wall of the grading drum (24) and is located at both ends of the grading drum (24).

9. A walnut grader according to claim 6, characterized in that: A grading collection port (22) is correspondingly arranged below each level of the grading roller (24).

10. A walnut grader according to claim 1, characterized in that: The invention also comprises a driving assembly (4), wherein the driving assembly (4) comprises a motor (41), a driving wheel (42) and a driven wheel (43), wherein the motor (41) is connected to the driving wheel (42) via a gear chain structure, and the driving wheel (42) is connected to the grading drum (24) for driving the grading drum (24) to rotate; and the driven wheel (43) is connected to the grading drum (24) for supporting the grading drum (24).

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