A pistachio shelling mechanism

Abstract

This utility model discloses a pistachio shelling mechanism, comprising: a movable grinding disc, a second toothed plate fixedly mounted on the outer surface of the movable grinding disc, a stationary grinding disc sleeved on the movable grinding disc, and a first toothed plate fixedly mounted on the inner wall of the stationary grinding disc. The lower end of the first toothed plate is inclined towards the movable grinding disc, making the annular space between the first and second toothed plates wider at the top and narrower at the bottom. In this pistachio shelling mechanism, the rotation of the movable grinding disc drives the rotation of the second toothed plate. The material is squeezed and kneaded by the teeth of the first and second toothed plates, achieving shelling. Because the annular space between the first and second toothed plates is wider at the top and narrower at the bottom, smaller materials are shelled in the lower part of the annular space, and larger materials are shelled in the upper part of the annular space. This allows for the simultaneous shelling of materials with different sizes, improving the adaptability of pistachios to the shelling equipment, reducing kernel damage when shelling larger materials, and preventing smaller materials from being shelled completely, thereby increasing the whole kernel yield.

Description

Technical Field

[0001] This utility model relates to the field of nut peeling technology, and in particular to a pistachio peeling mechanism. Background Technology

[0002] Pistachios, scientifically known as *Pistacia chinensis*, are perennial deciduous fruit trees belonging to the *Pistacia* genus of the Anacardiaceae family. Their fruits are rich in vitamins, minerals, and antioxidants, and are characterized by low fat, low calories, and high fiber, making them a popular health and snack food in the nut market. In recent years, they have become the world's fifth largest nut crop. Pistachios can adapt to harsh growing conditions, exhibiting drought resistance, heat resistance, and tolerance to saline-alkali soils, making them suitable for large-scale cultivation in arid regions and hilly slopes.

[0003] Pistachios need to be shelled during processing to separate the shell from the kernel. However, pistachios vary in size, and when they are squeezed and kneaded between the teeth of the shelling plate, larger pistachios are more likely to have their kernels damaged during shelling, while smaller pistachios are more likely to remain whole and difficult to shell, resulting in poor shelling efficiency and a low percentage of whole kernels. Utility Model Content

[0004] This invention provides a pistachio shelling mechanism, which can solve the problems of poor shelling effect and low whole kernel rate of pistachios mentioned in the background art.

[0005] A pistachio shelling mechanism includes: a movable grinding disc, wherein a second toothed plate is fixedly mounted on the outer surface of the movable grinding disc; The moving grinding disc is fitted with a stationary grinding disc, and a first toothed plate is fixedly installed on the inner wall of the stationary grinding disc. The lower end of the first toothed plate is inclined towards the moving grinding disc, so that the annular space between the first toothed plate and the second toothed plate is wider at the top and narrower at the bottom.

[0006] Preferably, the stationary grinding disc is mounted on an external frame, and the stationary grinding disc has multiple discharge troughs.

[0007] Preferably, a sliding plate is fixedly installed on the top of the moving grinding disc, and the sliding plate is a conical plate.

[0008] Preferably, the outer surface of the sliding plate is provided with a plurality of material baffles.

[0009] Preferably, the material receiving plate is provided on the outside of the material sliding plate, and the material receiving plate has multiple material discharge ports.

[0010] Preferably, a baffle plate is fixed to the outer surface of the receiving plate by bolts, and the baffle plate is located at the discharge port.

[0011] Preferably, the baffle plate has an elongated mounting hole.

[0012] Preferably, the stationary grinding disc is fixedly mounted with a guide plate, the guide plate is provided with a fixing part, and the fixing part is fixedly mounted in the discharge trough.

[0013] Preferably, the fixing part is connected to the pushing part, and the pushing part is bent in the radial direction of the stationary grinding disc.

[0014] Preferably, the pushing part is connected to the blocking part, and the blocking part is disposed above the stationary grinding disc.

[0015] The beneficial effects of this utility model are: In this pistachio shelling mechanism, pistachio material falls into the annular space between the first and second toothed plates. The rotating grinding disc drives the second toothed plate to rotate, causing the first and second toothed plates to rotate relative to each other. The material is squeezed and kneaded by the teeth of the first and second toothed plates, thus achieving shelling. Because the annular space between the first and second toothed plates is wider at the top and narrower at the bottom, smaller materials are shelled in the lower part of the annular space, while larger materials are shelled in the upper part. This allows for the simultaneous shelling of materials with different sizes, improving the adaptability of pistachio material to the shelling equipment, reducing kernel damage when shelling larger materials, and preventing smaller materials from being shelled, thereby increasing the whole kernel yield. Attached Figure Description

[0016] Figure 1 A schematic diagram of a pistachio peeling mechanism provided by this utility model; Figure 2 A bottom view of a pistachio peeling mechanism provided by this utility model; Figure 3 Exploded view of a pistachio peeling mechanism provided for this utility model; Figure 4 A cross-sectional view of a pistachio peeling mechanism provided by this utility model; Figure 5 for Figure 1 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the guide plate.

[0017] Explanation of reference numerals in the attached figures: 1. Static grinding disc; 11. Discharge chute; 2. First toothed plate; 3. Moving grinding disc; 4. Second toothed plate; 5. Receiving plate; 51. Discharge port; 6. Sliding plate; 61. Material baffle; 7. Guide plate; 71. Fixing part; 72. Pushing part; 73. Blocking part; 8. Baffle plate; 81. Mounting hole. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 2-3 As shown, this utility model proposes a pistachio shelling mechanism, including: a movable grinding disc 3, which consists of an annular plate and a support. An external rotating shaft is connected to the center of the support, and the rotating shaft is driven to rotate by a motor in an external device, thereby realizing the rotation of the movable grinding disc 3. A second toothed plate 4 is fixedly installed on the outer surface of the movable grinding disc 3.

[0020] like Figures 1-2 As shown, a sliding plate 6 is fixedly installed on the top of the moving grinding disc 3. The sliding plate 6 is a conical plate, allowing the pistachio material to move downwards along its inclined surface. Several material baffles 61 are provided on the inclined outer surface of the sliding plate 6. A rotating shaft in an external device is connected to the center of the sliding plate 6, allowing the shaft to rotate synchronously with the sliding plate 6 and the moving grinding disc 3. A receiving enclosure 5 is provided on the outside of the sliding plate 6 and is fixed to the external frame. The receiving enclosure 5 has multiple discharge ports 51. When the moving grinding disc 3 rotates, the material baffles 61 on the sliding plate 6 cause the material to rotate. During rotation, the material moves downwards to the discharge ports 51 of the receiving enclosure 5, dispersing the material and preventing accumulation.

[0021] A baffle plate 8 is bolted to the outer surface of the receiving plate 5. The baffle plate 8 is located at the discharge port 51, and each discharge port 51 corresponds to one baffle plate 8. The baffle plate 8 has an elongated mounting hole 81. When adjusting the opening of the discharge port 51, loosen the bolt, move the baffle plate 8 vertically, and adjust the relative position between the mounting hole 81 and the bolt until the opening of the discharge port 51 is adjusted to the required opening. Then tighten the bolt, so that the operator can adjust the discharge rate per unit time based on the total material quantity.

[0022] like Figures 2-4 , Figure 6 As shown, the moving grinding disc 3 is equipped with a stationary grinding disc 1, which is mounted on an external frame and has multiple discharge slots 11.

[0023] Specifically, the stationary grinding disc 1 is mounted on an external frame, which is equipped with a worm gear lift and a servo motor. The stationary grinding disc 1 can move up and down by driving the worm gear lift via the servo motor; this is existing technology and will not be described in detail here. A first toothed plate 2 is fixedly installed on the inner wall of the stationary grinding disc 1. The first toothed plate 2 needs to be installed to avoid the material discharge chute 11. The toothed side of the first toothed plate 2 is positioned opposite to the toothed side of the second toothed plate 4, so that both sides of the pistachio material are subjected to toothed compression and friction. Since the stationary grinding disc 1 has a circular structure that is narrow at the top and wide at the bottom, the inner wall of the stationary grinding disc 1 is inclined, causing the lower end of the first toothed plate 2 to tilt towards the moving grinding disc 3. Therefore, the annular space between the first toothed plate 2 and the second toothed plate 4 is wider at the top and narrower at the bottom, which facilitates the material entering the shelling zone (i.e., the annular space between the first toothed plate 2 and the second toothed plate 4).

[0024] In this embodiment, pistachio material is fed onto the sliding plate 6. The pistachio material slides downward from the feed port 51 and falls into the shelling zone. As the moving grinding disc 3 rotates, the second toothed plate 4 rotates accordingly. The first toothed plate 2 and the second toothed plate 4 rotate relative to each other. At this time, the material in the shelling zone is squeezed and kneaded by the teeth of the first toothed plate 2 and the second toothed plate 4, achieving rapid and continuous feeding and shelling, effectively improving shelling efficiency. Because the annular space between the first toothed plate 2 and the second toothed plate 4 is wider at the top and narrower at the bottom, smaller materials fall to the lower section of the shelling zone under gravity for shelling, while larger materials are shelled in the upper section. This allows for the simultaneous shelling of materials with similar sizes, improving the adaptability of pistachio material to the shelling equipment, reducing kernel damage when shelling larger materials, and preventing smaller materials from being shelled completely, thereby increasing the whole kernel yield.

[0025] In addition, such as Figure 6 As shown, the stationary grinding disc 1 can also be driven by a servo motor to operate a worm gear lift, thereby achieving vertical movement. This is used to adjust the gap between the second toothed plate 4 on the moving grinding disc 3 and the first toothed plate 2 on the stationary grinding disc 1, allowing for the switching of peeling materials in various size ranges. For example, after peeling materials with a diameter in the range of 2cm-2.5cm, if it is necessary to peel materials with a diameter in the range of 1.5cm-2cm, the stationary grinding disc 1 is moved upwards, adjusting the minimum distance between the first toothed plate 2 and the second toothed plate 4 from 2cm to 1.5cm.

[0026] The gap between the lower end face of the receiving baffle 5 and the lower end face of the sliding plate 6 is set within 5mm to prevent smaller materials from passing through the gap and directly entering the shelling zone or falling directly into the receiving hopper below the stationary grinding disc 1 (not shown in the figure), which would increase the amount of unshelled material and the phenomenon of kernels remaining in the shell, thus reducing the shelling rate and production efficiency. Adjusting the height of the material baffle 61 can also control the speed at which the material enters the shelling zone, making it easy to adjust the material feeding speed according to production needs.

[0027] like Figure 5 , Figure 7 As shown, a guide plate 7 is also fixedly installed on the stationary grinding disc 1. The guide plate 7 has a fixing part 71, which is fixedly installed inside the discharge trough 11. The fixing part 71 is connected to a pushing part 72, which bends radially towards the stationary grinding disc 1 to facilitate pushing the material in the shelling area to the adjacent discharge trough 11 when the moving grinding disc 3 rotates. When the moving grinding disc 3 rotates, it drives the guide plate 7 to rotate. The shells and kernels formed after shelling move under the action of the pushing part 72 until they reach the discharge trough 11. The shells and kernels slide down from the discharge trough 11 and enter the subsequent screening process. The pushing part 72 is also connected to a blocking part 73, which is located above the stationary grinding disc 1 and correspondingly positioned outside the discharge port 51 to prevent the material flowing out of the discharge port 51 from being ejected outward due to impact.

[0028] Working principle: Pistachio material is fed into the sliding plate 6. The pistachio material slides down from the discharge port 51 and falls into the shelling zone. As the moving grinding disc 3 rotates, the second toothed plate 4 rotates accordingly. The first toothed plate 2 and the second toothed plate 4 rotate relative to each other. At this time, the material in the shelling zone is squeezed and kneaded by the teeth of the first toothed plate 2 and the second toothed plate 4, achieving rapid and continuous feeding and shelling. Because the annular space between the first toothed plate 2 and the second toothed plate 4 is wider at the top and narrower at the bottom, smaller materials fall to the lower section of the shelling zone under the action of gravity for shelling, while larger materials are located in the upper section of the shelling zone for shelling, realizing the simultaneous shelling of materials with different sizes.

[0029] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A pistachio shelling mechanism, characterized in that, include: A rotatable grinding disc (3), on the outer surface of which a second toothed plate (4) is fixedly installed; The moving grinding disc (3) is fitted with a stationary grinding disc (1). A first toothed plate (2) is fixedly installed on the inner wall of the stationary grinding disc (1). The lower end of the first toothed plate is inclined toward the moving grinding disc (3), so that the annular space between the first toothed plate (2) and the second toothed plate (4) is wider at the top and narrower at the bottom.

2. The pistachio shelling mechanism as described in claim 1, characterized in that, The stationary grinding disc (1) is mounted on an external frame, and the stationary grinding disc (1) has multiple discharge slots (11).

3. The pistachio shelling mechanism as described in claim 1, characterized in that, The top of the moving grinding disc (3) is fixedly equipped with a sliding plate (6), which is a conical plate.

4. The pistachio shelling mechanism as described in claim 3, characterized in that, The outer surface of the sliding plate (6) is provided with several material baffles (61).

5. A pistachio shelling mechanism as described in claim 3, characterized in that, The material receiving plate (6) is provided with a material receiving enclosure (5) on its outside, and the material receiving enclosure (5) has multiple material discharge ports (51).

6. A pistachio shelling mechanism as described in claim 5, characterized in that, The outer surface of the receiving plate (5) is fixed with a baffle plate (8) by bolts, and the baffle plate (8) is located at the discharge port (51).

7. A pistachio shelling mechanism as described in claim 6, characterized in that, The baffle plate (8) has an elongated mounting hole (81).

8. A pistachio shelling mechanism as described in claim 2, characterized in that, The stationary grinding disc (1) is fixedly installed with a guide plate (7), and the guide plate (7) is provided with a fixing part (71), which is fixedly installed in the discharge trough (11).

9. A pistachio shelling mechanism as described in claim 8, characterized in that, The fixing part (71) is connected to the pushing part (72), which bends in the radial direction of the stationary grinding disc (1).

10. A pistachio hulling mechanism as claimed in claim 9 wherein, The pushing part (72) is connected to the blocking part (73), which is located above the stationary grinding disc (1).

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