A cold pressing device for fruit and vegetable juice

Abstract

This utility model relates to the technical field of fruit and vegetable juice production equipment, and more particularly to a cold pressing device for fruit and vegetable juice. The technical solution includes a crushing and grinding cylinder and a juicing cylinder. The juicing cylinder is connected to the lower surface of the crushing and grinding cylinder. A hollow shaft is installed on the upper surface of the crushing and grinding cylinder, and a crushing column is connected to the bottom end of the hollow shaft. A plurality of crushing blades are evenly installed on the outer surface of the crushing column. A grinding cone is connected to the bottom end of the crushing column. A conical grinding ring is installed inside the crushing and grinding cylinder, and the grinding cone passes through the conical grinding ring. A pressing rod is connected to the bottom end of the grinding cone. A pressing thread is provided on the outer surface of the pressing rod. A juicing filter is installed inside the juicing cylinder, and the pressing thread is located inside the juicing filter. This utility model enables the fruit and vegetable juice to be cold-pressed during the juicing process, avoiding oxidation caused by temperature increases and ensuring the quality of the fruit and vegetable juice.

Description

Technical Field

[0001] This utility model relates to the technical field of fruit and vegetable juice production equipment, specifically a cold pressing device for fruit and vegetable juice. Background Technology

[0002] Fruit and vegetable juice is a beverage made from fresh fruits and vegetables. It is produced by removing some or all of the pulp through processes such as pressing and extraction. It retains the rich vitamins (such as vitamin C and vitamin A), minerals (such as potassium and magnesium), and natural phytochemicals (such as anthocyanins and dietary fiber, which are retained in some processes) of the fruits and vegetables. It also transforms the nutrients of the fruits and vegetables into a liquid form that is more easily absorbed by the human body, meeting the needs for quick replenishment of nutrients and refreshing thirst.

[0003] In current high-speed pressing processes for fruit and vegetable juices, the high-speed rotation of the blades inside the equipment generates a large amount of frictional heat, causing the juice temperature to rise and rapidly react with oxygen in the air. This results in a deterioration in the taste of the juice and a significant loss of nutrients such as vitamin C and polyphenols, thus reducing the quality of the juice. To address this, we propose a cold pressing device for fruit and vegetable juices. Utility Model Content

[0004] The purpose of this invention is to provide a cold-pressing device for fruit and vegetable juices, which enables the juice to be cold-pressed during the juicing process, avoiding oxidation caused by temperature rise and ensuring the quality of the juice. This solves the problem that in current high-speed pressing processes, the high-speed rotation of the blades inside the equipment generates a large amount of frictional heat, causing the juice temperature to rise and rapidly oxidize with oxygen in the air, resulting in a deterioration in taste and significant loss of nutrients such as vitamin C and polyphenols, thus reducing the quality of the juice.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cold pressing device for fruit and vegetable juice, comprising a crushing and grinding cylinder and a juicing cylinder. The lower surface of the crushing and grinding cylinder is connected to the juicing cylinder. A hollow shaft is installed on the upper surface of the crushing and grinding cylinder, and a crushing column is connected to the bottom end of the hollow shaft. A plurality of crushing blades are evenly installed on the outer surface of the crushing column. A grinding cone is connected to the bottom end of the crushing column. A conical grinding ring is installed inside the crushing and grinding cylinder, and the grinding cone passes through the conical grinding ring. A pressing rod is connected to the bottom end of the grinding cone. A pressing thread is provided on the outer surface of the pressing rod. A juicing filter cylinder is installed inside the juicing cylinder, and the pressing thread is located inside the juicing filter cylinder. A squeezing cone is sleeved on the outer surface of the pressing rod below the pressing thread. A water outlet pipe and a water inlet pipe are respectively connected to the top end of the hollow shaft and the bottom end of the pressing rod.

[0006] Preferably, a feed hopper is installed on one side of the upper surface of the crushing and grinding cylinder, and a juice outlet pipe is connected to the outer surface of the juicing cylinder at a position above the extrusion cone.

[0007] Preferably, a transmission box is installed on the upper surface of the crushing and grinding cylinder, and a hollow shaft passes through the transmission box. A transmission gear is sleeved on the outer surface of the hollow shaft. A rotating motor is installed on one side of the upper surface of the transmission box. A motor gear is connected to the end of the output shaft of the rotating motor. Both the motor gear and the transmission gear are located inside the transmission box and mesh with each other.

[0008] Preferably, a grinding gap is formed between the outer surface of the grinding cone and the inner wall of the conical grinding ring, and the width of the grinding gap decreases from top to bottom.

[0009] Preferably, a squeezing gap is formed between the outer surface of the squeezing cone and the inner wall of the juicing cylinder, and the width of the squeezing gap decreases from top to bottom.

[0010] Preferably, a number of connecting rods are connected in a circular array at equal intervals near the edge of the lower surface of the juicing cylinder, and the ends of the connecting rods are connected to retaining rings, through which the pressing rod passes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a crushing and grinding cylinder, a juicing cylinder, a hollow shaft, a crushing column, crushing blades, a grinding cone, a conical grinding ring, a pressing rod, a pressing thread, a juicing filter cylinder, a squeezing cone, a water inlet pipe, and a water outlet pipe, achieves the effect of cold pressing of fruit and vegetable juice during the juicing process, avoiding oxidation caused by temperature rise and ensuring the quality of the fruit and vegetable juice. After fresh fruits and vegetables are put into the crushing and grinding cylinder, the hollow shaft drives the crushing column, grinding cone, and pressing rod to rotate. First, the crushing blades on the outer surface of the crushing column preliminarily cut the fruits and vegetables, breaking them into small pieces. Then, the crushed fruits and vegetables enter the gap between the grinding cone and the conical grinding ring, where they are finely ground to completely destroy the fine particles of the fruits and vegetables. The cell wall structure forms a fine fruit and vegetable puree. Then, the puree flows naturally into the juicing cylinder. The pressing threads on the surface of the pressing rod continuously apply pushing and squeezing forces to the puree in the juicing filter cylinder, causing the juice to flow out through the filter holes of the juicing filter cylinder. The fruit and vegetable residue is smoothly discharged along the gap between the pressing cone and the juicing cylinder, completing the solid-liquid separation. During the juicing process, cooling water enters the inside of the pressing rod through the water inlet pipe, and then flows sequentially along the inside of the grinding cone, crushing column, and hollow shaft, and finally exits from the water outlet pipe. The cooling water carries away the heat generated by the mechanical action in each stage of juicing, effectively controlling the temperature of the area where the fruit and vegetables are in contact with the equipment, avoiding the oxidation of the fruit and vegetable juice caused by high temperature, and ensuring the quality of the fruit and vegetable juice.

[0013] 2. By setting a connecting rod and a retaining ring, this utility model can block the fruit and vegetable residue flowing out from the extrusion gap, so as to prevent the fruit and vegetable residue from adhering to the water inlet pipe. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial three-dimensional cross-sectional view of the hollow shaft of this utility model;

[0016] Figure 3 This is a partial three-dimensional cross-sectional view of the crushing and grinding cylinder and the juicing cylinder of this utility model;

[0017] Figure 4 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0018] Reference numerals: 1. Water outlet pipe; 2. Hollow shaft; 3. Feed hopper; 4. Crushing and grinding cylinder; 5. Juicing cylinder; 6. Water inlet pipe; 7. Transmission box; 8. Rotating motor; 9. Crushing column; 10. Crushing blade; 11. Grinding cone; 12. Pressing rod; 13. Pressing thread; 14. Extrusion cone; 15. Conical grinding ring; 16. Juicing filter cylinder; 17. Retaining ring; 18. Connecting rod; 19. Juice outlet pipe; 20. Transmission gear; 21. Grinding gap; 22. Extrusion gap. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figures 1-4 As shown, the present invention proposes a cold pressing device for fruit and vegetable juice, including a crushing and grinding cylinder 4 and a juicing cylinder 5. A feeding hopper 3 is installed on one side of the upper surface of the crushing and grinding cylinder 4, and the juicing cylinder 5 is connected to the lower surface of the crushing and grinding cylinder 4. A hollow shaft 2 is installed on the upper surface of the crushing and grinding cylinder 4, and a transmission box 7 is installed on the upper surface of the crushing and grinding cylinder 4, through which the hollow shaft 2 passes. A transmission gear 20 is sleeved on the outer surface of the hollow shaft 2. A rotating motor 8 is installed on one side of the upper surface of the transmission box 7, and a motor gear is connected to the end of the output shaft of the rotating motor 8. The motor gear and the transmission gear 20 are both located inside the transmission box 7 and mesh with each other. The rotating motor 8 drives the hollow shaft 2 to rotate through the meshing motor gear and the transmission gear 20.

[0022] Hollow shaft 2 passes through crushing and grinding cylinder 4. The top of the inner wall of crushing and grinding cylinder 4 is connected to hollow shaft 2 via a bearing. A crushing column 9 is connected to the bottom of hollow shaft 2. The crushing column 9 is hollow inside and communicates with the interior of hollow shaft 2. Several crushing blades 10 are evenly installed on the outer surface of crushing column 9. The upper surface of crushing column 9 is a conical slope to allow fruits and vegetables to slide between crushing column 9 and crushing and grinding cylinder 4 and be chopped by the crushing blades 10. A grinding cone 11 is connected to the bottom of crushing column 9. The outer diameter of the grinding cone 11 decreases from top to bottom. The grinding cone 11 is hollow inside and is connected to the inside of the crushing column 9. A conical grinding ring 15 is installed inside the crushing and grinding cylinder 4. The inner diameter of the conical grinding ring 15 decreases from top to bottom, and the grinding cone 11 passes through the conical grinding ring 15. A grinding gap 21 is formed between the outer surface of the grinding cone 11 and the inner wall of the conical grinding ring 15. The width of the grinding gap 21 decreases from top to bottom. The crushed fruit and vegetable pieces fall into the grinding gap 21 and are gradually ground into fruit and vegetable puree.

[0023] A pressing rod 12 is connected to the bottom end of the grinding cone 11. The pressing rod 12 passes through the juicing cylinder 5, and its bottom end is located below the juicing cylinder 5. A pressing thread 13 is provided on the outer surface of the pressing rod 12. A juicing filter cylinder 16 is installed inside the juicing cylinder 5, and the pressing thread 13 is located inside the juicing filter cylinder 16. A squeezing cone 14 is fitted onto the outer surface of the pressing rod 12 below the pressing thread 13. A squeezing gap 22 is formed between the outer surface of the squeezing cone 14 and the inner wall of the juicing cylinder 5. The width of the extrusion gap 22 decreases from top to bottom, and the fruit and vegetable residue is extruded through the extrusion gap 22. The top of the hollow shaft 2 and the bottom of the pressing rod 12 are respectively connected to the water outlet pipe 1 and the water inlet pipe 6. The hollow shaft 2, the crushing column 9, the grinding cone 11 and the pressing rod 12 are all made of heat-conducting materials. The water outlet pipe 1 and the hollow shaft 2, as well as the pressing rod 12 and the water inlet pipe 6 are connected by rotary joints. The juice outlet pipe 19 is connected to the outer surface of the juicing cylinder 5 at the position above the extrusion cone 14.

[0024] In use, fresh fruits and vegetables are fed into the crushing and grinding cylinder 4 through the feed hopper 3. The hollow shaft 2 drives the crushing column 9, grinding cone 11, and pressing rod 12. First, the crushing blades 10 on the outer surface of the crushing column 9 perform preliminary cutting of the fruits and vegetables, breaking them into small pieces. Then, the crushed fruits and vegetables enter the grinding gap 21 between the grinding cone 11 and the conical grinding ring 15. Through fine grinding, the cell wall structure of the fruits and vegetables is completely destroyed, forming a fine fruit and vegetable puree. Next, the fruit and vegetable puree flows naturally into the juicing cylinder 5. The pressing threads 13 on the surface of the pressing rod 12 continuously press the fruit and vegetable puree in the juicing filter cylinder 16. Applying pushing and squeezing forces causes the juice to flow out through the filter holes of the juicing filter cylinder 16, while the fruit and vegetable residue is smoothly discharged along the squeezing gap 22 between the squeezing cone 14 and the juicing cylinder 5, completing the solid-liquid separation. During the juicing process, cooling water enters the interior of the pressing rod 12 through the water inlet pipe 6, and then flows sequentially along the interior of the grinding cone 11, the crushing column 9, and the hollow shaft 2, and is finally discharged from the water outlet pipe 1. The cooling water carries away the heat generated by the mechanical action in each stage of juicing, effectively controlling the temperature of the area where the fruit and vegetables are in contact with the equipment, avoiding the oxidation of fruit and vegetable juice caused by high temperature, and ensuring the quality of fruit and vegetable juice.

[0025] Example 2

[0026] like Figures 1-4 As shown, the present invention proposes a cold pressing device for fruit and vegetable juice. Compared with Embodiment 1, this embodiment further includes a plurality of connecting rods 18 arranged in a ring array at equal intervals near the edge of the lower surface of the juicing cylinder 5, and a retaining ring 17 connected to the end of the connecting rod 18. The pressing rod 12 passes through the retaining ring 17, and the upper surface of the retaining ring 17 is a conical slope, which guides the flow of fruit and vegetable residue flowing out from the extrusion gap 22. At the same time, a bearing is installed on the lower surface of the retaining ring 17, and the bearing is sleeved on the outer surface of the pressing rod 12, which improves the stability of the hollow shaft 2, the crushing column 9, the grinding cone 11 and the pressing rod 12 when rotating.

[0027] In this embodiment, the retaining ring 17 can block the fruit and vegetable residue flowing out from the extrusion gap 22, so as to prevent the fruit and vegetable residue from adhering to the water inlet pipe 6.

[0028] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A cold pressing device for fruit and vegetable juice, comprising a crushing and grinding cylinder (4) and a juicing cylinder (5), characterized in that: The lower surface of the crushing and grinding cylinder (4) is connected to a juicing cylinder (5). A hollow shaft (2) is installed on the upper surface of the crushing and grinding cylinder (4), and a crushing column (9) is connected to the bottom end of the hollow shaft (2). Several crushing blades (10) are evenly installed on the outer surface of the crushing column (9). A grinding cone (11) is connected to the bottom end of the crushing column (9). A conical grinding ring (15) is installed inside the crushing and grinding cylinder (4), and the grinding cone (11) passes through the conical grinding ring (15). A pressing rod (12) is connected to the bottom end of the cone (11). The pressing rod (12) has a pressing thread (13) on its outer surface. A juicing filter (16) is installed inside the juicing cylinder (5), and the pressing thread (13) is located inside the juicing filter (16). A squeezing cone (14) is sleeved on the outer surface of the pressing rod (12) below the pressing thread (13). The top end of the hollow shaft (2) and the bottom end of the pressing rod (12) are respectively connected to a water outlet pipe (1) and a water inlet pipe (6).

2. The cold pressing equipment for fruit and vegetable juice according to claim 1, characterized in that: A feed hopper (3) is installed on one side of the upper surface of the crushing and grinding cylinder (4), and a juice outlet pipe (19) is connected to the outer surface of the juicing cylinder (5) above the extrusion cone (14).

3. The cold pressing equipment for fruit and vegetable juice according to claim 1, characterized in that: A transmission box (7) is installed on the upper surface of the crushing and grinding cylinder (4), and a hollow shaft (2) passes through the transmission box (7). A transmission gear (20) is sleeved on the outer surface of the hollow shaft (2). A rotating motor (8) is installed on one side of the upper surface of the transmission box (7). A motor gear is connected to the end of the output shaft of the rotating motor (8). The motor gear and the transmission gear (20) are both located inside the transmission box (7), and the motor gear and the transmission gear (20) mesh with each other.

4. The cold pressing equipment for fruit and vegetable juice according to claim 1, characterized in that: A grinding gap (21) is formed between the outer surface of the grinding cone (11) and the inner wall of the conical grinding ring (15), and the width of the grinding gap (21) decreases from top to bottom.

5. The cold pressing equipment for fruit and vegetable juice according to claim 1, characterized in that: A squeezing gap (22) is formed between the outer surface of the squeezing cone (14) and the inner wall of the juicing cylinder (5), and the width of the squeezing gap (22) decreases from top to bottom.

6. The cold pressing equipment for fruit and vegetable juice according to claim 1, characterized in that: The lower surface of the juicing cylinder (5) is connected in a ring array with several connecting rods (18) at equal intervals near the edge, and the end of the connecting rod (18) is connected to a retaining ring (17), and the pressing rod (12) passes through the retaining ring (17).

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