Automatic pickling and stirring device for vegetables

Abstract

The utility model discloses an automatic vegetable pickling and stirring device which comprises a stirring barrel, a base and a stirring cover plate, and the stirring cover plate is controlled to be opened and closed through a driving air cylinder and is provided with an auxiliary material feeding assembly and a spraying assembly. The auxiliary material feeding assembly is linked with an air cylinder through a weighing device to achieve accurate feeding of solid auxiliary materials, and the spraying assembly adopts atomizing nozzles which are symmetrically distributed to ensure that liquid seasoning is evenly covered. A stirring rotating shaft is arranged in the center of the stirring barrel, spiral propelling blades and shovel-shaped turning blades with opposite rotating directions are coaxially mounted on the surface of the stirring rotating shaft, the screw pitch of the spiral blades is gradually changed to compress materials, and vegetable damage is reduced due to the bending design of the turning blades. Guide plates are arranged on the inner wall of the stirring barrel to enhance hedging mixing. The control module coordinates feeding, spraying and two-way stirring procedures, and automation of the whole process is achieved. The device solves the problems of non-uniform mixing and low efficiency of traditional pickling, and has the advantages of high mixing efficiency, accurate auxiliary material control and high automation degree.

Description

Technical Field

[0001] This utility model relates to the field of vegetable pickling technology, and in particular to an automatic vegetable pickling and stirring device. Background Technology

[0002] Pickling vegetables is a common process in food processing. Traditional pickling relies heavily on manual stirring to mix vegetables with salt, sugar, spices, and other ingredients. However, manual operation suffers from low efficiency, high labor intensity, and poor mixing uniformity. Furthermore, the spraying of liquid seasonings (such as soy sauce and vinegar) during pickling is difficult to control precisely, easily leading to localized over-saltiness or uneven flavor. Existing technologies use some mechanized stirring devices that achieve mixing through unidirectional rotating blades, but these devices still have the following drawbacks: 1. Insufficient mixing effect: Unidirectional stirring easily leads to material stratification or accumulation, with dead zones at the edges, resulting in uneven distribution of ingredients; 2. Inaccurate ingredient addition: Manual or simple mechanical addition makes it difficult to accurately control the amount of solid ingredients (such as salt and spices) according to the formula ratio; 3. Poor liquid spray coverage: Traditional spray pipes or single nozzles easily cause localized over-dispensing of liquid seasonings, resulting in insufficient penetration; 4. Low automation: The feeding, spraying, and stirring processes need to be operated step-by-step, making it impossible to achieve closed-loop control throughout the entire process, affecting pickling efficiency and consistency.

[0003] To address the aforementioned issues, there is an urgent need for a vegetable pickling equipment capable of precise ingredient feeding, uniform mixing, and automated control, in order to improve pickling quality and reduce labor costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an automatic vegetable pickling and stirring device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses an automatic vegetable pickling and mixing device, comprising a mixing tank and a base. The top of the mixing tank is provided with an openable and closable mixing cover plate, one end of which is hinged to the mixing tank. Its opening and closing are controlled by drive cylinders on both sides of the mixing tank. The mixing cover plate is provided with at least one auxiliary material feeding component and at least one spraying component. The auxiliary material feeding component includes a fixed frame, a weighing device, an auxiliary material container, and a drive device. The weighing device is fixed on the fixed frame and is used to weigh the material in the auxiliary material container. The drive device controls the opening and closing of the inlet and outlet of the auxiliary material container. The spraying component includes a liquid conveying pipeline and at least one spray head. The spray head is connected to an external liquid supply device through the liquid conveying pipeline. The mixing tank is provided with a mixing shaft at its center, which is driven by a drive motor. Its surface is provided with spiral propulsion blades distributed axially and material turning blades distributed radially. The rotation direction of the spiral propulsion blades is opposite to that of the material turning blades.

[0007] As a preferred technical solution of this utility model, the driving device includes an inlet cylinder and an outlet cylinder. The inlet cylinder controls the opening and closing of the feed port of the auxiliary material container. The piston rod of the outlet cylinder is connected to a push plate. The push plate is hinged to the discharge port through a connecting rod and is used to seal or open the discharge port.

[0008] As a preferred technical solution of this utility model, the push plate has a semi-circular structure, the curvature of which matches the circular cross-section of the discharge port, and the hinge point between the connecting rod and the push plate is offset from the center of the push plate, forming an eccentric motion trajectory.

[0009] As a preferred technical solution of this utility model, the material turning blade has a shovel-shaped structure, and its end is bent in the direction of rotation of the stirring shaft, with a bending angle of 30°~60°.

[0010] As a preferred technical solution of this utility model, the pitch of the spiral propulsion blades gradually decreases from the feed end to the discharge end of the stirring shaft, forming a progressive compression structure.

[0011] As a preferred embodiment of this utility model, the spray head is an atomizing nozzle, and multiple spray heads are symmetrically and evenly distributed along the center of the stirring cover plate.

[0012] As a preferred technical solution of this utility model, it also includes a control module, which is connected to the weighing device, the driving device, the spraying assembly and the drive motor, and automatically executes the feeding, spraying and stirring procedures according to the preset formula.

[0013] As a preferred technical solution of this utility model, the inner wall of the mixing tank is provided with at least two sets of guide plates. The inclination direction of the guide plates is opposite to the rotation direction of the spiral propulsion blades, and the end of the guide plates extends into the radial coverage area of ​​the turning blades.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. High-efficiency and uniform mixing: The spiral propulsion blades and the material-turning blades on the mixing shaft are designed to rotate in opposite directions. The spiral blades push the material to flow axially, while the material-turning blades throw the material in the opposite direction to form radial motion. Combined with the reverse flow guidance effect of the guide plate inside the mixing tank, three-dimensional mixing is achieved, completely eliminating mixing dead corners and improving mixing uniformity. The shovel-shaped structure and the curved end design of the material-turning blades reduce mechanical damage to vegetables, while increasing the material throwing range and avoiding stratification.

[0016] 2. Precise auxiliary material control: The auxiliary material feeding component monitors the weight of the auxiliary materials in real time through a weighing device. Combined with the linkage control of the inlet cylinder and the outlet cylinder, it realizes automatic feeding and quantitative dispensing of solid auxiliary materials. The error rate can be controlled within ±1%, ensuring the accuracy of the marinating formula. The eccentric sealing structure of the push plate ensures stable and reliable opening and closing of the outlet, avoiding clumping or blockage of auxiliary materials.

[0017] 3. Improved uniformity of liquid penetration: Atomizing nozzles are symmetrically distributed in the center of the mixing cover, and the spraying range covers the entire mixing tank. Liquid seasonings are evenly adhered to the surface of vegetables in the form of atomization. Combined with the tumbling action of bidirectional mixing, liquid penetration is accelerated, avoiding local over-wetting or dryness.

[0018] 4. The control module coordinates the feeding, spraying and stirring procedures according to the preset formula, and automatically executes the feeding-premixing-deep stirring-discharging process, reducing manual intervention, ensuring the consistency of the pickling process, and improving production efficiency by more than 30%. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 This is the front view of this utility model;

[0023] Figure 4 This is a schematic diagram of the auxiliary material feeding component in this utility model;

[0024] In the diagram: 1. Mixing tank; 2. Base; 3. Auxiliary material feeding assembly; 4. Spray assembly; 5. Drive motor; 6. Control module; 11. Mixing cover plate; 12. Drive cylinder; 13. Mixing shaft; 14. Spiral propulsion blade; 15. Turning blade; 16. Guide plate; 31. Fixing frame; 32. Weighing device; 33. Auxiliary material container; 34. Feed inlet; 35. Inlet cylinder; 36. Discharge port; 37. Outlet cylinder; 38. Push plate; 39. Connecting rod; 41. Spray head; 42. Liquid conveying pipeline. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] In the attached diagram, all identical reference numerals refer to the same components.

[0027] like Figure 1-4 As shown, this utility model provides an automatic vegetable pickling and stirring device, the specific structure and working method of which are as follows: The device includes a stirring tank 1 and a base 2 fixed to the ground. The bottom of the stirring tank 1 is rigidly connected to the base 2 by bolts. The top of the stirring tank 1 is provided with an openable and closable stirring cover 11. One end of the stirring cover 11 is hinged to the top edge of the stirring tank 1 by a hinge. Its opening and closing action is controlled by drive cylinders 12 symmetrically installed on both sides of the stirring tank 1. The piston rod end of the drive cylinder 12 is connected to the side wall of the stirring cover 11 by a pin. The stirring cover 11 can be rotated from 0° to 90° by the extension and retraction of the cylinder. When the stirring cover 11 is closed, it is sealed and fitted to the top of the stirring tank 1 to prevent the material from overflowing during the pickling process.

[0028] A stirring shaft 13 is vertically positioned at the center of the mixing tank 1. The upper end of the stirring shaft 13 passes through the mixing cover plate 11 and is connected to the output shaft of the drive motor 5 via a coupling. The drive motor 5 is fixed to the outer surface of the mixing cover plate 11. Two sets of stirring units are provided on the surface of the stirring shaft 13: a spiral propulsion blade 14, extending spirally along the axial direction of the stirring shaft 13, with its root welded to the stirring shaft 13. Its pitch gradually decreases from the feed end (upper end) to the discharge end (lower end) of the stirring shaft 13, forming a progressive compression structure used to push the material downwards and gradually compact it; and a tilting blade 15, a shovel-shaped metal plate evenly welded radially along the stirring shaft 13, with its tip bent at 45° in the direction of rotation of the stirring shaft 13, used to throw the material from the tank wall towards the center during rotation. The spiral propulsion blade 14 and the tilting blade 15 rotate in opposite directions. The drive motor 5 controls the forward and reverse rotation cycle via a frequency converter to achieve bidirectional alternating stirring.

[0029] At least one auxiliary material feeding component 3 is installed on the mixing cover plate 11, which includes: a fixing frame 31: an L-shaped metal bracket, the bottom of which is fixed to the surface of the mixing cover plate 11 by bolts;

[0030] Weighing device 32: a high-precision electronic scale, installed on the horizontal plate surface of the fixed frame 31;

[0031] Auxiliary material container 33: It is an inverted cone-shaped stainless steel hopper, suspended below the weighing device 32, with a circular inlet 34 at the top and a circular outlet 36 at the bottom;

[0032] Inlet cylinder 35: Installed on the top of auxiliary material container 33, the piston rod end of which is connected to the sealing cover of inlet 34, used to control the opening and closing of inlet 34;

[0033] Outlet cylinder 37: Installed at the bottom of auxiliary material container 33, its piston rod end is connected to push plate 38 via a pin. Push plate 38 is a semi-circular stainless steel plate, hinged to the sealing ring of outlet 36 via connecting rod 39; the hinge point of connecting rod 39 is offset from the center of push plate 38 by 5mm, forming an eccentric sealing structure. Inlet cylinder 35 opens inlet 34 to replenish auxiliary material, and inlet 34 is closed after weighing device 32 reaches the preset value; outlet cylinder 37 pushes push plate 38 to rotate, and outlet 36 is opened through the eccentric movement of connecting rod 39, and auxiliary material falls into mixing tank 1.

[0034] The mixing cover plate 11 is provided with at least one spray assembly 4, including: a spray head 41: a stainless steel atomizing nozzle, which is fixed to the lower surface of the mixing cover plate 11 by a threaded connection; a liquid conveying pipeline 42: a corrosion-resistant hose, one end of which is connected to the spray head 41 and the other end of which is connected to an external liquid storage tank; multiple spray heads 41 are symmetrically distributed in a ring around the mixing shaft 13 to ensure that the liquid is evenly covered inside the mixing tank 1 after atomization.

[0035] Control module 6 is a PLC controller, installed in the control box on the side of base 2. Its signal input terminal is connected to the weighing device 32 via cable, and its signal output terminal is connected to the solenoid valves of drive cylinder 12, inlet cylinder 35, outlet cylinder 37, drive motor 5, and spray assembly 4 via cable. Control module 6 automatically executes the following process according to a preset program:

[0036] Open the inlet cylinder 35 to add auxiliary materials, and close the inlet 34 after the weight reaches the standard.

[0037] The outlet cylinder 37 is activated to dispense a quantitative amount of material, while the spray assembly 4 sprays liquid seasoning.

[0038] The drive motor 5 starts and controls the spiral propulsion blade 14 and the material turning blade 15 to alternately rotate forward and backward to complete the pickling and stirring.

[0039] At least two sets of guide plates 16 are welded to the inner wall of the mixing tank 1. The guide plates 16 are long strip stainless steel plates with an inclination direction opposite to the rotation direction of the spiral propulsion blades 14, and their ends extend into the rotation trajectory range of the material turning blades 15. The guide plates 16 are used to change the flow direction of the material and counteract the spiral propulsion blades 14 to improve the uniformity of mixing.

[0040] The method of using this utility model is as follows:

[0041] 1. Feeding stage: After the vegetables are loaded into the mixing tank 1, the control module 6 starts the auxiliary material feeding component 3 and the spraying component 4, and adds solid auxiliary materials and sprays liquid seasonings according to the formula ratio.

[0042] 2. Premixing stage: The drive motor 5 rotates forward at low speed, the spiral propulsion blade 14 pushes the material downward, the turning blade 15 rotates in the opposite direction to scatter the material, and the guide plate 16 guides the edge material to flow back.

[0043] 3. Deep mixing stage: The drive motor 5 switches between high-speed forward and reverse rotation, and the spiral propulsion blade 14 and the material turning blade 15 alternately compress and throw the material until it is evenly mixed;

[0044] 4. Discharge stage: The mixing cover plate 11 is opened, and the drive motor 5 reverses to drive the spiral propulsion blades 14 to push the material upward for discharge.

[0045] This utility model is an automatic vegetable pickling and stirring device, which realizes efficient, precise and automated vegetable pickling processing.

[0046] 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. An automatic vegetable pickling and stirring device, comprising a stirring tank (1) and a base (2), characterized in that: The mixing tank (1) is provided with an openable mixing cover plate (11) at the top. One end of the mixing cover plate (11) is hinged to the mixing tank (1), and its opening and closing is controlled by the drive cylinders (12) on both sides of the mixing tank (1). The mixing cover plate (11) is provided with at least one auxiliary material feeding component (3) and at least one spraying component (4). The auxiliary material feeding component (3) includes a fixed frame (31), a weighing device (32), an auxiliary material container (33), and a driving device. The weighing device (32) is fixed on the fixed frame (31) and is used to weigh the material in the auxiliary material container (33). The driving device controls the auxiliary material feeding. The inlet (34) and outlet (36) of the container (33) are open and closed; the spray assembly (4) includes a liquid conveying pipeline (42) and at least one spray head (41), the spray head (41) is connected to an external liquid supply device through the liquid conveying pipeline (42); the stirring tank (1) is provided with a stirring shaft (13) at its center, the stirring shaft (13) is driven by a drive motor (5), and its surface is provided with spiral propulsion blades (14) distributed along the axial direction and material turning blades (15) distributed along the radial direction, the rotation direction of the spiral propulsion blades (14) is opposite to the rotation direction of the material turning blades (15).

2. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, The drive device includes an inlet cylinder (35) and an outlet cylinder (37). The inlet cylinder (35) controls the opening and closing of the feed port (34) of the auxiliary material container (33). The piston rod of the outlet cylinder (37) is connected to a push plate (38). The push plate (38) is hinged to the discharge port (36) through a connecting rod (39) for sealing or opening the discharge port (36).

3. The automatic vegetable pickling and stirring device according to claim 2, characterized in that, The push plate (38) has a semi-circular structure, and its curvature matches the circular cross-section of the discharge port (36). The hinge point between the connecting rod (39) and the push plate (38) is offset from the center of the push plate (38), forming an eccentric motion trajectory.

4. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, The material turning blade (15) has a shovel-shaped structure, and its end is bent in the direction of rotation of the stirring shaft (13) with a bending angle of 30°~60°.

5. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, The pitch of the spiral propulsion blade (14) gradually decreases from the feed end to the discharge end of the stirring shaft (13), forming a progressive compression structure.

6. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, The spray head (41) is an atomizing nozzle, and multiple spray heads (41) are symmetrically and evenly distributed along the center of the stirring cover plate (11).

7. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, It also includes a control module (6), which is connected to the weighing device (32), the driving device, the spraying assembly (4) and the drive motor (5) by signal connection, and automatically executes the feeding, spraying and stirring procedures according to the preset formula.

8. The automatic vegetable pickling and stirring device according to claim 1, characterized in that, The inner wall of the mixing tank (1) is provided with at least two sets of guide plates (16). The inclination direction of the guide plates (16) is opposite to the rotation direction of the spiral propulsion blades (14), and the end of the guide plates (16) extends into the radial coverage area of ​​the turning blades (15).

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