A spiral double-circulation stirring device with self-cleaning function

Abstract

This utility model relates to the field of mixing technology and discloses a spiral double-circulation mixing device with self-cleaning function. It includes a mixer, with an inlet pipe fixedly connected to the top and an outlet pipe fixedly connected to the bottom. A mixing assembly and a telescopic assembly are installed inside the mixer. The mixing assembly includes a mixing shaft, the outer wall of which is located inside the mixer. The mixing shaft has a hollow structure and a cleaning through-hole is provided inside. Spiral mixing blades are fixedly connected to the outer wall of the mixing shaft. In this utility model, the spiral mixing blades mix the material inside the mixer. During subsequent cleaning, an ultrasonic vibrator drives the spiral mixing blades to vibrate, avoiding the blind spots that exist in traditional mixing blades when mixing the inside of the mixing device. Simultaneously, the material easily adheres to the outer wall of the mixing components, thereby enhancing the material mixing effect and improving cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stirring technology, and in particular to a spiral double-circulation stirring device with self-cleaning function. Background Technology

[0002] In the food industry, coffee mixing tanks are key equipment in the coffee production chain. They play an important role in uniformly mixing various raw materials such as coffee powder, sugar, creamer, and flavorings. The mixing tanks need to fully mix coffee extract, concentrate, and other auxiliary materials to ensure the consistent taste of the final product. During the cooling stage after coffee bean roasting, the mixing tanks are also used to add flavoring substances so that the coffee beans can evenly absorb flavor components.

[0003] In the existing technology, the mechanical structure and technical principle of coffee raw material mixing tanks are designed based on the basic needs of material mixing. They mainly consist of a tank body, a mixing device, a drive system, and a control system. The mixing device mostly adopts a fixed-installed mixing shaft and mixing blades. Common blade types include anchor type, paddle type, turbine type, etc. The technical principle is to use the shear force, thrust, and circulating flow generated by the rotation of the blades to make the material in the tank move axially and radially, thereby achieving mixing.

[0004] However, existing mixing tanks are prone to creating mixing blind spots during the mixing process, resulting in uneven mixing of materials. Due to the complex composition of coffee raw materials, different raw materials have significant differences in density and particle size. For example, coffee powder is light, non-dairy creamer particles are fine, and sugar particles are relatively large. In addition, the structural design of the mixing blades has limitations, making it difficult for the materials in the tank to be fully stirred, forming mixing blind spots. At the same time, after mixing, a large amount of coffee raw materials will adhere to the surface of the mixing blades and the inner wall of the tank. If these adhered materials are not cleaned in time, they will oxidize and clump over time, which will not only affect the mixing quality of the next batch of materials, but also cause cross-contamination between the residue and the new raw materials, resulting in product taste deviation. This increases the difficulty of manual cleaning and equipment maintenance costs, and may even affect the production schedule due to incomplete cleaning. Therefore, a spiral double circulation mixing device with self-cleaning function is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a spiral double-circulation stirring device with self-cleaning function, which aims to improve the problems of blind spots in the stirring of the internal stirring device by traditional stirring blades in the prior art, and the easy adhesion of materials to the outer wall of the stirring component.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A self-cleaning spiral double-circulation mixing device includes a mixer, an inlet pipe fixedly connected to the top of the mixer, an outlet pipe fixedly connected to the bottom of the mixer, a mixing component inside the mixer, and a telescopic component inside the mixer. The stirring assembly includes a stirring shaft, the outer wall of which is disposed inside the mixer. The stirring shaft has a hollow structure and a cleaning through hole is provided inside the stirring shaft. A spiral stirring blade is fixedly connected to the outer wall of the stirring shaft, and multiple ultrasonic vibrators are fixedly connected to the bottom of the spiral stirring blade.

[0007] As a further description of the above technical solution: The telescopic assembly includes a rotating rod, the outer wall of which is disposed inside the mixer, and a slot is formed inside the rotating rod.

[0008] As a further description of the above technical solution: A motor is fixedly connected to the top of the mixer, and the output end of the motor is fixedly connected to the top of the rotating rod.

[0009] As a further description of the above technical solution: The inner wall of the stirring shaft is slidably connected to the outer wall of the rotating rod, and a fixing block is fixedly connected to the outer wall of the stirring shaft.

[0010] As a further description of the above technical solution: The fixing block has a locking block inside, and the outer wall of the locking block is slidably connected to the inner wall of the stirring shaft.

[0011] As a further description of the above technical solution: The outer wall of the card block is slidably connected to the inner wall of the card slot, and a connecting rod is fixedly connected to one end of the card block, and a pull rod is fixedly connected to one end of the connecting rod.

[0012] As a further description of the above technical solution: A spring is fitted on the outer wall of the connecting rod. One end of the spring is fixedly connected to the inner wall of the fixing block, and the other end of the spring is fixedly connected to the outer wall of the locking block.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the material inside the mixer is stirred by a spiral stirring blade. Then, during cleaning, the spiral stirring blade is driven to vibrate by an ultrasonic vibrator, which achieves the effect of uniform stirring of the raw materials inside the mixer and improves the cleaning efficiency. This avoids the blind spots in the stirring of the mixing device by traditional stirring blades, which leads to uneven mixing of materials. At the same time, after long-term operation of the mixing device, materials are easy to adhere to the outer wall of the stirring component. If they are not cleaned in time, they may deteriorate or solidify. This enhances the mixing effect of materials and improves the cleaning efficiency.

[0014] 2. In this utility model, the height of the spiral stirring blade is adjusted by moving the locking block out of the slot and then sliding the stirring shaft on the outer wall of the rotating rod. This avoids the problem of the traditional stirring rod having a fixed height, which cannot adjust the stirring depth according to changes in the amount and properties of the material. When the amount of material is small, the stirring blade with a fixed height can only contact the surface of the material, resulting in insufficient stirring of the bottom material. When the amount of material is large or the viscosity is high, the stirring blade will bear too much resistance due to excessive insertion, and may even cause jamming, overload and other malfunctions. This improves the uniformity and adaptability of material stirring. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a spiral double-circulation stirring device with self-cleaning function proposed in this utility model; Figure 2 This is a schematic diagram of the spiral stirring blade of a spiral double-circulation stirring device with self-cleaning function proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the rotating rod of a spiral double-circulation stirring device with self-cleaning function proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0016] Legend: 1. Mixer; 2. Feed pipe; 3. Discharge pipe; 4. Motor; 5. Mixing shaft; 6. Spiral mixing blade; 7. Cleaning through hole; 8. Ultrasonic vibrator; 9. Rotating rod; 10. Slot; 11. Fixing block; 12. Locking block; 13. Connecting rod; 14. Spring; 15. Pull rod. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-3 An embodiment of this utility model is provided: a spiral double circulation mixing device with self-cleaning function, including a mixer 1, a feed pipe 2 fixedly connected to the top of the mixer 1, a discharge pipe 3 fixedly connected to the bottom of the mixer 1, a mixing component inside the mixer 1, and a telescopic component inside the mixer 1. The mixing assembly includes a mixing shaft 5, the outer wall of which is located inside the mixer 1. The mixing shaft 5 has a hollow structure and a cleaning through hole 7 inside. The cleaning through hole 7 allows the cleaning medium to flow through and diffuse to the surface of the components around the mixing shaft 5, thus cleaning the mixing assembly. A spiral mixing blade 6 is fixedly connected to the outer wall of the mixing shaft 5. The spiral mixing blade 6 rotates under the drive of the mixing shaft 5, cutting and turning the material to achieve a thorough mixing effect. Multiple ultrasonic vibrators 8 are fixedly connected to the bottom of the spiral mixing blade 6. The ultrasonic vibrators 8 are used to generate high-frequency vibrations to shake off the material adhering to the spiral mixing blade 6 and the inner wall of the mixer 1, achieving a self-cleaning effect. This, combined with the cleaning through hole 7, enhances the cleaning effect.

[0019] Reference Figure 4 and Figure 5The telescopic assembly includes a rotating rod 9, the outer wall of which is located inside the mixer 1. A slot 10 is provided inside the rotating rod 9, which engages with a locking block 12 to restrict the relative rotation of the mixing shaft 5 and the rotating rod 9, thus enabling the rotating rod 9 to drive the mixing shaft 5 to rotate synchronously. A motor 4 is fixedly connected to the top of the mixer 1, providing power to rotate the rotating rod 9 and drive the telescopic assembly and the mixing assembly. The output end of the motor 4 is fixedly connected to the top of the rotating rod 9. The inner wall of the mixing shaft 5 is slidably connected to the outer wall of the rotating rod 9, allowing the mixing shaft 5 to slide up and down in conjunction with the rotating rod 9, thus adjusting the height of the mixing shaft 5. A fixing block 11 is fixedly connected to the outer wall of the mixing shaft 5, providing support for components such as the locking block 12 and the connecting rod 13, ensuring stable installation. The fixing block 11 contains a locking block 12, which engages and disengages with the slot 10. When the locking block 12 engages with the slot 10, the mixing assembly is activated. The synchronous rotation of the stirring shaft 5 and the rotating rod 9 allows for adjustment of the height of the stirring shaft 5 when the locking block 12 disengages from the locking groove 10, thus achieving flexible adjustment of the stirring shaft 5's state. The outer wall of the locking block 12 is slidably connected to the inner wall of the stirring shaft 5, and the outer wall of the locking block 12 is slidably connected to the inner wall of the locking groove 10. A connecting rod 13 is fixedly connected to one end of the locking block 12. The connecting rod 13 connects the locking block 12 and the pull rod 15, transmitting the pulling force of the pull rod 15 to achieve the effect of moving the locking block 12 with the pull rod 15. One end of the connecting rod 13 is fixedly connected to... There is a pull rod 15, which is pulled by the operator to drive the connecting rod 13 and the locking block 12 to move, thereby controlling the engagement state of the locking block 12 and the locking groove 10. A spring 14 is sleeved on the outer wall of the connecting rod 13. One end of the spring 14 is fixedly connected to the inner wall of the fixing block 11, and the other end of the spring 14 is fixedly connected to the outer wall of the locking block 12. When the pull rod 15 is not under force, the spring 14 pushes the locking block 12 into the locking groove 10, thereby achieving the effect of automatically resetting the locking block 12 and ensuring a stable connection between the stirring shaft 5 and the rotating rod 9.

[0020] Working principle: When mixing the raw materials inside the mixer 1, the motor 4 is started first, which drives the rotating rod 9 to rotate. Then, the rotation of the rotating rod 9 drives the mixing shaft 5 to rotate, which in turn drives the spiral mixing blade 6 to rotate. When cleaning the inside of the mixer 1, the ultrasonic vibrator 8 fixed below the spiral mixing blade 6 is started first. The vibration of the ultrasonic vibrator 8 shakes off the material adhering to the outer wall of the mixing shaft 5 and the spiral mixing blade 6. Then, the cleaning medium flows faster through the cleaning through hole 7, thereby improving the cleaning efficiency. This avoids the blind spots in the mixing of the mixing device that exist when the traditional mixing blades are used, which leads to uneven mixing of materials. At the same time, after long-term operation, materials are prone to adhere to the outer wall of the mixing components. If they are not cleaned in time, they may deteriorate or solidify.

[0021] When the height of the spiral stirring blade 6 needs to be adjusted, the operator first pulls the lever 15. Pulling the lever 15 causes the connecting rod 13 to slide on the inner wall of the fixed block 11. Then, the sliding of the connecting rod 13 causes the locking block 12 to slide on the inner wall of the stirring shaft 5. Subsequently, the sliding of the locking block 12 compresses the spring 14. Then, when the locking block 12 moves out of the slot 10, it releases the restriction on the stirring shaft 5. Then, the stirring shaft 5 is moved up and down for adjustment. When the adjustment is in the appropriate position, the lever 15 is released, and the spring... The rebound of 14 causes the locking block 12 to reset. Then, when the locking block 12 moves into the slot 10, it limits the stirring shaft 5, thus achieving the effect of adjusting the height of the spiral stirring blade 6. This avoids the problem that the height of the traditional stirring rod is fixed, and the stirring depth cannot be adjusted according to the changes in the amount and properties of the material. When the amount of material is small, the stirring blade with a fixed height can only contact the surface of the material, resulting in insufficient stirring of the bottom material. When the amount of material is large or the viscosity is high, the stirring blade will bear too much resistance due to excessive insertion, and may even cause jamming, overload and other malfunctions.

Claims

1. A spiral double-circulation stirring device with self-cleaning function, comprising a stirrer (1), characterized in that: The mixer (1) is fixedly connected to the top of the feed pipe (2), and the mixer (1) is fixedly connected to the bottom of the discharge pipe (3). The mixer (1) is equipped with a mixing component and a telescopic component. The stirring assembly includes a stirring shaft (5), the outer wall of which is located inside the mixer (1). The stirring shaft (5) has a hollow structure and a cleaning through hole (7) is provided inside the stirring shaft (5). A spiral stirring blade (6) is fixedly connected to the outer wall of the stirring shaft (5), and multiple ultrasonic vibrators (8) are fixedly connected to the bottom of the spiral stirring blade (6).

2. The spiral double-circulation stirring device with self-cleaning function according to claim 1, characterized in that: The telescopic assembly includes a rotating rod (9), the outer wall of which is disposed inside the mixer (1), and a slot (10) is provided inside the rotating rod (9).

3. The spiral double-circulation stirring device with self-cleaning function according to claim 2, characterized in that: The mixer (1) is fixedly connected to the top of a motor (4), and the output end of the motor (4) is fixedly connected to the top of the rotating rod (9).

4. The spiral double-circulation stirring device with self-cleaning function according to claim 3, characterized in that: The inner wall of the stirring shaft (5) is slidably connected to the outer wall of the rotating rod (9), and a fixing block (11) is fixedly connected to the outer wall of the stirring shaft (5).

5. The spiral double circulation stirring device with self-cleaning function according to claim 4, characterized in that: The fixing block (11) has a locking block (12) inside, and the outer wall of the locking block (12) is slidably connected to the inner wall of the stirring shaft (5).

6. The spiral double circulation stirring device with self-cleaning function according to claim 5, characterized in that: The outer wall of the card block (12) is slidably connected to the inner wall of the card slot (10), and a connecting rod (13) is fixedly connected to one end of the card block (12), and a pull rod (15) is fixedly connected to one end of the connecting rod (13).

7. The spiral double circulation stirring device with self-cleaning function according to claim 6, characterized in that: A spring (14) is fitted on the outer wall of the connecting rod (13). One end of the spring (14) is fixedly connected to the inner wall of the fixing block (11), and the other end of the spring (14) is fixedly connected to the outer wall of the card block (12).

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