Drying and powdering device for pastry premixed flour

Abstract

The utility model belongs to the technical field of premixed flour drying, and particularly relates to a pastry premixed flour drying and pulverizing device which comprises a supporting frame, a tank body is installed in the supporting frame, an annular groove is formed in the tank body, a plurality of heating pipes are arranged in the annular groove at equal intervals, and the heating pipes are arranged in the annular groove. A hollow rotating rod is rotatably mounted in the tank body, a plurality of hollow stirring rods are connected to the hollow rotating rod, and a plurality of air holes are formed in each hollow stirring rod; when premixed flour is dried, aggregate of the premixed flour can be broken through the rotary motion of the hollow stirring rod, particles are fully dispersed, local overheating or insufficient heating is avoided, the premixed flour is uniformly heated, the drying effect is improved, meanwhile, the premixed flour particles are suspended and dispersed through hot gas sprayed out of the air holes, and the drying effect is improved. The contact area of the particle surface and hot gas is remarkably increased, water evaporation is accelerated, the drying time is remarkably shortened, and the drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of premixed powder drying technology, specifically a premixed powder drying and powder making device for pastries. Background Technology

[0002] Premixed pastry powder is a scientifically formulated compound baking ingredient that typically contains various components such as flour, powdered sugar, emulsifiers, and leavening agents. Some of these components, such as powdered sugar and emulsifiers, are prone to absorbing moisture and clumping. Drying can significantly reduce the moisture content of the premixed powder, thereby minimizing the risk of quality deterioration due to moisture and extending the product's shelf life.

[0003] Existing premixed pastry drying equipment consists of a drying tank and a heating tube, which are directly embedded in the tank's jacket or interior. When drying the premixed powder, the premixed powder is first fed into the drying tank through the feed hopper, and then heated by electricity through the heating tube. This process heats and dries the premixed powder in the mixing tank, thereby reducing the moisture content of the premixed powder and extending its shelf life.

[0004] Existing premixed pastry drying devices cannot ensure uniform heating and thorough drying of the premixed powder, thus affecting the drying effect. Therefore, a premixed pastry drying and powder preparation device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a pastry premix powder drying and powder making device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A premixed pastry powder drying and powdering device of this utility model includes a support frame, a tank installed inside the support frame, an annular groove inside the tank, and multiple heating tubes arranged equidistantly within the annular groove. A hollow rotating rod is rotatably installed inside the tank, and multiple hollow stirring rods are connected to the hollow rotating rod. Each hollow stirring rod has multiple air vents. A gas supply pipe is connected inside the annular groove, and the other end of the gas supply pipe is rotatably connected to the top port of the hollow rotating rod through a bearing sleeve. An exhaust fan is connected to the gas supply pipe, and the exhaust fan is connected to the tank. A support base is fixed between the top and sides. A driven gear is fitted at the top of the hollow rotating rod. A first motor is installed on the top side of the tank. A driving gear is installed at the output end of the first motor, and the driving gear and the driven gear mesh with each other. When drying the premixed powder, the rotation of the hollow stirring rod can break up the agglomerates of the premixed powder, so that the particles are fully dispersed, avoiding local overheating or underheating, and making the premixed powder heat evenly, thus improving the drying effect. At the same time, the hot gas sprayed through the vent holes suspends and disperses the premixed powder particles, significantly increasing the contact area between the particle surface and the hot gas, accelerating moisture evaporation, significantly shortening the drying time, and improving the drying efficiency.

[0007] Preferably, the upper end of the hollow rotating rod is fixedly connected to two support rods, and the support rods and the bottom end of the hollow rotating rod are fixedly connected to scrapers. The scrapers are in contact with the inner wall of the tank. During the drying process, the rotation of the scrapers can scrape off the flour adhering to the inner wall of the tank, which can not only scrape and clean the inner wall of the tank, but also avoid the phenomenon of sticking to the wall.

[0008] Preferably, two support plates are fixed to the top side of the tank, and a cylinder is installed on the top of the two support plates. A feed hopper is connected to the top of the circumferential surface of the cylinder. A second motor is installed at one end of the cylinder, and a rotating shaft is connected to the output end of the second motor. A spiral crushing blade is fixed on the outer surface of the rotating shaft. A feeding pipe is connected to the bottom of the circumferential surface of the cylinder, and the other end of the feeding pipe is connected to the tank. When feeding the premixed powder, the premixed powder can be crushed. Through pre-crushing, the agglomerated structure in the premixed powder can be destroyed, making the particles looser and effectively reducing the occurrence of agglomeration. This ensures that the premixed powder maintains good dispersibility and flowability during drying, and helps to achieve uniform heating during the drying process.

[0009] Preferably, the bottom port of the tank is connected to a discharge pipe, and a one-way valve is installed on the discharge pipe. When using the device, opening the one-way valve allows the dried premixed powder to be discharged through the discharge pipe.

[0010] The advantages of this utility model are:

[0011] 1. When drying premixed powder, the present invention breaks up the agglomerates of premixed powder through the rotation of the hollow stirring rod, so that the particles are fully dispersed, avoiding local overheating or underheating, and making the premixed powder heat evenly, thus improving the drying effect. At the same time, the hot gas sprayed through the vent holes suspends and disperses the premixed powder particles, significantly increasing the contact area between the particle surface and the hot gas, accelerating the evaporation of moisture, significantly shortening the drying time, and improving the drying efficiency.

[0012] 2. When feeding the premixed powder, this utility model can crush the premixed powder. By crushing it beforehand, the agglomerated structure in the premixed powder can be destroyed, making the particles looser and effectively reducing the occurrence of clumping. This ensures that the premixed powder maintains good dispersibility and flowability during drying, and helps to achieve uniform heating during the drying process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device;

[0015] Figure 2 This is a schematic diagram showing the overall planar structure of the device;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the tank.

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the crushing mechanism;

[0018] In the diagram: 1. Support frame; 2. Tank body; 3. Annular groove; 4. Heating tube; 5. Hollow rotating rod; 6. Hollow stirring rod; 7. Vent hole; 8. First motor; 9. Drive gear; 10. Driven gear; 11. Bearing sleeve; 12. Air supply pipe; 13. Exhaust fan; 14. Support base; 15. Support rod; 16. Scraper; 17. Support plate; 18. Cylinder body; 19. Second motor; 20. Rotating shaft; 21. Spiral crusher blade; 22. Feeding pipe; 23. Feed hopper; 24. Discharge pipe. Detailed Implementation

[0019] 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 scope of protection of the present utility model.

[0020] Please see Figure 1-3 As shown, a premixed pastry powder drying and powdering device includes a support frame 1, a tank 2 installed inside the support frame 1, an annular groove 3 inside the tank 2, and multiple heating tubes 4 arranged equidistantly within the annular groove 3. A hollow rotating rod 5 is rotatably mounted inside the tank 2, and multiple hollow stirring rods 6 are connected to the hollow rotating rod 5. Each hollow stirring rod 6 has multiple vent holes 7. An air supply pipe 12 is connected inside the annular groove 3, and the other end of the air supply pipe 12 is rotatably connected to the air supply pipe 12 via a bearing sleeve 11. Inside the top port of the hollow rotating rod 5, an exhaust fan 13 is connected to the air supply pipe 12. A support base 14 is fixed between the exhaust fan 13 and the top side of the tank body 2. A driven gear 10 is fitted onto the top of the hollow rotating rod 5. A first motor 8 is installed on the top side of the tank body 2. A driving gear 9 is installed at the output end of the first motor 8, and the driving gear 9 meshes with the driven gear 10. A discharge pipe 24 is connected to the bottom port of the tank body 2, and a one-way valve is installed on the discharge pipe 24. During operation, when drying the premixed powder, the premixed powder is fed into the tank. Inside the tank 2, the premixed powder is heated by the heating tube 4, thereby heating and drying the premixed powder inside the tank 2. At the same time, the first motor 8 is started, causing the drive gear 9 to rotate, which in turn forces the driven gear 10 to drive the hollow stirring rod 6 and the scraper 16 to rotate. The rotation of the hollow stirring rod 6 breaks up the agglomerates of the premixed powder, making the particles fully dispersed, avoiding local overheating or underheating, and ensuring that the premixed powder is heated evenly. At the same time, the exhaust fan 13 operates, allowing the hot gas in the annular groove 3 to be introduced into the hollow rotating rod 5 through the air supply pipe 12, then into the hollow stirring rod 6, and finally sprayed out through the vent hole 7. The airflow sprayed out of the vent hole 7 suspends and disperses the premixed powder particles, significantly increasing the contact area between the particle surface and the hot gas, accelerating the migration of moisture for drying. Through the synergistic effect of the rotation and stirring of the hollow stirring rod 6 and the hot air jet, not only can the premixed powder be heated and dried evenly, improving the drying effect, but the air jet through the vent hole 7 can also directly act on the particle surface, accelerating the evaporation of moisture, significantly shortening the drying time, and improving the drying efficiency.

[0021] Two support rods 15 are fixedly connected to the upper end of the hollow rotating rod 5. The support rods 15 and the bottom end of the hollow rotating rod 5 are fitted with scrapers 16, and the scrapers 16 are in contact with the inner wall of the tank 2. During operation, in the drying process, the hollow rotating rod 5 drives the scrapers 16 to rotate. Through the rotation of the scrapers 16, the flour adhering to the inner wall of the tank 2 can be scraped off. This not only cleans the inner wall of the tank 2, but also prevents the phenomenon of sticking to the wall.

[0022] Please see Figure 2 and Figure 4 As shown, two support plates 17 are fixed to the top side of the tank 2. A cylinder 18 is installed on the top of the two support plates 17. A feed hopper 23 is connected to the top of the circumferential surface of the cylinder 18. A second motor 19 is installed at one end of the cylinder 18. A rotating shaft 20 is connected to the output end of the second motor 19. Spiral crushing blades 21 are fixed on the outer surface of the rotating shaft 20. A feeding pipe 22 is connected to the bottom of the circumferential surface of the cylinder 18, and the other end of the feeding pipe 22 is connected to the tank 2. During operation, when the premixed powder is fed, the second motor 19 operates, causing the rotating shaft 20 to drive the spiral crushing blades 21 to rotate, thereby crushing the premixed powder. Through pre-crushing, the agglomerated structure in the premixed powder can be destroyed, making the particles looser and effectively reducing the occurrence of agglomeration. This ensures that the premixed powder maintains good dispersibility and flowability during drying, and helps to achieve uniform heating during the drying process.

[0023] Working Principle: Existing premixed pastry drying devices cannot ensure uniform heating and thorough drying of the premixed powder, thus affecting the drying effect. Therefore, a premixed pastry drying and powder preparation device is proposed to address these issues. When the premixed powder is fed in, the second motor 19 operates, causing the rotating shaft 20 to drive the spiral crushing blades 21 to rotate, thereby crushing the premixed powder. This pre-crushing process breaks down the agglomerated structure in the premixed powder, making the particles more loose and effectively reducing the occurrence of clumping. This ensures that the premixed powder maintains good dispersibility and flowability during drying, which helps to achieve uniform heating during the drying process.

[0024] The crushed premixed powder enters the tank 2 through the feeding pipe 22. During the drying process, the premixed powder is fed into the tank 2 and heated by the heating pipe 4. Simultaneously, the first motor 8 is started, causing the drive gear 9 to rotate, which in turn forces the driven gear 10 to rotate the hollow stirring rod 6 and the scraper 16. The rotation of the hollow stirring rod 6 breaks up agglomerates of the premixed powder, ensuring thorough particle dispersion and preventing localized overheating or underheating, thus achieving uniform heating. Simultaneously, the exhaust fan 13 operates to... The hot gas in the annular groove 3 is introduced into the hollow rotating rod 5 through the gas supply pipe 12, then flows into the hollow stirring rod 6, and finally is ejected through the vent hole 7. The airflow ejected from the vent hole 7 suspends and disperses the premixed powder particles, significantly increasing the contact area between the particle surface and the hot gas, accelerating moisture migration and drying. Through the synergistic effect of the rotation and stirring of the hollow stirring rod 6 and the hot air jet, not only can the premixed powder be heated and dried evenly, improving the drying effect, but it can also be directly applied to the particle surface through the vent hole 7, accelerating moisture evaporation, significantly shortening the drying time, and improving the drying efficiency.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A premixed pastry powder drying and powdering device, characterized in that: The device includes a support frame (1), a tank (2) installed inside the support frame (1), an annular groove (3) inside the tank (2), multiple heating tubes (4) arranged in the annular groove (3) and equidistant from each other, a hollow rotating rod (5) rotatably installed inside the tank (2), multiple hollow stirring rods (6) connected to the hollow rotating rod (5), multiple vent holes (7) on each hollow stirring rod (6), and a gas supply pipe (12) connected inside the annular groove (3). The other end is rotatably connected to the top port of the hollow rotating rod (5) through a bearing sleeve (11). A blower (13) is connected to the gas pipe (12). A support seat (14) is fixed between the blower (13) and the top side of the tank (2). A driven gear (10) is fitted on the top of the hollow rotating rod (5). A first motor (8) is installed on the top side of the tank (2). A driving gear (9) is installed at the output end of the first motor (8), and the driving gear (9) meshes with the driven gear (10).

2. The premixed pastry powder drying and powdering device according to claim 1, characterized in that: The upper end of the hollow rotating rod (5) is fixed with two support rods (15), and the support rods (15) are fixed with scrapers (16) at the bottom end of the hollow rotating rod (5), and the scrapers (16) are in contact with the inner wall of the tank (2).

3. The premixed pastry powder drying and powdering device according to claim 1, characterized in that: Two support plates (17) are fixed to the top side of the tank (2), and a cylinder (18) is installed at the top of the two support plates (17). A feed hopper (23) is connected to the top of the circumferential surface of the cylinder (18).

4. The premixed pastry powder drying and powdering device according to claim 3, characterized in that: A second motor (19) is installed at one end of the cylinder (18), and the output end of the second motor (19) is connected to a rotating shaft (20). A spiral crushing blade (21) is fixed on the outer surface of the rotating shaft (20).

5. The premixed pastry powder drying and powdering device according to claim 3, characterized in that: The bottom of the circumferential surface of the cylinder (18) is connected to a feeding pipe (22), and the other end of the feeding pipe (22) is connected to the tank (2).

6. The premixed pastry powder drying and powdering device according to claim 1, characterized in that: The bottom port of the tank (2) is connected to a discharge pipe (24), and a one-way valve is installed on the discharge pipe (24).

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