A yeast drying device for drying yeast.

Abstract

This utility model relates to a yeast drying device for drying yeast, including a drying chamber. A set of parallel slide rails is provided on the bottom surface of the drying chamber, and a drying basket is slidably mounted on the slide rails. The drying basket is driven by a drive assembly to reciprocate along the slide rails. A drying tray is provided inside the drying basket, and the drying tray moves relative to the drying basket in the longitudinal direction. A sealing gasket on the upper circumference of the drying basket is fixedly connected to the drying chamber, dividing the interior of the drying chamber into a hot air zone and an exhaust zone. A hot air fan is located in the hot air zone of the drying chamber, and an exhaust fan is installed on the upper end of the chamber lid. The exhaust fan and the hot air fan are connected through a plate heat exchanger. This utility model drives the drying basket and drying chamber to move, causing the yeast placed in the drying chamber to continuously turn over, improving the uniformity of drying. Furthermore, dividing the drying chamber into a hot air zone and an exhaust zone ensures that the heat generated in the hot air zone is output to the exhaust zone through the vents in the drying basket and drying tray, reducing heat loss and improving drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of yeast processing technology, and in particular to a yeast drying device for yeast drying. Background Technology

[0002] Drying is a crucial step in the production of yeast starter. The degree of dryness directly affects its fermentation performance and shelf life. Currently, most existing yeast starter drying equipment uses a simple hot air circulation drying method, which suffers from uneven drying. Some yeast starters are over-dried, affecting their quality, while others are under-dried, making them prone to mold growth. During yeast starter production, to increase the uniformity of inoculation on the surface, the starters are generally made into spherical shapes. During drying, to preserve the activity of microorganisms and enzyme function within the starter, it is essential to maintain its spherical shape and the integrity of its internal structure. Dispersing the spherical starter may disrupt its internal microbial community structure and enzyme distribution, affecting the fermentation effect and the quality of the brewed wine. For example, utility model CN220062401U mentions a yeast drying device for yeast processing, including a machine body. A drying chamber is fixedly installed inside the machine body, and a heating plate is fixedly installed on the outer wall of the drying chamber. Two sets of feed inlets are fixedly installed on the upper surface of the machine body, with the other end of each feed inlet inserted into the drying chamber. An outlet is fixedly installed on the lower surface of the drying chamber, and a spiral block is spirally arranged inside the outlet. The baffle of this yeast drying device is arc-shaped, and under the drive of a first motor, the baffle forms a rotating structure with the drying chamber via a first rotating shaft. This arc-shaped baffle turns the yeast inside, ensuring uniform heating. The device has brushes attached to the inner wall of the baffle, and two sets of second rotating shafts, driven by a second motor, form a linkage structure via a drive gear, a driven gear, and a transmission belt. This prevents the yeast from clumping and avoids yeast residue on the baffle surface. During the drying process of this device, the yeast is scattered, which affects its activity. Therefore, it is necessary to develop a yeast drying device to address the above-mentioned shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a yeast drying device for drying yeast. By driving the drying basket and drying box through a drive component, the yeast placed in the drying box is constantly turned over, improving the uniformity of drying. Furthermore, the drying box is divided into a hot air zone and an exhaust zone, so that the heat generated in the hot air zone is output to the exhaust zone through the ventilation holes in the drying basket and drying tray, reducing heat loss and improving drying efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a yeast drying device for drying yeast, comprising a drying chamber with a lid on top, the lid being hinged to the drying chamber for rotational connection. A set of parallel slide rails is provided along the width direction on the bottom surface of the drying chamber, and a drying basket is slidably mounted on the slide rails. The drying basket is driven by a drive assembly to reciprocate along the slide rails. A drying tray for placing yeast is provided inside the drying basket, and the drying tray and the drying basket have a moving space in the length direction, allowing the drying tray to move relative to each other within the drying basket. A slot is provided on the inner wall of the drying chamber, and a sealing gasket on the upper periphery of the drying basket is fixedly connected to the slot, dividing the interior of the drying chamber into a hot air zone and an exhaust zone. A hot air blower is installed on one side of the drying chamber, with its inlet extending into the hot air zone. An exhaust fan is installed on the upper end of the lid, with its outlet located in the exhaust zone. The exhaust fan and the hot air blower are connected via a plate heat exchanger.

[0005] Preferably, the four lower corners of the drying basket are engaged with the slide rail by sliding components. The slide rail is provided with guide grooves adapted to the sliding components. Two sliding components on the same side are engaged in the same guide groove and slide along the length of the guide groove.

[0006] Preferably, the drive assembly includes a first connecting rod, a second connecting rod, and a motor; the first connecting rod is mounted on the outer wall of the drying basket and located on the inner side of the drying basket, and a fixed column is fixedly mounted on the outer wall of the drying basket near the middle, and the first connecting rod is rotatably connected to the fixed column; the other end of the first connecting rod is hinged to the second connecting rod, and the other end of the second connecting rod is fixedly mounted on a rotating shaft, the rotating shaft extending out of the drying basket and fixedly connected to the output shaft of the motor; the distance from the hinge point of the first connecting rod and the second connecting rod to the center of the rotating shaft is less than the length of the second connecting rod, so that the circular motion of the motor is converted into the reciprocating linear motion of the drying basket.

[0007] Preferably, a spring is installed between the drying basket and the drying box, and the spring is symmetrically installed at both ends of the drying basket; the distance between the two ends of the drying basket and the inner wall of the drying box is greater than the radius of the motion trajectory of the farthest rotation point in the drive assembly.

[0008] Preferably, the length of the drying tray extending into the drying basket is smaller than the internal space of the drying basket. A buffer distance is maintained between the bottom surface of the drying tray and the inner bottom surface of the drying basket to facilitate the passage of hot air. Four guide posts are evenly distributed along the length of the upper surface of the drying basket. The drying tray is placed on the drying basket via the guide posts. The upper end of the drying tray has a wing, and the wing has an elongated hole corresponding to the guide post. The drying tray is fitted onto the guide post through the elongated hole. Rollers are installed at the four corners of the wing. A sliding groove is provided at the upper end of the drying basket corresponding to the roller. The length of the sliding groove is less than the distance between the inner wall of the drying basket and the outer wall of the drying tray. The roller slides within the sliding groove. The sliding distance of the guide post within the elongated hole is the same as the sliding distance of the roller within the sliding groove. Several damping pads are evenly fixedly installed on both outer walls along the length of the drying tray.

[0009] Preferably, the bottom of both the drying basket and the drying tray is provided with several ventilation holes for hot air to pass through.

[0010] Preferably, the sealing gasket is a retractable structure and is made of a high-temperature resistant material.

[0011] Preferably, the air inlet of the hot air blower is provided with an air filter for filtering impurities and microorganisms in the air, and the air outlet of the exhaust blower is provided with an activated carbon filter for adsorbing odors and harmful gases in the exhaust air.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model relates to a yeast drying device for drying yeast. A drive assembly drives the drying frame to reciprocate along a slide rail, continuously turning the yeast during the drying process and improving drying uniformity. A spring installed between the drying frame and the drying chamber reduces the impact force generated during the reciprocating motion, acting as a buffer and shock absorber. This protects the various components of the drying device, extends its service life, and also makes the movement of the drying frame smoother, improving the drying effect. The sliding design of the drying tray and drying frame, combined with damping pads, prevents violent collisions that could break the yeast. A retractable sealing gasket divides the drying chamber into a hot air zone and an exhaust zone, ensuring that the heat generated in the hot air zone is discharged to the exhaust zone through vents in the drying basket and drying tray, reducing heat loss and improving drying efficiency. The hot air blower and exhaust fan are connected via a plate heat exchanger to recover waste heat from the exhaust, saving resources. Filters are installed at both the hot air blower inlet and the exhaust fan outlet, improving air cleanliness and reducing the risk of pollution. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of the yeast drying device for yeast drying according to this utility model; Figure 2 This is a top view schematic diagram of the yeast drying device for yeast drying according to this utility model; Figure 3 This is a schematic diagram of the internal three-dimensional structure of this practical drying oven; Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 for Figure 3 Schematic diagram of the structure at point B.

[0015] Explanation of reference numerals in the attached drawings: 1. Drying oven; 2. Oven cover; 3. Slide rail; 301. Guide groove; 4. Drying basket; 401. Slide groove; 402. Guide column; 5. Drive assembly; 501. First connecting rod; 502. Second connecting rod; 503. Motor; 504. Fixed column; 505. Rotating shaft; 6. Drying tray; 601. Wing; 602. Elongated hole; 603. Roller; 7. Sealing gasket; 8. Hot air blower; 9. Exhaust fan; 10. Plate heat exchanger; 11. Sliding component; 12. Spring; 13. Damping pad; 14. Vent hole. Detailed Implementation

[0016] The core of this utility model is to provide a yeast drying device for drying yeast. The device drives the drying basket and drying box to move through the driving component, so that the yeast placed in the drying box is constantly turned over, thereby improving the uniformity of drying. The drying box is divided into a hot air zone and an exhaust zone, so that the heat generated in the hot air zone is output to the exhaust zone through the ventilation holes in the drying basket and drying tray, thereby reducing heat loss and improving drying efficiency.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main cross-sectional structure of the yeast drying device for yeast drying according to this utility model; Figure 2 This is a top view schematic diagram of the yeast drying device for yeast drying according to this utility model; Figure 3 This is a schematic diagram of the internal three-dimensional structure of this practical drying oven; Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 for Figure 3 Schematic diagram of the structure at point B.

[0020] In one specific implementation, such as Figures 1-5 As shown, a yeast drying device for drying yeast includes a drying chamber 1, with a lid 2 on the top of the drying chamber 1. The lid 2 is rotatably connected to the drying chamber 1 via a hinge. The lid 2 is mounted on the top of the drying chamber 1 via the hinge to ensure smooth opening and closing.

[0021] In one specific implementation, such as Figures 1-5 As shown, a set of parallel slide rails 3 are provided along the width direction on the bottom surface of the drying chamber 1. A drying basket 4 is slidably mounted on the slide rails 3, and the drying basket 4 is driven by a drive assembly 5 to reciprocate along the slide rails 3. A drying tray 6 for placing yeast is provided inside the drying basket 4. The drying tray 6 and the drying basket 4 have a moving space in the length direction, allowing the drying tray 6 to move relative to each other within the drying basket 4. The four lower corners of the drying basket 4 are engaged with the slide rails 3 via sliding components 11. The slide rails 3 have guide grooves 301 adapted to the sliding components 11. Two sliding components 11 on the same side are engaged in the same guide groove 301 and slide along the length direction of the guide groove 301. The sliding components 11 are engaged in the outlet groove to prevent the sliding components 11 from shifting during movement within the slide rails 3. The sliding components 11 installed here can be pulleys, but are not limited to pulleys; any sliding component 11 installed in the guide groove 301 and sliding smoothly with the guide groove 301 is acceptable.

[0022] In one specific implementation, such as Figures 1-5 As shown, the drive assembly 5 includes a first connecting rod 501, a second connecting rod 502, and a motor 503. The first connecting rod 501 is installed on the outer wall of the drying basket 4 and located on the inner side of the drying basket 4. A fixed column 504 is fixedly installed on the outer wall of the drying basket 4 near the middle. The first connecting rod 501 is rotatably connected to the fixed column 504 through a bearing. The other end of the first connecting rod 501 is hinged to the second connecting rod 502. The other end of the second connecting rod 502 is fixedly installed on a rotating shaft 505. The rotating shaft 505 extends out of the drying chamber 1 and is fixedly connected to the output shaft of the motor 503. The distance from the hinge point of the first connecting rod 501 and the second connecting rod 502 to the center of the rotating shaft 505 is less than the length of the second connecting rod 502, so that the circular motion of the motor 503 is converted into the reciprocating linear motion of the drying basket 4.

[0023] In one specific implementation, such as Figures 1-5 As shown, a spring 12 is installed between the drying basket 4 and the drying chamber 1. The spring 12 is symmetrically installed at both ends of the drying basket 4 to buffer the reciprocating motion of the drying basket 4. The distance between the two ends of the drying basket 4 and the inner wall of the drying chamber 1 is greater than the radius of the movement trajectory of the farthest rotation point in the drive assembly 5, so that when the drying basket 4 reciprocates on the slide rail 3, the two ends maintain a suitable distance from the inner wall of the drying chamber 1.

[0024] In one specific implementation, such as Figures 1-5 As shown, the length dimension of the portion of the drying tray 6 that extends into the drying basket 4 is smaller than the internal space dimension of the drying basket 4, to ensure that the drying tray 6 does not interfere with the inner wall of the drying basket 4 during movement. Four guide posts 402 are evenly distributed along the length of the upper surface of the drying basket 4. The drying tray 6 is placed on the drying basket 4 via the guide posts 402. The upper end of the drying tray 6 is provided with a wing 601. The wing 601 has an elongated hole 602 corresponding to the guide post 402. The drying tray 6 is fitted onto the guide post 402 through the elongated hole 602. Rollers 603 are installed at the four corners of the wing 601. The upper end of the drying basket 4 corresponding to the roller 603 is provided with a sliding groove 401. The length of the sliding groove 401 is less than the distance between the inner wall of the drying basket 4 and the outer wall of the drying tray 6. The roller 603 slides in the sliding groove 401. The sliding distance of the guide post 402 in the elongated hole 602 is the same as the sliding distance of the roller 603 in the sliding groove 401. Several damping pads 13 are evenly fixed on the outer walls of both sides along the length of the drying tray 6 to ensure that the drying tray 6 moves smoothly in the drying basket 4. Handles are installed on both sides of the upper surface of the drying tray 6 for easy removal or placement of the drying tray 6.

[0025] In one specific implementation, such as Figures 1-5 As shown, the drying basket 4 has slots at both ends that connect to the inner wall of the drying chamber 1. The sealing gasket 7 on the upper periphery of the drying basket 4 is fixedly connected to these slots, dividing the interior of the drying chamber 1 into a hot air zone and an exhaust zone. The sealing gasket 7 is a retractable structure made of a high-temperature resistant material. This retractable structure allows the sealing gasket 7 to stretch or contract as the drying basket 4 moves back and forth, preventing hot air from escaping through the gap between the drying basket 4 and the drying chamber 1. This ensures that all heat generated in the hot air zone is discharged to the exhaust zone through the vents 14 in the drying basket 4 and drying tray 6, reducing heat loss and improving drying efficiency.

[0026] In one specific implementation, such as Figures 1-5As shown, both the drying basket 4 and the drying tray 6 have several ventilation holes 14 at their bottoms for hot air passage. The drying basket 4 has ventilation holes 14 with a diameter of 8-10 mm at its bottom, while the drying tray 6 has ventilation holes 14 with a diameter of 1-2 mm at its bottom. A buffer distance is provided between the bottom surface of the drying tray 6 and the inner bottom surface of the drying basket 4 to facilitate the passage of hot air. This buffer distance allows the hot air to pass through and dry the yeast that has accumulated in the drying tray 6, ensuring that the hot air passes evenly through the drying basket 4 and the drying tray 6 to dry the yeast.

[0027] In one specific implementation, such as Figures 1-5 As shown, in one specific embodiment, such as Figures 1-5 As shown, a hot air blower 8 is installed on one side of the drying chamber 1, with its air inlet extending into the hot air zone; an exhaust fan 9 is installed on the upper end of the chamber cover 2, with its outlet located in the exhaust zone. The exhaust fan 9 and the hot air blower 8 are connected via a plate heat exchanger 10. An air filter for filtering impurities and microorganisms from the air is installed at the air inlet of the hot air blower 8, and an activated carbon filter for adsorbing odors and harmful gases from the exhaust air is installed at the air outlet of the exhaust fan 9.

[0028] The operation process of this utility model's yeast drying device for drying yeast is as follows: The spherical yeast to be dried is placed on a drying tray 6, which is then placed inside a drying basket 4. The motor 503 is started, and its output shaft drives the rotating shaft 505 to rotate. The rotating shaft 505, through a second connecting rod 502, drives the first connecting rod 501 to move. Because the distance from the hinge point of the first connecting rod 501 and the second connecting rod 502 to the center of the rotating shaft 505 is less than the length of the second connecting rod 502, the drying basket 4 makes a reciprocating linear motion on the slide rail 3. Simultaneously, the drying tray 6, inside the drying basket 4, slides within the drying basket due to the basket's movement and its interaction with the guide column 402 and the elongated hole 602, causing the yeast to continuously change position. At the same time, the hot air fan 8 is started. Outside air, after being filtered for impurities and microorganisms by an air filter, enters the hot air zone through the air inlet. The hot air fan 8 heats the air, and the heated air is evenly blown onto the yeast through the vent holes 14 at the bottom of the drying basket 4 and the drying tray 6, removing moisture from the yeast. After hot air flows through the drying chamber 1, it carries moisture into the exhaust area. The exhaust fan 9 extracts the humid air, which is then filtered through an activated carbon filter to absorb odors and harmful gases before being discharged. The humid air in the exhaust area exchanges heat with the air intake of the hot air blower 8 through a plate heat exchanger 10, transferring heat to the intake air and achieving heat recovery. During the reciprocating motion of the drying basket 4, the compression springs 12 at both ends act as buffers and assist in resetting, reducing vibration and impact during movement. The damping pads 13 on both sides of the drying tray 6 limit the sliding range of the drying tray 6, preventing excessive sliding from generating a large impact force that could scatter the yeast inside the drying tray 6 and affect its quality. The entire drying process continues until the yeast reaches the required degree of dryness, thus completing the yeast drying operation.

[0029] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A yeast drying device for drying yeast, comprising a drying chamber (1), wherein the top of the drying chamber (1) is provided with a chamber lid (2), the chamber lid (2) being rotatably connected to the drying chamber (1) via a hinge, characterized in that: The bottom surface of the drying chamber (1) is provided with a set of parallel slide rails (3) along the width direction. A drying basket (4) is slidably mounted on the slide rails (3). The drying basket (4) is driven by a drive assembly (5) to reciprocate along the slide rails (3). A drying tray (6) for placing yeast is provided inside the drying basket (4). The drying tray (6) and the drying basket (4) have a moving space in the length direction so that the drying tray (6) can move relative to each other inside the drying basket (4). The drying chamber (1) contains... The wall is provided with a slot, and the sealing gasket (7) on the upper periphery of the drying basket (4) is fixedly connected to the slot, dividing the interior of the drying box (1) into a hot air zone and an exhaust zone; a hot air blower (8) is installed on one side of the drying box (1), and the air inlet of the hot air blower (8) extends into the hot air zone; an exhaust fan (9) is installed on the upper end of the box cover (2), and the air outlet of the exhaust fan (9) is located in the exhaust zone. The exhaust fan (9) and the hot air blower (8) are connected by a plate heat exchanger (10).

2. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The lower four corners of the drying basket (4) are connected to the slide rail (3) by sliding parts (11). The slide rail (3) is provided with guide grooves (301) that are adapted to the sliding parts (11). Two sliding parts (11) on the same side are fitted on the same guide groove (301) and slide along the length of the guide groove (301).

3. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The drive assembly (5) includes a first connecting rod (501), a second connecting rod (502), and a motor (503); the first connecting rod (501) is installed on the outer wall of the drying basket (4) and located on the inner side of the drying basket (4), and a fixed column (504) is fixedly installed on the outer wall of the drying basket (4) near the middle, and the first connecting rod (501) is rotatably connected to the fixed column (504); the other end of the first connecting rod (501) is hinged to the second connecting rod (502), and the other end of the second connecting rod (502) is fixedly installed on the rotating shaft (505), the rotating shaft (505) extends out of the drying box (1) and is fixedly connected to the output shaft of the motor (503); the distance from the hinge point of the first connecting rod (501) and the second connecting rod (502) to the center of the rotating shaft (505) is less than the length of the second connecting rod (502), so that the circular motion of the motor (503) is converted into the reciprocating linear motion of the drying basket (4).

4. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: A spring (12) is installed between the drying basket (4) and the drying box (1), and the spring (12) is symmetrically installed at both ends of the drying basket (4); the distance between the two ends of the drying basket (4) and the inner wall of the drying box (1) is greater than the radius of motion trajectory of the farthest rotation point in the drive assembly (5).

5. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The length of the portion of the drying tray (6) extending into the drying basket (4) is smaller than the internal space of the drying basket (4). A buffer distance is maintained between the bottom surface of the drying tray (6) and the inner bottom surface of the drying basket (4) to facilitate the passage of hot air. Four guide posts (402) are evenly distributed along the length of the upper surface of the drying basket (4). The drying tray (6) is placed on the drying basket (4) via the guide posts (402). The upper end of the drying tray (6) is provided with a wing (601). The wing (601) has a corresponding elongated hole (602) at the guide post (402). The drying tray (6) passes through the elongated hole (602). The guide post (402) is fitted onto the guide post (402). Rollers (603) are installed at the four corners of the wing (601). The upper end of the drying basket (4) corresponding to the roller (603) is provided with a sliding groove (401). The length of the sliding groove (401) is less than the distance between the inner wall of the drying basket (4) and the outer wall of the drying tray (6). The roller (603) slides in the sliding groove (401). The sliding distance of the guide post (402) in the long hole (602) is the same as the sliding distance of the roller (603) in the sliding groove (401). Several damping pads (13) are evenly fixed on the outer walls of both sides of the drying tray (6) in the length direction.

6. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The bottom of both the drying basket (4) and the drying tray (6) is provided with several ventilation holes (14) for hot air to pass through.

7. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The sealing gasket (7) is a retractable structure and is made of a high-temperature resistant material.

8. The yeast drying apparatus for yeast drying according to claim 1, characterized in that: The air inlet of the hot air blower (8) is equipped with an air filter for filtering impurities and microorganisms in the air, and the air outlet of the exhaust fan (9) is equipped with an activated carbon filter for adsorbing odors and harmful gases in the exhaust air.

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