Vacuum freeze dryer for milk powder

Abstract

The utility model discloses a milk powder vacuum freeze-drying machine which comprises a vacuum freeze-drying cylinder and a cylinder cover, the cylinder cover is rotatably connected to a cylinder opening of the vacuum freeze-drying cylinder, moving mechanisms are arranged on the two sides in a cavity of the vacuum freeze-drying cylinder, moving plates are installed on the moving mechanisms, a conveying belt is installed between the two moving plates, and the conveying belt is connected with the vacuum freeze-drying cylinder. A plurality of containing grooves are evenly distributed in the surface of the upper end of the conveying belt, a plurality of trays are placed on the containing grooves, and an equipment box is installed below the conveying belt. The moving mechanism is arranged, the first motor in the moving mechanism rotates to drive the screw rod to rotate, the screw rod drives the moving plates to move through the threaded blocks, one end of the conveying belt between the two moving plates can be conveniently moved to the outside of the vacuum freeze drying cylinder, and a tray on the conveying belt can be conveniently taken down from the outside; and discomfort of hands of workers caused by the temperature in the vacuum freeze-drying cylinder is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum dryers, in particular to a milk powder vacuum freeze dryer. Background Art

[0002] A vacuum freeze dryer is a device commonly used to prepare and preserve high-quality food, medicine, biological, and chemical products. Vacuum freeze drying technology is a technique used to remove moisture. It is often used on items that are susceptible to moisture or perishability. The purpose of drying is to extend the shelf life of items by reducing moisture and making them easier to store and transport. Vacuum freeze drying technology utilizes the sublimation of water in a low-temperature and vacuum environment to convert the frozen water directly from a solid state to a gaseous state, thereby achieving the purpose of removing moisture.

[0003] At present, when drying milk powder in an existing vacuum freeze dryer, the milk powder is usually placed directly inside a tray, and the tray is manually taken out and placed inside the vacuum freeze dryer. The residual heat inside the dryer will cause discomfort to the hands of the staff. At the same time, when drying milk powder, multiple trays containing milk powder are generally placed at the same time, which is inconvenient to place the external trays inside the dryer, resulting in inconvenience in use. Based on this, a milk powder vacuum freeze dryer is proposed to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a milk powder vacuum freeze dryer.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A milk powder vacuum freeze dryer comprises a vacuum freeze drying cylinder and a cylinder cover, wherein the cylinder cover is rotatably connected to the cylinder mouth of the vacuum freeze drying cylinder, a moving mechanism is provided on both sides of the cavity of the vacuum freeze drying cylinder, a moving plate is installed on each of the moving mechanisms, a conveyor belt is installed between the two moving plates, a plurality of placement grooves are arranged on the upper end surface of the conveyor belt, a plurality of trays are placed on the placement grooves, and an equipment box is installed below the conveyor belt.

[0007] As an improved solution of the present utility model, the moving mechanism includes a motor 1, a screw, a connecting plate, a threaded block and a guide rod. A motor 1 is installed on both sides of the end of the vacuum freeze-drying cylinder away from the cylinder mouth. The power output end of the motor 1 extends into the cavity and is fixedly connected to a screw. The screw is parallel to the axis of the vacuum freeze-drying cylinder. The screw passes through a connecting plate. The screw and the connecting plate rotate together. The connecting plate is fixedly connected to the inner wall of the corresponding side of the vacuum freeze-drying cylinder. A threaded block is screwed on the screw by threaded cooperation. The connecting plate is fixedly connected to a guide rod. The guide rod is parallel to the screw on the corresponding side. A through hole is provided on the threaded block. The guide rod passes through the through hole on the threaded block on the corresponding side and slides together with the through hole. The threaded block is located on the outside of the movable plate on the corresponding side and is fixedly connected to the movable plate on the corresponding side.

[0008] As an improved solution of the present invention, rotatable rollers are installed between the two ends of the two movable plates, the conveyor belt is sleeved on the two rotating rollers, and motor 2 is installed on the side of the movable plate away from the conveyor belt, and the power output end of motor 2 is connected to a rotating roller.

[0009] As an improved solution of the present invention, a receiving groove is provided on the upper portion of the tray, slots are provided on the tray at both sides of the receiving groove, and insert blocks are provided on the bottom of the tray below the slots.

[0010] As an improved solution of the present invention, the height of the insert block is greater than the depth of the slot.

[0011] As an improved solution of the present invention, the width of the placement slot matches the width of the tray.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The milk powder vacuum freeze dryer of the utility model is provided with a moving mechanism. When the motor in the moving mechanism rotates, the screw is driven to rotate, and the screw drives the moving plate to move through the threaded block, so that one end of the conveyor belt between the two moving plates is conveniently moved to the outside of the vacuum freeze drying cylinder, and the tray on the conveyor belt is conveniently removed from the outside, thereby avoiding the temperature inside the vacuum freeze drying cylinder causing discomfort to the hands of the staff, and it is more convenient to take and place the tray outside the vacuum freeze drying cylinder.

[0014] 2. The milk powder vacuum freeze dryer of the present invention uses a conveyor belt to transport the tray. The tray can be moved to the innermost side of the vacuum freeze drying cylinder from the outside of the vacuum freeze drying cylinder, making it convenient to put the tray in and out of the vacuum freeze drying cylinder. When performing batch drying, the drying efficiency of milk powder is effectively increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a milk powder vacuum freeze dryer;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of a milk powder vacuum freeze dryer;

[0017] Figure 3 A schematic diagram of the structure of a pallet.

[0018] In the figure: 1—vacuum freeze drying cylinder; 2—cylinder cover; 3—cavity; 5—moving plate; 6—conveyor belt; 7—placement slot; 8—tray; 9—equipment box; 10—rotating roller; 11—motor 2; 12—accommodation slot; 13—slot; 14—insert block; 401—motor 1; 402—screw; 403—connecting plate; 404—thread block. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-3 As shown, a milk powder vacuum freeze dryer includes a vacuum freeze drying cylinder 1 and a cylinder cover 2. The cylinder cover 2 is rotatably connected to the cylinder mouth of the vacuum freeze drying cylinder 1. Rotating the cylinder cover 2 forward opens the vacuum freeze drying cylinder 1, and rotating the cylinder cover 2 backward closes the vacuum freeze drying cylinder 1 and places the vacuum freeze drying cylinder 1 in a sealed state. The cavity 3 within the vacuum freeze drying cylinder 1 is used to process and dry the milk powder. A moving mechanism is provided on both sides of the cavity 3 of the vacuum freeze drying cylinder 1. A moving plate 5 is installed on each moving mechanism. A conveyor belt 6 is installed between the two moving plates 5. Figure 1 In the embodiment, a moving mechanism and a moving plate 5 are provided on both sides of the inner cavity 3 of the vacuum freeze drying cylinder 1. The moving mechanism is used to drive the moving plate 5 on the corresponding side to move. The upper end surface of the conveyor belt 6 is provided with a plurality of placement grooves 7, such as Figure 1 and Figure 2 As shown, multiple trays 8 are placed on the placement groove 7. When the conveyor belt 6 rotates, it is convenient to move the trays 8 near the outside of the vacuum freeze-drying cylinder 1 into the cavity 3 of the vacuum freeze-drying cylinder 1. The trays 8 are used to hold milk powder for convenient drying of the milk powder. An equipment box 9 is installed below the conveyor belt 6. The equipment box 9 is equipped with a vacuum device, a freezing device, and a heating device.

[0021] Specifically, the moving mechanism includes a motor 401, a screw 402, a connecting plate 403, a threaded block 404 and a guide rod. Figure 2As shown. A motor 1 is installed on both sides of the end of the vacuum freeze drying cylinder 1 away from the cylinder mouth. The power output end of the motor 1 401 extends into the cavity 3 and is fixedly connected to a screw 402. The screw 402 is parallel to the axis of the vacuum freeze drying cylinder 1. The screw 402 passes through a connecting plate 403. The screw 402 and the connecting plate 403 rotate together. The connecting plate 403 is fixedly connected to the inner wall of the corresponding side of the vacuum freeze drying cylinder 1. A threaded block 404 is screwed onto the screw 402 by threaded engagement. The connecting plate 403 is fixedly connected to a guide rod. The guide rod is parallel to the screw 402 on the corresponding side. The threaded block 404 is provided with a through hole. The guide rod passes through the through hole of the threaded block 404 on the corresponding side and slides in the through hole. The threaded block 404 is located on the outer side of the movable plate 5 on the corresponding side and is fixedly connected to the movable plate 5 on the corresponding side. When the motor 401 rotates, it drives the screw 402 to rotate, and the screw 402 drives the movable plate 5 to move through the threaded block 404, so that one end of the conveyor belt 6 between the two movable plates 5 can be moved to the outside of the vacuum freeze-drying cylinder 1, and the tray 8 can be placed in and taken out of the vacuum freeze-drying cylinder 1. It is convenient for operation and avoids discomfort to the hands of the staff due to the temperature inside the vacuum freeze-drying cylinder 1. When the threaded block 404 moves, it moves along the guide rod, and the guide rod guides the movement of the threaded block 404. The motor 401 is connected to a forward and reverse circuit and can perform forward and reverse rotation.

[0022] A rotatable roller 10 is installed between both ends of the two moving plates 5. The conveyor belt 6 is sleeved on the two rotating rollers 10. A second motor 11 is installed on the side of the moving plate 5 away from the conveyor belt 6. The power output end of the second motor 11 is connected to one of the rotating rollers 10. The second motor 11 drives a rotating roller 10 to rotate, and the rotating roller 10 drives the conveyor belt 6 to rotate, realizing the function of rotating and transmitting the conveyor belt 6. The second motor 11 is connected to a forward and reverse circuit, which can rotate forward and reverse.

[0023] Among them, the upper part of the tray 8 is provided with a receiving groove 12, such as Figure 3 As shown, slots 13 are provided on the tray 8 and on both sides of the accommodating groove 12, and insert blocks 14 are provided at the bottom of the tray 8 and below the slots 13. When the trays 8 are stacked, the insert blocks 14 on the upper tray 8 are inserted into the slots 13 on the lower tray 8, thereby ensuring the stability of the trays 8 when stacked.

[0024] The height of the insert 14 is greater than the depth of the slot 13. When the insert 14 on the upper tray 8 is inserted into the slot 13 on the lower tray 8, the bottom of the upper tray 8 will not come into contact with the milk powder placed in the lower tray 8. The width of the placement groove 7 matches the width of the tray 8. When the conveyor belt 6 transports the tray 8, the tray 8 will not move on the conveyor belt 6.

[0025] When using this milk powder vacuum freeze drying machine, first open the cylinder cover 2 and start the motor 1 401 in the moving mechanism. The motor 1 401 rotates to drive the screw 402 to rotate. The screw 402 drives the moving plate 5 to move through the threaded block 404, and moves one end of the conveyor belt 6 between the two moving plates 5 to the outside of the vacuum freeze drying cylinder 1. Then, multiple trays 8 are stacked and the stacked trays 8 are placed in the placement slots 7 on the conveyor belt 6. Then, start the motor 2 11, and the motor 2 11 drives the conveyor belt 6 to move the trays 8 into the vacuum freeze drying cylinder 1 for a distance. Then, the stacked trays 8 are placed in the placement slots 7 of the next row. When the trays 8 placed for the first time are stacked, the trays 8 are placed in the placement slots 7 of the next row. When the tray 8 enters the innermost part of the vacuum freeze drying cylinder 1, the motor 401 is controlled to rotate in the opposite direction to completely send the conveyor belt 6 into the cavity 3 inside the vacuum freeze drying cylinder 1, and the cylinder cover 2 is closed. Then, the pre-cooling system inside the equipment box 9 pre-cools the milk powder. After the pre-cooling treatment, the vacuum system vacuum treats the cavity 3 inside the vacuum freeze drying cylinder 1, and then the heating system heats and dries the milk powder. After the drying treatment is completed, the cylinder cover 2 is opened, and the motor 401 is controlled to rotate to extend one end of the conveyor belt 6 out of the cylinder mouth of the vacuum freeze drying cylinder 1. All the multiple trays 8 on the conveyor belt 6 are removed, and then the tray 8 containing undried milk powder is placed to continue processing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A milk powder vacuum freeze dryer, comprising a vacuum freeze drying cylinder (1) and a cylinder cover (2), wherein the cylinder cover (2) is rotatably connected to the cylinder mouth of the vacuum freeze drying cylinder (1), characterized in that: A moving mechanism is provided on both sides of the cavity (3) of the vacuum freeze drying cylinder (1), a moving plate (5) is installed on each of the moving mechanisms, a conveyor belt (6) is installed between the two moving plates (5), a plurality of placement grooves (7) are arranged on the upper end surface of the conveyor belt (6), a plurality of trays (8) are placed on the placement grooves (7), and an equipment box (9) is installed below the conveyor belt (6).

2. A milk powder vacuum freeze dryer according to claim 1, characterized in that: The moving mechanism includes a motor (401), a screw (402), a connecting plate (403), a threaded block (404) and a guide rod. The motor (401) is installed on both sides of the end of the vacuum freeze drying cylinder (1) away from the cylinder mouth. The power output end of the motor (401) extends into the cavity (3) and is fixedly connected to a screw (402). The screw (402) is parallel to the axis of the vacuum freeze drying cylinder (1). The screw (402) passes through a connecting plate (403). The screw (402) and the connecting plate (403) are rotated together. The connecting plate (403) is fixedly connected to the inner wall of the corresponding side of the vacuum freeze drying cylinder (1); a threaded block (404) is screwed onto the screw (402) in a threaded manner; the connecting plate (403) is fixedly connected to a guide rod; the guide rod is parallel to the screw (402) on the corresponding side; a through hole is provided on the threaded block (404); the guide rod passes through the through hole on the threaded block (404) on the corresponding side and slides with the through hole; the threaded block (404) is located on the outer side of the movable plate (5) on the corresponding side and is fixedly connected to the movable plate (5) on the corresponding side.

3. A milk powder vacuum freeze dryer according to claim 1, characterized in that: A rotatable rotating roller (10) is installed between both ends of the two movable plates (5), the conveyor belt (6) is sleeved on the two rotating rollers (10), and a second motor (11) is installed on the side of the movable plate (5) away from the conveyor belt (6), and the power output end of the second motor (11) is connected to a rotating roller (10).

4. A milk powder vacuum freeze dryer according to claim 1, characterized in that: The upper portion of the tray (8) is provided with a receiving groove (12), the tray (8) is provided with slots (13) on both sides of the receiving groove (12), and the bottom of the tray (8) is provided with an insert block (14) below the slots (13).

5. A milk powder vacuum freeze dryer according to claim 4, characterized in that: The height of the insert block (14) is greater than the depth of the slot (13).

6. A milk powder vacuum freeze dryer according to claim 5, characterized in that: The width of the placement slot (7) matches the width of the tray (8).

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