A freeze-dried powder drying device

Abstract

This application discloses a freeze-dried powder drying apparatus, belonging to the field of freeze-dried powder technology. It includes: a freeze dryer body; a sliding mechanism is provided in the center of the storage cavity of the freeze dryer body; the sliding mechanism includes sliding tracks and a shelf; there are two sliding tracks, fixed to both sides of the storage cavity; each sliding track includes a rolling element and a rectangular groove; the side of the rectangular groove is fixedly connected to the storage cavity; the bottom and side of the rectangular groove have first circular through holes; the rolling element rolls in the rectangular groove; and support plates are provided on both sides of the shelf, the width of which is equal to the width of the sliding track. This application improves the structure of the sliding mechanism, changing the sliding from planar contact to point-to-surface contact, thus reducing the contact area and preventing most of the contact surface from freezing in low-temperature environments.

Description

Technical Field

[0001] This application relates to the field of freeze-dried powder technology, specifically to a freeze-dried powder drying apparatus. Background Technology

[0002] The statements in this section are merely background information related to this application and do not necessarily constitute prior art.

[0003] The production process of freeze-dried powder requires "1. pretreatment, 2. pre-freezing, 3. sublimation drying, 4. desorption drying, 5. post-treatment", and a freeze dryer is needed in this process.

[0004] Patent publication number CN 222598232 U discloses a freeze dryer for freeze-dried powder. The first and second trays are moved by a limiting block sliding within a limiting frame, thereby removing the first and second trays from the outlet. However, after freeze-drying, the temperature drops to about -30 degrees Celsius, and frost easily condenses between the limiting block and the limiting frame, affecting the sliding of the trays. Therefore, it is necessary to design a freeze dryer for freeze-dried powder that can easily pull the rack at low temperatures. Utility Model Content

[0005] To address the aforementioned problems, this application proposes a freeze-dried powder drying apparatus.

[0006] The purpose of this application is to provide a freeze-dried powder drying device. By improving the structure of the sliding mechanism, the contact between the rolling element and the support plate is changed from planar contact sliding to point-to-surface contact sliding, reducing the contact area. In this way, most of the contact surface can be prevented from freezing in low-temperature environments.

[0007] To achieve the above objectives, this application adopts the following technical solution: A freeze-dried powder drying apparatus includes: a freeze dryer body, a sliding mechanism provided in the middle of the storage cavity of the freeze dryer body, the sliding mechanism including a sliding track and a shelf, two sliding tracks fixed on both sides of the storage cavity, each sliding track including a rolling element and a rectangular groove, the side of the rectangular groove being fixedly connected to the storage cavity, the bottom and side of the rectangular groove being provided with a first circular through hole, the rolling element rolling in the rectangular groove, and support plates provided on both sides of the shelf, the width of the support plates being equal to the width of the sliding track.

[0008] Furthermore, the depth of the rectangular groove is less than the width of the rectangular groove, and the width of the rectangular groove is greater than or equal to the diameter of the rolling element.

[0009] Furthermore, the shelf is a rectangular plate, and the rectangular plate has a second circular through hole.

[0010] Furthermore, the bottom of the shelf is provided with a rectangular groove.

[0011] Furthermore, the rolling element is made of silicon nitride ceramic balls.

[0012] Furthermore, the support plate has a sliding layer on the side near the sliding track, and the sliding layer is made of a three-millimeter-thick bronze pad.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: 1. This application improves the structure of the sliding mechanism by changing the sliding of the rolling element and the support plate from planar contact to point-to-surface contact, thereby reducing the contact area. This can prevent most of the contact surface from freezing in low-temperature environments.

[0014] 2. This application provides a first circular through hole on the side and bottom of the rectangular groove, which facilitates the flow of gas and prevents cold air from accumulating in the rectangular groove to form frost, thus affecting the rolling of the rolling element. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present application; Figure 2 This is a perspective view of the sliding mechanism of this application; Figure 3 This is a perspective view of the sliding track in this application;

[0016] The components include: 1. Freeze dryer body; 2. Storage cavity; 3. Storage rack; 4. Second circular through hole; 5. Support plate; 6. Sliding track; 7. First circular through hole; 8. Rectangular groove; 9. Rolling element. Detailed Implementation

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0018] A freeze-dried powder drying device, such as Figure 1-3As shown, the device includes: a freeze dryer body 1, a sliding mechanism in the middle of the storage cavity 2 of the freeze dryer body 1, the sliding mechanism including a sliding track 6 and a shelf 3, two sliding tracks 6 fixed on both sides of the storage cavity 2, the two sliding tracks 6 being symmetrical about the center line of the storage cavity 2, the sliding track 6 including a rolling element 9 and a rectangular groove 8, the side of the rectangular groove 8 being fixedly connected to the storage cavity 2, the bottom and side of the rectangular groove 8 being provided with a first circular through hole 7, the first circular through hole 7 facilitating airflow and preventing the accumulation of cold air containing moisture in the rectangular groove 8, the rolling element 9 rolling in the rectangular groove 8, the shelf 3 having support plates 5 on both sides, the width of the support plates 5 being equal to the width of the sliding track 6, thus the contact between the support plates 5 and the rolling elements 9 is a surface-to-point contact, which can better adapt to sliding at low temperatures and avoid freezing and inability to slide.

[0019] like Figure 3 As shown, the depth of the rectangular groove 8 is less than the width of the rectangular groove 8, and the width of the rectangular groove 8 is greater than or equal to the diameter of the rolling element 9. This allows the rolling element 9 to better contact the support plate 5, facilitating the sliding between the support plate 5 and the rolling element 9.

[0020] like Figure 2 The shelf 3 shown is a rectangular plate with a second circular through hole 4. A drying bottle containing liquid that needs to be freeze-dried is placed through the second circular through hole 4.

[0021] The bottom of the shelf 3 is provided with a rectangular groove 8, which makes it easy to pull the shelf 3.

[0022] The rolling element 9 is made of silicon nitride ceramic balls, which are resistant to low temperatures.

[0023] The support plate 5 has a sliding layer on the side near the sliding track 6. The sliding layer is made of a three-millimeter-thick bronze pad, which provides self-lubricating properties.

[0024] In the technical solution of this application, after the freeze-dried powder is produced, the door can be opened to pull the shelf 3. The support plate 5 contacts the rolling element 9. During the pulling process, the rolling element 9 slides. The sliding between the point and the surface experiences less resistance, thus successfully pulling out the drying bottle containing the freeze-dried powder from the shelf 3. Therefore, this application improves the structure of the sliding mechanism, making the push-pull mechanism more adaptable to low-temperature environments. By changing the sliding from planar contact to point-to-surface contact through the contact between the rolling element 9 and the support plate 5, the contact area is reduced. This prevents most of the contact surface from freezing in low-temperature environments. Furthermore, the first circular through holes 7 are provided on the side and bottom of the rectangular groove 8 to facilitate gas flow and prevent cold air from accumulating in the rectangular groove 8 and forming frost, which would affect the rolling of the rolling element 9. This structural improvement of the rolling mechanism maximizes its adaptability to low-temperature operation.

[0025] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. A freeze-dried powder drying apparatus, characterized in that, include: The freeze dryer body has a sliding mechanism in the middle of its storage cavity. The sliding mechanism includes a sliding track and a shelf. There are two sliding tracks, which are fixed on both sides of the storage cavity. Each sliding track includes a rolling element and a rectangular groove. The side of the rectangular groove is fixedly connected to the storage cavity. The bottom and side of the rectangular groove are provided with a first circular through hole. The rolling element rolls in the rectangular groove. The shelf has support plates on both sides, and the width of the support plates is equal to the width of the sliding track.

2. The freeze-dried powder drying apparatus as described in claim 1, characterized in that, The depth of the rectangular groove is less than the width of the rectangular groove, and the width of the rectangular groove is greater than or equal to the diameter of the rolling element.

3. The freeze-dried powder drying apparatus as described in claim 1, characterized in that, The shelf is a rectangular plate, and the rectangular plate has a second circular through hole.

4. The freeze-dried powder drying apparatus as described in claim 1, characterized in that, The bottom of the shelf has a rectangular groove.

5. The freeze-dried powder drying apparatus as described in claim 1, characterized in that, The rolling element is made of silicon nitride ceramic balls.

6. The freeze-dried powder drying apparatus as described in claim 1, characterized in that, The support plate has a sliding layer on the side near the sliding track, and the sliding layer is made of a three-millimeter-thick bronze pad.

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