Tray rack of freeze drying box

Abstract

Two sliding grooves are formed in the inner side wall of an outer tray, two sliding blocks which are arranged in the sliding grooves in a sliding mode are fixedly connected to the two outer side walls of an inner tray respectively, a plurality of through holes are formed in the inner tray, and supporting assemblies which are connected with the outer tray and the inner tray are arranged beside the sliding grooves. The supporting assembly comprises a base, the bottom of the base is rotationally arranged on the outer tray, a sliding rod is arranged in the base in a sliding mode, the end, penetrating out of the base, of the sliding rod is rotationally arranged at the bottom of the inner tray, and the sliding rod is connected with the top of an inner cavity of the base through a spring. The inner tray slides to a high position along the sliding groove, so that the inner tray is erected in the air, the inner tray is provided with the through holes used for air circulation, the area, close to the inner tray, of the bottom of a material becomes smaller, then the freezing time difference of the upper portion and the lower portion of the material is shortened, and the influence of the tray on the material is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tray rack for drying box technical field, concretely relates to a tray rack of freeze drying box. BACKGROUND

[0002] Freeze drying box (Lyophilizer) is a kind of equipment that realizes material drying by removing water in material from solid state to gaseous state directly through freeze-vacuum sublimation principle.The core advantage is drying under low temperature (-50℃~0℃) and vacuum (1~100Pa) conditions, which maximizes the preservation of biological activity, nutritional ingredients and structural morphology of material, and the product after drying has good rehydration.

[0003] The working process of drying box is divided into three steps: pre-freezing stage, primary drying (sublimation stage) and secondary drying (desorption stage).

[0004] When drying material, the existing tray is a stainless steel tray with an integral structure at the bottom.When the temperature in the drying box changes, the contact area of the material and air is different, and the temperature change of the contact surface of the material contacting the bottom of the stainless steel tray is often delayed.For example, when the first pre-freezing stage is carried out in the drying box, due to the contact between the material and the tray contact surface, the freezing time of different parts of the material is different, and the water in the material will transfer to the frozen part, thereby affecting the quality of the material. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a tray rack of freeze drying box to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a tray rack of freeze drying box, comprising: an outer tray and an inner tray, two sliding grooves are formed on the inner side wall of the outer tray, two sliding blocks are fixedly connected to the outer side walls of the inner tray and slidingly arranged in the sliding grooves, a plurality of through holes are formed on the inner tray, a support assembly connecting the outer tray and the inner tray is arranged beside the sliding groove, the support assembly comprises a base, the base is rotatably arranged on the outer tray at the bottom, a sliding rod is slidingly arranged in the base, one end of the sliding rod penetrating out of the base is rotatably arranged on the bottom of the inner tray, and the sliding rod and the top of the inner cavity of the base are connected by a spring.

[0007] Further, the sliding groove is divided into two horizontal grooves and an inclined groove, and the junction of the horizontal groove and the inclined groove is rounded.

[0008] Further, the bottom of the sliding rod is fixedly connected with a disc, a piston sealing ring is fixedly sleeved on the outer side of the disc, one end of the spring is fixedly connected to the top of the inner cavity of the base, and the other end of the spring is fixedly connected to the disc.

[0009] Further, two symmetrical liquid passing holes are arranged on the disc, a liquid passing channel is arranged on the slide rod and the disc, a one-way valve is arranged in the liquid passing channel, and the inner cavity of the base is filled with pressure oil.

[0010] Further, a sealing ring is arranged at the contact position of the slide rod and the base.

[0011] Further, a containing groove is arranged at the top of the inner cavity of the outer tray, and the bottom of the base is rotatably arranged in the containing groove.

[0012] Further, a plurality of cylindrical protrusions matched with the through holes are fixedly connected to the top of the inner cavity of the outer tray.

[0013] In the above technical solution, the tray rack of the freeze-drying box has the following beneficial effects:

[0014] The inner tray is arranged in the outer tray and is slidable, when the tray is put into use, the inner tray is slid along the sliding groove to a high position, so that the inner tray is erected in the air, a plurality of through holes for air circulation are arranged on the inner tray, the area of the material bottom close to the inner tray is reduced, the time difference of the freezing of the upper and lower parts of the material is shortened, and the influence of the tray on the material is reduced.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the present disclosure.

[0016] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Fig. 1 The structural schematic diagram provided by the embodiment of the present application is provided.

[0019] Fig. 2 The partial structural schematic diagram provided by the embodiment of the present application is provided.

[0020] Fig. 3 The internal structural schematic diagram of the support assembly provided by the embodiment of the present application is provided.

[0021] Explanation of reference signs:

[0022] 1. Outer tray; 11. Slide groove; 12. Receiving groove; 13. Cylindrical protrusion; 2. Inner tray; 21. Slider; 22. Through hole; 3. Support assembly; 31. Base; 32. Slide rod; 33. Disc; 34. Liquid passage hole; 35. Piston seal ring; 36. Liquid passage channel; 37. Spring; 38. Sealing ring; 39. Check valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Please see Figs. 1-3 A tray rack for a freeze-drying oven includes an outer tray 1 and an inner tray 2. Two grooves 11 are formed on the inner sidewall of the outer tray 1. Two sliders 21, which are slidably disposed within the grooves 11, are fixedly connected to the two outer sidewalls of the inner tray 2. Several through holes 22 are formed on the inner tray 2 for air circulation. A support assembly 3 connecting the outer tray 1 and the inner tray 2 is provided beside the grooves 11. The support assembly 3 includes a base 31, the bottom of which is rotatably disposed on the outer tray 1. A sliding rod 32 is slidably disposed within the base 31, one end of which protrudes from the base 31 and is rotatably disposed on the bottom of the inner tray 2. The sliding rod 32 is connected to the top of the inner cavity of the base 31 by a spring 37.

[0025] Specifically, when the inner tray 2 slides to its highest position, the base 31 and the slide bar 32 are in the vertical direction. The spring 37 is in a compressed state at this time, and has a force that pulls the slide bar 32 upward, so that there is a supporting force between the outer tray 1 and the inner tray 2. This supporting force pushes the slider 21 against the inner wall of the slide groove 11, ensuring the stability of the inner tray 2.

[0026] This utility model provides a sliding inner tray 2 inside the outer tray 1. When the tray is put into use, the inner tray 2 is slid up along the slide 11, so that the inner tray 2 is suspended in the air. The inner tray 2 has several through holes 22 for air circulation, which reduces the area where the bottom of the material is in close contact with the inner tray 2, thereby shortening the time difference between the upper and lower parts of the material freezing and reducing the impact of the tray on the material.

[0027] Furthermore, the slide 11 is divided into two horizontally opened sections, upper and lower, and an inclined section connecting the two horizontal sections. The junction of the horizontal section and the inclined section is rounded.

[0028] Further, the bottom of the slide rod 32 is fixedly connected with a disc 33, the outer side of the disc 33 is fixedly sleeved with a piston sealing ring 35, one end of a spring 37 is fixedly connected on the top of the inner cavity of the base 31, the other end of the spring 37 is fixedly connected on the disc 33, two symmetrical liquid passing holes 34 are arranged on the disc 33, a liquid passing channel 36 is arranged on the slide rod 32 and the disc 33, a one-way valve 39 is installed in the liquid passing channel 36, the one-way valve 39 is a one-way valve for limiting the flow from bottom to top, the inner cavity of the base 31 is filled with pressure oil, the inner tray 2 is pushed by the staff, so that the inner tray 2 moves upwards along the slide groove 11, during which the slide rod 32 slides downwards in the base 31 against the elastic force of the spring 37, extruding the pressure oil below the disc 33, so that the pressure oil is transferred from the liquid passing channel 36 and from the two liquid passing holes 34 to the top of the disc 33 through the one-way valve 39, when the inner tray 2 slides to the highest point, the base 31 and the slide rod 32 are arranged vertically, the elastic force of the spring 37 will act as a supporting force between the outer tray 1 and the inner tray 2; when it is needed to withdraw the inner tray 2 to the position where it is in contact with the inner cavity bottom surface of the outer tray 1, a pushing force is applied to the inner tray 2, breaking the balance in the vertical direction, so that the sliding block 21 enters the inclined section of the slide groove 11, the direction in which the slide rod 32 slides out of the base 31 is no longer vertical, at this time, the elastic force of the spring 37 will pull the slide rod 32 to slide out of the base 31, so that the slide rod 32 pushes the inner tray 2 to slide along the slide groove 11 and retreat to the lowest point, during which, as the slide rod 32 slides outwards of the base 31, the pressure oil above the disc 33 will be transferred to below the disc 33 through the liquid passing holes 34, due to the loss of the main channel of the liquid passing channel 36, the transfer speed of the pressure oil is greatly reduced, thereby playing a buffering role, avoiding the force applied by the staff on the inner tray 2 being too large, so that the inner tray 2 hits the outer tray 1 to cause vibration and break the material.

[0029] Further, the contact position of the slide rod 32 and the base 31 is provided with a sealing ring 38, the sealing ring 38 improves the sealing performance of the base 31.

[0030] Further, the top of the inner cavity of the outer tray 1 is provided with a containing groove 12, the bottom of the base 31 is rotatably arranged in the containing groove 12, by arranging the containing groove 12 containing the base 31, the inner tray 2 can be lowered to the lowest point and attached to the outer tray 1.

[0031] Further, the top of the inner cavity of the outer tray 1 is fixedly connected with a plurality of cylindrical protrusions 13 matched with the through holes 22, when the inner tray 2 is attached to the outer tray 1, the cylindrical protrusions 13 are inserted into the corresponding through holes 22, the length of the cylindrical protrusions 13 is slightly longer than that of the through holes 22, so that the material placed on the surface of the inner tray 2 is gently lifted by the cylindrical protrusions 13, the material adhered to the inner tray 2 during the drying process can be lifted, facilitating the collection of the material by the staff.

[0032] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A tray rack for a freeze-drying oven, comprising: The outer tray (1) and the inner tray (2) are characterized in that: two sliding grooves (11) are opened on the inner side wall of the outer tray (1), two sliders (21) are fixedly connected to the two outer side walls of the inner tray (2) and are slidably disposed in the sliding grooves (11), a number of through holes (22) are opened on the inner tray (2), and a support assembly (3) connecting the outer tray (1) and the inner tray (2) is provided next to the sliding grooves (11). The support assembly (3) includes a base (31), the bottom of the base (31) is rotatably disposed on the outer tray (1), a sliding rod (32) is slidably disposed in the base (31), one end of the sliding rod (32) is rotatably disposed on the bottom of the inner tray (2), and the sliding rod (32) is connected to the top of the inner cavity of the base (31) by a spring (37).

2. The tray rack of a freeze-drying oven according to claim 1, characterized in that, The chute (11) is divided into two horizontal sections, an upper and a lower section, and an inclined section connecting the two horizontal sections. The junction of the horizontal and inclined sections is rounded.

3. The tray rack of a freeze-drying oven according to claim 1, characterized in that, The bottom of the slide rod (32) is fixedly connected to a disc (33), and a piston sealing ring (35) is fixedly sleeved on the outside of the disc (33). One end of the spring (37) is fixedly connected to the top of the inner cavity of the base (31), and the other end of the spring (37) is fixedly connected to the disc (33).

4. The tray rack of a freeze-drying oven according to claim 3, characterized in that, The disc (33) has two symmetrically arranged liquid passage holes (34), and the slide rod (32) and the disc (33) have a liquid passage channel (36) together. A one-way valve (39) is installed in the liquid passage channel (36), and the inner cavity of the base (31) is filled with pressurized oil.

5. The tray rack of a freeze-drying oven according to claim 1, characterized in that, A sealing ring (38) is provided at the contact position between the slide rod (32) and the base (31).

6. The tray rack of a freeze-drying oven according to claim 1, characterized in that, The outer tray (1) has a receiving groove (12) at the top of its inner cavity, and the bottom of the base (31) is rotatably disposed in the receiving groove (12).

7. The tray rack of a freeze-drying oven according to claim 1, characterized in that, The top of the inner cavity of the outer tray (1) is fixedly connected with several cylindrical protrusions (13) that cooperate with the through holes (22).

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