CN116143051A - A plugging control device for a vacuum freeze dryer - Google Patents

Abstract

The invention relates to the technical field of freeze dryers, and discloses a plugging control device for a vacuum freeze dryer, which includes a pressing plate located directly above the drying chamber of the freeze dryer, a telescopic rod is installed on the top of the pressing plate, and the drying chamber of the freeze dryer A pressure sensor is installed on the outer periphery of the roof opening, and a bellows is also installed between the bottom surface of the body wallboard on the outside of the telescopic rod and the top surface of the pressure plate. The plugging control device of the vacuum freeze dryer drives the pressing plate to carry out the capping operation through the combination of the pressure sensor and the telescopic rod. The pressure is detected by the pressure sensor, which can avoid the occurrence of insufficient pressure or excessive pressure, thereby ensuring the safety of the cap. Stable and reliable.

Description

A plugging control device for a vacuum freeze dryer

technical field

The invention relates to the technical field of freeze dryers, in particular to a plugging control device for vacuum freeze dryers.

Background technique

The vacuum freeze dryer is based on the freeze drying technology and is equipped with vacuum drying equipment. In the process of freeze vacuum drying, no impurities are mixed into the object, and the original and active ingredients of the material and the shape of the material are not damaged. Vacuum freeze dryers are divided into functions, including ordinary shelf type, type with plugging device, multi-manifold type and type with pre-freezing kinetic energy.

Among them, when the vacuum freeze dryer with a stopper is pressed to the vial in the drying chamber, the contact pressure of the stopper is determined by the power of the drive stopper, which cannot monitor the pressure well, and has a potential strong pressure Cause the risk of broken vials.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a plugging control device for a vacuum freeze dryer, which has the advantages of convenient and simple control, stability and reliability, and solves the problems in the background art.

(2) Technical solution

In order to solve the above problems, the present invention provides the following technical solutions:

A plugging control device for a vacuum freeze-dryer, comprising a pressing plate located directly above the drying chamber of the freeze-drying machine, a telescopic rod is installed on the top of the pressing plate, a pressure sensor is installed on the outer periphery of the top opening of the drying chamber of the freeze-drying machine, and the outside of the telescopic rod is A corrugated pipe is also installed between the bottom surface of the body wallboard and the top surface of the pressing plate.

Preferably, the telescopic rod is electric, pneumatic, hydraulic or piston.

Preferably, a vacuum sealing ring is filled in the gap between the wallboard of the body and the telescopic rod, and a sealing ring that offsets the vacuum sealing ring is also sleeved on the telescopic rod.

(3) Beneficial effects

Compared with the prior art, the present invention provides a plugging control device for a vacuum freeze dryer, which has the following beneficial effects:

1. The plugging control device of the vacuum freeze dryer drives the pressing plate to carry out the capping operation through the combination of the pressure sensor and the telescopic rod. The pressure is detected by the pressure sensor, which can avoid the occurrence of insufficient or excessive pressure, thereby ensuring the pressure The cover is safe, stable and reliable.

2. The plugging control device of the vacuum freeze dryer, by adding bellows on the outer periphery of the telescopic rod, on the one hand, the bellows can absorb vibration energy, and can play the role of vibration reduction and noise reduction; on the other hand, the bellows provide additional sealing effects , reducing leakage gaps and ensuring a stable vacuum inside the freeze dryer.

Description of drawings

Fig. 1 is a schematic diagram of the plug structure of the present invention;

Fig. 2 is a schematic diagram of the installation structure of the bellows in the present invention.

In the figure: 1. The drying chamber of the freeze dryer; 2. The pressure plate; 3. The telescopic rod; 4. The pressure sensor; 5. The bellows; 6. The body wallboard; 7. The vacuum sealing ring;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal" etc. is based on the orientation or positional relationship shown in the drawings, and is only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Please refer to Figures 1 and 2, a plugging control device for a vacuum freeze dryer, including a pressure plate 2, the pressure plate 2 is located directly above the drying chamber 1 of the freeze dryer, and a pressure sensor 4 is installed on the outer periphery of the top opening of the drying chamber 1 of the freeze dryer , can also be replaced by an electronic limit switch or a proximity sensor. A telescopic rod 3 is installed in the middle of the top of the pressure plate 2. The telescopic rod 3 can be electric, pneumatic or hydraulic, or it can be driven by a piston. The body on the outside of the telescopic rod 3 A bellows 5 is also installed between the bottom surface of the wallboard 6 and the top surface of the pressure plate 2, and the bellows 5 adopts No. 316L stainless steel bellows;

The gap position between the body wallboard 6 and the telescopic rod 3 is filled with a vacuum sealing ring 7, and the telescopic rod 3 is also covered with a sealing ring 8 that offsets the vacuum sealing ring 7, and the sealing ring 8 is provided with two.

Working principle and application process of the present invention: control the extension of the telescopic rod 3 when pressing the stopper, so that it drives the pressing plate 2 to press down on the vial at the position of the drying chamber 1 of the freeze dryer, and the pressure sensor 4 detects the conflicting pressure at all times, so that it can Under proper pressure to ensure the completion of the capping and avoid crushing the vial, when the telescopic rod 3 moves, the bellows 5 expands and contracts following the movement, which meets the sealing requirements inside the freeze dryer.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (3)

1. A plugging control device for a vacuum freeze dryer, comprising a pressure plate (2) located directly above the drying chamber (1) of the freeze dryer, characterized in that a telescopic rod (3) is installed on the top of the pressure plate (2) , a pressure sensor (4) is installed on the outer periphery of the top opening of the freeze dryer drying chamber (1), and a bellows ( 5). 2. A plugging control device for a vacuum freeze dryer according to claim 1, characterized in that: the telescopic rod (3) is electric, pneumatic, hydraulic or piston. 3. A plugging control device for a vacuum freeze dryer according to claim 1, characterized in that: a vacuum sealing ring (7) is filled in the gap between the body wallboard (6) and the telescopic rod (3) , the telescopic rod (3) is also covered with a sealing ring (8) that is offset against the vacuum sealing ring (7).

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