A vacuum hood for a well-sealed vacuum freeze dryer

Abstract

This utility model provides a vacuum cover for a vacuum freeze dryer with good sealing performance, belonging to the field of vacuum dryer technology. It includes a dryer body and a vacuum cover. A mounting base is fixedly connected to the top of the dryer body. The vacuum cover includes a base fixedly connected to the bottom, and the vacuum cover is slidably connected to the top of the mounting base via the base. A vertical ring is fixedly connected to the bottom of the inner side of the mounting base, and the vertical ring is slidably connected to the inner side of the bottom of the base. This utility model, by setting up a vertical ring, a sealing component, and sealing gaskets, allows the device to compress the top of the vertical ring with a rubber gasket, and strengthens the compression force of the rubber ring with a support ring, ensuring that the bottom of the rubber ring is tightly against the top of the vertical ring, thus ensuring a tight seal between them. Furthermore, two sealing gaskets in the lower cavity form a second sealing layer with the bottom of the vertical ring, further guaranteeing the seal between the vacuum cover and the mounting base, and improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of vacuum dryer technology, and in particular to a vacuum hood for a vacuum freeze dryer with good sealing performance. Background Technology

[0002] Vacuum freeze dryers are advanced drying equipment that removes moisture from materials through the principle of sublimation. They are widely used in many fields such as medicine, food, biological products, and chemicals. Some vacuum freeze dryers are equipped with a vacuum hood on the outside and the material tray is placed inside the vacuum hood to work.

[0003] The patent with publication number CN208269535U discloses a simple vacuum freeze dryer, which includes a machine body. The machine body is equipped with a freezing device and an evaporation device. The evaporation device is equipped with a freezing chamber. A material tray is placed in the freezing chamber. The freezing chamber is connected to the freezing device. The freezing chamber is connected to a vacuum pump through a vacuum pump connecting pipe. A vacuum hood is installed on the opening of the freezing chamber.

[0004] In the above case, the vacuum hood was slidably installed on the top of the machine body for vacuum drying. Because the device requires a complete vacuum environment to operate, and the vacuum hood is only slidably connected to the machine body, the airtightness of the connection point of the vacuum hood cannot be guaranteed, which will affect the drying process and reduce the practicality of the device.

[0005] Therefore, this utility model provides a vacuum hood for a vacuum freeze dryer with good sealing performance to meet the requirements. Utility Model Content

[0006] The purpose of this invention is to provide a vacuum hood for a vacuum freeze dryer with good sealing performance, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum hood for a vacuum freeze dryer with good sealing performance, comprising a dryer body and a vacuum outer hood. The top of the dryer body is fixedly connected to a mounting base. The vacuum outer hood includes a base fixedly connected to the bottom. The vacuum outer hood is slidably connected to the top of the mounting base via the base. A vertical ring is fixedly connected to the bottom of the inner side of the mounting base. The vertical ring is slidably connected to the inner side of the bottom of the base. An upper cavity is opened inside the base on the outer side of the top of the vertical ring. A sealing component is fixedly connected to the inner side of the upper cavity. A vacuum chamber is opened inside the vacuum outer hood. Several outer support rings are fixedly connected around the vacuum chamber. Several top support rings are fixedly connected to the top of the vacuum chamber.

[0008] In a preferred embodiment, the sealing assembly includes a rubber ring fixedly connected to the inner side of the upper cavity, and a support ring fixedly connected to the inner side of the rubber ring.

[0009] In a preferred embodiment, the top end of the vertical ring extends into the upper cavity and fits tightly against the bottom end of the rubber ring.

[0010] In a preferred embodiment, the base has a lower cavity located on the outer side of the bottom end of the vertical ring, and sealing gaskets are fixedly connected to both ends of the inner side of the lower cavity.

[0011] In a preferred embodiment, the two sealing gaskets are tightly fitted to both sides of the bottom end of the vertical ring, and the bottom of the base is tightly fitted to the bottom end of the inner side of the mounting seat.

[0012] In a preferred embodiment, the outer support rings are evenly distributed on the outside of the vacuum cavity, and the top support ring and the inner side of the outer support ring are each provided with a number of ventilation holes.

[0013] In a preferred embodiment, a gas pipe is fixedly connected to one side of the vacuum casing, one end of the gas pipe is fixedly connected to the vacuum chamber, and a valve is fixedly connected to the other end of the gas pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model, by setting up a vertical ring, a sealing component, and a sealing gasket, allows the device to compress the top of the vertical ring with a rubber gasket, and strengthens the compression force of the rubber ring with a support ring, so that the bottom of the rubber ring is tightly attached to the top of the vertical ring, ensuring the airtightness between it and the vertical ring. Furthermore, the two sealing gaskets in the lower cavity form a second airtight seal with the bottom of the vertical ring, further ensuring the airtightness between the vacuum outer cover and the mounting base, and improving the practicality of the device.

[0016] This utility model, by setting up a vacuum chamber, an outer support ring, and a top support ring, allows the vacuum chamber to work in conjunction with the vacuum environment inside the device, thereby improving the vacuum effect of the device, preventing the transfer of external temperature, ensuring the cooling effect of the device, improving the working efficiency of the device, and increasing the strength of the vacuum casing by setting up the outer support ring and the top support ring, ensuring the stability of the device. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a vacuum hood for a vacuum freeze dryer with good sealing performance;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the vacuum casing;

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 for Figure 2 Enlarged diagram of point B.

[0021] In the diagram: 1. Dryer body; 2. Vacuum cover; 3. Mounting base; 4. Vertical ring; 5. Base; 6. Upper chamber; 7. Lower chamber; 8. Rubber ring; 9. Support ring; 10. Sealing gasket; 11. Vacuum chamber; 12. Outer support ring; 13. Top support ring; 14. Vent hole; 15. Air pipe. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] Please see Figures 1-4 This utility model provides a vacuum cover for a vacuum freeze dryer with good sealing performance, including a dryer body 1 and a vacuum cover 2. A mounting base 3 is fixedly connected to the top of the dryer body 1. The vacuum cover 2 includes a base 5 fixedly connected to the bottom. The vacuum cover 2 is slidably connected to the top of the mounting base 3 via the base 5. A vertical ring 4 is fixedly connected to the bottom end of the inner side of the mounting base 3. The vertical ring 4 is slidably connected to the inner side of the bottom end of the base 5. An upper cavity 6 is formed inside the base 5, located outside the top of the vertical ring 4. The inner side of the upper cavity 6 is fixedly connected to... A sealing assembly is fixedly connected to the upper cavity 6. The sealing assembly includes a rubber ring 8 fixedly connected to the inner side of the upper cavity 6. A support ring 9 is fixedly connected to the inner side of the rubber ring 8. The top end of the vertical ring 4 extends into the upper cavity 6 and is tightly fitted with the bottom end of the rubber ring 8. A lower cavity 7 is opened inside the base 5 on the outer side of the bottom end of the vertical ring 4. Sealing gaskets 10 are fixedly connected to both ends of the inner side of the lower cavity 7. The two sealing gaskets 10 are tightly fitted with the two sides of the bottom end of the vertical ring 4. The bottom of the base 5 is tightly fitted with the bottom end of the inner side of the mounting base 3.

[0025] Place the items to be dried into the dryer body 1, cover it with the vacuum cover 2, insert the base 5 into the mounting base 3, and at the same time, the top of the vertical ring 4 passes through the lower cavity 7 into the upper cavity 6 and presses the bottom of the rubber ring 8 upward so that the bottom of the rubber ring 8 wraps around the top of the vertical ring 4. Install the vacuum cover 2 and perform freeze drying through the dryer body 1.

[0026] The top of the vertical ring 4 extends into the upper cavity 6, allowing the rubber ring 8 to tightly compress the top of the vertical ring 4 when subjected to external force. The rubber ring 8 itself has good elasticity and can deform under pressure, filling the small unevenness on the surface of the top of the vertical ring 4 and ensuring the reliability of the seal. The support ring 9 is fixedly connected to the inner side of the rubber ring 8, providing support and reinforcement for the rubber ring 8. This not only improves the tightness of the seal but also extends the service life of the rubber ring 8, as the support ring 9 can distribute the pressure on the rubber ring 8 and reduce fatigue damage caused by long-term stress. The two sealing gaskets 10 are tightly fitted to both sides of the bottom end of the vertical ring 4, forming a second sealing line. This double sealing design greatly improves the sealing performance of the device, effectively preventing gas leakage and ensuring the vacuum environment inside the vacuum casing 2.

[0027] Please see Figures 1-4 The vacuum outer cover 2 has a vacuum chamber 11 inside. Several outer support rings 12 are fixedly connected around the vacuum chamber 11, and several top support rings 13 are fixedly connected to the top of the vacuum chamber 11. The outer support rings 12 are evenly distributed on the outside of the vacuum chamber 11. Several vent holes 14 are opened on the inner side of the top support rings 13 and the outer support rings 12. A gas pipe 15 is fixedly connected to one side of the vacuum outer cover 2. One end of the gas pipe 15 is fixedly connected to the vacuum chamber 11, and a valve is fixedly connected to the outer side of the other end.

[0028] When the dryer body 1 is working, the vacuum chamber 11 is used to cooperate with the internal vacuum environment of the device and is isolated from the external temperature. The outer support ring 12 and the top support ring 13 support the vacuum cover 2 to prevent it from deforming due to external air compression. The rubber ring 8 and the sealing gasket 10 are tightly attached to the vertical ring 4 to ensure the airtightness of the vacuum cover 2.

[0029] The vacuum chamber 11 can closely cooperate with the vacuum environment inside the dryer body 1 to increase the working efficiency of the dryer body 1. It also avoids the transfer of external temperature and ensures a low temperature environment inside the device, which is especially important for heat-sensitive materials that need to be dried at low temperatures. By maintaining a stable low temperature and low pressure environment, the vacuum chamber 11 significantly improves the drying efficiency and quality of the device.

[0030] The outer support ring 12 and the top support ring 13 provide additional support at key locations, enhancing the structural strength and stability of the vacuum casing 2. They can effectively disperse the pressure generated when external air is compressed, preventing the vacuum casing 2 from deforming or being damaged, thus giving the device good durability and reliability.

[0031] The working principle and usage process of this utility model are as follows: The item to be dried is placed inside the dryer body 1, and the vacuum cover 2 is covered, so that the base 5 is inserted into the mounting base 3. At the same time, the top of the vertical ring 4 passes through the lower cavity 7 and enters the upper cavity 6, and presses the bottom of the rubber ring 8 upward, so that the bottom of the rubber ring 8 wraps around the top of the vertical ring 4. The vacuum cover 2 is installed, and the freeze drying work is carried out through the dryer body 1. The outer support ring 12 and the top support ring 13 provide additional support at key positions, which enhances the structural strength and stability of the vacuum cover 2, effectively disperses the pressure generated when the external air is squeezed, and prevents the vacuum cover 2 from deforming or being damaged, so that the device has good durability and reliability.

[0032] The above-mentioned dryer body 1 is the prior art disclosed in this utility model. The model of dryer body 1 is YS-LGJ-10, and the vacuum freeze drying principle of dryer body 1 is also a prior art disclosed technical means, which will not be described in detail here.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum cover for a vacuum freeze-drying machine with good sealing, comprising a machine body (1) and a vacuum cover (2), characterized in that, The top of the dryer body (1) is fixedly connected to a mounting base (3). The vacuum cover (2) includes a base (5) fixedly connected to the bottom. The vacuum cover (2) is slidably connected to the top of the mounting base (3) via the base (5). A vertical ring (4) is fixedly connected to the bottom of the inner side of the mounting base (3). The vertical ring (4) is slidably connected to the inner side of the bottom of the base (5). An upper cavity (6) is opened inside the base (5) on the outer side of the top of the vertical ring (4). A sealing component is fixedly connected to the inner side of the upper cavity (6). A vacuum chamber (11) is opened inside the vacuum cover (2). Several outer support rings (12) are fixedly connected around the vacuum chamber (11). Several top support rings (13) are fixedly connected to the top of the vacuum chamber (11).

2. The vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 1, characterized in that, The sealing assembly includes a rubber ring (8) fixedly connected to the inner side of the upper cavity (6), and a support ring (9) is fixedly connected to the inner side of the rubber ring (8).

3. The vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 2, characterized in that, The top of the vertical ring (4) extends into the upper cavity (6) and fits tightly against the bottom of the rubber ring (8).

4. The vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 1, characterized in that, The base (5) has a lower cavity (7) located on the outer side of the bottom end of the vertical ring (4), and both ends of the lower cavity (7) are fixedly connected with sealing gaskets (10).

5. A vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 4, characterized in that, The two sealing gaskets (10) are tightly fitted to the two sides of the bottom end of the vertical ring (4), and the bottom of the base (5) is tightly fitted to the bottom end of the inner side of the mounting seat (3).

6. The vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 1, characterized in that, The outer support ring (12) is evenly distributed on the outside of the vacuum cavity (11), and the top support ring (13) and the inner side of the outer support ring (12) are provided with several ventilation holes (14).

7. A vacuum hood for a vacuum freeze dryer with good sealing performance according to claim 1, characterized in that, A gas pipe (15) is fixedly connected to one side of the vacuum outer cover (2). One end of the gas pipe (15) is fixedly connected to the vacuum chamber (11), and a valve is fixedly connected to the other end of the gas pipe (15).

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