Freeze dryer feeding small door sealing ring cleaning and sterilizing device and freeze dryer

Abstract

The utility model provides a freeze dryer feeding door sealing ring cleaning and sterilizing device and freeze dryer, the cleaning and sterilizing device comprises a box body, a door frame, a feeding door, a first sealing ring, a second sealing ring and a multi-channel valve group, the feeding door is arranged on the front side of the box body, the door frame is arranged on the periphery of the front side of the box body, and the first sealing ring is arranged on the door frame. The first sealing ring and the second sealing ring are both arranged on the door frame, a flow guide groove communicated end to end is formed in the door frame, the flow guide groove is located between the first sealing ring and the second sealing ring, a plurality of cleaning holes are distributed in the flow guide groove, the flow guide groove is communicated with cleaning water through a multi-channel valve set, and the cleaning holes are located in and penetrate through the front side surface of the door frame. Cleaning water enters the flow guide groove through the multi-channel valve set, flows in the flow guide groove and is sprayed out through the cleaning holes, the gap between the small feeding door and the door frame and the first sealing ring and the second sealing ring which are located on the two sides of the flow guide groove can be effectively cleaned, and glass fragments and dirt attached to the gap and the first sealing ring and the second sealing ring can be cleaned. When the freeze dryer is sterilized after flushing is finished, steam in the box body can enter the flow guide groove through the cleaning hole and then flow through the multi-channel valve bank to sterilize related pipelines.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze drying, in particular to a freeze dryer feeding door sealing ring cleaning and sterilizing device and a freeze dryer. Background Art

[0002] The primary function of a freeze dryer is to create a sealed chamber within which materials undergo high-pressure cleaning, steam sterilization, and vacuum freeze-drying under specific temperature and pressure conditions. The freeze dryer consists of a feed door, a chamber, a drive mechanism, and guide plates, with the outer perimeter of the chamber forming the door frame. Materials are loaded and unloaded through the feed door. The door is opened and closed by vertical lifting. The drive mechanism drives the door to slide and rise within the guide plate, opening and closing it relative to the chamber. The door frame incorporates a dual sealing structure consisting of a primary and secondary sealing ring to ensure a secure seal.

[0003] During freeze dryer cleaning, glass fragments and dirt can accumulate around the seals, potentially damaging them and causing air leaks. During the sterilization process, steam leaks pose a safety hazard to both the cleanroom and the operators. The seals cannot be cleaned during routine freeze dryer cleaning. Utility Model Content

[0004] In view of this, the utility model aims to propose a freeze dryer feed door sealing ring cleaning and sterilization device and a freeze dryer, which can effectively clean the sealing ring to solve the problem that the sealing ring is prone to dirt and leakage, thereby affecting the normal operation of the freeze dryer.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] On the one hand, the present application proposes a freeze dryer feed door seal ring cleaning and sterilization device, the cleaning and sterilization device includes a box body, a door frame, a feed door, a first seal ring, a second seal ring and a multi-channel valve group, the feed door is arranged on the front side of the box body, and is used to open or close the box body, the front periphery of the box body is a door frame, the first seal ring and the second seal ring are both arranged on the door frame, the interior of the door frame is provided with a guide groove connected end to end, and the guide groove is located between the first seal ring and the second seal ring, the guide groove is distributed with multiple cleaning holes, the guide groove is connected to the cleaning water through the multi-channel valve group, and the cleaning holes are located and pass through the front surface of the door frame. The cleaning water enters the guide groove through the multi-channel valve group, flows in the guide groove, and is sprayed out through the cleaning holes, which can effectively clean the gap between the feed door and the door frame, as well as the first seal ring and the second seal ring located on both sides of the guide groove, and clean the glass fragments and dirt attached to them. When the freeze dryer is sterilized after flushing, the steam in the box can enter the guide groove through the cleaning hole, and then flow through the multi-channel valve group to sterilize the relevant pipelines.

[0007] Furthermore, the cleaning and sterilizing device includes a first pipeline and a second pipeline. The multi-channel valve group is connected to the guide groove through the first pipeline, and the multi-channel valve group is connected to the housing through the second pipeline. When the housing is flushed, the sealing ring is also flushed, reducing the need for significant changes to the freeze dryer structure.

[0008] Furthermore, a first mounting groove and a second mounting groove are formed on the front surface of the door frame. The first mounting groove is used to accommodate the first sealing ring, and the second mounting groove is used to accommodate the second sealing ring. The first mounting groove is arranged on the outer periphery of the second mounting groove to prevent the two sealing rings from interfering with each other and facilitate the two sealing rings to function separately.

[0009] Furthermore, the first sealing ring is an inflatable sealing ring connected to the inflation device, and the second sealing ring is an O-ring for vacuum sealing. During high-pressure operation, the inflatable sealing ring functions, with the inflation device inflating the inflatable sealing ring, causing it to lift up and rest against the feed door and door frame, effectively sealing the chamber. During vacuum operation, due to the vacuum within the chamber, the external atmospheric pressure pushes the feed door toward one side of the chamber, squeezing the O-ring for vacuum sealing.

[0010] On the other hand, the present application also proposes a freeze dryer, which adopts the above-mentioned freeze dryer feed door sealing ring cleaning and sterilization device.

[0011] The freeze dryer further includes a control system for controlling the multi-channel valve assembly and the freeze dryer program. The multi-channel valve assembly includes a first valve and a second valve, the first valve being connected to a wash water inlet, and the second valve being connected to a condensate outlet. The control system is used to link control of the multi-channel valve assembly with control of the freeze dryer program.

[0012] Furthermore, in the cleaning stage, the control system controls the first valve to open and the second valve to close, and the cleaning water enters the box and the guide groove to start flushing; in the steam sterilization stage, the control system controls the second valve to open and the first valve to close, and the steam in the box passes through the cleaning hole, the guide groove and the second valve, sterilizes the pipeline passing through, and is then discharged from the condensate outlet.

[0013] Furthermore, the freeze dryer includes a guide plate and a driving device, which is connected to the feed door. The driving device drives the feed door to slide and rise and fall in the guide plate to open or close the feed door to the box body.

[0014] Compared with the prior art, the freeze dryer feed door sealing ring cleaning and sterilization device and the freeze dryer described in the present invention have the following advantages:

[0015] (1) The use of the guide groove and the cleaning hole can effectively clean the gap between the feed door and the door frame, as well as the glass fragments and dirt attached to the two sealing rings, to avoid leakage of the sealing rings due to the adhesion and squeezing of dirt, which is beneficial to increase the service life of the sealing rings and reduce the risk of leakage during the use of the freeze dryer and affecting the quality of the product.

[0016] (2) When the freeze dryer is sterilized after flushing, the steam in the box can enter the guide groove through the cleaning hole, and then flow through the multi-channel valve group to sterilize the relevant pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural diagram of the freeze dryer feed door sealing ring cleaning and sterilization device described in the utility model;

[0019] Figure 2 This is a cross-sectional view of the freeze dryer feed door sealing ring cleaning and sterilization device described in the utility model;

[0020] Figure 3 This is a cross-sectional view of the door frame described in the present invention.

[0021] Description of reference numerals:

[0022] 1. Guide groove; 2. Cleaning hole; 3. Multi-channel valve group; 4. Guide plate; 5. Temperature sensor; 6. Door frame; 7. Feed door; 8. First sealing ring; 9. Second sealing ring; 10. First valve; 11. Second valve; 12. Drive device; 13. First installation groove; 14. Second installation groove. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The embodiments described in the present invention are exemplary and intended to be used to explain the present invention, and should not be understood as limiting the present invention.

[0024] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The embodiments of the present invention and the features therein may be combined unless otherwise specified.

[0025] like Figures 1 to 3 The shown device is a freeze dryer feed door sealing ring cleaning and sterilization device, comprising a box body, a door frame 6, a feed door 7, a first sealing ring 8, a second sealing ring 9 and a multi-channel valve group 3. The feed door 7 is arranged on the front side of the box body for opening or closing the box body. The front periphery of the box body is the door frame 6. The first sealing ring 8 and the second sealing ring 9 are both arranged on the door frame 6. A guide groove 1 connected end to end is arranged inside the door frame 6, and the guide groove 1 is located between the first sealing ring 8 and the second sealing ring 9. A plurality of cleaning holes 2 are distributed in the guide groove 1. The guide groove 1 is connected to the cleaning water through the multi-channel valve group 3. The cleaning hole 2 is located on and passes through the front surface of the door frame 6.

[0026] For ease of description, in this application, the side facing the feed gate 7 is defined as the front side, and the side facing the housing is defined as the rear side. Cleaning water enters the guide groove 1 through the multi-channel valve group 3, flows in the guide groove 1, and is ejected through the cleaning hole 2, which can effectively clean the gap between the feed gate 7 and the door frame 6, as well as the first sealing ring 8 and the second sealing ring 9 located on both sides of the guide groove 1, and clean the glass fragments and dirt attached to them. Glass containers are usually placed in the housing of the freeze dryer. After a series of sterilization, vacuum freeze drying and other processes, some glass containers will break, and the debris adheres to the sealing ring, which can easily cause the sealing ring to be damaged. Since the first sealing ring 8 and the second sealing ring 9 are sanitary blind spots and difficult to clean, a damaged sealing ring will cause air leakage, which not only affects the normal operation of the freeze dryer but also poses certain safety hazards. By setting the guide groove 1 and the cleaning hole 2, the first sealing ring 8 and the second sealing ring 9 can be rinsed to reduce the dirt and grime that accumulates in the sealing ring. At the same time, when the freeze dryer is sterilized after flushing, the steam in the box can enter the guide groove 1 through the cleaning hole 2, and then flow through the multi-channel valve group 3 to sterilize the relevant pipelines. Because the guide groove 1 is set inside the door frame 6, it can be hidden and will not affect the normal operation of the freeze dryer.

[0027] The guide trough 1 has a slope to reduce residual water after cleaning and sterilization. The guide trough 1 must be able to withstand the pressure of the cleaning water and steam, without leaking or deforming the feed gate 7. In this application, the number and shape of the cleaning holes 2 are not specifically limited; they only need to ensure effective cleaning.

[0028] The freeze dryer feed door sealing ring cleaning and sterilization device includes a first pipeline and a second pipeline. The multi-channel valve group 3 is connected to the guide groove 1 through the first pipeline, and the multi-channel valve group 3 is connected to the box through the second pipeline. When the cleaning water enters, one path enters the box through the second pipeline to clean the box, and the other path is introduced into the first pipeline to enter the guide groove 1 to clean the first sealing ring 8 and the second sealing ring 9. In this way, the sealing ring is flushed at the same time as the box is flushed, reducing the significant changes to the freeze dryer structure. For freeze dryer manufacturers, there is no need to make too many changes to the original production line, which is conducive to cost savings.

[0029] The front surface of the door frame 6 is provided with a first mounting groove 13 and a second mounting groove 14. The first mounting groove 13 is used to accommodate the installation of the first sealing ring 8, and the second mounting groove 14 is used to accommodate the installation of the second sealing ring 9. The first mounting groove 13 is arranged on the outer periphery of the second mounting groove 14 to avoid mutual interference between the two sealing rings and facilitate the two sealing rings to play their respective roles.

[0030] Specifically, the first sealing ring 8 is an inflatable sealing ring, which is connected to the inflation device, and the second sealing ring 9 is an O-type vacuum sealing ring. The freeze dryer of the present application has two working states during use: high pressure and vacuum. In the high-pressure working state, the inflatable sealing ring plays a role, and the inflation device inflates the inflatable sealing ring so that the inflatable sealing ring is lifted up and rests between the feed door 7 and the door frame 6, thereby playing a good sealing role. The high-pressure cleaning and steam sterilization processes are high-pressure working states. In the vacuum working state, the O-type vacuum sealing ring plays a role. Since the box body is in a vacuum state, the external atmospheric pressure pushes the feed door 7 toward one side of the box body, and the O-type vacuum sealing ring is squeezed to play a sealing role. The vacuum freeze-drying process is a vacuum working state.

[0031] The present application proposes a freeze dryer that uses the above-mentioned freeze dryer feed door sealing ring cleaning and sterilization device. The freeze dryer also includes a control system, which is used to control the multi-channel valve group 3 and the freeze dryer program. The multi-channel valve group 3 includes a first valve 10 and a second valve 11. The first valve 10 is connected to the cleaning water inlet, and the second valve 11 is connected to the condensate outlet. The control system is used to link the control of the multi-channel valve group 3 with the freeze dryer program control. Specifically, during the cleaning phase, the control system controls the first valve 10 to open and the second valve 11 to close, and the cleaning water enters the box and the guide groove 1 to start flushing. During the steam sterilization phase, the control system controls the second valve 11 to open and the first valve 10 to close. After the steam in the box passes through the cleaning hole 2, the guide groove 1 and the second valve 11, the steam is sterilized in the pipeline and then discharged from the condensate outlet. The freeze dryer is provided with a temperature sensor 5. The temperature feedback from the temperature sensor 5 is used to control and monitor the sterilization effect of the pipeline.

[0032] As a preferred example of the present invention, the freeze dryer includes a guide plate 4 and a driving device 12, and the driving device 12 is connected to the feed door 7. The driving device 12 drives the feed door 7 to slide and rise and fall in the guide plate 4 to realize the opening or closing of the feed door 7 to the box body.

[0033] It should be noted that the relevant components and pipelines of the freeze dryer of this application can be sterilized, meet GMP requirements, and will not cause contamination to the freeze dryer.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A freeze dryer feed door sealing ring cleaning and sterilization device, characterized in that: The cleaning and sterilizing device comprises a box body, a door frame (6), a small feed door (7), a first sealing ring (8), a second sealing ring (9) and a multi-channel valve group (3). The small feed door (7) is arranged on the front side of the box body and is used to open or close the box body. The outer periphery of the front side of the box body is the door frame (6). The first sealing ring (8) and the second sealing ring (9) are both arranged on the door frame (6). A guide groove (1) connected end to end is arranged inside the door frame (6), and the guide groove (1) is located between the first sealing ring (8) and the second sealing ring (9). A plurality of cleaning holes (2) are distributed in the guide groove (1). The guide groove (1) is connected to the cleaning water through the multi-channel valve group (3). The cleaning holes (2) are located on and pass through the front side surface of the door frame (6).

2. The freeze dryer feed door sealing ring cleaning and sterilization device according to claim 1, characterized in that: The cleaning and sterilizing device comprises a first pipeline and a second pipeline, the multi-channel valve group (3) is connected to the guide groove (1) through the first pipeline, and the multi-channel valve group (3) is connected to the box through the second pipeline.

3. The freeze dryer feed door sealing ring cleaning and sterilization device according to claim 1, characterized in that: A first mounting groove (13) and a second mounting groove (14) are provided on the front surface of the door frame (6); the first mounting groove (13) is used to accommodate the installation of a first sealing ring (8); the second mounting groove (14) is used to accommodate the installation of a second sealing ring (9); and the first mounting groove (13) is arranged on the periphery of the second mounting groove (14).

4. The freeze dryer feed door sealing ring cleaning and sterilization device according to claim 1, characterized in that: The first sealing ring (8) is an inflatable sealing ring connected to an inflating device, and the second sealing ring (9) is an O-type vacuum sealing ring.

5. A freeze dryer, characterized in that: The freeze dryer adopts the freeze dryer feed door sealing ring cleaning and sterilization device according to any one of claims 1 to 4.

6. The freeze dryer according to claim 5, characterized in that The freeze dryer also includes a control system, which is used to control the multi-channel valve group (3) and the program of the freeze dryer, wherein the multi-channel valve group (3) includes a first valve (10) and a second valve (11), wherein the first valve (10) is connected to the cleaning water inlet, and the second valve (11) is connected to the condensed water outlet.

7. The freeze dryer according to claim 6, characterized in that During the cleaning phase, the control system controls the first valve (10) to open and the second valve (11) to close, and the cleaning water enters the box body and the guide groove (1) to start flushing; during the steam sterilization phase, the control system controls the second valve (11) to open and the first valve (10) to close, and the steam in the box body passes through the cleaning hole (2), the guide groove (1) and the second valve (11), sterilizes the pipeline passing through, and is then discharged from the condensate outlet.

8. The freeze dryer according to claim 5, characterized in that The freeze dryer comprises a guide plate (4) and a driving device (12). The driving device (12) is connected to a small feeding door (7). The driving device (12) drives the small feeding door (7) to slide and rise in the guide plate (4).

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