Freeze dryer door and freeze dryer

Abstract

The present invention provides a small door for a freeze dryer and a freeze dryer, belonging to the technical field of freeze dryers, comprising an outer frame, a cantilever, a driving mechanism, a small door body and a locking mechanism, wherein the outer frame is used for being fixedly mounted on a small door pad; the cantilever is a long strip structure, and one end of the cantilever is rotatably connected to an inner side wall opposite to the outer frame; the driving mechanism is fixedly arranged on the outer frame and connected to one end of the cantilever, and is used for driving the cantilever to rotate; the small door body is arranged in the outer frame, and the small door body is respectively fixedly connected to the other ends of the two cantilevers, and is used for blocking an opening on the small door pad; the locking mechanism is arranged on the bottom surface of the outer frame, and is used for locking the small door body. The small door for the freeze dryer provided by the present invention, in this way, achieves the purpose of controlling the rotation of the small door body to close the opening on the small door pad by means of the rotation of the cantilever, and uses the locking mechanism to further lock the small door body, thereby simplifying the installation structure of the small door body and improving the sealing effect of the small door body on the freeze dryer.

Description

Technical Field

[0001] The invention belongs to the technical field of freeze dryers, and more specifically, relates to a freeze dryer door and a freeze dryer. Background Art

[0002] In the prior art, the opening and closing of the small door of the freeze dryer is directly in the form of vertical lifting. The small door of the direct lifting form withstands the steam sterilization pressure through a guide clamping plate. The guide clamping plate is locked with a lot of screws. Its structure is complicated to install, and the guide gap cannot be cleaned, which does not meet the requirements for clean rooms. In addition, due to the gap of the guide clamping plate, the small door of the lifting form needs to adopt a double sealing structure of a positive pressure inflatable sealing ring and an O-ring. The inflatable sealing ring has high requirements on the accuracy of the sealing groove and the air source pressure. As long as the accuracy or the air source pressure is not in place, it is easy to cause air leakage. If steam leakage occurs during the sterilization process, it is a safety hazard to the clean room and the operator. The lifting door needs to be processed with double sealing grooves, guide clamping plates and many other processed parts, and the processing cost is very high. Summary of the invention

[0003] The object of the present invention is to provide a freeze dryer door and a freeze dryer, so as to solve the technical problems in the prior art that the freeze dryer door is complicated to install and has poor sealing effect.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a freeze dryer door, comprising:

[0005] An outer frame, used for fixed installation on the small door pad;

[0006] The cantilever is a long strip structure, one end of which is rotatably connected to the inner wall of the outer frame;

[0007] A driving mechanism, fixedly mounted on the outer frame and connected to one end of the cantilever, for driving the cantilever to rotate;

[0008] A small door body is arranged in the outer frame, and the small door body is fixedly connected to the other ends of the two cantilevers respectively, and is used to block the opening on the small door pad;

[0009] The locking mechanism is arranged on the bottom surface of the outer frame and is used for locking the small door body.

[0010] As another embodiment of the present application, there are two cantilevers, which are respectively arranged on two opposite inner walls of the outer frame, and the two cantilevers are fixedly connected by a connecting shaft.

[0011] As another embodiment of the present application, two lifting ears are provided on the small door body, and a lifting shaft is rotatably provided on the other end of the cantilever, and one end of the lifting shaft away from the cantilever is fixedly connected to the lifting ears.

[0012] As another embodiment of the present application, the outer frame is provided with a through hole corresponding to the cantilever, and the driving mechanism includes a motor and a coupling; the motor and the coupling are fixedly arranged on the outer surface of the outer frame and connected to the cantilever through the through hole.

[0013] As another embodiment of the present application, the locking mechanism includes:

[0014] A positioning block, one side of which is provided with a first positioning surface; the small door body is provided with a second positioning surface adapted to the first positioning surface;

[0015] The first linear driver is fixed on the outer frame; the free end of the first linear driver is fixedly connected to the positioning block.

[0016] As another embodiment of the present application, both the first positioning surface and the second positioning surface are inclined surfaces.

[0017] As another embodiment of the present application, a notch is provided at the lower end of the small door body, and the notch has the second positioning surface and a mounting surface for connecting with the upper end surface of the positioning block.

[0018] As another embodiment of the present application, the locking mechanism further includes:

[0019] Two clamping blocks are respectively arranged on two opposite inner side walls of the outer frame and used for clamping the small door body; the clamping blocks are located below the cantilever;

[0020] There are two second linear drivers, both of which are fixed on the outer frame and correspond one-to-one to the two clamping blocks; the free end of each second linear driver is fixedly connected to the corresponding clamping block.

[0021] As another embodiment of the present application, the freeze dryer door further includes:

[0022] The T-shaped sealing ring is used for being installed on the small door pad and being arranged around the opening on the small door pad; the small door pad is provided with a sealing groove which is matched and connected with the T-shaped sealing ring.

[0023] The beneficial effect of the small door of the freeze dryer provided by the present invention is that compared with the prior art, the small door of the freeze dryer of the present invention has an outer frame fixedly connected to the small door pad, and the opening on the small door pad is located in the outer frame. The driving mechanism is started to control the rotation of one end of the cantilever, and then the other end of the cantilever drives the small door body to move downward in the outer frame and close the opening on the small door pad. Finally, the locking mechanism is started to move upward from the bottom of the outer frame and contact the outer side surface of the small door body to achieve the locking of the small door body. In this way, the purpose of controlling the rotation of the small door body to close the opening on the small door pad is achieved by means of the rotation of the cantilever, and the locking mechanism is used to further lock the small door body, which simplifies the installation structure of the small door body and improves the sealing effect of the small door body on the freeze dryer.

[0024] Another object of the present invention is to provide a freeze dryer, comprising any one of the above-mentioned freeze dryer small doors.

[0025] The freeze dryer provided by the present invention adopts a small door for the freeze dryer. Therefore, the purpose of controlling the rotation of the small door body to close the opening on the small door pad is achieved by means of the rotation of the cantilever, and the small door body is further locked by using a locking mechanism, which simplifies the installation structure of the small door body and improves the sealing effect of the small door body on the freeze dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 Schematic diagram of the structure of the freeze dryer door provided in the embodiment of the present invention Figure 1 ;

[0028] Figure 2 Schematic diagram of the structure of the freeze dryer door provided in the embodiment of the present invention Figure 2 ;

[0029] Figure 3 Schematic diagram of the structure of the freeze dryer door provided in the embodiment of the present invention Figure 3 ;

[0030] Figure 4 A cross-sectional view of a small door of a freeze dryer provided in an embodiment of the present invention.

[0031] Among them, the reference numerals in the figure are:

[0032] 1. Outer frame; 11. Coupling; 12. Motor; 2. Cantilever; 21. Connecting shaft; 22. Lifting shaft; 3. Small door body; 31. Lifting ear; 32. Second positioning surface; 33. Notch; 4. Locking mechanism; 41. Positioning block; 411. First positioning surface; 42. First linear drive; 43. Clamping block; 44. Second linear drive; 5. Small door pad; 51. Sealing groove; 52. Pipe connection. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] See also Figures 1 to 4 , the freeze dryer small door provided by the present invention is now described. A freeze dryer small door includes an outer frame 1, a cantilever 2, a driving mechanism, a small door body 3 and a locking mechanism 4. The outer frame 1 is used to be fixedly installed on the small door pad 5; the cantilever 2 is a long strip structure, and one end of the cantilever 2 is rotatably connected to the inner side wall opposite to the outer frame 1; the driving mechanism is fixedly arranged on the outer frame 1 and connected to one end of the cantilever 2, and is used to drive the cantilever 2 to rotate; the small door body 3 is arranged in the outer frame 1, and the small door body 3 is respectively fixedly connected to the other ends of the two cantilevers 2, and is used to block the opening on the small door pad 5; the locking mechanism 4 is arranged on the bottom surface of the outer frame 1, and is used to lock the small door body 3.

[0035] Compared with the prior art, the small door of the freeze dryer provided by the present invention has an outer frame 1 fixedly connected to the small door pad 5, and the opening on the small door pad 5 is located in the outer frame 1. The driving mechanism is started to control the rotation of one end of the cantilever 2, and then the other end of the cantilever 2 drives the small door body 3 to move downward in the outer frame 1 and close the opening on the small door pad 5. Finally, the locking mechanism 4 is started to move upward from the bottom of the outer frame 1 and contact the outer side surface of the small door body 3 to achieve the locking of the small door body 3. In this way, the purpose of controlling the rotation of the small door body 3 to close the opening on the small door pad 5 is achieved by means of the rotation of the cantilever 2, and the locking mechanism 4 is used to further lock the small door body 3, which simplifies the installation structure of the small door body 3 and improves the sealing effect of the small door body 3 on the freeze dryer.

[0036] A small door pipe 52 is provided which is connected to the opening on the small door pad 5. The small door pipe 52 and the outer frame 1 are respectively welded to the back and front of the small door pad 5. After the small door body 3 is rotated and lifted, there is no guide plate on the small door pad 5 to block it, so it is easy to clean and more in line with the cleanliness requirements of GMP.

[0037] See also Figures 1 to 3As a specific embodiment of the freeze dryer door provided by the present invention, there are two cantilevers 2, which are respectively arranged on the two opposite inner side walls of the outer frame 1. The two cantilevers 2 are fixedly connected by a connecting shaft 21. The small door body 3 is a horizontal rectangular parallelepiped structure. The two cantilevers 2 are respectively installed on the two opposite side surfaces of the outer frame 1. After the small door body 3 is installed in the outer frame 1, the other ends of the two cantilevers 2 are respectively connected to the two ends of the small door body 3, so that the two ends of the small door body 3 can be driven to move at the same time, ensuring that the movement of the small door body 3 is more stable. The two cantilevers 2 are fixedly connected as a whole by the connecting shaft 21. Therefore, when a driving mechanism is used to drive one of the cantilevers 2 to rotate, the two cantilevers 2 can be rotated at the same time through the connecting shaft 21, and then the small door body 3 is raised to open the opening on the small door pad 5 or lowered to close the opening on the small door pad 5.

[0038] See also Figures 1 to 4 As a specific embodiment of the freeze dryer small door provided by the present invention, two lifting ears 31 are provided on the small door body 3, and a lifting shaft 22 is rotatably provided on the other end of the cantilever 2, and the lifting shaft 22 is fixedly connected to the lifting ear 31 at one end away from the cantilever 2. Two integrally formed lifting ears 31 are provided on the small door body 3, and are respectively located at the two ends of the upper end surface of the small door body 3. The lifting shaft 22 connected to the other end of the cantilever 2 is rotated, and the axial direction of the lifting shaft 22 is perpendicular to the length direction of the cantilever 2, so as to connect the cantilever 2 and the small door body 3 together. When the driving mechanism is started to control the rotation of the cantilever 2, the other end of the cantilever 2 drives the lifting shaft 22 to translate and rotate upward or downward, thereby opening or closing the opening of the small door body 3. The two ends of the lifting shaft 22 are respectively connected to the cantilever 2 for rotation and fixedly connected to the lifting lug 31. When the cantilever 2 is rotated, the small door body 3 is always in a vertical direction. When the lifting shaft 22 is lifted and lowered along with the cantilever 2, the lifting shaft 22 and the small door body 3 can remain vertical and directly and completely contact the small door pad 5 under the action of their own weight, and then better fit and connect with the small door pad 5, which can ensure better sealing performance of the opening on the small door pad 5. In particular, after the sealing ring is set on the small door pad 5, the small door body 3 is parallel to the small door pad 5 and directly pressed on the sealing ring. The lifting shaft 22 and the lifting lug 31 are connected by screws.

[0039] The running track of the small door body 3 is kept in a vertical direction, which saves the space of the clean room in front of the freeze dryer and shortens the distance of the automatic feeding and discharging device. It is more convenient for the freeze dryer to connect with the automatic feeding and discharging device through the small door body 3.

[0040] See also Figures 1 to 3As a specific embodiment of the freeze dryer small door provided by the present invention, the outer frame 1 is provided with a through hole corresponding to the cantilever 2, and the driving mechanism includes a motor 12 and a coupling 11; the motor 12 and the coupling 11 are fixedly arranged on the outer side of the outer frame 1 and connected to the cantilever 2 through the through hole, the coupling 11 and the motor 12 are fixed on the outer side of the outer frame 1, the cantilever 2 is rotatably connected to the inner side of the outer frame 1, and a transmission part connected to the coupling 11 through the through hole is arranged on one end of the cantilever 2, the motor 12 is started, and the output shaft of the motor 12 drives the transmission part and the cantilever 2 to rotate around the through hole through the coupling 11, thereby realizing the flipping and lifting of the small door body 3. By using the coupling 11 to realize the driving of the cantilever 2 by the motor 12, the rotation of the cantilever 2 can be made more stable, the vibration in the transmission process can be reduced, and the noise can also be reduced.

[0041] See also Figures 1 to 4 As a specific embodiment of the freeze dryer small door provided by the present invention, the locking mechanism 4 includes a positioning block 41 and a first linear driver 42. A first positioning surface 411 is provided on one side of the positioning block 41; a second positioning surface 32 adapted to the first positioning surface 411 is provided on the small door body 3; the first linear driver 42 is fixedly arranged on the outer frame 1; the free end of the first linear driver 42 is fixedly connected to the positioning block 41. After the driving mechanism moves the small door body 3 to close the opening on the small door pad 5 by means of the cantilever 2, the first linear driver 42 is started to control the positioning block 41 to move upward, so that the first positioning surface 411 on the positioning block 41 is adapted to be spliced ​​with the second positioning surface 32 of the small door body 3, so as to limit the small door body 3 and prevent the small door body 3 from moving. In this way, the stability of the small door body 3 can be further ensured, and the sealing effect of the freeze dryer small door can be improved. A connecting hole is provided on the side surface set on the outer frame 1, and the positioning block 41 is slidably matched with the connecting hole. The first linear driver 42 can be an electric push rod or a cylinder. The positioning block 41 and the first linear drive 42 are both provided in plurality and evenly distributed on the bottom surface of the outer frame 1, and are used to jointly limit and fix the small door body 3. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] See also Figure 3 and Figure 4As a specific embodiment of the freeze dryer door provided by the present invention, the first positioning surface 411 and the second positioning surface 32 are both inclined surfaces. With the help of the two inclined surfaces being spliced ​​together, it is convenient for the positioning block 41 to move up and make the first positioning surface 411 slide along the second positioning surface 32, so that the positioning block 41 can be tilted downward by the force from the small door body 3; and the inclined surface also reduces the volume of the two, and will not increase the space occupied by the positioning block 41 and the small door body 3 when installed together.

[0043] See also Figure 3 and Figure 4 As a specific embodiment of the freeze dryer small door provided by the present invention, a notch 33 is provided at the lower end of the small door body 3, and the notch 33 has a second positioning surface 32 and a mounting surface for connecting with the upper end surface of the positioning block 41, and the second positioning surface 32 is arranged on the vertical surface of the notch 33. When the positioning block 41 moves upward, so that the first positioning surface 411 and the second positioning surface 32 are adapted and installed together, the upper end surface of the positioning block 41 abuts against the horizontal top surface of the notch 33, and the positioning block 41 occupies the position of the notch 33, so as to realize the limited fixation of the small door body 3. The upper end surface of the positioning block 41 is arranged to be inclined upward from the inside to the outside, and in the process of moving on the positioning block 41, it acts on the small door body 3 again, so that the small door body 3 more tightly closes the opening of the small door pad 5. This form ensures that steam will not leak during sterilization, and ensures the safety of personnel and clean rooms. The clamping method of the cylinder-driven positioning block 41 is simple to control and easy to maintain. The positioning block 41 can adopt a latch, and the positioning surface is arranged on the outer side of the latch.

[0044] See also Figures 1 to 3 As a specific embodiment of the freeze dryer small door provided by the present invention, the locking mechanism 4 also includes a clamping block 43 and a second linear driver 44. There are two clamping blocks 43, which are respectively arranged on the two opposite inner side walls of the outer frame 1, and are used to clamp the small door body 3; the clamping block 43 is located below the cantilever 2; there are two second linear drivers 44, which are fixedly arranged on the outer frame 1 and correspond to the two clamping blocks 43 one by one; the free end of each second linear driver 44 is fixedly connected to the corresponding clamping block 43, and the two second linear drivers 44 are started to control the two clamping blocks to move toward the small door body 3 on both sides of the small door body 3, thereby achieving the clamping and positioning of the small door body 3, and further improving the stability of the small door body 3. A connecting hole is provided on the side surface set on the outer frame 1, and the clamping block is slidably matched with the connecting hole. The first linear driver 42 can be an electric push rod or a cylinder.

[0045] See also Figure 4As a specific embodiment of the freeze dryer small door provided by the present invention, the freeze dryer small door also includes a T-shaped sealing ring, which is used to be installed on the small door pad 5 and arranged around the opening on the small door pad 5; the small door pad 5 is provided with a sealing groove 51 that cooperates with the T-shaped sealing ring, and a sealing groove 51 surrounding the opening is opened on the small door pad 5, and a T-shaped sealing ring is installed in the sealing groove 51. When the cantilever 2 is driven to rotate by the driving mechanism, and then the small door body 3 is driven to move down and close the opening on the small door pad 5, the small door body 3 is pressed on the T-shaped sealing ring, thereby achieving a good seal on the opening of the small door pad 5. The use of the T-shaped sealing ring can still fully contact with the inner wall of the sealing groove 51 under the extrusion of the small door body 3, maintain its stability, and ensure that the sealing is not lost. The T-shaped sealing ring has a simple structure and the sealing groove 51 is easy to process. Due to the large contact area and good sealing performance, it is beneficial for the freeze dryer to achieve vacuum performance indicators and does not need to be connected to compressed air separately. This T-shaped sealing ring is the same as the freeze dryer door sealing ring and does not need to be processed separately, saving a lot of costs.

[0046] The small door of the freeze dryer also includes a signal switch device, which includes an adjusting bracket, a signal switch, a sleeve and a signal plate. There are two adjusting brackets, which are arranged opposite to each other and are respectively used to be fixed on the small door pad; the two adjusting brackets are used to be installed on both sides of the small door rotating shaft; there are two signal switches, which are respectively fixed on the two adjusting brackets; the two signal switches are located between the two adjusting brackets; the sleeve is used to be sleeved on the small door rotating shaft and fixedly connected to the small door rotating shaft; the signal plate is fixed on the outer surface of the sleeve. When in use, two adjustment brackets are pre-fixed on the small door pad and located on both sides of the small door rotating shaft, and then two signal switches are fixed on the two adjustment brackets respectively and correspondingly; then the sleeve is put on the small door rotating shaft, and the signal plate is fixed on the outer side of the sleeve; when the staff opens the small door of the freeze dryer, after the small door is fully opened, the sleeve and the signal plate rotate with the small door rotating shaft, so that the signal plate contacts with one signal switch and sends a signal, and when the staff closes the small door of the freeze dryer, after the small door is fully closed, the sleeve and the signal plate rotate in the opposite direction with the small door rotating shaft, so that the signal plate contacts with another signal switch and sends a signal, the rotation of the small door corresponds to the two signal switches with the help of the small door rotating shaft, the sleeve and the signal plate, and the signal switch sends a signal to determine the opening and closing state of the small door. In this way, the installation steps of the signal switch are reduced, and the adjustment bracket and the signal switch are both located on the small door pad, which does not affect the appearance of the entire small door.

[0047] Not shown in the figures, an embodiment of the present invention further provides a freeze dryer, which includes any one of the above-mentioned freeze dryer doors.

[0048] The freeze dryer provided by the present invention adopts the above-mentioned freeze dryer small door. Therefore, the purpose of controlling the rotation of the small door body 3 to close the opening on the small door pad 5 is achieved by rotating the cantilever 2, and the small door body 3 is further locked by using the locking mechanism 4, which simplifies the installation structure of the small door body 3 and improves the sealing effect of the small door body 3 on the freeze dryer.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The freeze dryer door is characterized by: include An outer frame, used for fixed installation on the small door pad; The cantilever is a long strip structure, one end of which is rotatably connected to the inner wall of the outer frame; A driving mechanism, fixedly mounted on the outer frame and connected to one end of the cantilever, for driving the cantilever to rotate; A small door body is arranged in the outer frame, and the small door body is fixedly connected to the other ends of the two cantilevers respectively, and is used to block the opening on the small door pad; A locking mechanism, disposed on the bottom surface of the outer frame, for locking the small door body; There are two cantilevers, which are respectively arranged on the two inner side walls opposite to each other of the outer frame, and the two cantilevers are fixedly connected by a connecting shaft; two lifting ears are arranged on the small door body, and a lifting shaft is rotatably arranged on the other end of the cantilever, and the end of the lifting shaft away from the cantilever is fixedly connected to the lifting ear; the axial direction of the lifting shaft is perpendicular to the length direction of the cantilever, and the driving mechanism is started to control the rotation of the cantilever, and the other end of the cantilever drives the lifting shaft to translate and rotate upward or downward, thereby opening or closing the opening of the small door body; the small door body is always in a vertical direction; The locking mechanism includes a positioning block and a first linear drive, a first positioning surface is provided on one side of the positioning block; a second positioning surface matched with the first positioning surface is provided on the small door body; the first linear drive is fixed on the outer frame; the free end of the first linear drive is fixedly connected to the positioning block, and after the driving mechanism moves the small door body with the help of a cantilever to close the opening on the small door pad, the first linear drive is started to control the positioning block to move upward, so that the first positioning surface on the positioning block is matched and assembled with the second positioning surface of the small door body; the first positioning surface and the second positioning surface are both inclined surfaces.

2. The freeze dryer door according to claim 1, characterized in that: The outer frame is provided with a through hole corresponding to the cantilever, and the driving mechanism includes a motor and a coupling; the motor and the coupling are fixedly arranged on the outer side of the outer frame and pass through the through hole to be connected with the cantilever.

3. The freeze dryer door according to claim 1, characterized in that: A notch is provided at the lower end of the small door body, and the notch has the second positioning surface and a mounting surface for connecting with the upper end surface of the positioning block.

4. The freeze dryer door according to claim 1, characterized in that: The locking mechanism also includes: Two clamping blocks are respectively arranged on two opposite inner side walls of the outer frame and used for clamping the small door body; the clamping blocks are located below the cantilever; There are two second linear drivers, both of which are fixed on the outer frame and correspond one-to-one to the two clamping blocks; the free end of each second linear driver is fixedly connected to the corresponding clamping block.

5. The freeze dryer door according to claim 1, characterized in that: The freeze dryer door also includes: The T-shaped sealing ring is used for being installed on the small door pad and being arranged around the opening on the small door pad; the small door pad is provided with a sealing groove which is matched and connected with the T-shaped sealing ring.

6. A freeze dryer, characterized in that It comprises the freeze dryer door as described in any one of claims 1 to 5.

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