A box door sealing device for a vacuum freeze dryer

Abstract

The utility model relates to a box door sealing device of vacuum freeze drying machine, including machine body and box door, one side of box door is hinged with machine body, the back portion fixed mounting of box door has the sealing ring, the size of sealing ring is same with the inside size of machine body, the back portion mounting of box door has the support assembly convenient for supporting sealing ring, support assembly includes four and sealing ring four sides corresponding resistance board, one side mounting of machine body has the fixed component convenient for fixing box door. The utility model discloses through the setting of support assembly, can make four resistance boards synchronous and evenly move to sealing ring, ensure that sealing ring can tightly adhere to the opening of machine body in each direction, effectively avoid the problem of not tight sealing because of local support shortage, solve the problem that the existing device needs to rotate two turbine discs to make both sides pressure plate support sealing ring, and the efficiency is lower, and only to the both sides of sealing ring support, the effect is poor, influence sealing effect.

Description

Technical Field

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

[0002] Vacuum freeze-drying technology is a process that removes moisture from materials by sublimation under low temperature and vacuum conditions. Because it can preserve the bioactivity, nutrients, and original structure of materials to the greatest extent, it is widely used in biopharmaceuticals, food processing, materials science, and other fields. During vacuum freeze-drying, the airtightness of the equipment is one of the key factors in ensuring drying effect and product quality. The door, as the main component connecting the equipment to the outside world, directly affects the vacuum level and operational stability inside the equipment.

[0003] A search revealed that Chinese Patent CN216282364U discloses a door sealing device for a vacuum freeze dryer, comprising a door, end plates symmetrically fixed on the left and right outer sides of the door, ear seats fixed on the end plates, one end of the ear seats being rotatably connected to a drive push rod, the other end of the drive push rod being fixed to a positioning shaft, and a hinge installed between the bottom side of the door and the vacuum freeze dryer; an anti-collapse component is installed on the inner side of the door within a rectangular sealing ring, the anti-collapse component comprising a worm gear, a transmission rod, a movable pressure sleeve, a pressure plate, and a handwheel, the handwheel being fixedly connected to the worm gear through a shaft passing through the door.

[0004] In actual use, this patent has the following drawbacks:

[0005] The anti-collapse component in this patent requires rotating two turbine disks to enable the pressure plates on both sides to support the sealing ring, which is inefficient and only supports the two sides of the rectangular sealing ring, resulting in poor performance and affecting the sealing effect. Utility Model Content

[0006] In view of the technical problems in the prior art, which requires rotating two turbine disks to support the pressure plates on both sides, resulting in low efficiency and poor effect due to only supporting the two sides of the rectangular sealing ring, this utility model provides a door sealing device for a vacuum freeze dryer.

[0007] The technical solution adopted in this utility model is: a door sealing device for a vacuum freeze dryer, including a machine body and a door. One side of the door is hinged to the machine body, and a sealing ring is fixedly installed on the back of the door. The size of the sealing ring is the same as the internal size of the machine body. A support component is installed on the back of the door to facilitate support of the sealing ring. The support component includes four abutments corresponding to the four sides of the sealing ring. A fixing component is installed on one side of the machine body to facilitate fixing the door. Through the setting of the support component, the four abutments can move towards the sealing ring synchronously and evenly, thereby providing comprehensive and balanced support force to the sealing ring, ensuring that the sealing ring can tightly fit the opening of the machine body in all directions, effectively avoiding the problem of poor sealing caused by insufficient local support. Through the setting of the fixing component, the door can be quickly locked, improving the operating efficiency of the equipment and reducing the waiting time of the operator.

[0008] Furthermore, a first bevel gear is rotatably connected to the back of the door, and second bevel gears mesh with both sides of the first bevel gear. A threaded rod is fixedly installed on one side of each of the two second bevel gears. Two symmetrical fixing plates are fixedly installed on the back of the door. One end of each threaded rod is rotatably connected to one side of each fixing plate via a bearing seat. A connecting frame is threaded onto the surface of each threaded rod, and one end of each connecting frame is fixedly connected to the back of the left and right abutment plates. Through the engagement of the first and second bevel gears, the left and right abutment plates move simultaneously, supporting the left and right sides of the sealing ring and improving the sealing performance of the sealing ring.

[0009] Furthermore, hinge rods are hinged to the upper and lower sides of both connecting frames. The two hinge rods on the same side are respectively hinged to one side of the upper and lower abutment plates. By setting the hinge rods, the linear movement of the left and right abutment plates is converted into the synchronous movement of the upper and lower abutment plates, so as to achieve uniform support on all four sides of the sealing ring.

[0010] Furthermore, the back of the box door is provided with four sliding grooves that match the length of the four abutments. The four abutments are slidably connected to the four sliding grooves respectively. The sliding grooves ensure that the abutments move in a straight line and avoid uneven sealing caused by misalignment.

[0011] Furthermore, a knob is provided on the front of the box door, which is fixedly connected to the first bevel gear. The external knob design allows the backing plate to be adjusted even when the box door is closed, ensuring its sealing performance.

[0012] Furthermore, the fixing component includes an electric push rod fixedly installed on one side of the machine body, a snap-fit ​​rod fixedly installed at the bottom of the electric push rod, a fixing block fixedly installed on one side of the door, and a slot that matches the snap-fit ​​rod on the upper surface of the fixing block. The electric push rod drives the snap-fit ​​rod to snap into the slot, thereby fixing the machine body to the door.

[0013] The beneficial effects of this utility model are:

[0014] This invention, through the setting of the support components, enables the four abutment plates to move synchronously and evenly toward the sealing ring, thereby providing comprehensive and balanced support for the sealing ring. This ensures that the sealing ring can tightly fit the opening of the machine body in all directions, effectively avoiding the problem of poor sealing caused by insufficient local support. It also solves the problems of existing devices that require rotating two turbine disks to support the pressure plates on both sides, resulting in low efficiency and poor effect due to only supporting the two sides of the rectangular sealing ring, thus affecting the sealing effect. Attached Figure Description

[0015] Figure 1 This is an overall drawing of the present invention;

[0016] Figure 2 This is a front view of the back of the box door of this utility model;

[0017] Figure 3 This is a view of the fixed component of this utility model.

[0018] The components in the diagram are labeled as follows: 1. Body; 2. Door; 3. Sealing ring; 4. Support assembly; 401. Backing plate; 402. First bevel gear; 403. Second bevel gear; 404. Threaded rod; 405. Fixing plate; 406. Connecting frame; 407. Hinge rod; 408. Slide groove; 409. Knob; 5. Fixing assembly; 501. Electric push rod; 502. Snap-fit ​​rod; 503. Fixing block; 504. Snap-fit ​​groove. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following is in conjunction with the appendix Figures 1-3 The present invention will be further described below.

[0022] In order to solve the problems existing in the background art, this application proposes the following technical solution: a door sealing device for a vacuum freeze dryer.

[0023] The specific technical solution includes a body 1 and a door 2. One side of the door 2 is hinged to the body 1. A sealing ring 3 is fixedly installed on the back of the door 2. The size of the sealing ring 3 is the same as the internal size of the body 1. A support component 4 is installed on the back of the door 2 to facilitate support of the sealing ring 3. The support component 4 includes four abutments 401 corresponding to the four sides of the sealing ring 3. A fixing component 5 is installed on one side of the body 1 to facilitate fixing the door 2. Through the setting of the support component 4, the four abutments 401 can move towards the sealing ring 3 synchronously and evenly, thereby providing comprehensive and balanced support force to the sealing ring 3. This ensures that the sealing ring 3 can tightly fit the opening of the body 1 in all directions, effectively avoiding the problem of poor sealing caused by insufficient local support. The setting of the fixing component 5 enables the door 2 to be locked quickly, improving the operating efficiency of the equipment and reducing the waiting time of the operator.

[0024] Reference Figure 1 and Figure 2As shown, a first bevel gear 402 is rotatably connected to the back of the door 2. Second bevel gears 403 mesh with the left and right surfaces of the first bevel gear 402. Threaded rods 404 are fixedly installed on one side of each of the two second bevel gears 403. Two symmetrical fixing plates 405 are fixedly installed on the back of the door 2. One end of each threaded rod 404 is rotatably connected to one side of each fixing plate 405 via bearing seats. Connecting frames 406 are threaded onto the surfaces of each threaded rod 404. One end of each connecting frame 406 is connected to the back of the left and right abutment plates 401. The two connecting frames 406 are fixedly connected, with hinge rods 407 hinged to both the upper and lower sides. The two hinge rods 407 on the same side are respectively hinged to one side of the upper and lower side abutment plates 401. The back of the door 2 has four sliding grooves 408 that match the length of the four abutment plates 401. The four abutment plates 401 are slidably connected to the four sliding grooves 408. A knob 409 is provided on the front of the door 2, and the knob 409 is fixedly connected to the first bevel gear 402. By rotating the knob 409 on the front of the door 2, the knob 409 drives the first bevel gear 402 to rotate. The first bevel gear 402 meshes with the second bevel gears 403 on the left and right sides, causing the second bevel gears 403 to rotate, which in turn drives the threaded rod 404 to rotate. Since the threaded rod 404 is threadedly connected to the connecting frame 406, and one end of the connecting frame 406 is fixedly connected to the abutment plate 401, while the abutment plate 401 is slidably connected to the slide groove 408 on the back of the door 2, the rotation of the threaded rod 404 will cause the connecting frame 406 to move along the axial direction of the threaded rod 404, thereby pushing the abutment plates 401 on both sides to move towards the sealing ring 3. While the connecting frame 406 moves, the hinge rods 407 on its upper and lower sides drive the abutment plates 401 on both sides to slide in the slide groove 408 opened on the back of the door 2. Therefore, the four abutment plates 401 move towards the four sides of the sealing ring 3 respectively and support the sealing ring 3, so that the sealing ring 3 fits tightly between the door 2 and the body 1, thereby achieving a good sealing effect.

[0025] Reference Figure 1 and Figure 3 As shown, the fixing component 5 includes an electric push rod 501 fixedly installed on one side of the body 1. A snap-fit ​​rod 502 is fixedly installed at the bottom of the electric push rod 501. A fixing block 503 is fixedly installed on one side of the door 2. The upper surface of the fixing block 503 has a slot 504 that matches the snap-fit ​​rod 502. The electric push rod 501 pushes the snap-fit ​​rod 502 downward, and the snap-fit ​​rod 502 snaps into the slot 504 on the fixing block 503 on the side of the door 2, fixing the door 2 to the body 1, and further ensuring the sealing between the door 2 and the body 1.

[0026] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:

[0027] When in use, close the door (2), start the electric push rod 501 on the side of the machine body 1, drive the locking rod 502 to move downward, and insert the locking rod 502 into the slot 504 of the fixing block 503 on the side of the door 2 to complete the mechanical locking. Then turn the knob 409 on the front of the door 2 to drive the first bevel gear 402 to rotate. The first bevel gear 402 drives the second bevel gears 403 on the left and right sides to rotate synchronously through meshing transmission. The second bevel gear 403 drives the threaded rod 404 to rotate, driving the threaded connecting frame 406 to move along the threaded rod 404. The connecting frames 406 on the left and right sides push the corresponding abutment 401 to slide along the slide groove 408 towards the sealing ring 3. When the connecting frame 406 moves, the hinge rod 407 pulls the upper and lower abutment 401 to slide synchronously towards the sealing ring 3. The four abutment 401 support the sealing ring 3 synchronously from the four sides, so that it fits tightly against the opening edge of the machine body 1 until the knob 409 can no longer be turned.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A door sealing device for a vacuum freeze dryer, characterized in that, The device includes a body (1) and a door (2). One side of the door (2) is hinged to the body (1). A sealing ring (3) is fixedly installed on the back of the door (2). The size of the sealing ring (3) is the same as the internal size of the body (1). A support component (4) is installed on the back of the door (2) to facilitate support of the sealing ring (3). The support component (4) includes four abutments (401) corresponding to the four sides of the sealing ring (3). A fixing component (5) is installed on one side of the body (1) to facilitate fixing the door (2).

2. The door sealing device of a vacuum freeze dryer according to claim 1, characterized in that, The back of the box door (2) is rotatably connected to a first bevel gear (402). The left and right surfaces of the first bevel gear (402) are meshed with second bevel gears (403). A threaded rod (404) is fixedly installed on one side of each of the two second bevel gears (403). Two symmetrical fixing plates (405) are fixedly installed on the back of the box door (2). One end of each of the two threaded rods (404) is rotatably connected to one side of each of the two fixing plates (405) through a bearing seat. A connecting frame (406) is threadedly connected to the surface of each of the two threaded rods (404). One end of each of the two connecting frames (406) is fixedly connected to the back of the left and right abutment plates (401).

3. The door sealing device of a vacuum freeze dryer according to claim 2, characterized in that, The two connecting frames (406) are hinged to the upper and lower sides with hinge rods (407), and the two hinge rods (407) on the same side are respectively hinged to one side surface of the upper and lower abutment plates (401).

4. The door sealing device of a vacuum freeze dryer according to claim 1, characterized in that, The back of the box door (2) is provided with four grooves (408) that match the length of the four abutments (401), and the four abutments (401) are slidably connected to the four grooves (408) respectively.

5. The door sealing device of a vacuum freeze dryer according to claim 2, characterized in that, A knob (409) is provided on the front of the box door (2), and the knob (409) is fixedly connected to the first bevel gear (402).

6. The door sealing device of a vacuum freeze dryer according to claim 1, characterized in that, The fixing component (5) includes an electric push rod (501) fixedly installed on one side of the body (1), a snap-fit ​​rod (502) fixedly installed at the bottom of the electric push rod (501), a fixing block (503) fixedly installed on one side of the door (2), and a slot (504) that matches the snap-fit ​​rod (502) is opened on the upper surface of the fixing block (503).

Images