Freeze dryer and sliding door mechanism thereof

Abstract

The utility model discloses a freeze dryer and a sliding door mechanism thereof, which relates to the technical field of freeze dryers and comprises a flange (17) mounted at a doorway, a door guide rail component (3) mounted above the doorway, a pulley trolley (5) mounted on the door guide rail component (3) and capable of moving along the door guide rail component (3), and a box door (1) matched with the flange (17) and used for sealing an opening of the flange (17). The axis direction of the door guide rail assembly (3) is perpendicular to the center line of the flange (17). The two ends of the position adjusting device are connected with the pulley trolley (5) and the box door (1) respectively, and the position adjusting device is used for adjusting the left-right distance, the front-back distance and the up-down distance between the box door (1) and the flange (17). The sliding door mechanism reduces the occupied space after the door is opened, and can avoid interference with a feeding and discharging guide rail when the door is opened. The utility model further discloses the freeze dryer comprising the sliding door mechanism, and the beneficial effects of the freeze dryer are the same as those of the sliding door mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze dryers, in particular to a freeze dryer and a translational sliding door mechanism thereof. Background Art

[0002] A freeze dryer is a type of production equipment that can freeze-dry items and is widely used in the fields of medicine, biological products, food, blood products, active substances, etc.

[0003] Freeze drying is a drying technology that uses the principle of sublimation. It is a process in which the substance to be dried is quickly frozen at low temperature, and then in a suitable vacuum environment, the frozen water molecules are directly sublimated into water vapor and escape. The product obtained by freeze drying is called lyophilized material, and the process is called freeze drying. The substance is always at a low temperature (frozen state) before drying, and the ice crystals are evenly distributed in the substance. The sublimation process will not be concentrated due to dehydration, avoiding side effects such as foaming and oxidation caused by water vapor.

[0004] Traditional freeze dryers use a swing door method, that is, the door hinge (similar to a hinge) is at one end of the door to achieve swing door opening. Since the swing door takes up a large space and the operation remains unchanged, large freeze dryers are generally equipped with discharge guide rails. The swinging process will interfere with the feed and discharge guide rails. The swing door is not suitable for freeze dryers that use matching guide rails.

[0005] In summary, how to effectively solve the problem that it is difficult to use the swing door with the feed and discharge guide rails is an urgent problem that technicians in this field need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide a sliding door mechanism, which reduces the occupied space after the door is opened and can avoid interference with the feed and discharge guide rails when opened; another purpose of the utility model is to provide a freeze dryer including the above-mentioned sliding door mechanism, and its beneficial effects are the same as those of the sliding door mechanism.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A sliding door mechanism comprises a flange installed at a doorway, a door guide rail assembly installed above the doorway, a pulley trolley installed on the door guide rail assembly and capable of moving along the door, and a box door adapted to the flange for closing the flange opening, wherein the axial direction of the door guide rail assembly is perpendicular to the center line of the flange; and also comprises a position adjustment device whose two ends are respectively connected to the pulley trolley and the box door and used for adjusting the left-right distance, front-back distance, and up-down distance between the box door and the flange.

[0009] Preferably, the position adjustment device comprises:

[0010] A travel switch for detecting that the box door closes the flange opening;

[0011] A moving mechanism connected to the travel switch and used to control the box door to stop moving along the door guide rail assembly when receiving a door closing signal from the travel switch.

[0012] Preferably, the position adjustment device comprises:

[0013] Distance sensors are arranged at multiple positions on the front of the flange and are used to detect the distance from the box door to the flange;

[0014] A driving mechanism connected to the distance sensor is used to control the box door to move toward the flange and fit onto the flange when the distances from the box door to each position of the flange are equal.

[0015] Preferably, the position adjustment device further comprises:

[0016] An alarm mechanism connected to the distance sensor is used to remind the user to adjust the angle between the door and the flange when the distance values ​​of the distance sensors at different positions are not equal.

[0017] Preferably, the position adjustment device comprises:

[0018] A fixed sensor for detecting the height of the flange apex;

[0019] A height sensor for detecting the height of the top of the door;

[0020] A lifting mechanism connected to the fixed sensor and the height sensor, and used for adjusting the height of the top of the door to the height of the top of the flange when the height of the top of the door is not equal to the height of the top of the flange.

[0021] Preferably, the position adjustment device includes an adapter shaft connected to the connecting plate of the pulley trolley, an upper adjustment ring rotatably connected to the adapter shaft, a lower adjustment ring rotatably connected to the box door, and a connecting pin connected between the upper adjustment ring and the lower adjustment ring. The direction of the rotation axis of the pulley trolley and the upper adjustment ring and the direction of the rotation axis of the box door and the lower adjustment ring are the same as the direction of the door guide rail assembly.

[0022] Preferably, the upper adjusting ring is sleeved and connected to the upper end of the connecting pin shaft, and the sleeve depth is adjustable; the lower adjusting ring is sleeved and connected to the lower end of the connecting pin shaft, and the sleeve depth is adjustable.

[0023] Preferably, the lower end of the upper adjusting ring and the upper end of the lower adjusting ring both have threaded holes, the connecting pin is a threaded rod, and the two ends of the connecting pin are respectively threadedly connected to the lower end of the upper adjusting ring and the upper end of the lower adjusting ring;

[0024] At least two locking nuts are connected to the middle of the connecting pin shaft, and the end faces of the at least two locking nuts are respectively in contact with the lower end face of the upper adjusting ring and the upper end face of the lower adjusting ring.

[0025] Preferably, it also includes a support assembly connected to the upper side wall of the flange and hoisted above the door guide rail assembly, the upper part of the door guide rail assembly is connected to the support assembly by a bolt member, the hole of the support assembly is an elongated hole, the length direction of the elongated hole is perpendicular to the length direction of the door guide rail assembly, and the bolt member can move along the length direction of the elongated hole.

[0026] The utility model also provides a freeze dryer, comprising a translation door mechanism, wherein the translation door mechanism is specifically the translation door mechanism described in any one of the above items.

[0027] The sliding door mechanism provided by the utility model comprises a flange, a door guide assembly, a pulley trolley and a door, wherein the flange is installed at the door of the freeze dryer, the door and the flange opening are adapted in shape and size, and the door can just close the flange opening. The door guide assembly is installed above the door, and the axial direction of the door guide assembly is perpendicular to the center line of the flange, that is, the length direction of the door guide assembly is parallel to the flange plane, and the length direction of the door guide assembly is along the horizontal direction.

[0028] The pulley trolley is installed on the door guide rail assembly. The pulley trolley can move along the length direction of the door guide rail assembly. The sliding stroke of the pulley trolley along the door guide rail assembly covers twice the length of the flange opening, ensuring that the box door can close the flange opening and can completely leave the flange opening, that is, the movement stroke of the box door can completely open the flange opening.

[0029] The upper end of the position adjustment device is connected to the pulley trolley, and the lower end is connected to the box door. The position adjustment device can adjust the left and right position, front and back position, and up and down height position of the box door relative to the flange, thereby controlling the left and right distance, front and back distance, and up and down distance between the box door and the flange, ensuring that the box door and the flange are fully fitted and tightly matched.

[0030] The sliding door mechanism provided by the utility model can realize the sliding door opening action in the door guide rail assembly under the driving force. When loading, the box door is opened to the door opening position, the outer guide rail is connected with the inner guide rail of the door, and the overall feeding starts. After the feeding is completed, the outer guide rail is separated from the inner guide rail of the door, and the box door is closed to the door closing position. The operation is simple and the space is small. The pulley trolley and the door guide rail assembly roll and move, reducing the friction caused by the movement. The left and right position, front and back position, and up and down height position of the box door relative to the flange can be adjusted to realize the left and right distance, front and back distance, and up and down distance between the box door and the flange, ensuring that the box door and the flange are completely fitted and tightly matched.

[0031] The utility model also provides a freeze dryer, comprising a sliding door mechanism, which is specifically any of the above sliding door mechanisms. Since the above sliding door mechanism has the above technical effects, the freeze dryer having the sliding door mechanism should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a sliding door mechanism provided in a specific implementation manner of the utility model;

[0034] Figure 2 for Figure 1 Side view of

[0035] Figure 3 for Figure 1 A partial enlarged view of point D in the middle.

[0036] The following are marked in the accompanying drawings:

[0037] 1-box door, 2-support assembly, 3-door guide rail assembly, 4-bolt, 5-pulley trolley, 6-adapter shaft, 7-connecting pin, 8-base assembly, 9-upper adjusting ring, 10-lower adjusting ring, 11-locking nut, 12-adjusting bolt, 13-handwheel, 14-travel switch, 15-connecting bolt, 16-sealing ring, 17-flange. DETAILED DESCRIPTION

[0038] The core of the utility model is to provide a sliding door mechanism, which reduces the occupied space after the door is opened and can avoid interference with the feed and discharge guide rails when opened; another purpose of the utility model is to provide a freeze dryer including the above-mentioned sliding door mechanism, and its beneficial effects are the same as those of the sliding door mechanism.

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a sliding door mechanism provided in a specific implementation manner of the utility model; Figure 2 for Figure 1 Side view of Figure 3 for Figure 1 A partial enlarged view of point D in the middle.

[0041] In a specific embodiment, the sliding door mechanism provided by the utility model includes a flange 17 installed at the doorway, a door guide rail assembly 3 installed above the doorway, a pulley trolley 5 installed on the door guide rail assembly 3 and capable of moving along the door 1, and a box door 1 adapted to the flange 17 for closing the opening of the flange 17, wherein the axial direction of the door guide rail assembly 3 is perpendicular to the center line of the flange 17; and also includes a position adjustment device whose two ends are respectively connected to the pulley trolley 5 and the box door 1, for adjusting the left-right distance, front-back distance, and up-and-down distance between the box door 1 and the flange 17.

[0042] In the above structure, the sliding door mechanism includes a flange 17, a door guide rail assembly 3, a pulley trolley 5 and a door 1. The flange 17 is installed at the door of the freeze dryer. The shape and size of the door 1 are adapted to the opening of the flange 17, and the door 1 can just close the opening of the flange 17.

[0043] The door guide assembly 3 is installed above the door opening, and the axial direction of the door guide assembly 3 is perpendicular to the center line of the flange 17, that is, the length direction of the door guide assembly 3 is parallel to the plane of the flange 17, and the length direction of the door guide assembly 3 is along the horizontal direction.

[0044] The pulley trolley 5 is installed on the door guide rail assembly 3. Optionally, the door guide rail assembly 3 is an I-beam, and the pulley trolley 5 includes two pulleys, which are respectively installed on the bottom surfaces of both sides of the I-beam. The pulley trolley 5 can move along the length direction of the door guide rail assembly 3. The sliding stroke of the pulley trolley 5 along the door guide rail assembly 3 covers twice the length of the flange 17 opening, ensuring that the box door 1 can close the flange 17 opening and can completely leave the flange 17 opening, that is, the movement stroke of the box door 1 can completely open the flange 17 opening.

[0045] The upper end of the position adjustment device is connected to the pulley trolley 5, and the lower end is connected to the box door 1. The position adjustment device can adjust the left and right position, front and back position, and up and down height position of the box door 1 relative to the flange 17, thereby controlling the left and right distance, front and back distance, and up and down distance between the box door 1 and the flange 17 to ensure that the box door 1 and the flange 17 are fully fitted and tightly matched.

[0046] The sliding door mechanism provided by the utility model is that the box door 1 can realize the translational door opening action in the door guide rail assembly 3 under the drive of power. When loading, the box door 1 is opened to the door opening position, the outer guide rail is connected with the inner guide rail of the door, and the overall feeding starts. After the feeding is completed, the outer guide rail is separated from the inner guide rail of the door, and the box door 1 is closed to the door closing position. The operation is simple and the space is small; the pulley trolley 5 rolls with the door guide rail assembly 3 to reduce the friction caused by the movement; the left and right position, front and back position, and up and down height position of the box door 1 relative to the flange 17 can be adjusted to achieve the left and right distance, front and back distance, and up and down distance between the box door 1 and the flange 17, ensuring that the box door 1 and the flange 17 are completely fitted and tightly matched.

[0047] Based on the above specific embodiment, the position adjustment device includes:

[0048] A travel switch 14 for detecting whether the door 1 closes the opening of the flange 17;

[0049] A moving mechanism connected to the travel switch 14 and used to control the box door 1 to stop moving along the door guide assembly 3 when receiving the door closing signal from the travel switch 14.

[0050] In a specific embodiment, the position adjustment device includes a travel switch 14 and a moving mechanism. The travel switch 14 can be installed on the door guide rail assembly 3, and the travel switch 14 is triggered when the pulley trolley 5 moves along the door guide rail assembly 3. The position where the pulley trolley 5 triggers the travel switch 14 coincides with the position where the door 1 closes the opening of the flange 17. When the pulley trolley 5 triggers the travel switch 14, it means that the door 1 just closes the opening of the flange 17.

[0051] The moving mechanism is connected to the travel switch 14. The travel switch 14 detects the signal that the door 1 closes the flange 17 and sends the door closing signal to the moving mechanism. After receiving the door closing signal from the travel switch 14, the moving mechanism controls the door 1 to stop moving along the door guide assembly 3, so that the door 1 and the left and right positions of the flange 17 are aligned, and the lateral position of the door 1 is adjusted to the right position. At this time, the hand wheel 13 is manually locked to fit the door 1 and the flange 17 together to complete the closing action of the door 1. After the door 1 is closed, it automatically realizes safe locking, which is highly safe.

[0052] In the above embodiment, the lateral position of the door 1 is controlled by the travel switch 14 and the moving mechanism, so that the door 1 can be automatically moved in translation, with precise position adjustment and convenient control.

[0053] It should be noted that the moving mechanism can be a telescopic lever, such as an electric push rod, an oil cylinder, or an air cylinder. The air cylinder has a fast response speed, a simple structure, energy saving and environmental protection, and the electric push rod has precise control; it can also be a lead screw, a motor or other structure.

[0054] Of course, driving the box door 1 to move by a moving mechanism is only a preferred implementation, and is not the only one. The box door 1 can also be pushed to move manually.

[0055] In a preferred embodiment, a limit block is set on the side of the flange 17 that moves away from the door 1 to open the door. The limit block is the extreme position of the door 1 for closing the door. When the door 1 hits the limit block, it stops moving further to prevent the door 1 from excessive movement.

[0056] Based on the above specific embodiments, the position adjustment device includes:

[0057] Distance sensors are arranged at multiple positions on the front of the flange 17 to detect the distance between the door 1 and the flange 17;

[0058] A driving mechanism connected to the distance sensor, used to control the door 1 to move toward the flange 17 and fit against the flange 17 when the distances between the door 1 and the flange 17 are equal.

[0059] In a specific embodiment, the position adjustment device includes a distance sensor and a driving mechanism. The distance sensor is arranged on the front of the flange 17. There are multiple distance sensors, which are respectively arranged at multiple positions on the front of the flange 17, such as the upper, lower, left and right positions. The multiple distance sensors respectively measure the distance from the door 1 to each position of the flange 17.

[0060] The driving mechanism is connected to the distance sensor, and the distance sensor sends the distance information from the door 1 to each position of the flange 17 to the driving mechanism. The driving mechanism compares the received distance information. If the distance from each position of the door 1 to each position of the flange 17 is equal, it means that the door 1 is parallel to the flange 17 and the fit is consistent. At this time, the driving mechanism controls the door 1 to move to the side of the flange 17 to fit the door 1 evenly and flatly on the flange 17.

[0061] In the above embodiment, the distance between the door and the flange 17 can be adjusted, so that when the door 1 moves, there is a set distance between the door 1 and the flange 17, which reduces the friction during the operation process and reduces the difficulty of installation; when the door 1 and the flange 17 are aligned in the horizontal position, a vertical force is applied to the door 1 so that the door 1 is pressed against the flange 17 to ensure sealing.

[0062] In a preferred embodiment, the position adjustment device comprises:

[0063] Pressure sensors are arranged at multiple positions on the front of the flange 17 to detect pressure information of each position of the door 1 relative to the flange 17;

[0064] A driving mechanism connected to the pressure sensor, used to control the box door 1 to move toward the flange 17 and fit onto the flange 17 when the pressure values ​​of the pressure sensors at various positions are equal.

[0065] Specifically, the position adjustment device includes a pressure sensor and a driving mechanism. The pressure sensor is arranged on the front of the flange 17. There are multiple pressure sensors, which are respectively arranged at multiple positions on the front of the flange 17, such as the top, bottom, left and right positions. Multiple pressure sensors respectively detect the pressure information of the door 1 at each position of the flange 17. The driving mechanism is connected to the pressure sensor, and the pressure sensor sends the pressure information to the driving mechanism. The driving mechanism compares the received pressure information. If the pressure values ​​of the pressure sensors at each position are equal and the pressure directions are the same, it means that the distances from each position of the door 1 to the flange 17 are equal, the door 1 is parallel to the flange 17, and the fit is consistent. At this time, the driving mechanism vacuums the door 1 and adsorbs the door 1 evenly and flatly on the flange 17. Preferably, a sealing ring 16 is installed on the inner side of the door 1, and the sealing ring 16 presses the flange 17 tightly for better sealing.

[0066] In the above embodiment, the pressure sensor and the driving mechanism are used to achieve uniform fit between the box door 1 and the flange 17 , and the box door 1 and the flange 17 are tightly sealed.

[0067] Based on the above specific embodiments, the position adjustment device further includes:

[0068] An alarm mechanism connected to the distance sensor, used to remind the user to adjust the angle between the door 1 and the flange 17 when the distance values ​​of the distance sensors at different positions are not equal.

[0069] In a specific embodiment, the position adjustment device also includes an alarm mechanism, which is connected to the distance sensor. The position adjustment device sends the detected distance value to the alarm mechanism, and the alarm mechanism compares whether the distance values ​​of each position are equal. If they are not equal, it means that the box door 1 and the flange 17 are not in good condition, and a sound or / and flash alarm is emitted to remind the operator to adjust the angle between the box door 1 and the flange 17 in time so that the box door 1 and the flange 17 fit smoothly and evenly.

[0070] In a preferred embodiment, the alarm mechanism is connected to the pressure sensor to remind the user to adjust the angle between the door 1 and the flange 17 when the pressure values ​​of the pressure sensors at different positions are not equal, so that the door 1 and the flange 17 fit more tightly and smoothly.

[0071] Based on the above specific embodiments, the position adjustment device includes:

[0072] A fixed sensor for detecting the height of the top of the flange 17;

[0073] A height sensor for detecting the height of the top of the door 1;

[0074] A lifting mechanism connected to the fixed sensor and the height sensor, used to adjust the top height of the door 1 to the top height of the flange 17 when the top height of the door 1 is not equal to the top height of the flange 17.

[0075] In a specific embodiment, the position adjustment device includes a fixed sensor, a height sensor and a lifting mechanism, wherein the fixed sensor is used to detect the vertex height of the flange 17, and the height sensor is used to detect the vertex height of the door 1. Preferably, the fixed sensor and the height sensor are fixed on the support assembly 2, and the position is fixed to reduce shaking interference.

[0076] The lifting mechanism is connected to the fixed sensor and the height sensor. The lifting mechanism receives the detected vertex heights of the flange 17 and the vertex heights of the door 1, and compares the vertex heights of the flange 17 and the vertex heights of the door 1. If the vertex heights of the door 1 are not equal to the vertex heights of the flange 17, it means that the position of the door 1 and the position of the flange 17 are not aligned in the vertical direction. The lifting mechanism drives the door 1 to rise and fall in the vertical direction, and adjusts the vertex height of the door 1 to the vertex height of the flange 17, ensuring that the position of the door 1 and the position of the flange 17 are aligned in the vertical direction to achieve normal closing.

[0077] In the above embodiment, the height of the door 1 is adjusted by fixing the sensor, the height sensor and the lifting mechanism, the adjustment accuracy is high and the installation difficulty is reduced.

[0078] Based on the above-mentioned specific embodiments, the position adjustment device includes an adapter shaft 6 connected to the connecting plate of the pulley trolley 5, an upper adjustment ring 9 rotatably connected to the adapter shaft 6, a lower adjustment ring 10 rotatably connected to the box door 1, and a connecting pin shaft 7 connected between the upper adjustment ring 9 and the lower adjustment ring 10. The direction of the rotation axis of the pulley trolley 5 and the upper adjustment ring 9 and the direction of the rotation axis of the box door 1 and the lower adjustment ring 10 are the same as the direction of the door guide rail assembly 3.

[0079] In a specific embodiment, the position adjustment device includes a transfer shaft 6, an upper adjustment ring 9, a lower adjustment ring 10, and a connecting pin shaft 7. The pulley trolley 5 is a common component on the above, and the lower end of the pulley trolley 5 is connected to the upper end of the connecting plate by bolts.

[0080] The adapter shaft 6 is connected to the lower end of the connecting plate by bolts, the upper adjustment ring 9 is rotatably connected to the adapter shaft 6, the lower adjustment ring 10 is rotatably connected to the box door 1, and the connecting pin 7 is connected between the upper adjustment ring 9 and the lower adjustment ring 10. The rotation axis direction of the pulley trolley 5 and the upper adjustment ring 9 and the rotation axis direction of the box door 1 and the lower adjustment ring 10 are all along the length direction of the door guide assembly 3. The two rotation connections can form two hinged structures, and the positions and angles of the two rotation axes can be adjusted during the movement of the box door 1, so that the box door 1 and the flange 17 remain parallel, prevent one end of the box door 1 from tilting, and achieve uniform fit between the box door 1 and the flange 17 when vacuuming.

[0081] On the basis of the above-mentioned specific embodiments, the upper adjusting ring 9 is sleeved and connected to the upper end of the connecting pin 7, and the sleeve depth is adjustable; the lower adjusting ring 10 is sleeved and connected to the lower end of the connecting pin 7, and the sleeve depth is adjustable.

[0082] In a specific embodiment, the upper adjustment ring 9 and the lower adjustment ring 10 are respectively connected to the two ends of the connecting pin shaft 7, and the depth of the installation can be adjusted to control the height of the box door 1 to be consistent with the height of the flange 17. The connection is convenient and the adaptability is wide.

[0083] In a preferred embodiment, of course, the height adjustment of the box door 1 can be driven by a vertically arranged telescopic cylinder, the telescopic cylinder is installed on the pulley trolley 5, and the telescopic rod is connected to the box door 1, and the structure is simple.

[0084] On the basis of the above-mentioned specific embodiments, the lower end of the upper adjusting ring 9 and the upper end of the lower adjusting ring 10 both have threaded holes, the connecting pin 7 is a threaded rod, and the two ends of the connecting pin 7 are respectively threadedly connected to the lower end of the upper adjusting ring 9 and the upper end of the lower adjusting ring 10;

[0085] At least two locking nuts 11 are connected to the middle of the connecting pin 7 , and the end surfaces of the at least two locking nuts 11 are respectively in contact with the lower end surface of the upper adjusting ring 9 and the upper end surface of the lower adjusting ring 10 .

[0086] In a specific embodiment, the two ends of the connecting pin 7 are respectively threadedly connected to the lower end of the upper adjusting ring 9 and the upper end of the lower adjusting ring 10, which is convenient for connection and has high adjustment accuracy.

[0087] The end faces of the locking nut 11 are respectively in contact with the lower end faces of the upper adjusting ring 9 and the upper end faces of the lower adjusting ring 10. The nut has a self-locking property. The nut is used to self-lock the connecting pin 7 and the upper adjusting ring 9, and the connecting pin 7 and the lower adjusting ring 10 to prevent the threaded connection from loosening.

[0088] On the basis of the above-mentioned specific embodiments, it also includes a support assembly 2 connected to the upper side wall of the flange 17 and hoisted above the door guide rail assembly 3. The upper part of the door guide rail assembly 3 is connected to the support assembly 2 by a bolt member 4. The hole of the support assembly 2 is an elongated hole. The length direction of the elongated hole is perpendicular to the length direction of the door guide rail assembly 3, and the bolt member 4 can move along the length direction of the elongated hole.

[0089] In a specific embodiment, the support assembly 2 is suspended above the door rail assembly 3, and the support assembly 2 is connected to the upper side wall of the flange 17 by bolts, so that the support assembly 2 and the flange 17 are connected as a whole, thereby improving the stability of the support assembly 2. The upper part of the door rail assembly 3 is connected to the support assembly 2 by bolts 4, so that the door rail assembly 3 and the support assembly 2 are fixed. The hole for mounting the bolts 4 on the support assembly 2 is a long hole, and the distance between the door 1 and the flange 17 can be adjusted.

[0090] In practical applications, the door 1 is connected to the base assembly 8 by means of a connecting bolt 15, the base assembly 8 is connected to the lower adjusting ring 10 by means of an adjusting bolt 12, the lower adjusting ring 10 is connected to the upper adjusting ring 9 by means of a connecting pin 7, the lower adjusting ring 10 and the upper adjusting ring 9 can adjust the distance between each other by means of the rotation of the connecting pin 7, and this distance can change the distance between the center of the door 1 and the center of the flange 17 until the center of the door 1 and the center of the flange 17 are adjusted to coincide, the upper adjusting ring 9 is connected to the adapter shaft 6 by means of an adjusting bolt 12, and two adjusting bolts 12 can form two hinged structures, so that the door 1 and the flange 17 can be evenly fitted when being vacuumed.

[0091] The transfer shaft 6 is connected to the pulley trolley 5 by adjusting bolts 12, and the pulley trolley 5 is installed on the door guide rail assembly 3. The pulley trolley 5 can slide on the door guide rail assembly 3, and the door guide rail assembly 3 is connected to the support assembly 2 by bolts 4. The hole of the support assembly 2 for installing the bolt 4 is a long hole, which can adjust the distance between the box door 1 and the flange 17. The support assembly 2 is connected to the side wall of the flange 17 by bolts. Through the combination of the above mechanisms, the translational opening action of the box door 1 can be realized. Before loading the equipment, manually grasp the handle on the box door 1, and open the box door 1 to the open position, and the guide rails are connected. After the material is loaded, the guide rails are disengaged, and the box door 1 is opened to the closed position. At this time, the travel switch 14 is triggered, and the controller receives the closing model, manually locks the handwheel 13, and fits the box door 1 with the flange 17 to complete the closing action of the box door 1.

[0092] Based on the translation door mechanism provided in the above embodiment, the utility model further provides a freeze dryer, which includes a translation door mechanism, wherein the translation door mechanism is any one of the translation door mechanisms in the above embodiment. Since the freeze dryer adopts the translation door mechanism in the above embodiment, please refer to the above embodiment for the beneficial effects of the freeze dryer. Please refer to the prior art for the structures of other parts of the freeze dryer, which will not be described in detail herein.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] The freeze dryer and the sliding door mechanism provided by the utility model are introduced in detail above. The principle and implementation mode of the utility model are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A sliding door mechanism, characterized in that: The invention comprises a flange (17) installed at a door opening, a door guide assembly (3) installed above the door opening, a pulley trolley (5) installed on the door guide assembly (3) and capable of moving along the door guide assembly (3), and a box door (1) adapted to the flange (17) for closing the opening of the flange (17), wherein the axial direction of the door guide assembly (3) is perpendicular to the center line of the flange (17); and a position adjustment device having two ends respectively connected to the pulley trolley (5) and the box door (1) for adjusting the left-right distance, front-back distance, and up-down distance between the box door (1) and the flange (17).

2. The sliding door mechanism according to claim 1, characterized in that: The position adjustment device comprises: A travel switch (14) for detecting whether the door (1) closes the flange (17); A moving mechanism connected to the travel switch (14) and used to control the box door (1) to stop moving along the door guide rail assembly (3) when receiving a door closing signal from the travel switch (14).

3. The sliding door mechanism according to claim 1, characterized in that: The position adjustment device comprises: Distance sensors arranged at multiple positions on the front of the flange (17) for detecting the distance from the box door (1) to the flange (17); A driving mechanism connected to the distance sensor and used to control the door (1) to move toward the side of the flange (17) and fit against the flange (17) when the distances between the door (1) and the flange (17) are equal.

4. The sliding door mechanism according to claim 3, characterized in that: The position adjustment device also includes: An alarm mechanism is connected to the distance sensor and is used to remind the user to adjust the angle between the box door (1) and the flange (17) when the distance values ​​of the distance sensors at different positions are not equal.

5. The sliding door mechanism according to claim 1, characterized in that: The position adjustment device comprises: A fixed sensor for detecting the height of the top of the flange (17); A height sensor for detecting the height of the top of the door (1); A lifting mechanism connected to the fixed sensor and the height sensor, and used to adjust the height of the top of the door (1) to the height of the top of the flange (17) when the height of the top of the door (1) is not equal to the height of the top of the flange (17).

6. The sliding door mechanism according to any one of claims 1 to 5, characterized in that: The position adjustment device comprises an adapter shaft (6) connected to a connecting plate of the pulley trolley (5), an upper adjustment ring (9) rotatably connected to the adapter shaft (6), a lower adjustment ring (10) rotatably connected to the box door (1), and a connecting pin shaft (7) connected between the upper adjustment ring (9) and the lower adjustment ring (10); the direction of the rotation axis of the pulley trolley (5) and the upper adjustment ring (9) and the direction of the rotation axis of the box door (1) and the lower adjustment ring (10) are the same as the direction of the door guide rail assembly (3).

7. The sliding door mechanism according to claim 6, characterized in that: The upper adjustment ring (9) is sleeve-connected to the upper end of the connecting pin shaft (7), and the sleeve depth is adjustable; the lower adjustment ring (10) is sleeve-connected to the lower end of the connecting pin shaft (7), and the sleeve depth is adjustable.

8. The sliding door mechanism according to claim 7, characterized in that: The lower end of the upper adjustment ring (9) and the upper end of the lower adjustment ring (10) both have threaded holes, the connecting pin shaft (7) is a threaded rod, and the two ends of the connecting pin shaft (7) are respectively threadedly connected to the lower end of the upper adjustment ring (9) and the upper end of the lower adjustment ring (10); At least two locking nuts (11) are connected to the middle of the connecting pin shaft (7), and the end faces of the at least two locking nuts (11) are respectively in contact with the lower end face of the upper adjustment ring (9) and the upper end face of the lower adjustment ring (10).

9. The sliding door mechanism according to any one of claims 1 to 5, characterized in that: It also includes a support assembly (2) connected to the upper side wall of the flange (17) and hoisted above the door guide rail assembly (3); the upper part of the door guide rail assembly (3) is connected to the support assembly (2) via a bolt member (4); the hole of the support assembly (2) is an elongated hole, the length direction of the elongated hole is perpendicular to the length direction of the door guide rail assembly (3), and the bolt member (4) can move along the length direction of the elongated hole.

10. A freeze dryer, comprising a sliding door mechanism, characterized in that: The sliding door mechanism is specifically the sliding door mechanism according to any one of claims 1 to 9.

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