Freeze-drying weighing device

Abstract

The utility model discloses a freeze-drying weighing device. The freeze-drying weighing device comprises a weighing sensor, a freeze-drying tray, a clamp, a connecting assembly and the like, the freeze-drying tray is a round tray, a fixing part is further designed at the circle center position of the upper side face of the freeze-drying tray and is of a hollow structure, and the inner side face and the outer side face of the fixing part are conical slopes and provided with four clamping grooves. The top end of the tray clamping column is a T-shaped column; the bottom end of the freeze-drying support fixing part is a conical surface and is provided with four arc-shaped rib plates, the tray clamping column penetrates through the freeze-drying support fixing part from bottom to top, and the four arc-shaped rib plates are clamped into the clamping grooves to be connected; a ring lock is located above the tray clamping column, a sunken clamping groove is formed in the upper end of the ring lock, and the T-shaped column rotatably falls into the sunken clamping groove of the ring lock for connection; screw holes in the left and right ends of the weighing sensor are respectively connected with the clamp and the ring lock through screws. The weighing device effectively solves the problems that an existing weighing structure is complex, installation is tedious, cost is high, and existing measurement requirements cannot be met.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing devices, in particular to a freeze-drying weighing device. Background Art

[0002] In order to better develop the freeze-drying process flow, it is necessary to measure and calculate some physical property parameters during the freeze-drying process. Among them, the change in the weight of the solution in the vial during the freeze-drying process is one of the measured values. Since only 3-6 groups of the change values of the solution weight to be measured are required, only a simple, convenient and reliable weighing device is needed for measurement. The existing weighing devices are mainly used to accurately measure the weight change of materials during the freeze-drying process, with a short measurement time interval and dense data acquisition. Therefore, the weighing structure is relatively complex, the installation is cumbersome, the cost is high, and it does not meet the existing measurement requirements.

[0003] Therefore, there is an urgent need to design a weighing device with a simple structure, convenient installation, convenient operation and low cost to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a freeze-drying weighing device, which effectively solves the problems of the existing weighing device, such as complex structure, cumbersome installation, high cost and not meeting the existing measurement requirements.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: a freeze-drying weighing device, which includes:

[0006] Composed of components such as a weighing sensor, a freeze-drying tray, a fixture and a connecting component;

[0007] The weighing sensor is a cuboid, and there are two threaded holes at both ends in the length direction;

[0008] The fixture is fixed on the freeze-drying plate layer;

[0009] The weighing sensor is arranged on the fixture, and the fixture supports the weights of the weighing sensor, the connecting component, the freeze-drying tray and the freeze-dried material;

[0010] The connecting component connects the freeze-drying tray and the weighing sensor, and the freeze-dried material to be weighed is placed on the freeze-drying tray and weighed by the weighing sensor.

[0011] Preferably, a fixing part is arranged on the freeze-drying tray, the fixing part has a hollow structure, the fixing part is composed of a frustum part and a cylindrical part spliced together, and the frustum part is provided with a clamping groove for connecting with the connecting component and maintaining circumferential positioning therebetween; a limiting groove is further arranged in the radial direction from the fixing part to the edge of the freeze-drying tray, and the limiting groove is located below the weighing sensor.

[0012] Preferably, the connecting component includes a tray stud and a ring lock, and the tray stud passes through the freeze-drying tray and is connected to the ring lock.

[0013] Preferably, the tray stud includes: an arc-shaped rib plate, which is in male-female fit with the card slot; a T-shaped column, which is rotatably connected to the ring lock.

[0014] Preferably, the ring lock includes a groove axially passing through the T-shaped column and a locking part for rotatably locking the T-shaped column. The locking part includes a buffer part and a sinking part. The T-shaped column is held by rotating through the buffer part and continues to rotate to the sinking part to lock the T-shaped column.

[0015] Preferably, the fixture includes: a lower layer plate, which is connected to the weighing sensor; an upper layer plate, which is provided with a threaded hole for screwing in a hand-tightening bolt; a connecting plate, which connects one side of the upper layer plate and the lower layer plate, and the height of the connecting plate is greater than the thickness of the freeze-drying plate layer; a part of the freeze-drying plate layer is placed in the fixture, and the hand-tightening bolt adjusts the fixation between the fixture and the freeze-drying plate layer.

[0016] Preferably, the fixture further includes an anti-abrasion pad. The anti-abrasion pad is internally hollow and provided with a threaded hole, and is placed above the lower layer plate at the position directly below the threaded hole of the upper layer plate.

[0017] Preferably, the lower layer plate is of an I-shaped structure, the lower layer plate is provided with holes, and the lower layer plate is connected to the weighing sensor by bolts.

[0018] Preferably, the holes include a first hole and a second hole, and the first hole is larger than the second hole.

[0019] The present invention provides a freeze-drying weighing device, which has the following beneficial effects:

[0020] In this freeze-drying weighing device, the connection between the conical part of the fixing part and the tray stud is designed as a conical inclined surface, which can ensure the smooth sliding of the ring lock in the conical protrusion, so that there is a buffer distance when the freeze-drying lower plate layer lifts the tray upward, which can avoid hard damage to the weighing sensor; the sunken card slot design of the ring lock also has a buffer section in the connection with the arc-shaped rib plate at the top of the tray stud, which can also avoid hard damage to the weighing sensor; this freeze-drying weighing device has a simple structure, is easy to install, easy to operate, and has a low cost, and can accurately measure the weight change of materials during the freeze-drying process, and better develop the freeze-drying process flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a freeze-drying weighing device of the present invention.

[0022] Figure 2This is a schematic diagram of the freeze-drying tray structure of the present utility model.

[0023] Figure 3 This is a schematic diagram of the tray clamping post structure.

[0024] Figure 4 This is a schematic diagram of the ring lock structure.

[0025] Figure 5 This is a schematic diagram of the wear-resistant pad structure.

[0026] Figure 6 This is a schematic diagram of the fixture structure.

[0027] Figure 7 This is the installation and cooperation diagram of the weighing device and the shelf.

[0028] In the figure: 1. Freeze-drying tray; 2. Fixed part; 3. Limit groove; 4. Tray clamping post; 5. Ring lock; 501. Groove; 502. Buffer part; 503. Locking part; 6. Weighing sensor; 7. Fixture; 8. Wear-resistant pad; 9. Hand-tightening bolt; 10. Lower freeze-drying shelf; 11. Upper freeze-drying shelf. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0030] As Figure 1 shown, the present utility model provides a technical solution: a freeze-drying weighing device, including:

[0031] A weighing sensor 6, a freeze-drying tray 1, a fixture 7 and a connection component and other components;

[0032] The fixture 7 is fixed on the freeze-drying shelf;

[0033] The weighing sensor 6 is arranged on the fixture 7, and the fixture 7 supports the weights of the weighing sensor 6, the connection component, the freeze-drying tray 1 and the freeze-dried material;

[0034] The connection component connects the freeze-drying tray 1 and the weighing sensor 6, and the weighed freeze-dried material is placed on the freeze-drying tray 1 and weighed by the weighing sensor 6.

[0035] As Figure 2As shown in the figure, a fixing part 2 is provided on the freeze-drying tray 1. The fixing part 2 has a hollow structure and is composed of a frustum part and a cylindrical part spliced together. The frustum part is provided with a clamping groove that is connected to the connecting component and maintains circumferential positioning therebetween. Along the fixing part 2 to the edge of the freeze-drying tray 1, at least a pair of protrusions are further provided. The protrusions are located below the weighing sensor 6. Therefore, a limiting groove 3 is formed directly below the weighing sensor 6 to block the movement of the material bottle to below the weighing sensor 6 and prevent the material bottle with a relatively large height from jamming the weighing sensor 6.

[0036] As Figures 3 to 4 shown in the figure, the connecting component includes a tray clamping column 4 and a ring lock 5. The tray clamping column 4 passes through the fixing part 2 of the freeze-drying tray 1 and is connected to the ring lock 5. The tray clamping column 4 includes an arc-shaped rib plate and a T-shaped column. The arc-shaped rib plate is in male-female fit with the clamping groove of the fixing part 2, and the connection between the frustum part of the fixing part 2 and the tray clamping column 4 is designed as a conical inclined plane, which can ensure the smooth sliding of the ring lock 5 within the conical protrusion, so that there is a buffer distance when the lower freeze-drying plate layer 10 lifts the tray, and it can avoid hard damage to the weighing sensor 6. The T-shaped column is rotatably connected to the ring lock 5. The ring lock 5 includes a groove 501 axially passing through the T-shaped column and a locking part 503 for rotating and locking the T-shaped column. The locking part 503 includes a buffer part 502 and a sinking part. The T-shaped column is held by rotating through the buffer part 502 and continues to rotate to the sinking part to lock the T-shaped column. The sunken clamping groove design of the ring lock 5 also has a buffer section for the connection with the arc-shaped rib plate at the top of the tray clamping column 4, and it can also avoid hard damage to the weighing sensor 6.

[0037] As Figures 5 to 6 shown in the figure, the fixture 7 includes: a lower layer plate, which is bolted to the weighing sensor 6; an upper layer plate, which is provided with a threaded hole for screwing in the hand-tightening bolt 9; a connecting plate, which connects one side of the upper layer plate and the lower layer plate. The height of the connecting plate is greater than the thickness of the freeze-drying plate layer, so that part of the freeze-drying plate layer can be placed into the fixture 7. The wear-resistant pad 8 is placed above the lower layer plate, directly below the threaded hole of the upper layer plate, and then the hand-tightening bolt 9 is used to adjust the fixation of the fixture 7 and the freeze-drying plate layer, so as to realize the indirect contact between the hand-tightening bolt 9 and the freeze-drying plate layer and fix the freeze-drying plate layer, which can prevent the thread of the hand-tightening bolt 9 from scratching the freeze-drying plate layer.

[0038] The lower layer plate is of an I-shaped structure. The lower layer plate is provided with two rows of holes, and the holes of the lower layer plate include a first hole close to the freeze-drying plate layer and a second hole close to the weighing sensor 6. The first hole is larger than the second hole. The lower layer plate is bolted to the weighing sensor 6, so that the bolts are hidden inside the lower layer plate and do not affect the fixation of the freeze-drying plate layer.

[0039] A pair of screws connect the screw holes of the load cell 6 with the screw holes of the lower layer plate of the fixture 7 to form a suspension device. The lower layer plate of the fixture 7 is connected to the load cell 6 by countersunk head screws, which can achieve a tight fit between the top surface of its lower layer plate and the bottom surface of the freeze-drying plate layer, keeping the load cell 6 in a horizontal state and ensuring that the force application direction is perpendicular to ensure the accuracy of measurement.

[0040] As Figure 7 shown, a lower freeze-drying plate layer 10 is placed below the freeze-drying tray 1. The lower layer plate is connected to an external control system to lift and lower the freeze-drying tray 1, thereby realizing the up and down movement of the freeze-drying tray 1 during the freeze-drying process.

[0041] The installation method of the present utility model is as follows:

[0042] First, connect the screw holes of the lower layer plate of the fixture 7 with the screw holes at one end of the load cell 6 by countersunk head screws, and then connect the screw holes at the other end of the load cell 6 with the screw holes of the ring lock 5 by screws;

[0043] Secondly, pass the tray clamping post 4 upwards through the fixing part 2 at the center of the freeze-drying tray 1, and snap the four arc-shaped rib plates into the card slots of the frustum part; the T-shaped post passes through the groove 501 of the ring lock 5 and then rotates successively to the buffer part 502 and the sinking part, so as to connect the whole formed by the freeze-drying tray 1 and the tray clamping post 4 with the ring lock 5;

[0044] Finally, place the upper freeze-drying plate layer 11 above the lower layer plate of the fixture 7, place the wear-resistant pad 8 on the plate layer, directly below the threaded hole of the upper side plate of the fixture 7, and screw the hand-tightening bolt 9 into the threaded hole of the upper side plate of the fixture 7 and then into the wear-resistant pad 8 to fix the upper freeze-drying plate layer 11 and the fixture 7, completing the installation of the whole device.

[0045] The operation principle of the present utility model is as follows:

[0046] Put the vials into the freeze-drying tray 1. As Figure 7 shown, the lifting and lowering of the freeze-drying tray 1 rely on the up and down movement of the lower freeze-drying plate layer 10. The up and down displacement of the lower freeze-drying plate layer 10 is controlled by the freeze-drying oil cylinder receiving the signal of the displacement sensor. When the lower freeze-drying plate layer 10 lifts the freeze-drying tray 1, it is the normal freeze-drying process. When the lower freeze-drying plate layer 10 moves down and the freeze-drying tray 1 is suspended, it is the weighing process. In this way, it circulates repeatedly to complete multiple weighings.

[0047] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A freeze-drying weighing device, characterized in that, Comprising: A load cell, which consists of a freeze-drying tray, a fixture and a connecting component; The fixture is fixed on the freeze-drying plate layer; The load cell is arranged on the fixture, and the fixture supports the weights of the load cell, the connecting component, the freeze-drying tray and the freeze-dried material; The connecting component connects the freeze-drying tray and the load cell, and the weighed freeze-dried material is placed on the freeze-drying tray and weighed by the load cell.

2. The freeze-drying weighing device according to claim 1, wherein, A fixing part is arranged on the freeze-drying tray, the fixing part has a hollow structure, the fixing part is composed of a frustum part and a cylindrical part spliced together, and the frustum part is provided with a clamping groove for connecting with the connecting component and maintaining circumferential positioning therebetween; a limiting groove is further arranged in the radial direction from the fixing part to the edge of the freeze-drying tray, and the limiting groove is located below the load cell.

3. The freeze-drying weighing device according to claim 2, wherein The connecting component includes a tray clamping post and a ring lock, and the tray clamping post passes through the freeze-drying tray and is connected with the ring lock.

4. The freeze-drying weighing device according to claim 3, wherein The tray clamping post includes An arc-shaped rib plate, which is in male-female fit with the clamping groove; A T-shaped post, which is rotatably connected to the ring lock.

5. The freeze-drying weighing device according to claim 4, characterized in that, The ring lock includes a groove axially passing through the T-shaped post and a locking part for rotatably locking the T-shaped post. The locking part includes a buffer part and a sinking part. The T-shaped post is held by rotating through the buffer part, and continues to rotate until the sinking part locks the T-shaped post.

6. The freeze-drying weighing device according to claim 1, wherein: The fixture includes a lower layer plate, which is connected with the load cell; An upper layer plate, which is provided with a threaded hole for screwing in a hand-tightening bolt; A connecting plate, which connects one side of the upper layer plate and the lower layer plate, and the height of the connecting plate is greater than the thickness of the freeze-drying plate layer; Part of the freeze-drying plate layer is placed in the fixture, and the hand-tightening bolt adjusts the fixation of the fixture and the freeze-drying plate layer.

7. The freeze-drying weighing device according to claim 6, wherein The fixture further includes an anti-wear pad, the interior of the anti-wear pad is hollow and provided with a threaded hole, and it is placed above the lower layer plate at the position directly below the threaded hole of the upper layer plate.

8. The freeze-drying weighing device according to claim 7, characterized in that The lower layer plate is of an I-shaped structure, the lower layer plate is provided with holes, and the lower layer plate is connected with the load cell by bolts.

9. The freeze-drying weighing device according to claim 8, wherein, The holes include a first hole and a second hole, and the first hole is larger than the second hole.

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