Vacuum distillation dapagliflozin intermediate separation and purification device

Abstract

The utility model discloses a vacuum distillation dapagliflozin intermediate separation and purification device which comprises a distillation retort, a stand column is fixedly installed at the bottom of the distillation retort, dovetail sliding grooves are formed in the outer walls of the two sides of the stand column, the stand column is connected with an annular heating pipe in a sleeved mode, and connecting columns are symmetrically and fixedly installed on the inner wall of the annular heating pipe. And a dovetail sliding block is fixedly installed at the other end of the connecting column, the dovetail sliding block is in sliding fit with the dovetail sliding groove, a touch-press type switch is fixedly installed at the bottom in the dovetail sliding groove, a floating ring is arranged below the annular heating pipe, and a power supply conveying mechanism is arranged in the stand column. The liquid level of the materials continuously descends, the floating ring and the annular heating pipe can fall along with descending of the liquid level, when the dovetail sliding block moves to the lowest end of the dovetail sliding groove, the dovetail sliding block can press the touch-pressing type switch, the touch-pressing type switch is triggered to send out a signal, power supply to the annular heating pipe is stopped, and dry burning of the annular heating pipe is avoided.

Description

Technical Field

[0001] The utility model relates to a separation and purification device, in particular to a vacuum distillation dapagliflozin intermediate separation and purification device. Background Art

[0002] Dapagliflozin is a new anti-diabetic drug and an important choice in diabetes drug treatment. It is suitable for use as an adjunct to diet and exercise to improve blood sugar control in adults with type 2 diabetes.

[0003] For example, a vacuum distillation dapagliflozin intermediate separation and purification device with the publication number CN215691748U disclosed in the Chinese patent relates to the field of dapagliflozin production technology. In order to solve the problem that the heating tube of the existing vacuum distillation dapagliflozin intermediate separation and purification device continues to work as the material liquid level drops during use, causing the device to partially dry burn, resulting in energy waste. An internal heating bracket is installed inside the main bracket, a heating tube mounting plate is installed inside the internal heating bracket, a heating tube body is installed at the upper end of the heating tube mounting plate, the heating tube body is fixedly connected to the heating tube mounting plate, an external control bracket is installed outside the main bracket, the external control bracket is welded to the main bracket, and a DD direct drive motor is installed at the upper end of the external control bracket.

[0004] Some problems were found during the use of the above-mentioned existing vacuum distillation dapagliflozin intermediate separation and purification device. First, a motor is used in conjunction with a screw to adjust the position of the heating tube. To ensure the smoothness of the screw, the screw and other components need to be maintained regularly. Secondly, the large number of motors will make the overall cost of the device high. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum distillation dapagliflozin intermediate separation and purification device to solve the existing problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum distillation dapagliflozin intermediate separation and purification device, comprising a distillation tank, a column is fixedly installed at the bottom of the distillation tank, dovetail grooves are provided on the outer walls on both sides of the column, an annular heating tube is sleeved on the column, connecting columns are symmetrically fixedly installed on the inner wall of the annular heating tube, a dovetail slider is fixedly installed on the other end of the connecting column, the dovetail slider is slidably matched with the dovetail groove, a touch-type switch is fixedly installed on the bottom of the dovetail groove, and a floating ring is arranged under the annular heating tube.

[0007] Preferably, a power transmission mechanism is provided inside the column, and the touch-type switch is electrically connected to the power transmission mechanism.

[0008] Preferably, a flexible wire is fixedly connected to the annular heating tube, and the other end of the flexible wire is fixedly connected to a power transmission mechanism.

[0009] Preferably, the floating ring is hollow inside.

[0010] Preferably, a U-shaped buckle is fixedly mounted on the floating ring, and the U-shaped buckle cooperates with the connecting column.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. As the material is continuously distilled, the liquid level of the material continues to drop, and the floating ring and the annular heating tube will fall together with the liquid level. When the dovetail slider moves to the bottom of the dovetail slide, the dovetail slider will press on the touch-type switch, and the touch-type switch will send a signal when triggered to stop supplying power to the annular heating tube to prevent the annular heating tube from dry burning.

[0013] 2. Refill the material into the distillation tank. Due to buoyancy, the floating ring will move the annular heating tube upward. The touch-type switch will reset after losing pressure, thereby reconnecting the power supply to supply power to the annular heating tube. Compared with the existing device, the structure is simple and the manufacturing cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the annular heating tube and floating ring structure of the utility model;

[0017] Figure 4 For the utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1. distillation tank; 2. column; 201. dovetail slide; 202. touch-type switch; 3. annular heating tube; 301. connecting column; 302. dovetail slider; 303. flexible wire; 4. floating ring; 401. U-shaped buckle. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4 The utility model provides a technical solution: a vacuum distillation dapagliflozin intermediate separation and purification device, comprising a distillation tank 1, a column 2 is fixedly installed at the bottom of the distillation tank 1, dovetail slides 201 are opened on the outer walls of both sides of the column 2, an annular heating tube 3 is sleeved on the column 2, a connecting column 301 is symmetrically fixedly installed on the inner wall of the annular heating tube 3, a dovetail slider 302 is fixedly installed on the other end of the connecting column 301, the dovetail slider 302 is slidably matched with the dovetail slide 201, a touch-type switch 202 is fixedly installed on the bottom of the dovetail slide 201, and a floating ring 4 is arranged below the annular heating tube 3.

[0021] In this embodiment, the floating ring 4 can provide a certain buoyancy for the annular heating tube 3. When the distillation tank 1 is filled with liquid medicine, the dovetail slider 302 cooperates with the dovetail slot 201 so that the annular heating tube 3 can only move up and down. At the same time, the up and down movement of the annular heating tube 3 is limited to avoid the situation where multiple annular heating tubes 3 are superimposed on each other. As the liquid medicine inside the distillation tank 1 continues to evaporate, the floating ring 4 will descend with the liquid medicine, and the annular heating tube 3 will descend together. When the annular heating tube 3 drives the dovetail slider 302 to move to the bottom of the dovetail slot 201, the dovetail slider 302 will contact the touch-type switch 202, thereby sending a signal to stop supplying power to the annular heating tube 3, thereby avoiding dry burning of the annular heating tube 3.

[0022] Among them, in order to achieve the purpose of transmitting power, the present device is implemented by the following technical solution: a power transmission mechanism is arranged inside the column 2, the touch-type switch 202 is electrically connected to the power transmission mechanism, a flexible wire 303 is fixedly connected to the annular heating tube 3, and the other end of the flexible wire 303 is fixedly connected to the power transmission mechanism.

[0023] The annular heating tube 3 is supplied with power through the power transmission mechanism and the flexible wire 303 . After the touch switch 202 is triggered, a signal is sent to the power transmission mechanism to stop supplying power to the annular heating tube 3 .

[0024] In order to achieve the purpose of suspending the annular heating tube 3 in the liquid medicine, the device adopts the following technical solution: the floating ring 4 is hollow inside, a U-shaped buckle 401 is fixedly installed on the floating ring 4, and the U-shaped buckle 401 cooperates with the connecting column 301.

[0025] Since the floating ring 4 is hollow inside and has strong buoyancy, the U-shaped buckle 401 cooperates with the connecting column 301 to fix the floating ring 4 under the connecting column 301, thereby providing buoyancy for the annular heating tube 3 and making the annular heating tube 3 suspended in the medicine solution.

[0026] The working principle and use process of the utility model are as follows: when using, the device needs to be placed in a suitable position, the staff adds the material into the device, and then the material is distilled under the action of the annular heating tube 3. As the material is continuously distilled, the liquid level of the material continues to drop, and the floating ring 4 will fall together with the drop of the liquid level. The fall of the floating ring 4 will drive the annular heating tube 3 and the dovetail slider 302 to move down together. When the dovetail slider 302 moves to the lowermost end of the dovetail slide 201, the liquid level is below the floating ring 4. The floating ring 4 and the annular heating tube 3 are exposed and suspended on the liquid surface. The weight of the annular heating tube 3 and the floating ring 4 themselves will drive and transmit to the dovetail slider 302, and the dovetail slider 302 will press on the touch-pressure switch 202. The touch-pressure switch 202 will be triggered to send a signal to stop supplying power to the annular heating tube 3 to prevent the annular heating tube 3 from drying out.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum distillation dapagliflozin intermediate separation and purification device, comprising a distillation tank (1), characterized in that: A column (2) is fixedly installed at the bottom of the distillation tank (1), and dovetail grooves (201) are opened on the outer walls of both sides of the column (2). An annular heating tube (3) is sleeved on the column (2), and a connecting column (301) is symmetrically fixedly installed on the inner wall of the annular heating tube (3). A dovetail slider (302) is fixedly installed at the other end of the connecting column (301), and the dovetail slider (302) is slidably matched with the dovetail groove (201). A touch-type switch (202) is fixedly installed at the bottom of the dovetail groove (201), and a floating ring (4) is arranged below the annular heating tube (3).

2. A vacuum distillation dapagliflozin intermediate separation and purification device according to claim 1, characterized in that: A power transmission mechanism is provided inside the column (2), and the touch-type switch (202) is electrically connected to the power transmission mechanism.

3. A vacuum distillation dapagliflozin intermediate separation and purification device according to claim 1, characterized in that: A flexible wire (303) is fixedly connected to the annular heating tube (3), and the other end of the flexible wire (303) is fixedly connected to a power supply transmission mechanism.

4. A vacuum distillation dapagliflozin intermediate separation and purification device according to claim 1, characterized in that: The floating ring (4) is hollow inside.

5. A vacuum distillation dapagliflozin intermediate separation and purification device according to claim 1, characterized in that: A U-shaped buckle (401) is fixedly mounted on the floating ring (4), and the U-shaped buckle (401) cooperates with the connecting column (301).

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