Catalyst solution decompression evaporation device

Abstract

This utility model relates to a catalyst solution vacuum evaporation device, including a base, a rotary evaporator, a condenser, and a heating pot. The rotary evaporator is mounted on the base, and a rotating body is connected to one side of the rotary evaporator via a support arm. One end of the rotating body is connected to a rotating flask via a distillation pipe, and the lower end of the rotating flask extends into the heating pot. A lower guide tube is inclined downward on one side of the lower end of the condenser. One end of the lower guide tube is tapered and connected to a tube insert. A vacuum tube is sleeved on the outside of the tube insert. The lower end of the vacuum tube is connected to the other end of the rotating body. Several buffer protrusions are evenly distributed on the inner wall of the vacuum tube near the rotating body. The inner wall of the vacuum tube opening is tapered and flared, and it presses against the outer tapered wall of the lower guide tube to achieve a seal. During boiling, the splashed liquid flows between the buffer protrusions on the inner wall of the vacuum tube, which can break the bubbles generated by the boiling solution, reduce the impact pressure of the boiling solution, and prevent the boiling solution from splashing into the condenser.

Description

Technical Field

[0001] This utility model relates to the field of catalyst preparation equipment technology, and in particular to a catalyst solution vacuum evaporation device. Background Technology

[0002] In the preparation of platinum catalysts, a vacuum evaporation device is needed to lower the boiling point of ethanol under low pressure and remove it through vacuum evaporation at low temperature. Currently, the rotary evaporators used in laboratories experience violent boiling during the preparation process due to sudden pressure drops or the sudden formation of bubbles in overheated liquids. This explosive boiling causes some catalyst solution to splash into the condenser, resulting in a high platinum loss rate. Existing technology: CN201621444292.9 discloses an anti-explosive rotary evaporator. This application places two buffer balls between the reagent bottle and the evaporator, and uses a grid and protrusions on the inner wall of the thin tube inside the buffer bottle to break bubbles and reduce the pressure of the boiling solvent. However, the grid in this application cannot be effectively fixed during actual installation and is prone to tilting under external forces, resulting in poor stability. Utility Model Content

[0003] To address the aforementioned problems, this invention discloses a catalyst solution vacuum evaporation device, which solves the problem in the prior art where rotary evaporators cannot effectively prevent splashed liquid from entering the condenser tube when the solution boils violently.

[0004] The specific technical solution is as follows:

[0005] A catalyst solution vacuum evaporation device includes a base, a rotary evaporator, a condenser, and a heating pot. The rotary evaporator is mounted on the base, and a rotating body is connected to one side of the rotary evaporator via a support arm. One end of the rotating body is connected to a rotating flask via a distillation pipe, and the lower end of the rotating flask extends into the heating pot. The condenser is mounted on the base via a bracket, and a lower guide tube is inclined downward on one side of the lower end of the condenser. One end of the lower guide tube is tapered and connected to a tube insert. A vacuum tube is sleeved on the outside of the tube insert. The lower end of the vacuum tube is connected to the other end of the rotating body. Several buffer protrusions are evenly distributed circumferentially on the inner wall of the vacuum tube near the rotating body end, and the top of each buffer protrusion is cone-shaped. The inner wall of the other end of the vacuum tube fits against the outer wall of the tube insert, and the inner wall of the vacuum tube opening is tapered and flared, pressing against the tapered outer wall of the lower guide tube to achieve a seal. Both the outer wall of the vacuum tube end and the outer wall of the guide tube are provided with raised rings, which are clamped and fixed together by clamps.

[0006] Furthermore, a collection bottle is connected to the bottom end of the condenser tube, and an upper guide tube is provided on one side of the lower end of the condenser tube at an angle upward. A feeding tube is embedded in the upper guide tube, and the feeding tube passes through the lower guide tube, the pressure reducing tube, the rotating body and the distillation pipe in sequence and is connected to the rotating flask.

[0007] Furthermore, a retaining ring is fitted on the feeding tube between one end of the embedded tube and the rotating body, and the outer wall of the retaining ring is a conical surface that is narrower at the bottom and wider at the top.

[0008] Furthermore, the maximum diameter of the retaining ring is not less than the inner diameter of the embedded tube portion.

[0009] Furthermore, an annular groove is provided on the conical constriction outer wall between the conduit and the insert, and a sealing ring is embedded in the groove, the sealing ring pressing against the inner wall of the conical surface of the pressure reducing tube for sealing.

[0010] Furthermore, the outer wall of the lower end of the tube opening is tapered.

[0011] The beneficial effects of this utility model are reflected in:

[0012] (1) In this utility model, a pressure reducing tube is installed on the outside of the embedded tube and connected to the distillation channel through the pressure reducing tube. When the solution in the rotating flask boils violently, the splashed liquid flows into the pressure reducing tube through the distillation channel and flows between the buffer protrusions on the inner wall of the pressure reducing tube. Under the action of several conical buffer protrusions, the bubbles generated by the boiling solution can be destroyed and the impact pressure of the boiling solution can be reduced, thus preventing the pipeline from bursting and preventing the boiling solution from splashing into the condenser.

[0013] (2) In this utility model, a retaining ring is provided on the feeding pipe between the embedded tube part and the rotating body to effectively prevent the boiling liquid from splashing into the condenser tube and guide the solution to the buffer protrusion on the inner wall of the pressure reducing tube, thereby further avoiding the loss of solution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a side sectional view of the pressure reducing pipe in this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Base; 2. Rotary evaporator; 3. Rotating body; 4. Distillation tubing; 5. Rotary flask; 6. Heating pan; 7. Condenser; 71. Lower conduit; 72. Embedded tube; 8. Pressure reducing tube; 81. Buffer protrusion; 811. Protruding ring; 82. Groove; 83. Sealing ring; 9. Clamp; 10. Collection bottle; 11. Upper conduit; 12. Feeding tube; 121. Retaining ring. Detailed Implementation

[0017] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0019] Please see the appendix Figure 1-2 This embodiment provides a catalyst solution vacuum evaporation device, including a base 1, a rotary evaporator 2, a condenser 7, and a heating pot 6; the rotary evaporator 2 is installed on the base 1, and a rotating body 3 is connected to one side of the rotary evaporator 2 via a support arm. One end of the rotating body 3 is connected to a rotating flask 5 via a distillation pipe, and the lower end of the rotating flask 5 extends into the heating pot 6. The condenser tube 7 is mounted on the base 1 via a bracket and is located on one side of the rotary evaporator 2. A lower guide tube 71 is inclined downward on one side of the lower end of the condenser tube 7. One end of the lower guide tube 71 is tapered and connected to an embedded tube part 72. A pressure reducing tube 8 is sleeved on the outside of the embedded tube part 72. The lower end of the pressure reducing tube 8 is connected to the other end of the rotating body 3. Several buffer protrusions 81 are evenly distributed circumferentially on the inner wall of the pressure reducing tube 8 near the rotating body. The top of the buffer protrusions is pointed and conical. The inner wall of the other end of the pressure reducing tube 8 is fitted to the outer wall of the embedded tube. The inner wall of the opening of the pressure reducing tube 8 is tapered and flared, and it presses against the tapered outer wall of the lower guide tube 71 to achieve a seal. A raised ring 811 is provided on the outer wall of one end of the pressure reducing tube 8 and the outer wall of the guide tube. The two raised rings 811 are clamped and fixed together by a clamp 9. This clamp is existing technology and will not be described in detail here.

[0020] By fitting a pressure-reducing pipe 8 on the outside of the embedded tube section 72 and directly connecting the pressure-reducing pipe 8 to the upper part of the rotating body 3, when the solution boils, the splashing liquid can flow through the pipe wall and flow to the pipe wall of the pressure-reducing pipe 8, thus avoiding directly rushing into the embedded tube section 72. Subsequently, under the action of several buffer protrusions 81, the impact pressure of the boiling liquid can be effectively reduced, thereby avoiding problems such as pipe bursting.

[0021] In this embodiment, the bottom end of the condenser tube 7 is connected to the collection bottle 10, and the lower end of the condenser tube 7 is provided with an upper guide tube 11 inclined upward. The upper guide tube 11 is embedded in the feed tube 12, which passes through the lower guide tube 71, the pressure reducing tube 8, the rotating body 3 and the distillation pipe in sequence and is connected to the rotating bottle 5.

[0022] In this embodiment, a retaining ring 121 is fitted on the feeding pipe 12 between one end of the embedded tube portion 72 and the rotating body 3. The outer wall of the retaining ring 121 is a conical surface that is narrower at the bottom and wider at the top. The maximum diameter of the retaining ring 121 is not less than the inner diameter of the embedded tube portion 72. When the solution boils violently, the splashed solution passes through the retaining ring 121 and is guided by the outer wall of its conical surface to the buffer protrusion 81 on the inner wall of the pressure reducing pipe 8, thereby effectively preventing some of the boiling liquid from splashing into the condenser pipe 7.

[0023] In this embodiment, an annular groove 82 is provided on the conical constriction outer wall between the conduit and the embedded tube 72. A sealing ring 83 is embedded in the groove 82. The sealing ring 83 presses against the inner wall of the conical surface of the pressure reducing pipe 8 to seal, thereby further improving the sealing effect and avoiding affecting the negative pressure state inside the pipeline.

[0024] In this embodiment, the outer wall of the lower end of the tube opening is tapered to facilitate smooth connection between the tube insertion part 72 and the pressure reducing tube.

[0025] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A catalyst solution vacuum evaporation apparatus, comprising a base (1), a rotary evaporator (2), a condenser (7), and a heating pot (6); the rotary evaporator (2) is mounted on the base (1), a rotating body (3) is connected to one side of the rotary evaporator (2) via a support arm, one end of the rotating body (3) is connected to a rotating flask (5) via a distillation pipe, and the lower end of the rotating flask (5) extends into the heating pot (6); the condenser (7) is mounted on the base via a bracket, and a lower guide tube (71) is inclined downward on one side of the lower end of the condenser (7), characterized in that, One end of the lower conduit (71) is tapered and connected to a tube insert (72). A pressure-reducing tube (8) is sleeved on the outside of the tube insert (72). The lower end of the pressure-reducing tube (8) is connected to the other end of the rotating body (3). Several buffer protrusions (81) are evenly distributed circumferentially on the inner wall of the end of the pressure-reducing tube (8) near the rotating body (3). The top of the buffer protrusions (81) is cone-shaped. The inner wall of the other end of the pressure-reducing tube (8) is fitted with the outer wall of the tube insert. The inner wall of the opening of the pressure-reducing tube (8) is tapered and flared and presses against the tapered outer wall of the lower conduit (71) to achieve a seal. A convex ring (811) is provided on the outer wall of one end of the pressure-reducing tube and on the outer wall of the conduit. The two convex rings (811) are clamped and fixed together by a clamp (9).

2. The catalyst solution vacuum evaporation apparatus as described in claim 1, characterized in that, The bottom end of the condenser tube (7) is connected to a collection bottle (10). The lower end of the condenser tube (7) is provided with an upper guide tube (11) that is inclined upward. A feeding tube (12) is embedded in the upper guide tube (11). The feeding tube (12) passes through the lower guide tube (71), the pressure reducing tube (8), the rotating body (3), and the distillation pipe in sequence and is connected to the rotating flask (5).

3. The catalyst solution vacuum evaporation apparatus as described in claim 2, characterized in that, A retaining ring (121) is fitted on the feeding tube (12) between one end of the embedded tube part (72) and the rotating body (3). The outer wall of the retaining ring (121) is a conical surface that is narrow at the bottom and wide at the top.

4. The catalyst solution vacuum evaporation apparatus as described in claim 3, characterized in that, The maximum diameter of the retaining ring (121) is not less than the inner diameter of the insert (72).

5. The catalyst solution vacuum evaporation apparatus as described in claim 1, characterized in that, An annular groove (82) is provided on the conical constriction outer wall between the conduit and the insert (72). A sealing ring (83) is embedded in the groove (82), and the sealing ring (83) presses against the inner wall of the conical surface of the pressure reducing tube (8) to seal.

6. The catalyst solution vacuum evaporation apparatus as described in claim 1, characterized in that, The outer wall of the lower end of the tube (72) is tapered.

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