Liquid collecting structure for rotary evaporator

Abstract

The liquid collecting structure comprises the rotary evaporator, a condensation pipe, a heating furnace and a feeding valve, the condensation pipe is fixed to the gas discharging end of the rotary evaporator, a liquid collecting assembly is connected to the bottom of the condensation pipe in a clamped mode, the liquid collecting assembly comprises a liquid collecting bottle and a clamping groove, and the liquid collecting bottle is connected with the heating furnace in a clamped mode. A clamping groove is formed in the inner side of a bottle opening of the liquid collecting bottle, a sealing anti-leakage assembly is clamped to the outer portion of the connecting position of the condensation pipe and the liquid collecting bottle and comprises a ball milling opening clamp, a sealing bag, a mounting frame, a sealing pipe, a sealing plug, a connecting rope and a fixing frame, and the sealing bag is clamped in the clamping groove of the liquid collecting bottle. The sealing bag is used for sealing the condenser pipe and the liquid collecting bottle, different from a traditional extrusion sealing mode, the connecting position is sealed in an expansion mode, and the situation that in the process of installing the liquid collecting bottle, a sealing piece needs to be extruded, and consequently the sealing piece is prone to abrasion and leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary evaporators, in particular to a liquid collecting structure for rotary evaporators. Background Art

[0002] Rotary evaporator, also known as rotary evaporator, is an evaporation instrument widely used in laboratories. This instrument can be used for a variety of processes, such as sample distillation extraction, concentration, crystallization, drying, separation and solvent recovery. This equipment is particularly suitable for the concentration of extracts and the distillation of receiving liquids during chromatographic separation. It can effectively separate and purify reaction products, and the separated gaseous substances are cooled and liquefied by the condenser and then enter the recovery bottle for recovery and storage.

[0003] However, in the existing rotary evaporator, the fixation of the condenser and the liquid collecting bottle is mainly achieved by the seal inside the bottle mouth and the stainless steel ball-milled mouth clamp. During the installation of the condenser and the liquid collecting bottle, the bottom of the condenser needs to be inserted into the seal of the liquid collecting bottle mouth. This fixing method is difficult to ensure complete sealing. There may be tiny gaps, resulting in liquid leakage, and in the process of squeezing the seal, the seal may break or the bottom liquid outlet of the condenser may collapse, which makes it easy for external gas to enter the liquid collecting bottle, resulting in the destruction of the vacuum environment of the liquid collecting bottle and the entire rotary evaporator. Therefore, technical personnel in this field have proposed a liquid collecting structure for a rotary evaporator to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a liquid collecting structure for a rotary evaporator is proposed. The liquid collecting structure for a rotary evaporator seals the condenser and the liquid collecting bottle through a sealing bag. Different from the traditional extrusion sealing form, the connection is sealed by expansion, which avoids the need to squeeze the seal during the process of loading the liquid collecting bottle, resulting in the wear and leakage of the seal.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquid collecting structure for a rotary evaporator comprises a rotary evaporator, a condenser, a heating furnace and a feed valve, the condenser is fixed on the gas discharge end of the rotary evaporator, a liquid collecting assembly is clamped at the bottom of the condenser, the liquid collecting assembly comprises a liquid collecting bottle and a clamping slot, the clamping slot is arranged on the inner side of the bottle mouth of the liquid collecting bottle, a sealing and leak-proof assembly is clamped on the outside of the connection between the condenser and the liquid collecting bottle, the sealing and leak-proof assembly comprises a ball milling mouth clamp, a sealing capsule, a mounting frame, a sealing tube, a sealing plug, a connecting rope and a fixing frame, the sealing capsule is clamped in the clamping slot of the liquid collecting bottle, the sealing tube is fixedly connected to the upper side wall of the sealing capsule, the mounting frame is fixedly connected to the inner side wall of the sealing tube near the bottom, the sealing plug is connected to the top of the mounting frame by a spring, the fixing frame is fixedly connected to the lower end surface of the upper side wall of the ball milling mouth clamp, and the connecting rope is connected between the fixing frame and the sealing plug;

[0007] Through the above technical scheme, the device seals the condenser and the liquid collecting bottle through the sealing bag. Different from the traditional extrusion sealing form, when loading the liquid collecting bottle, the ball mill clamp is first opened, and the sealing plug is pulled upward by the connecting rope. The gas stored in the sealing bag is partially drawn into the sealing tube, and then the bottom of the condenser is inserted into the sealing bag, and the ball mill clamp is released. At this time, the sealing plug is reset by the spring, and the gas is re-injected into the sealing bag, so that the sealing bag expands and resets again, and then wraps the bottom of the condenser. The device avoids the need to squeeze the seal during the loading of the liquid collecting bottle, which causes the seal to wear and leak.

[0008] Furthermore, a powdered water-absorbing resin is adhered to the inner wall of the sealing capsule;

[0009] Through the above technical solution, when the sealing bag is accidentally damaged, the overflowing steam contacts the powdered water-absorbing resin, causing the powdered water-absorbing resin to absorb water and become gel-like and expand in volume, which can temporarily replace the sealing bag to achieve the sealing effect and can remind the operator that the equipment is leaking.

[0010] Furthermore, a heating furnace is provided below the rotary evaporator, and the rotary bottle in the rotary evaporator is placed in the heating furnace;

[0011] Through the above technical solution, the rotary bottle of the rotary evaporator is heated by the heating furnace.

[0012] Furthermore, a feed valve is fixedly connected to the right side wall of the condenser tube, and the feed valve is connected to the material input end of the rotary evaporator;

[0013] According to the technical solution, materials are added into the rotary evaporator through the feed valve.

[0014] Furthermore, the liquid collecting assembly further comprises a drainage pipe, the drainage pipe is fixedly connected to the bottom of the liquid collecting bottle, and the other end of the drainage pipe is connected to a diaphragm valve via a flange;

[0015] Through the above technical scheme, the liquid formed by condensation is collected by a liquid collecting bottle, and the liquid recovered in the liquid collecting bottle is pumped into the anhydrous sodium sulfate filter by a pump. In order to prevent the connection between the pump and the liquid collecting bottle from being damaged, causing gas to mix into the liquid collecting bottle and destroying the vacuum environment in the liquid collecting bottle, a diaphragm valve is used to allow the recovered liquid to flow into the pump in a unidirectional manner, thereby fully ensuring the vacuum environment in the liquid collecting bottle and the rotary evaporator.

[0016] Furthermore, the top and bottom of the ball mill clamp are respectively clamped on the protrusion outside the condenser drain outlet and the protrusion outside the bottle mouth of the liquid collection bottle;

[0017] The above technical solution makes it easy to fix the condenser and the liquid collecting bottle by the ball mill clamp.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the condenser and the liquid collecting bottle are sealed by a sealing bag. After the bottom of the condenser is installed, it is inserted into the sealing bag, and the ball-milled mouth clamp is loosened. At this time, the sealing plug is reset under the drive of the spring, and the gas is re-injected into the sealing bag, so that the sealing bag expands and resets again, and then wraps the bottom of the condenser. This device avoids the need to squeeze the sealing part during the installation of the liquid collecting bottle, which causes the sealing part to be easily worn and leaked.

[0020] 2. In the utility model, when the ball mill mouth clamp is opened, the sealing plug is pulled upward by the connecting rope, and the gas stored in the sealing bag is partially drawn into the sealing tube. Then the bottom of the condenser tube is inserted into the sealing bag. The installation can be completed without pressurizing the sealing component, which is very convenient.

[0021] 3. In the utility model, when the sealing bag is accidentally damaged, the overflowing steam contacts the powdered water-absorbing resin, causing the powdered water-absorbing resin to absorb water and become gel-like and expand in volume, which can temporarily replace the sealing bag to achieve the sealing effect and can remind the operator that the equipment is leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a liquid collecting structure for a rotary evaporator proposed by the utility model;

[0023] Figure 2 This is a top schematic diagram of a liquid collecting structure for a rotary evaporator proposed by the utility model;

[0024] Figure 3This is a cross-sectional view of a liquid collecting structure for a rotary evaporator proposed by the utility model;

[0025] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0026] Legend:

[0027] 1. Rotary evaporator; 2. Condenser; 300. Liquid collecting assembly; 400. Sealing and anti-leakage assembly; 5. Diaphragm valve; 6. Heating furnace; 7. Feed valve; 301. Liquid collecting bottle; 302. Drain pipe; 303. Card slot; 401. Ball mill clamp; 402. Sealing capsule; 403. Mounting bracket; 404. Sealing tube; 405. Sealing plug; 406. Connecting rope; 407. Fixing bracket. DETAILED DESCRIPTION

[0028] 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.

[0029] Reference Figure 1-4 The utility model provides an embodiment: a liquid collecting structure for a rotary evaporator, comprising a rotary evaporator 1, a condenser 2, a heating furnace 6 and a feed valve 7, wherein the condenser 2 is fixed on the gas discharge end of the rotary evaporator 1, a liquid collecting assembly 300 is clamped at the bottom of the condenser 2, and the liquid collecting assembly 300 comprises a liquid collecting bottle 301 and a clamping groove 303, wherein the clamping groove 303 is arranged on the inner side of the bottle mouth of the liquid collecting bottle 301, and a sealing anti-leakage assembly 400 is clamped at the outside of the connection between the condenser 2 and the liquid collecting bottle 301, and the sealing anti-leakage assembly 400 comprises a ball mill Mouth clamp 401, sealing capsule 402, mounting frame 403, sealing tube 404, sealing plug 405, connecting rope 406 and fixing frame 407, the sealing capsule 402 is stuck in the card slot 303 of the liquid collecting bottle 301, and the inner wall of the sealing capsule 402 is adhered with powdered water-absorbing resin. When the sealing capsule 402 is accidentally damaged, the overflowing steam contacts the powdered water-absorbing resin, causing the powdered water-absorbing resin to absorb water and become gel-like and expand in volume, which can temporarily replace the sealing capsule 402 to achieve the sealing effect and can remind the operator that the equipment is leaking.

[0030] The sealing tube 404 is fixedly connected to the upper side wall of the sealing bag 402, the mounting frame 403 is fixedly connected to the inner side wall of the sealing tube 404 near the bottom, the sealing plug 405 is connected to the top of the mounting frame 403 by a spring, the fixing frame 407 is fixedly connected to the lower end surface of the upper side wall of the ball-milling clamp 401, the connecting rope 406 is connected between the fixing frame 407 and the sealing plug 405, and the top and bottom of the clamping mouth of the ball-milling clamp 401 are respectively clamped at the protrusion outside the drain outlet of the condenser tube 2 and the protrusion outside the bottle mouth of the liquid collecting bottle 301, so that the ball-milling clamp 401 can fix the condenser tube 2 and the liquid collecting bottle 301. When the liquid bottle 301 is loaded, the ball-milled mouth clamp 401 is first opened, and the sealing plug 405 is pulled upward by the connecting rope 406, and the gas stored in the sealing bag 402 is partially drawn into the sealing tube 404, and then the bottom of the condenser 2 is inserted into the sealing bag 402, and the ball-milled mouth clamp 401 is released. At this time, the sealing plug 405 is reset by the spring, and the gas is re-injected into the sealing bag 402, so that the sealing bag 402 expands and resets again, and then wraps the bottom of the condenser 2. This device avoids the need to squeeze the sealing component during the process of loading and unloading the liquid collection bottle 301, which causes the sealing component to be easily worn and leaked.

[0031] A heating furnace 6 is arranged below the rotary evaporator 1, and the rotary bottle in the rotary evaporator 1 is placed in the heating furnace 6, and the rotary bottle of the rotary evaporator 1 is heated by the heating furnace 6. A feed valve 7 is fixedly connected to the right side wall of the condenser 2, and the feed valve 7 is communicated with the material input end of the rotary evaporator 1, and materials are added to the rotary evaporator 1 through the feed valve 7. The liquid collecting component 300 also includes a discharge pipe 302, and the discharge pipe 302 is fixedly connected to the bottom of the liquid collecting bottle 301. The other end of the discharge pipe 302 is connected to a diaphragm valve 5 through a flange, and the liquid formed by condensation is collected by the liquid collecting bottle 301, and the liquid recovered in the liquid collecting bottle 301 is pumped into the anhydrous sodium sulfate filter through a pump. In order to prevent the connection between the pump and the liquid collecting bottle 301 from being damaged, causing gas to mix into the liquid collecting bottle 301 and destroying the vacuum environment in the liquid collecting bottle 301, the diaphragm valve 5 is used to make the recovered liquid flow into the pump in one direction, which fully ensures the vacuum environment in the liquid collecting bottle 301 and the rotary evaporator 1.

[0032] Working principle: The device heats the rotary bottle of the rotary evaporator 1 through the heating furnace 6, and adds materials to the rotary evaporator 1 through the feed valve 7. When the liquid collecting component 300 is loaded, the sealing capsule 402 is used to seal the condenser tube 2 and the liquid collecting bottle 301. Different from the traditional extrusion sealing form, when loading the liquid collecting bottle 301, the ball mill clamp 401 is first opened, and the sealing plug 405 is pulled upward by the connecting rope 406. The gas stored in the sealing capsule 402 is partially drawn into the sealing tube 404, and then the bottom of the condenser tube 2 is inserted into the sealing capsule 402, and the ball is loosened. The ground clamp 401, at this time, the sealing plug 405 is reset under the drive of the spring, and the gas is re-injected into the sealing bag 402, so that the sealing bag 402 expands and resets again, and then wraps the bottom of the condenser 2. This device avoids the seal being easily worn and leaked due to the need to squeeze the seal during the process of loading the liquid collecting bottle 301, and when the sealing bag 402 is accidentally damaged, the overflowing steam comes into contact with the powdered water-absorbing resin, causing the powdered water-absorbing resin to absorb water and become gel-like and expand in volume, which can temporarily replace the sealing bag 402 to achieve the sealing effect, and can also remind the operator that the equipment is leaking.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid collecting structure for a rotary evaporator, comprising a rotary evaporator (1), a condenser (2), a heating furnace (6) and a feed valve (7), characterized in that: The condenser (2) is fixed on the gas discharge end of the rotary evaporator (1); a liquid collecting component (300) is clamped at the bottom of the condenser (2); the liquid collecting component (300) comprises a liquid collecting bottle (301) and a clamping groove (303); the clamping groove (303) is arranged on the inner side of the bottle mouth of the liquid collecting bottle (301); a sealing anti-leakage component (400) is clamped on the outside of the connection between the condenser (2) and the liquid collecting bottle (301); the sealing anti-leakage component (400) comprises a ball mill mouth clamp (401), a sealing capsule (402), a mounting frame (403), a sealing tube (404), and a sealing plug (405). , a connecting rope (406) and a fixing frame (407), the sealing capsule (402) is clamped in the clamping groove (303) of the liquid collecting bottle (301), the sealing tube (404) is fixedly connected to the upper side wall of the sealing capsule (402), the mounting frame (403) is fixedly connected to the inner side wall of the sealing tube (404) near the bottom, the sealing plug (405) is connected to the top of the mounting frame (403) by a spring, the fixing frame (407) is fixedly connected to the lower end surface of the upper side wall of the ball mill clamp (401), and the connecting rope (406) is connected between the fixing frame (407) and the sealing plug (405).

2. The liquid collecting structure for a rotary evaporator according to claim 1, characterized in that: Powdered water-absorbing resin is adhered to the inner wall of the sealing bag (402).

3. The liquid collecting structure for a rotary evaporator according to claim 1, characterized in that: A heating furnace (6) is arranged below the rotary evaporator (1), and the rotary bottle in the rotary evaporator (1) is placed in the heating furnace (6).

4. The liquid collecting structure for a rotary evaporator according to claim 1, characterized in that: A feed valve (7) is fixedly connected to the right side wall of the condenser tube (2), and the feed valve (7) is connected to the material input end of the rotary evaporator (1).

5. The liquid collecting structure for a rotary evaporator according to claim 1, characterized in that: The liquid collecting assembly (300) further comprises a drainage pipe (302), wherein the drainage pipe (302) is fixedly connected to the bottom of the liquid collecting bottle (301), and the other end of the drainage pipe (302) is connected to a diaphragm valve (5) via a flange.

6. The liquid collecting structure for a rotary evaporator according to claim 1, characterized in that: The top and bottom of the ball mill mouth clamp (401) are respectively clamped on the protrusion outside the drainage outlet of the condenser tube (2) and the protrusion outside the bottle mouth of the liquid collection bottle (301).

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