Rotary evaporation water bath device

Abstract

The invention discloses a rotary evaporation water bath device, and particularly relates to the technical field of rotary evaporators, the rotary evaporation water bath device comprises a reagent bottle, a water bath kettle and a uniform temperature water bath mechanism; the uniform-temperature water bath mechanism comprises a water absorption assembly and an intermittent driving assembly; the water suction assembly comprises a hollow suction cylinder, a piston disc, a force application rod, an elastic spring, a plug and a sliding plug. The piston disc is slidably arranged in the suction cylinder, the lower end of the force application rod is fixed to the piston disc, and the intermittent driving assembly is in transmission connection with the upper end of the force application rod. A limiting ring is arranged on the inner wall of the tail end of the suction cylinder, an extension part is arranged at the lower end of the sliding plug, a water inlet hole is formed in the extension part, one end of the elastic spring abuts against the extension part, the other end of the elastic spring abuts against the limiting ring, the plug is fixed to the side wall of the limiting ring, a water inlet hole is formed in the middle of the plug, and the upper end of the sliding plug penetrates through the water inlet hole and then abuts against the upper end of the plug. When the reagent bottle is used, a reagent in the reagent bottle can be uniformly heated, so that the condition that the reagent in the reagent bottle is bumped due to different contact sites with a water bath is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of rotary evaporators, and in particular to a rotary evaporation water bath device. Background Art

[0002] The main function of the rotary evaporator is to achieve rapid separation of fractions by changing the pressure in the distillation system at a lower temperature. There are two main problems with the use of the rotary evaporator: 1. The reagents in the rotary evaporation volumetric flask are prone to violent boiling due to uneven heating. After violent boiling, the reagents will flow back into the rotary evaporation instrument, causing the experimenter to have to stop the experiment and clean the instrument. 2. The problem of airtightness. The volumetric flasks produced by some manufacturers have poor airtightness, which causes the reagents in the volumetric flask to not boil at a lower temperature, thereby greatly delaying the experimental process.

[0003] In response to the first problem encountered when using a rotary evaporator, Chinese invention patent CN2024102808581 discloses a rotary evaporator, which achieves uniform heating of the solution when the solution is heated by arranging stirring blades in the evaporation container bottle.

[0004] However, the above improvement method has defects as follows: 1. When the internal structure of the evaporation container bottle is improved, the airtightness between the evaporation container bottle and the rotary evaporator joint will be affected; 2. The reason for the uneven temperature of the reagents in the evaporation container bottle is that during the rotation of the evaporation container bottle, part of the reagents are driven along with the rotation of the evaporation container bottle, and the temperature of the reagents is inconsistent with that of the reagents that have been immersed in the water bath environment because they are out of the water bath environment, resulting in violent boiling. Therefore, adding stirring blades in the evaporation container bottle cannot fundamentally solve the problem. Summary of the invention

[0005] The invention provides a rotary evaporation water bath device. When the rotary evaporation water bath device is used, the reagent in the reagent bottle can be heated evenly, so as to avoid the occurrence of violent boiling of the reagent in the reagent bottle due to different contact points with the water bath.

[0006] The objective of the present invention is achieved through the following technical solutions: A rotary evaporation water bath device, comprising a reagent bottle, a water bath pot and a temperature-equalizing water bath mechanism; The temperature-equalizing water bath mechanism includes a water absorption component and an intermittent driving component; The water absorption component includes a hollow suction cylinder, a piston disk, a force rod, an elastic spring, a plug and a sliding plug; the piston disk is slidably arranged in the suction cylinder, the lower end of the force rod is fixed to the piston disk, and the intermittent drive component is transmission-connected to the upper end of the force rod; a limiting ring is provided on the inner wall of the end of the suction cylinder, an extension portion is provided at the lower end of the sliding plug, a water inlet hole is provided on the extension portion, one end of the elastic spring is tightly pressed against the extension portion, and the other end is tightly pressed against the limiting ring, the plug is fixed to the side wall of the limiting ring, a water inlet hole is provided in the middle of the plug, and the upper end of the sliding plug is inserted into the water inlet hole and tightly pressed against the upper end of the plug.

[0007] The temperature-equalizing water bath mechanism uses a water curtain shower on the rotating reagent bottle, and the water source comes from the water bath pot, so that the part of the reagent bottle that is out of the water bath environment after rotation can be kept warm by the water curtain shower, thereby reducing the temperature difference of the reagent and avoiding violent boiling.

[0008] Preferably, the water absorption assembly further comprises a water outlet curtain plate and a water pipe, one end of the water pipe is connected to the suction cylinder, and the other end is connected to the water outlet curtain plate, and a space for installing a reagent bottle is reserved between the water outlet curtain plate and the water bath.

[0009] Preferably, the intermittent drive assembly comprises a transmission plate, a transmission wheel, an arc-shaped transmission plate, a fixed rod, a telescopic rod, a drive position conversion member and a drive motor; The transmission wheel and the transmission plate are meshed and transmission connected, the transmission plate and the upper end of the force applying rod are fixed, and the transmission wheel is meshed and transmission connected with the arc-shaped transmission plate; the output end of the driving orientation conversion member is fixed to the telescopic rod, and the telescopic rod is slidably sleeved in the hollow interior of the fixed rod, the fixed rod is fixed to the arc-shaped transmission plate, and the output end of the driving motor is transmission connected with the driving orientation conversion member.

[0010] The advantage of the intermittent drive assembly is that warm water can be periodically supplied to the top of the reagent bottle. Since the reagent bottle rotates during operation, periodically showering the reagent bottle can prevent warm water splashing caused by excessive water supply.

[0011] Preferably, the intermittent drive assembly further comprises a return spring, wherein the return spring is installed in the hollow interior of the fixed rod, and the telescopic rod is fixed to the return spring.

[0012] Preferably, the driving orientation conversion member comprises a linear slide block, an arcuate slide block, a slider, a long-distance connecting rod and a short-distance connecting rod; The linear slide block is provided with a linear slide groove, the arc slide block is fixed to the upper end of the linear slide block, the arc slide block is provided with an arc slide groove, and the arc slide groove is connected to the linear slide groove; both side ends of the slider are provided with sliding protrusions, and the sliding protrusions are adapted to slide in the arc slide groove; one end of the long-distance connecting rod is rotatably connected to the slider, and the other end is rotatably connected to the short-distance connecting rod.

[0013] Among them, the driving direction conversion component periodically drives the force rod to work, giving the warm water time to fall along the reagent bottle, so that the warm water forms a water curtain above the reagent bottle and then flows down, thereby achieving the insulation function to a greater extent.

[0014] Preferably, the driving orientation conversion member further comprises a rotating column, and one end of the long-distance connecting rod facing away from the short-distance connecting rod is rotatably connected to the rotating column.

[0015] Preferably, a fixed seat is provided on the linear slide block, the short-distance connecting rod is rotatably connected to the fixed seat through a shaft, and the output end of the drive motor is connected to the transmission.

[0016] Preferably, a supporting slide block is provided on the inner side of the linear slide block, and the sliding block is slidably mounted on the upper end of the supporting slide block.

[0017] Preferably, a fixing plate is provided below the water bath, and a control panel is provided on the fixing plate.

[0018] Compared with the prior art, the advantages or beneficial effects of the technical solution of the present application include: 1. By installing a temperature-equalizing water bath mechanism, a heat-insulating water curtain can be formed above the reagent bottle to prevent the reagent from losing temperature when the reagent bottle is rotated and driven by the inner wall of the reagent bottle, thereby causing violent boiling after reagents of different temperatures are mixed.

[0019] 2. Only the outer end of the reagent bottle is insulated by physical means, and the original matching reagent bottle and rotary evaporator structure are retained, which ensures the airtight performance to a greater extent and can greatly increase the efficiency of fraction collection.

[0020] 3. When pouring warm water on the reagent bottle, the water source comes from the water bath, which ensures that the temperature difference of the reagents in each internal space of the reagent bottle is very small, thereby avoiding boiling after mixing. In addition, the reagents do not lose temperature during the heating process, which can also speed up the efficiency of distillation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a rotary evaporation water bath device (front and side view); Figure 2 A schematic diagram of the three-dimensional structure of a rotary evaporation water bath device (dorsal view); Figure 3It is a three-dimensional structural schematic diagram of the temperature-equalizing water bath mechanism; Figure 4 It is a schematic diagram of the cross-sectional structure of the temperature-equalizing water bath mechanism; Figure 5 It is a driving state diagram of the driving azimuth conversion member; Figure 6 The driving state diagram of the driving position conversion component ( Figure 5 The telescopic rod is driven counterclockwise on the basis); Figure 7 This is an application scenario diagram of a rotary evaporation water bath device.

[0022] In the figure: 1, water curtain plate, 2, water pipe, 3, arc-shaped transmission plate, 4, telescopic rod, 5, arc-shaped slide block, 6, rotating column, 7, fixed seat, 8, short-distance connecting rod, 9, long-distance connecting rod, 10, linear slide block, 11, slider, 12, sliding convex part, 13, fixed rod, 14, transmission wheel, 15, transmission plate, 16, suction cylinder, 17, force rod, 18, arc-shaped slide groove, 21, linear slide groove, 22, support slide block, 23, reset spring, 24, piston disk, 25, plug, 26, elastic spring, 27, sliding plug, 28, fixed plate, 29, control panel, 31, water bath, 32, reagent bottle, 35, drive motor. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the protection scope of the present application.

[0024] It should be clear that the embodiments described below are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in the relevant field without making creative work are within the scope of protection of the present application. Example 1

[0025] A rotary evaporation water bath device, comprising a reagent bottle 32, a water bath pot 31 and a temperature-equalizing water bath mechanism; The temperature-equalizing water bath mechanism includes a water absorption component and an intermittent driving component; The water absorption component includes a hollow suction cylinder 16, a piston disk 24, a force rod 17, an elastic spring 26, a plug 25 and a sliding plug 27; the piston disk 24 is slidably arranged in the suction cylinder 16, the lower end of the force rod 17 is fixed to the piston disk 24, and the intermittent drive component is transmission-connected to the upper end of the force rod 17; a limiting ring is provided on the inner wall of the end of the suction cylinder 16, an extension portion is provided at the lower end of the sliding plug 27, a water inlet hole is provided on the extension portion, one end of the elastic spring 26 is tightly pressed against the extension portion, and the other end is tightly pressed against the limiting ring, the plug 25 is fixed to the side wall of the limiting ring, a water inlet hole is provided in the middle of the plug 25, and the upper end of the sliding plug 27 is inserted through the water inlet hole and tightly pressed against the upper end of the plug 25.

[0026] In addition, the water absorption component also includes a water outlet curtain plate 1 and a water pipe 2, one end of the water pipe 2 is connected to the suction cylinder 16, and the other end is connected to the water outlet curtain plate 1, and a space for installing a reagent bottle 32 is reserved between the water outlet curtain plate 1 and the water bath pot 31.

[0027] Internal connection relationship and working principle of water absorption components: like Figure 3 and Figure 4 As shown, when the intermittent driving assembly drives the force rod 17 to move up and down in the suction cylinder 16, the piston disk 24 fixed to the lower end of the force rod 17 will move up and down accordingly, thereby causing negative pressure inside the suction cylinder 16, thereby attracting the warm water in the water bath 31 to enter the water outlet curtain plate 1 through the water pipe 2.

[0028] When the water suction operation is performed: the force rod 17 drives the piston plate 24 to move upward along the suction cylinder 16, and at this time, due to the effect of negative pressure, the sliding plug 27 will also move upward. When the sliding plug 27 moves upward, the extension part compresses the elastic spring 26, and the upper end of the sliding plug 27 moves upward, so that the state of the sliding plug 27 originally pressed against the water inlet hole on the plug 25 is changed to a gap between the upper end and the water inlet hole for water to pass through, so that water enters from the extension part and flows into the suction cylinder 16 from the water inlet hole.

[0029] Although the water pipe 2 is also connected to the suction cylinder, the reason why water still enters from the lower end of the suction cylinder 16 is: 1. The water pipe 2 is connected to the water outlet curtain plate 1, and its potential is higher than the end of the suction cylinder 16. Moreover, the elastic spring 26 only plays a role of elastic recovery and is easy to deform.

[0030] 2. After the warm water flows out of the water curtain plate 1, there is no water in the water pipe 2. The water outlet on the water curtain plate 1 is small, and the air intake is not as easy as the end of the suction cylinder 16, so under negative pressure suction, the end of the suction cylinder 16 will first suck in warm water.

[0031] In this embodiment, the intermittent drive assembly includes a transmission plate 15 , a transmission wheel 14 , an arc-shaped transmission plate 3 , a fixed rod 13 , a telescopic rod 4 , a drive position conversion member and a drive motor 35 .

[0032] The transmission wheel 14 and the transmission plate 15 are meshed and transmission connected, the transmission plate 15 and the upper end of the force applying rod 17 are fixed, and the transmission wheel 14 is meshed and transmission connected with the arc-shaped transmission plate 3; the output end of the driving direction conversion member is fixed to the telescopic rod 4, the telescopic rod 4 is slidably sleeved in the hollow interior of the fixed rod 13, the fixed rod 13 is fixed to the arc-shaped transmission plate 3, and the output end of the driving motor 35 is transmission connected with the driving direction conversion member.

[0033] The intermittent drive assembly further includes a return spring 23 , which is installed in the hollow interior of the fixed rod 13 , and the telescopic rod 4 is fixed to the return spring 23 .

[0034] Meanwhile, the driving orientation conversion component includes a linear slide block 10 , an arcuate slide block 5 , a slider 11 , a long-distance connecting rod 9 , a short-distance connecting rod 8 and a rotating column 6 .

[0035] The linear slide block 10 is provided with a linear slide groove 21, and the arc slide block 5 is fixed to the upper end of the linear slide block 10. The arc slide block 5 is provided with an arc slide groove 18, and the arc slide groove 18 is connected to the linear slide groove 21; both sides of the slider 11 are provided with sliding protrusions 12, and the sliding protrusions 12 are adapted to slide in the arc slide groove and the arc slide groove; one end of the long-distance connecting rod 9 is rotatably connected to the slider 11, and the other end is rotatably connected to the short-distance connecting rod 8. The end of the long-distance connecting rod 9 facing away from the short-distance connecting rod 8 is rotatably connected to the rotating column 6. A fixed seat 7 is provided on the linear slide block 10, and the short-distance connecting rod 8 is rotatably connected to the fixed seat 7 through a shaft, and the output end of the driving motor 35 is connected to the transmission. A supporting slide block 22 is provided on the inner side of the linear slide block 10, and the slider 11 is slidably installed on the upper end of the supporting slide block 22.

[0036] like Figure 3 and Figure 4 As shown, the internal components and working principles of the drive position conversion component and intermittent drive component are as follows: For drive position conversion parts: When the driving shaft of the driving motor 35 rotates, the short-distance connecting rod 8 is driven to rotate, and when the short-distance connecting rod 8 rotates, the long-distance connecting rod 9 connected to it is driven to rotate. The end of the long-distance connecting rod 9 applies a thrust to the rotating column 6, thereby causing the slider 11 to slide.

[0037] When the slider 11 slides, it drives the telescopic rod fixed thereto to perform circular motion and linear motion. Figure 5 and Figure 6 As shown, the slider 11 drives the telescopic rod 4 slowly from the vertical state to the horizontal state. Figure 6It can be seen that the sliding protrusion 12 on the slider 11 will slide along the arc-shaped sliding groove 18 into the linear sliding groove 21 .

[0038] Furthermore, the purpose of setting the telescopic rod 4 and the fixed rod 13 to be sleeved is that when the telescopic rod 4 is in a horizontal state and the short-distance connecting rod is driven to the right side of the fixed seat 7, the telescopic rod 4 will be stretched toward the side of the fixed seat 7, so the movement path is realized by the telescopic cooperation of the telescopic rod 4 and the fixed rod 13. And because of the existence of this movement path, the circular reciprocating motion of the telescopic rod 4 is realized, and it is discontinuous, giving time for the warm water to flow down the reagent bottle 32.

[0039] For the intermittent drive component: as the telescopic rod 4 rotates, the arc-shaped transmission plate 3 will drive the transmission wheel 14 to rotate (the transmission wheel 14 and the arc-shaped transmission plate 3 are always in synchronous meshing and rotation), so the rotation of the transmission wheel 14 can drive the transmission plate 15 to move up and down, thereby realizing the up and down reciprocating drive of the force applying rod 17.

[0040] In this embodiment, a fixing plate 28 is provided below the water bath 31 , and a control panel 29 is provided on the fixing plate 28 . Example 2

[0041] like Figure 1 , Figure 2 It can be seen from the application example that when the reagent bottle rotates, the side close to its bottom end is in direct contact with the water bath, while its upper end is arranged on the lower side of the water outlet curtain plate 1, which makes the local temperature difference of the reagent placed in the reagent bottle small and avoids the occurrence of violent boiling.

[0042] And in Figure 7 In the experiment, since there is no temperature-equalizing water bath mechanism installed, the experimenter needs to be on duty to observe (decompress and ventilate), add zeolite into the reagent bottle, etc. Compared with the solution provided in this application, the experimental efficiency is too low.

Claims

1. A rotary evaporation water bath device, comprising a reagent bottle (32) and a water bath pot (31), characterized in that: Also included is a temperature-equalizing water bath mechanism; The temperature-equalizing water bath mechanism includes a water absorption component and an intermittent driving component; The water absorption component comprises a hollow suction cylinder (16), a piston disc (24), a force application rod (17), an elastic spring (26), a plug (25) and a sliding plug (27); The piston disc (24) is slidably disposed in the suction cylinder (16); the lower end of the force-applying rod (17) is fixed to the piston disc (24); and the intermittent driving component is transmission-connected to the upper end of the force-applying rod (17); A limiting ring is provided on the inner wall of the end of the suction cylinder (16); an extension portion is provided at the lower end of the sliding plug (27); a water inlet hole is provided on the extension portion; one end of the elastic spring (26) is tightly abutted against the extension portion, and the other end is tightly abutted against the limiting ring; the plug (25) is fixed to the side wall of the limiting ring; a water inlet hole is provided in the middle of the plug (25); and the upper end of the sliding plug (27) is inserted into the water inlet hole and tightly abutted against the upper end of the plug (25).

2. A rotary evaporation water bath device according to claim 1, characterized in that: The water absorption assembly further comprises a water outlet curtain plate (1) and a water pipe (2); one end of the water pipe (2) is connected to the suction cylinder (16), and the other end is connected to the water outlet curtain plate (1); a space for installing a reagent bottle (32) is reserved between the water outlet curtain plate (1) and the water bath (31).

3. A rotary evaporation water bath device according to claim 1, characterized in that: The intermittent drive assembly comprises a transmission plate (15), a transmission wheel (14), an arc-shaped transmission plate (3), a fixed rod (13), a telescopic rod (4), a drive orientation conversion member and a drive motor (35); The transmission wheel (14) and the transmission plate (15) are meshed and transmission-connected, the transmission plate (15) and the upper end of the force-applying rod (17) are fixed to each other, and the transmission wheel (14) and the arc-shaped transmission plate (3) are meshed and transmission-connected; The output end of the driving orientation conversion member is fixed to the telescopic rod (4), the telescopic rod (4) is slidably sleeved in the hollow interior of the fixed rod (13), the fixed rod (13) is fixed to the arc-shaped transmission plate (3), and the output end of the driving motor (35) is drivingly connected to the driving orientation conversion member.

4. A rotary evaporation water bath device according to claim 3, characterized in that: The intermittent drive assembly further comprises a return spring (23), wherein the return spring (23) is installed in the hollow interior of the fixed rod (13), and the telescopic rod (4) is fixed to the return spring (23).

5. A rotary evaporation water bath device according to claim 3, characterized in that: The driving orientation conversion component comprises a linear slide block (10), an arc-shaped slide block (5), a slider (11), a long-distance connecting rod (9) and a short-distance connecting rod (8); The linear slide block (10) is provided with a linear slide groove (21), the arcuate slide block (5) is fixed to the upper end of the linear slide block (10), the arcuate slide block (5) is provided with an arcuate slide groove (18), and the arcuate slide groove (18) and the linear slide groove (21) are connected; Both side ends of the sliding block (11) are provided with sliding protrusions (12), and the sliding protrusions (12) are adapted to slide in the arc-shaped sliding groove; One end of the long-distance connecting rod (9) is rotatably connected to the slider (11), and the other end is rotatably connected to the short-distance connecting rod (8).

6. A rotary evaporation water bath device according to claim 5, characterized in that: The driving orientation conversion member further comprises a rotating column (6), and one end of the long-distance connecting rod (9) facing away from the short-distance connecting rod (8) is rotatably connected to the rotating column (6).

7. A rotary evaporation water bath device according to claim 5, characterized in that: A fixed seat (7) is provided on the linear slide block (10), the short-distance connecting rod (8) is rotatably connected to the fixed seat (7) via a shaft, and the output end of the drive motor (35) is connected to the transmission.

8. A rotary evaporation water bath device according to claim 5, characterized in that: A supporting slide block (22) is provided inside the linear slide block (10), and the sliding block (11) is slidably mounted on the upper end of the supporting slide block (22).

9. A rotary evaporation water bath device according to claim 5, characterized in that: A fixing plate (28) is provided below the water bath (31), and a control panel (29) is provided on the fixing plate (28).

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