Rectification device for laboratory

Abstract

The utility model belongs to the technical field of rectifying equipment, and provides a rectifying device for a laboratory, which comprises a frame body, an electric jacket, a mounting piece, and a flask, a condenser pipe and a material receiving bottle which are fixedly arranged on the frame body, the electric jacket is arranged on the frame body, a hemispherical heating groove is arranged at the top of the electric jacket, the flask is positioned in the heating groove, and the condenser pipe is arranged on the mounting piece. The flask, the condenser pipe and the material receiving bottle are connected in sequence; the two semicircular mounting parts are symmetrically arranged at the top of the electric heating sleeve and arranged on the outer side of the top of the heating groove in a surrounding mode, the two mounting parts are arranged at the top of the electric heating sleeve in a relatively sliding mode through adjusting rods, and liquid absorption cotton strips are bonded to the arc-shaped side walls, close to the heating groove, of the mounting parts and arranged on the outer side of the flask in a surrounding mode. According to the technical scheme, the problem that in the using process of an existing rectification device, liquid in the flask flows out accidentally, so that normal use of the electric heating sleeve is affected, and even the electric heating sleeve is damaged is solved.

Description

Technical Field

[0001] The utility model relates to a distillation device, in particular to a distillation device for laboratory use. Background Art

[0002] Distillation is a separation process that uses the different volatilities of the components in a mixture to separate them. Distillation devices are often used in laboratories to extract chemical components. Currently, most laboratory distillation devices use an assembly structure that places a flask, condenser, and receiving bottle on a frame, and heats the flask with an electric heating jacket to conduct distillation experiments. However, if the liquid in the flask accidentally flows out during the experiment, it is very easy to flow into the heating tank of the electric heating jacket and affect the normal use of the electric heating jacket, and even damage the electric heating jacket. Moreover, after the operation is completed, since the flask needs to be in the heating tank of the electric heating jacket, it is not easy to take out and clean the flask. Utility Model Content

[0003] The main purpose of the utility model is to provide a laboratory distillation device to solve the problem that during the use of the existing distillation device, the liquid in the flask accidentally flows out, affecting the normal use of the electric heating mantle or even damaging it.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A laboratory distillation device comprises a frame, an electric heating jacket, and a flask, a condenser and a material receiving bottle all fixedly arranged on the frame, wherein the electric heating jacket is arranged on the frame, a hemispherical heating groove is provided on the top of the electric heating jacket, the flask is located in the heating groove, and the flask, the condenser and the material receiving bottle are connected in sequence;

[0006] Also includes:

[0007] The mounting piece is semi-annular, and there are two of the mounting pieces, which are symmetrically arranged on the top of the electric heating jacket and arranged around the top outer side of the heating tank. The two mounting pieces are relatively slidably arranged on the top of the electric heating jacket through an adjusting rod. A liquid-absorbing cotton strip is bonded to the arc-shaped side wall of the mounting piece close to the heating tank, and the liquid-absorbing cotton strip is arranged around the outside of the flask.

[0008] As a further technical solution, two mounting ears are symmetrically arranged on the side wall of the mounting member away from the absorbent cotton strip, the mounting ears are fixedly connected to the mounting member, and threaded holes are opened on the mounting ears;

[0009] There are two adjusting rods, which are rotatably arranged on both sides of the heating tank. The side walls at both ends of the adjusting rods are provided with threads with opposite winding directions, and the two ends of each adjusting rod are respectively inserted into the threaded holes of the mounting ears on the same side of the two mounting parts.

[0010] As a further technical solution, the electric heating jacket is lifted and arranged at the bottom of the frame, and the lifting device includes:

[0011] A mounting groove, the mounting groove is opened at the bottom of the frame, and two first sliding blocks are slidably provided on two opposite inner side walls of the mounting groove;

[0012] A lifting seat, the lifting seat is located above the mounting groove, two second sliding blocks are slidably arranged at both ends of the bottom of the lifting seat, and the electric heating sleeve is arranged on the top of the lifting seat;

[0013] A first connecting rod, wherein there are two first connecting rods, the bottoms of the two first connecting rods are rotatably connected to the two first sliding blocks respectively, and the tops of the two first connecting rods are rotatably connected to the two second sliding blocks respectively;

[0014] A second connecting rod, wherein there are two second connecting rods, the two second connecting rods respectively cross the two first connecting rods and are rotatably connected at the intersection, the bottom of the second connecting rod is rotatably arranged on the inner wall of the mounting groove, and the top of the second connecting rod is rotatably arranged at the bottom of the lifting seat;

[0015] A driving device drives the first sliding block to slide.

[0016] As a further technical solution, the driving device includes:

[0017] A connecting rod, both ends of which are fixedly connected to the two first sliding blocks respectively;

[0018] A wire block, the wire block is fixedly arranged in the middle of the connecting rod;

[0019] A screw rod is rotatably arranged on the frame and is passed through the wire block to drive the wire block to slide.

[0020] A handle is fixedly connected to one end of the screw rod.

[0021] As a further technical solution, a cylindrical groove body is provided on the top of the lifting seat, and the electric heating jacket is placed in the groove body.

[0022] As a further technical solution, the flask and the condenser are connected via an electric heating and heat preservation tower, and the electric heating and heat preservation tower is fixedly arranged on the frame.

[0023] As a further technical solution, the condenser is connected to the material receiving bottle via a material receiving pipe, and the material receiving pipe is fixedly arranged on the frame.

[0024] As a further technical solution, a vacuum tube is connected between the condenser and the material receiving tube. The vacuum tube is fixed on the frame. A vacuum port for connecting to a vacuum pump is provided on the vacuum tube.

[0025] As a further technical solution, the middle portion of the material receiving tube is connected to a sampling bottle, and the sampling bottle is fixedly arranged on the frame.

[0026] The beneficial effects of the utility model are:

[0027] The utility model has a simple structure. By setting a mounting piece, bonding a liquid-absorbing cotton strip on the arc-shaped inner side surface of the mounting piece, and then sliding the mounting piece to cover the liquid-absorbing cotton strip on the outer side of the flask, if the liquid in the flask accidentally flows out, the liquid-absorbing cotton strip can absorb the liquid to avoid flowing into the heating groove of the electric heating jacket to affect the normal use and damage of the electric heating jacket. The utility model is safe, reliable and practical. The liquid-absorbing cotton strip is bonded to the mounting piece for easy replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a three-dimensional structural schematic diagram of the mounting part, electric heating sleeve and lifting device of the utility model;

[0031] Figure 3 It is a top view structural diagram of the mounting member and the adjusting rod of the utility model;

[0032] Figure 4 It is a cross-sectional structural schematic diagram of the lifting device of the utility model.

[0033] Description of Reference Numerals

[0034] 1. Frame; 2. Electric heating jacket; 20. Heating tank; 3. Flask; 4. Condenser; 5. Receiving bottle; 6. Mounting parts; 7. Liquid-absorbing cotton strip; 8. Mounting ear; 9. Adjusting rod; 10. Lifting device; 101. Mounting tank; 102. Lifting seat; 103. First connecting rod; 104. Second connecting rod; 105. Driving device; 1051. Connecting rod; 1052. Wire block; 1053. Screw; 1054. Handle; 11. Tank body; 12. Electric heating and insulation tower; 13. Receiving pipe; 14. Vacuum tube; 15. Sampling bottle. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0036] like Figure 1-Figure 4 As shown, the utility model proposes a laboratory distillation device, which mainly includes a frame 1, an electric heating jacket 2, a mounting member 6, and a flask 3, an electric heating insulation tower 12, a distillation head, a condenser 4, a vacuum tube 14, a material receiving pipe 13 and a material receiving bottle 5, which are all fixedly mounted on the frame 1 through connecting members and connected in sequence. The electric heating jacket 2 is arranged on the frame 1, and a hemispherical heating groove 20 is provided on the top of the electric heating jacket 2. The flask 3 is located in the heating groove 20. A one-way spiral inner tube is provided inside the condenser 4, and two interfaces are provided on the spiral inner tube for connecting with a cold medium. This is a prior art and will not be described in detail here. A vacuum port for connecting to a vacuum pump is provided on the vacuum tube 14, and the material receiving pipe 13 is arranged obliquely. The middle part of the material receiving pipe 13 is connected to a sampling bottle 15, and the sampling bottle 15 is fixedly arranged on the frame 1 for sampling.

[0037] There are two mounting members 6, both of which are semi-annular and relatively arranged, and are symmetrically arranged on the top of the electric heating sleeve 2, and are arranged around the top outer side of the heating groove 20. The two mounting members 6 are relatively slidably arranged on the top of the electric heating sleeve 2 through an adjusting rod 9. Specifically, two mounting ears 8 are symmetrically arranged on the side wall of the mounting member 6 away from the absorbent cotton strip 7. The mounting ears 8 are fixedly connected to the mounting member 6, and threaded holes are opened on the mounting ears 8. There are two adjusting rods 9, which are rotatably arranged on both sides of the heating groove 20. Threads with opposite winding directions are arranged on the side walls of the two ends of the adjusting rod 9, and the two ends of each adjusting rod 9 are respectively inserted into the threaded holes of the mounting ears 8 on the same side of the two mounting members 6. Limit blocks are arranged at both ends of the adjusting rod 9, which is beneficial to prevent the mounting ears 8 from detaching from the adjusting rod 9. The limit blocks can also be held by hand when rotating the adjusting rod 9, so as to facilitate the rotation adjustment of the adjusting rod 9. A liquid-absorbing cotton strip 7 is bonded to the curved side wall of the mounting member 6 close to the heating tank 20, and the liquid-absorbing cotton strip 7 is arranged around the outside of the flask 3. Specifically, a Velcro is arranged on the curved side wall of the mounting member 6 close to the heating tank 20, and the liquid-absorbing cotton strip 7 can be bonded to the side wall of the mounting member 6 through the Velcro, which is convenient and practical.

[0038] The electric heating jacket 2 is lifted and arranged at the bottom of the frame 1. The lifting device 10 includes a mounting groove 101, a lifting seat 102, a first connecting rod 103, a second connecting rod 104 and a driving device 105. The mounting groove 101 is opened at the bottom of the frame 1. Two first sliding blocks are slidably arranged on the two opposite inner side walls of the mounting groove 101. The lifting seat 102 is located above the mounting groove 101. Two second sliding blocks are slidably arranged at both ends of the bottom of the lifting seat 102. The sliding direction of the second sliding block is located in the same vertical plane as the sliding direction of the first sliding block, and the second sliding block always slides in the opposite direction to the first sliding block. A cylindrical groove body 11 is opened on the top of the lifting seat 102. The electric heating jacket 2 is placed in the groove body 11. The diameter of the groove body 11 is slightly larger than the outer diameter of the electric heating jacket 2, which is conducive to limiting the position of the electric heating jacket 2 on the lifting seat 102 to avoid shaking, and is also conducive to ensuring that the flask 3 smoothly enters the heating groove 20; the first connecting rod 103 is used to adjust the position of the electric heating jacket 2 on the lifting seat 102. There are two rods 103, the bottoms of the two first connecting rods 103 are rotatably connected to the two first sliders, and the tops are rotatably connected to the two second sliders. There are two second connecting rods 104, and the two second connecting rods 104 are respectively crossed with the two first connecting rods 103 and rotatably connected at the intersection. The bottom of the second connecting rod 104 is rotatably set on the inner wall of the mounting groove 101, and the top is rotatably set at the bottom of the lifting seat 102. The driving device 105 drives the first slider to slide. The driving device 105 includes a connecting rod 1051, a wire block 1052, a screw rod 1053 and a handle 1054. The two ends of the connecting rod 1051 are respectively fixedly connected to the two first sliders, the wire block 1052 is fixedly set in the middle of the connecting rod 1051, the screw rod 1053 is rotatably set on the frame 1, and is penetrated on the wire block 1052 to drive the wire block 1052 to slide, and the handle 1054 is fixedly connected to one end of the screw rod 1053.

[0039] During use of this embodiment, after the flask 3, the electric heating insulation tower 12, the distillation head, the condenser 4, the vacuum tube 14, the material receiving pipe 13 and the material receiving bottle 5 are fixed on the frame 1, the electric heating jacket 2 is placed in the groove body 11 of the lifting seat 102, and then the handle 1054 is rotated, the handle 1054 drives the screw rod 1053 to rotate, the screw rod 1053 drives the nut to slide thereon, and the nut drives the first slider to slide on the side wall of the installation groove 101, thereby driving the lower end of the first connecting rod 103 to approach the second connecting rod 104, and driving the lifting seat 102 to rise in cooperation with the second connecting rod 104, so that the electric heating jacket 2 rises until its heating groove 20 is in contact with the bottom of the flask 3, and then the handle 1054 is stopped to complete the determination of the position of the electric heating jacket 2.

[0040] In the above operation state, the two mounting parts 6 are in a state of being away from each other, and a new absorbent cotton strip 7 is bonded to each mounting part 6. After the above steps are completed, the two adjusting rods 9 are rotated at the same time. Since the threads at both ends of the adjusting rods 9 are rotated in opposite directions, the two mounting ears 8 thereon are driven to approach each other when the adjusting rods 9 rotate, so that the two mounting parts 6 and the absorbent cotton strips 7 thereon are fitted around the outside of the flask 3. When liquid accidentally flows out due to boiling or other reasons, the absorbent cotton strips 7 can absorb the liquid and prevent it from flowing into the heating tank 20. At the same time, the mounting parts 6 and the absorbent cotton strips 7 can also further limit the position of the flask 3 to prevent the flask 3 from tilting. At this time, the absorbent cotton strips 7 can play a buffering role to prevent the mounting parts 6 from directly contacting the flask 3 and causing damage to the flask 3.

[0041] When the experiment is over, the two adjusting rods 9 and the screw rod 1053 are rotated in the opposite direction respectively, so that the mounting member 6 and the lifting platform are reset in sequence, and the flask 3 is now successfully separated from the heating tank 20 of the electric heating jacket 2. If the absorbent cotton strip 7 has absorbed liquid, the absorbent cotton strip 7 is torn off and thrown away, and a new absorbent cotton strip 7 is adhered to the mounting member 6 to avoid chemical reagent contamination, which is convenient and practical. If there is no liquid on the absorbent cotton strip 7 after the experiment, it can be used in the next experiment to avoid waste.

[0042] The above description is only a preferred embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of 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.

Claims

1. A laboratory distillation device, comprising a frame (1), an electric heating jacket (2), and a flask (3), a condenser (4), and a material receiving bottle (5) all fixedly arranged on the frame (1), the electric heating jacket (2) being arranged on the frame (1), a hemispherical heating groove (20) being provided on the top of the electric heating jacket (2), the flask (3) being located in the heating groove (20), and the flask (3), the condenser (4), and the material receiving bottle (5) being connected in sequence; It is characterized in that Also includes: The mounting member (6) is semi-annular. There are two mounting members (6) symmetrically arranged on the top of the electric heating jacket (2) and arranged around the top outside of the heating tank (20). The two mounting members (6) are relatively slidably arranged on the top of the electric heating jacket (2) via an adjusting rod (9). A liquid-absorbing cotton strip (7) is bonded to the arc-shaped side wall of the mounting member (6) close to the heating tank (20). The liquid-absorbing cotton strip (7) is arranged around the outside of the flask (3).

2. A laboratory distillation device as claimed in claim 1, characterized in that: Two mounting ears (8) are symmetrically arranged on the side wall of the mounting member (6) away from the absorbent cotton strip (7), the mounting ears (8) are fixedly connected to the mounting member (6), and threaded holes are formed on the mounting ears (8); There are two adjusting rods (9) rotatably arranged on both sides of the heating groove (20), and threads with opposite winding directions are arranged on the side walls at both ends of the adjusting rods (9), and the two ends of each adjusting rod (9) are respectively inserted into the threaded holes of the mounting ears (8) on the same side of the two mounting parts (6).

3. A laboratory distillation device as claimed in claim 1, characterized in that: The electric heating jacket (2) is lifted and arranged at the bottom of the frame (1) by means of a lifting device (10), wherein the lifting device (10) comprises: An installation groove (101), the installation groove (101) being disposed at the bottom of the frame body (1), and two first sliding blocks being slidably disposed on two opposite inner side walls of the installation groove (101); A lifting seat (102), the lifting seat (102) being located above the mounting groove (101), two second sliding blocks being slidably provided at both ends of the bottom of the lifting seat (102), and the electric heating jacket (2) being provided on the top of the lifting seat (102); A first connecting rod (103), wherein there are two first connecting rods (103), the bottoms of the two first connecting rods (103) are respectively rotatably connected to the two first sliding blocks, and the tops are respectively rotatably connected to the two second sliding blocks; A second connecting rod (104), wherein there are two second connecting rods (104), the two second connecting rods (104) respectively cross the two first connecting rods (103) and are rotatably connected at the intersection, the bottom of the second connecting rod (104) is rotatably arranged on the inner wall of the mounting groove (101), and the top is rotatably arranged at the bottom of the lifting seat (102); A driving device (105), wherein the driving device (105) drives the first sliding block to slide.

4. A laboratory distillation device as claimed in claim 3, characterized in that: The driving device (105) comprises: A connecting rod (1051), wherein two ends of the connecting rod (1051) are respectively fixedly connected to the two first sliding blocks; A wire block (1052), the wire block (1052) being fixedly arranged in the middle of the connecting rod (1051); A screw rod (1053), wherein the screw rod (1053) is rotatably disposed on the frame (1) and is passed through the screw block (1052) to drive the screw block (1052) to slide. A handle (1054), wherein the handle (1054) is fixedly connected to one end of the screw rod (1053).

5. A laboratory distillation device as claimed in claim 3, characterized in that: A cylindrical groove body (11) is provided on the top of the lifting seat (102), and the electric heating jacket (2) is placed in the groove body (11).

6. A laboratory distillation device as claimed in claim 1, characterized in that: The flask (3) and the condenser (4) are connected via an electric heating and heat preservation tower (12), and the electric heating and heat preservation tower (12) is fixedly arranged on the frame (1).

7. A laboratory distillation device as claimed in claim 1, characterized in that: The condenser tube (4) and the material receiving bottle (5) are connected via a material receiving pipe (13), and the material receiving pipe (13) is fixedly arranged on the frame (1).

8. A laboratory distillation device as claimed in claim 7, characterized in that: A vacuum tube (14) is connected between the condenser tube (4) and the material receiving tube (13); the vacuum tube (14) is fixedly arranged on the frame (1); and a vacuum port for connecting to a vacuum pump is provided on the vacuum tube (14).

9. A laboratory distillation device as claimed in claim 7, characterized in that: The middle portion of the material receiving tube (13) is connected to a sampling bottle (15), and the sampling bottle (15) is fixedly arranged on the frame (1).

Images