Distillation device for chemical experiment

Abstract

The utility model discloses a chemical experiment distillation device which comprises a distillation flask, a connecting lantern ring is sleeved on the outer wall of the top end of the distillation flask, an anti-explosion cover is connected to the surface of the bottom of the connecting lantern ring and covers the distillation flask, an electric heating device is arranged below the distillation flask, and a water outlet is formed in the bottom of the electric heating device. A distillation head is arranged at an opening in the top end of the distillation bottle and communicated with one end of a condensation pipe, a collection cup is arranged below the other end of the condensation pipe, the collection cup and the electric heating device are both arranged on the upper surface of the base, and a lifting support is further fixedly installed on one side of the upper surface of the base; the connecting lantern ring is connected with the lifting support through a connecting structure, the stability of the distillation flask in the distillation process can be guaranteed by limiting the distillation flask through the connecting lantern ring, meanwhile, the distillation flask can be shaded by arranging the anti-explosion cover at the bottom of the connecting lantern ring, and the threat to experimenters due to the explosion condition of the distillation flask is reduced.

Description

Technical Field

[0001] The utility model relates to the field of filling, and specifically, to a chemical experiment distillation device. Background Art

[0002] Traditional distillation devices are widely used in chemical experiments. During the distillation process, as a part of the solution vaporizes, the air pressure inside the distillation flask will gradually increase, and there is a possibility that the air pressure exceeds the maximum pressure value that the distillation flask can withstand, causing the distillation flask to burst, leading to a situation that threatens the safety of experimental personnel.

[0003] How to invent a chemical experiment distillation device to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a chemical experiment distillation device, aiming to improve the problem that the air pressure exceeds the maximum pressure value that the distillation flask can withstand during the distillation process, resulting in the distillation flask bursting and threatening the safety of experimental personnel.

[0005] The utility model is implemented as follows: A chemical experiment distillation device includes a distillation flask. A connecting collar is sleeved on the outer wall of the top end of the distillation flask. An explosion-proof cover is connected to the bottom surface of the connecting collar. The explosion-proof cover covers the outside of the distillation flask. An electric heating device is arranged below the distillation flask. A distillation head is arranged at the opening of the top end of the distillation flask. One end of the distillation head is connected and communicated with one end of a condenser tube. A collection cup is arranged below the other end of the condenser tube. Both the collection cup and the electric heating device are arranged on the upper surface of a base. A lifting bracket is fixedly installed on one side of the upper surface of the base. The connecting collar is connected to the lifting bracket through a connecting structure.

[0006] In a preferred technical solution of the utility model, the inner wall of the connecting collar and the outer wall of the distillation flask are limited by a protective rubber ring.

[0007] In a preferred technical solution of the utility model, the bottom of the distillation flask is a planar structure.

[0008] In a preferred technical solution of the utility model, an annular groove is coaxially opened at the bottom of the connecting collar. A threaded groove is opened on the inner wall of one side of the annular groove. An external threaded connecting ring is integrally and coaxially arranged on the top surface of the explosion-proof cover. The external threaded connecting ring is threadedly connected in the annular groove.

[0009] In a preferred technical solution of the utility model, an installation groove is opened on the outer wall of one side of the explosion-proof cover. A visible transparent window is embedded in the installation groove.

[0010] In a preferred technical solution of the present utility model, a butting interface corresponding to the diameter of the top opening of the distillation flask is provided on the bottom surface of the distillation head, and the distillation head is sleeved on the top opening of the distillation flask through the butting interface. An air outlet pipe is integrally arranged on the top surface of the distillation head. One end of the air outlet pipe is communicated with the butting interface, and the other end is communicated with one end of the condenser pipe. An installation groove is provided on the inner wall of one side of the butting interface. A sealing block is arranged in the installation groove. A displacement sliding groove is provided on the inner wall of the bottom of the installation groove. A sliding block is arranged on the bottom surface of the sealing block. The sliding block is slidably connected in the displacement sliding groove. A spring is fixedly connected between one side surface of the sealing block and the inner wall of one side of the installation groove. An annular pressure relief ring groove coaxial with the whole distillation head is provided inside the distillation head above the sealing block. The pressure relief ring groove is communicated with the installation groove.

[0011] In a preferred technical solution of the present utility model, a sealing gasket is provided on the inner wall of the bottom end of the butting interface.

[0012] In a preferred technical solution of the present utility model, the connection mechanism includes a plug and a connecting rod. The plug is integrally arranged on the outer wall of one side of the connecting sleeve ring. A slot corresponding to the plug is provided on the surface of one end of the connecting rod. Two jacks corresponding in position are provided on one side surface of the plug and on the inner walls of both sides of the slot. A U-shaped limiting plug rod is inserted in the jacks. A threaded hole is provided at the end of the connecting rod far away from the slot, and the connecting rod is connected with the lifting bracket through the threaded hole.

[0013] In a preferred technical solution of the present utility model, a lifting sliding groove is provided on the surface of one side of the lifting bracket. The end of the connecting rod provided with the threaded hole is slidably connected in the lifting sliding groove. A lifting screw rod is threadedly connected in the threaded hole. The bottom end of the lifting screw rod is rotatably installed on the inner wall of the bottom of the lifting sliding groove. The other end of the lifting screw rod extends outside the lifting bracket through a through hole and is fixedly sleeved with a knob.

[0014] The beneficial effects of the present utility model are as follows: A chemical experiment distillation device obtained by the above design of the present utility model, during use, the distillation flask can be limited by the connecting sleeve ring to ensure the stability of the distillation flask during the distillation process. At the same time, an explosion-proof cover is arranged at the bottom of the connecting sleeve ring to shield the distillation flask, reducing the threat to the experimenter in case of explosion of the distillation flask. At the same time, a pressure relief structure is arranged on the distillation head, and when the pressure inside the distillation flask exceeds the preset value, it can automatically relieve pressure, further improving the safety during the distillation process. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic three-dimensional view of the overall structure provided by the embodiment of the present utility model;

[0017] Figure 2 is a schematic separated three-dimensional view of the cross-section of the explosion-proof cover and the connecting collar connection structure provided by the embodiment of the present utility model;

[0018] Figure 3 is a schematic separated three-dimensional view of the overall separated structure of the connecting collar and the connection structure provided by the embodiment of the present utility model;

[0019] Figure 4 is a schematic three-dimensional view of the overall cross-section structure of the distillation head provided by the embodiment of the present utility model;

[0020] Figure 5 is a schematic three-dimensional view of the overall cross-section structure of the lifting bracket provided by the embodiment of the present utility model.

[0021] In the figure: 1 - distillation flask; 2 - connecting collar; 3 - explosion-proof cover; 4 - distillation head; 5 - lifting bracket; 6 - condenser; 7 - collection cup; 8 - base; 9 - electric heating device; 201 - annular groove; 202 - threaded hole; 203 - insertion block; 204 - connecting rod; 205 - slot; 206 - jack; 207 - U-shaped limit insertion rod; 301 - external thread connection ring; 302 - visible transparent window; 401 - gas outlet pipe; 402 - installation groove; 403 - displacement sliding groove; 404 - sealing block; 405 - spring; 406 - pressure relief ring groove; 407 - sealing gasket; 501 - lifting sliding groove; 502 - lifting screw rod. Specific Embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0023] Please refer to Figures 1 to 5, the utility model provides a technical solution: a chemical experiment distillation device, which includes a distillation flask 1. A connecting collar 2 is sleeved on the outer wall of the top end of the distillation flask 1. A blast-proof cover 3 is connected to the bottom surface of the connecting collar 2. The blast-proof cover 3 covers the outside of the distillation flask 1. An electric heating device 9 is arranged below the distillation flask 1. A distillation head 4 is arranged at the opening of the top end of the distillation flask 1. One end of the distillation head 4 is connected and communicated with one end of a condenser 6. A collecting cup 7 is arranged below the other end of the condenser 6. Both the collecting cup 7 and the electric heating device 9 are arranged on the upper surface of a base 8. A lifting bracket 5 is fixedly installed on one side of the upper surface of the base 8. The connecting collar 2 is connected to the lifting bracket 5 through a connecting structure.

[0024] It should be noted that the electric heating device 9 can be an existing device or appliance such as an induction cooker that converts electrical energy into heat energy to heat an object, and it has a temperature control function and an over-temperature protection function, so as to improve the stability, accuracy and safety during the distillation process when in use.

[0025] Please refer to Figure 1 and Figure 2 , the inner wall of the connecting collar 2 and the outer wall of the distillation flask 1 are limited by a protective rubber ring.

[0026] The connecting collar 2 and the distillation flask 1 are detachably arranged. Before use, the connecting collar 2 is sleeved on the top end of the distillation flask 1 and the friction provided by the protective rubber ring is used to limit the two, and at the same time, it can also prevent the outer wall of the distillation flask 1 from being scratched by the connecting collar 2, affecting the safety of use.

[0027] Furthermore, the bottom of the distillation flask 1 is a flat structure.

[0028] The whole distillation flask 1 is a gradually converging structure with a larger diameter at the bottom and a smaller diameter at the top. When the connecting collar 2 is sleeved on the top end of the distillation flask 1, it can complete stable connection by using the gradually expanding diameter of its outer wall from top to bottom. At the same time, the larger lower part can improve the positive distillation efficiency of the liquid, and the flat bottom surface structure can also increase the contact area with the heating part of the electric heating device 9 to improve the heating speed and distillation efficiency.

[0029] Furthermore, an annular groove 201 is coaxially opened at the bottom of the connecting collar 2. A threaded groove is opened on the inner wall of one side of the annular groove 201. An external threaded connection ring 301 is coaxially and integrally arranged on the top surface of the blast-proof cover 3. The external threaded connection ring 301 is threadedly connected in the annular groove 201.

[0030] The connecting collar 2 and the blast-proof cover 3 are integrally detachably connected through the cooperation of the annular groove 201 and the external threaded connection ring 301, so that it is possible to choose whether to install the blast-proof cover 3 for explosion protection according to actual use requirements, so as to reduce the limitations during use.

[0031] Further, an installation groove is formed on the outer wall of one side of the explosion-proof cover 3, and a visible transparent window 302 is embedded in the installation groove.

[0032] When the explosion-proof cover 3 is installed, the distillation flask 1 inside the explosion-proof cover 3 can be observed through the visible transparent window 302 to understand the distillation progress and the situation inside the distillation flask 1, increasing the convenience during use.

[0033] Please refer to Figure 4 , a butting interface corresponding to the diameter of the top opening of the distillation flask 1 is formed on the bottom surface of the distillation head 4, and the distillation head 4 is sleeved on the top opening of the distillation flask 1 through the butting interface. An air outlet pipe 401 is integrally arranged on the top surface of the distillation head 4. One end of the air outlet pipe 401 is communicated with the butting interface, and the other end is communicated with one end of the condenser 6. An installation groove 402 is formed on the inner wall of one side of the butting interface. A sealing block 404 is arranged in the installation groove 402. A displacement sliding groove 403 is formed on the bottom inner wall of the installation groove 402. A sliding block is arranged on the bottom surface of the sealing block 404, and the sliding block is slidably connected in the displacement sliding groove 403. A spring 405 is fixedly connected between one side surface of the sealing block 404 and the inner wall of one side of the installation groove 402. An annular pressure relief ring groove 406 which is coaxial with the whole distillation head 4 is formed inside the distillation head 4 above the sealing block 404, and the pressure relief ring groove 406 is communicated with the installation groove 402.

[0034] Part of the solution inside the distillation flask 1 vaporizes and evaporates, enters the condenser 6 through the distillation head 4, liquefies and finally flows into the collection cup 7 for collection to realize the separation or purification of the solution. During this process, the air pressure inside the distillation flask 1 will gradually increase. When the air pressure is greater than the safe range that the distillation flask 1 can bear, the gas will push the sealing block 404 into the installation groove 402. While the sealing block 404 slides into the installation groove 402, the communication part between the pressure relief ring groove 406 and the installation groove 402 is exposed. The gas inside the distillation flask 1 can enter the pressure relief ring groove 406 from the installation groove 402 and diffuse to the outside, timely relieving the pressure inside the distillation flask 1. When the pressure decreases, the sealing block 404 resets under the drive of the spring 405, and then re-blocks the communication part between the installation groove 402 and the pressure relief ring groove 406 to continue sealing. The elastic coefficient of the spring 405 is set according to the preset safe air pressure, so as to further improve the safety during the distillation process.

[0035] Please refer to Figure 3 and Figure 5, the connecting and knotting mechanism includes an insertion block 203 and a connecting rod 204. The insertion block 203 is integrally provided on the outer wall of one side of the connecting sleeve ring 2. A slot 205 corresponding to the insertion block 203 is provided on the surface of one end of the connecting rod 204. Two jacks 206 corresponding in position are provided on one side surface of the insertion block 203 and the inner walls of both sides of the slot 205. A U-shaped limit insertion rod 207 is inserted into the jack 206. A threaded hole 202 is provided at the end of the connecting rod 204 away from the slot 205, and it is connected to the lifting bracket 5 through the threaded hole 202.

[0036] During use, the whole connecting sleeve ring 2 can be connected through the insertion block 203 and the connecting rod 204. After the insertion block 203 is inserted into the slot 205, the jacks 206 provided on the surface of the insertion block 203 and the inner walls of both sides of the slot 205 coincide. By inserting the U-shaped limit insertion rod 207, the connecting rod 204 and the insertion block 203 can be connected and limited, improving the stability during use. The connecting rod 204 is connected to the lifting bracket 5, so that the height of the whole connecting sleeve ring 2 and the explosion-proof cover 3 can be adjusted, reducing the limitations during use and expanding the applicable scenarios.

[0037] Furthermore, a lifting chute 501 is provided on one side surface of the lifting bracket 5. The end of the connecting rod 204 with the threaded hole 202 is slidably connected in the lifting chute 501. A lifting screw rod 502 is threadedly connected in the threaded hole 202. The bottom end of the lifting screw rod 502 is rotatably installed on the bottom inner wall of the lifting chute 501. The other end of the lifting screw rod 502 extends to the outside of the lifting bracket 5 through a through hole and is fixedly sleeved with a knob.

[0038] The connecting rod 204 is threadedly connected to the lifting screw rod 502 through the threaded hole 202, and the connecting rod 204 is slidably connected to the lifting chute 501. By rotating the lifting screw rod 502, the connecting rod 204 can be driven to slide up and down in the lifting chute 501, thereby changing the height of the distillation flask 1, the connecting sleeve ring 2 and the explosion-proof cover 3 to adapt to electric heating devices 9 of different heights or changing the shielding range of the explosion-proof cover 3, reducing the limitations during use.

[0039] Working principle: Pour the solution to be distilled into the distillation flask 1. Set the connecting collar 2 on the top of the distillation flask 1, and insert the insertion block 203 into the slot 205 and limit the connection through the U-shaped limit insertion rod 207. Set the heating temperature of the electric heating device 9 according to the distillation requirement. Drive the distillation flask 1, the connecting collar 2 and the explosion-proof cover 3 as a whole to adjust the height by rotating the lifting screw rod 502, so that the bottom surface of the distillation flask 1 contacts the heating part of the electric heating device 9. After the electric heating device 9 heats the solution in the distillation flask 1 to the predetermined temperature, a part of the solution vaporizes and evaporates from the distillation flask 1 into the distillation head 4, and then enters the condenser 6 through the air outlet pipe 401. The gas is re-liquefied in the condenser 6 and finally flows into the collection cup 7 to complete the separation or purification of the solution. During the distillation process, the air pressure inside the distillation flask 1 will increase. When the air pressure exceeds the elastic coefficient of the spring 405, the gas will squeeze the sealing block 404 into the installation groove 402, thus exposing the communication between the installation groove 402 and the pressure relief ring groove 406. The pressure can be relieved through the pressure relief ring groove 406 to ensure the safety during the distillation process.

[0040] It should be noted that the specific model and specification of the electric heating device 9 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail.

[0041] The power supply and principle of the electric heating device 9 are clear to those skilled in the art and will not be elaborated here.

[0042] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chemical experiment distillation device, characterized in that: It includes a distillation flask, a connecting ring is sleeved on the outer wall of the top end of the distillation flask, the bottom surface of the connecting ring is connected to an explosion-proof cover, the explosion-proof cover is arranged outside the distillation flask, an electric heating device is arranged below the distillation flask, a distillation head is arranged at the opening of the top end of the distillation flask, the distillation head is connected to one end of the condenser, a collecting cup is arranged below the other end of the condenser, the collecting cup and the electric heating device are both arranged on the upper surface of the base, a lifting bracket is also fixedly installed on one side of the upper surface of the base, and the connecting ring is connected to the lifting bracket through a connecting structure.

2. The chemical experiment distillation apparatus according to claim 1, characterized in that: The inner wall of the connecting sleeve ring and the outer wall of the distillation flask are limited by a protective rubber ring.

3. The chemical experiment distillation apparatus as claimed in claim 1, characterized in that: The bottom of the distillation flask is a flat structure.

4. The chemical experiment distillation apparatus as claimed in claim 1, characterized in that: An annular groove is coaxially formed at the bottom of the connecting collar, a threaded groove is formed on the inner wall of one side of the annular groove, and an external threaded connecting ring is coaxially and integrally formed on the top surface of the explosion-proof cover, and the external threaded connecting ring is threadedly connected in the annular groove.

5. The chemical experiment distillation apparatus as claimed in claim 1, characterized in that: An installation groove is provided on the outer wall of one side of the explosion-proof cover, and a visible transparent window is embedded in the installation groove.

6. The chemical experiment distillation apparatus as claimed in claim 1, characterized in that: The bottom surface of the distillation head is provided with a docking port corresponding to the opening diameter of the top end of the distillation flask, and the distillation head is sleeved at the top opening of the distillation flask through the docking port; an air outlet pipe is integrally arranged on the top surface of the distillation head, one end of the air outlet pipe is connected to the docking port, and the other end is connected to one end of the condenser; an installation groove is provided on the inner wall of one side of the docking port, a sealing block is provided in the installation groove, a displacement groove is provided on the bottom inner wall of the installation groove, a slider is provided on the bottom surface of the sealing block, and the slider is slidably connected to the displacement groove, a spring is fixedly connected between the surface of one side of the sealing block and the inner wall of one side of the installation groove, an annular pressure relief ring groove is provided inside the distillation head above the sealing block and is coaxially arranged with the distillation head as a whole, and the pressure relief ring groove is connected to the installation groove.

7. The chemical experiment distillation apparatus as claimed in claim 6, characterized in that: A sealing gasket is arranged on the inner wall of the bottom end of the docking port.

8. The chemical experiment distillation apparatus as claimed in claim 1, characterized in that: The connecting mechanism includes an insert block and a connecting rod, wherein the insert block is integrally arranged on an outer wall of one side of a connecting collar, a slot corresponding to the insert block is provided on the surface of one end of the connecting rod, two corresponding plug holes are provided on the surface of one side of the insert block and on the inner walls on both sides of the slot, a U-shaped limiting plug rod is inserted in the plug hole, a threaded hole is provided on the end of the connecting rod away from the slot, and the connecting rod is connected to the lifting bracket through the threaded hole.

9. The chemical experiment distillation apparatus as claimed in claim 8, characterized in that: A lifting slot is provided on one side surface of the lifting bracket, one end of the connecting rod with a threaded hole is slidably connected in the lifting slot, a lifting screw is threadedly connected in the threaded hole, the bottom end of the lifting screw is rotatably mounted on the bottom inner wall of the lifting slot, and the other end of the lifting screw extends to the outside of the lifting bracket through a through hole and is fixedly sleeved with a knob.

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