A vacuum distillation device and distillation method

Abstract

The invention discloses a vacuum distillation device and a distillation method, belonging to the technical field of distillation devices, wherein the vacuum distillation device comprises a tank body for distillation, a water tank is arranged below the tank body, a partition is slidably arranged between the tank body and the water tank, a fixed pipe is installed on the tank body, a sleeve is rotatably installed on the partition, and a base is arranged in the water tank; the water volume in the water tank can be adjusted by cooperating with the set guide pipe and the fixed pipe, when the water volume in the water tank is small, the sleeve can drive the guide pipe to rotate during the counterclockwise rotation process, and in the process of multiple alignment of the through hole and the guide hole, the water on the top of the partition can flow back into the water tank, so that the water level in the water tank is higher than the liquid level of the raw material in the tank body, therefore, the water tank can be replenished with water in time by utilizing this structure, which is beneficial to uniformly heating the raw material in the tank body.

Description

Technical Field

[0001] The present invention relates to the technical field of distillation devices, and in particular to a vacuum distillation device and a distillation method. Background Art

[0002] Vacuum distillation is an important method for separating and purifying compounds. It is particularly suitable for the separation and purification of high-boiling point substances and those compounds that are thermally decomposed, oxidized or polymerized before reaching the boiling point during atmospheric distillation.

[0003] Chinese patent CN218686429U discloses a vacuum distillation device for extractant production. When the internal pressure of the distillation flask reaches a certain level, the pressure will be transported through a delivery pipe. Since a moving ball is connected to one end, the pressure will push the moving ball to move inside the active area, so that the air inside the vacuum zone enters the distillation flask through the delivery pipe, reducing the pressure inside the distillation flask.

[0004] The above-mentioned device heats the distillation flask through the water bath heating pot, and during the heating process, the liquid level in the water bath heating pot must be higher than the solution height in the distillation flask. However, the above-mentioned device cannot timely adjust the water volume in the water bath heating pot according to the remaining solution in the distillation flask. Some of the existing devices can control the water volume in the water bath heating pot through sensors and multiple power components, but the whole system is relatively complex and the maintenance cost is high. In summary, there is still room for improvement in the above-mentioned device.

[0005] Therefore, it is necessary to provide a vacuum distillation device and a distillation method to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a vacuum distillation device and a distillation method to solve the problem that the existing device proposed in the above background technology heats the distillation flask by means of a water bath heating pot, and during the heating process, the liquid level in the water bath heating pot is higher than the solution height in the distillation flask, and the above device cannot timely adjust the water amount in the water bath heating pot according to the remaining amount of solution in the distillation flask.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a vacuum distillation device, comprising a tank body for distillation, a water tank is arranged below the tank body, a partition is slidably arranged between the tank body and the water tank, a fixing pipe is installed on the tank body, a sleeve is rotatably installed on the partition, a base is arranged inside the water tank, the sleeve passes through the base and is threadedly matched with the base, a rotating shaft is coaxially arranged inside the sleeve, and a clamping block matching the rotating shaft is elastically installed on the sleeve;

[0008] A positioning cylinder is provided at the top position of the sleeve. The positioning cylinder can move in the vertical direction relative to the tank body. A magnet cooperating with a card block is fixedly embedded on the inner wall of the positioning cylinder. When the positioning cylinder moves downward relative to the sleeve so that the magnet and the card block are offset, the card block will cooperate with the rotating shaft, so that the sleeve can be driven to rotate synchronously during the rotation of the rotating shaft.

[0009] As a further solution of the present invention: a guide rod is fixedly provided on the top end surface of the positioning cylinder, a round table is fixedly provided on the top end of the guide rod, a boss is fixedly provided on the tank body, and the guide rod passes through the boss and slides with it.

[0010] As a further solution of the present invention: a strip groove is provided on the outer peripheral surface of the rotating shaft, the clamping block is made of iron, and one end of the clamping block is located in the strip groove.

[0011] As a further solution of the present invention: a guide tube is coaxially arranged inside the fixed tube, and the guide tube and the fixed tube are rotatably matched, a through hole is opened on the tube wall of the fixed tube, and a penetrating guide hole is opened on the tube wall of the guide tube, when the through hole and the guide hole are aligned, water on the top of the partition can flow back to the bottom of the partition, a ring is sleeved at the outer side of the guide tube near the bottom end, a limiting block is elastically installed on the inner wall of the ring, a limiting groove is opened on the outer wall of the guide tube for sliding cooperation with the limiting block, the inner bottom surface of the limiting groove is set as an inclined surface, and the side surface of the end of the limiting block away from the ring is set as an inclined guide surface, an annular plate is sleeved on the outer side of the ring, the annular plate is connected to the ring by a one-way bearing, a driven gear is fixedly sleeved on the outer side of the annular plate, and a driving gear meshing with the driven gear is fixedly sleeved on the outer side of the sleeve.

[0012] As a further solution of the present invention: a groove is provided on the inner wall of the fixed tube, a protrusion is slidably arranged in the groove, the end face of the protrusion located on the outside of the fixed tube is an arc surface structure, and a notch matching the protrusion is provided on the outer circumferential surface of the guide tube, when the protrusion pops out and is inserted into the notch, the guide hole and the through hole are in a staggered state.

[0013] As a further solution of the present invention: a floating plate is arranged in the tank body, and a pulling rope is fixedly arranged between the floating plate and the round table.

[0014] As a further solution of the present invention: the base is fixedly connected to the tank body.

[0015] As a further solution of the present invention: a through installation groove is opened on the inner wall of the sleeve, the clamping block is slidably set in the installation groove, and a retaining ring is fixedly set at one end of the installation groove close to the positioning tube, and a first spring is fixedly set between the retaining ring and the clamping block.

[0016] As a further solution of the present invention: a penetrating circular hole is formed on the boss, and rubber pads are fixedly attached to the outer peripheral wall of the guide rod and the inner wall of the circular hole.

[0017] A method for distillation using the above-mentioned vacuum distillation device includes the following steps: introducing raw materials to be distilled into a tank body, and heating the raw materials in the tank body by water bath heating; the rotation of the sleeve can drive the partition to move downward, so that the water in the water tank can be discharged to the top of the partition through a fixed pipe, thereby controlling the water amount in the water tank.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the position of the positioning cylinder in the device can be adjusted according to the liquid level in the tank body, thereby indirectly adjusting the position of the partition in the vertical direction, and when the partition moves downward, the water in the water tank can be guided to the top of the partition through the guide pipe, thereby reducing the amount of water in the water tank, making the insulation process more energy-efficient;

[0019] In addition, by cooperating with the set guide pipe and the fixed pipe, the water amount in the water tank can be adjusted. When the water amount in the water tank is small, the sleeve can drive the guide pipe to rotate during the counterclockwise rotation. During the multiple alignment of the through hole and the guide hole, the water on the top of the partition can flow back into the water tank, so that the water level in the water tank is higher than the liquid level of the raw material in the tank body. Therefore, this structure can be used to replenish the water tank in time, which is beneficial to uniform heating of the raw materials in the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the tank body and the water tank of the present invention;

[0023] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0024] Figure 4 The present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0025] Figure 5 It is a schematic diagram of the cooperation between the driving gear and the driven gear of the present invention;

[0026] Figure 6 It is a schematic diagram of the cooperation between the guide rod and the boss of the present invention;

[0027] Figure 7 The present invention Figure 6A schematic diagram of the enlarged structure at C;

[0028] Figure 8 It is a schematic diagram of the limit block structure of the present invention;

[0029] Fig. 9 is a schematic diagram of the bump structure of the present invention;

[0030] Fig.10 It is a schematic diagram of the sealing block structure of the present invention.

[0031] In the figure: 1, tank body; 101, baffle; 2, belt; 3, fixed pipe; 301, through hole; 4, partition; 5, water tank; 6, vertical rod; 7, boss; 8, guide rod; 9, round table; 10, positioning cylinder; 1001, slide bar; 11, sleeve; 12, base; 13, driving gear; 14, floating plate; 15, pull rope; 16, guide tube; 1601, inclined plane; 1602, guide hole; 17, rotating shaft; 1701, strip groove; 18, driven gear; 19, collar; 20, limit block; 2001, guide surface; 21, annular plate; 22, boss; 23, magnet; 24, block; 25, connecting block; 26, sealing block. DETAILED DESCRIPTION

[0032] like Figure 1-Figure 3 As shown, a vacuum distillation device and a distillation method include a tank body 1 for distillation, and the tank body 1 is provided with a feed pipe and a discharge pipe and other structures. Since the tank body 1 for distillation is a commonly used industrial device, the remaining structures on the tank body 1 and the working principle of the tank body 1 are not described in detail here;

[0033] A water tank 5 is provided below the tank body 1 for water bath heating of the tank body 1 so that the raw materials in the tank body 1 can be heated evenly. In actual use, the raw materials to be distilled are introduced into the tank body 1, a part of the gas in the tank body 1 is extracted to reduce its pressure, and then the water tank 5 is heated. Water bath heating is used to promote evaporation of the raw materials in the tank body 1. Specifically, the water level in the water tank 5 should be higher than the liquid level of the raw materials in the tank body 1 to ensure that the raw materials in the tank body 1 can be heated evenly.

[0034] like Figure 2-Figure 6 As shown, a partition 4 is sleeved on the outside of the tank body 1, and the partition 4 is located between the tank body 1 and the water tank 5. The partition 4 is in contact with the tank body 1 and the water tank 5, and a fixed pipe 3 is fixedly installed on the tank body 1. When the partition 4 moves downward, the water in the water tank 5 can be pressed out through the fixed pipe 3, and thus fall into the space formed by the partition 4, the water tank 5 and the tank body 1. This structure is conducive to adjusting the water level height in the water tank 5.

[0035] A sleeve 11 is also provided on the partition 4. The sleeve 11 passes through the partition 4 and is rotatably connected to the partition 4 through a bearing (a tapered roller bearing can be used). Through this structure, the sleeve 11 can rotate relative to the partition 4 on the one hand, and on the other hand, the sleeve 11 can also drive the partition 4 to move up and down. A rotating shaft 17 is coaxially provided inside the sleeve 11, and a clamping block 24 that matches the rotating shaft 17 is elastically installed on the sleeve 11. A positioning cylinder 10 is provided at the top position of the sleeve 11, and a ring-shaped magnet 23 that matches the clamping block 24 is fixedly embedded on the inner wall of the positioning cylinder 10. In actual use, as the raw material in the tank body 1 continues to evaporate, the liquid level of the raw material in the tank body 1 gradually decreases, so that the positioning cylinder 10 can move downward relative to the sleeve 11, so that the magnet 23 and the clamping block 24 are staggered. At this time, the clamping block 24 will cooperate with the rotating shaft 17, so that the sleeve 11 can be driven to rotate synchronously during the rotation of the rotating shaft 17;

[0036] Furthermore, a base 12 is provided in the water tank 5, and the sleeve 11 passes through the base 12 and cooperates with the thread thereof. Therefore, when the sleeve 11 rotates synchronously with the rotating shaft 17, the threaded engagement relationship between the sleeve 11 and the base 12 can drive the sleeve 11 and the partition 4 to move downward. During this process, if the water level in the water tank 5 is high, the water in the water tank 5 can be discharged to the partition 4 through the guide pipe 16, so as to lower the water level in the water tank 5, so that the overall energy consumption of the device can be reduced during the insulation stage.

[0037] In actual use, a guide rod 8 is fixedly provided on the top end face of the positioning cylinder 10, a round table 9 is fixedly provided on the top end of the guide rod 8, and a boss 7 is fixedly provided on the tank body 1. A through circular hole is opened on the boss 7, so that the guide rod 8 can pass through the boss 7 and slide with it. Of course, in order to ensure that the guide rod 8 can remain stable relative to the boss 7, rubber pads can be fixedly pasted on the outer circumferential wall of the guide rod 8 and the inner wall of the round hole to increase the friction between the guide rod 8 and the boss 7, so that the guide rod 8 can remain stationary relative to the boss 7 when not affected by external forces; of course, a spring can also be selectively installed between the boss 7 and the round table 9 to provide auxiliary support for the round table 9.

[0038] In order to control the positioning cylinder 10 according to the liquid level height in the tank body 1, a liquid level sensor can be installed on the inner wall of the tank body 1, and a telescopic unit such as a hydraulic rod is fixedly installed on the tank body 1. The telescopic end of the telescopic unit is fixedly connected to the round table 9, and the liquid level sensor is connected to the telescopic unit through a controller (single-chip microcomputer or PLC) to control the position of the positioning cylinder 10.

[0039] As another embodiment for adjusting the position of the positioning cylinder 10, a floating plate 14 can be arranged in the tank body 1. The floating plate 14 can be a ring-shaped structure or a polygonal structure, etc. A pull rope 15 is fixedly provided between the floating plate 14 and the round table 9. The pull rope 15 passes through the tank body 1 and slides with it. Specifically, the position where the pull rope 15 and the round table 9 are fixed is located at the bottom end surface of the round table 9. Through this structure, when the liquid level height in the tank body 1 is lowered, the round table 9 can be pulled downward by the pull rope 15, thereby prompting the positioning cylinder 10 to move downward.

[0040] A strip groove 1701 is provided on the outer circumferential surface of the rotating shaft 17. The above-mentioned block 24 is made of iron, and one end of the block 24 is located in the strip groove 1701. When the magnet 23 on the inner wall of the positioning tube 10 is aligned with the block 24, the suction force of the magnet 23 on the block 24 can move one end of the block 24 out of the groove. At this time, the sleeve 11 will not rotate synchronously with the rotating shaft 17.

[0041] In the initial state, the magnet 23 on the inner wall of the positioning cylinder 10 is aligned with the block 24 on the horizontal plane. As the distillation proceeds, the liquid level in the tank body 1 gradually decreases, so that the float plate 14 can move downward relative to the tank body 1, and the pull rope 15 can drive the round table 9 and the positioning cylinder 10 to move downward, so that the magnet 23 on the inner wall of the positioning cylinder 10 and the block 24 are staggered on the horizontal plane. At this time, one end of the block 24 can be stuck in the strip groove 1701. Afterwards, when the rotating shaft 17 rotates clockwise, the matching of the block 24 and the strip groove 1701 allows the rotating shaft 17 to synchronously drive the sleeve 11 to rotate. Due to the threaded connection between the sleeve 11 and the base 12, the sleeve 11 can drive the partition 4 to rotate synchronously during its rotation. When the partition 4 moves downward, if the water in the water tank 5 evaporates slowly, so that the water level in the water tank 5 is high, during the downward movement of the partition 4, the water can be discharged to the partition 4 through the fixed pipe 3, thereby reducing the water level in the water tank 5. As the partition 4 and the sleeve 11 continue to move downward, the block 24 on the sleeve 11 will be realigned with the magnet 23 on the inner wall of the positioning tube 10. At this time, the suction force of the magnet 23 on the block 24 can prompt one end of the block 24 to move out of the slot, so that the rotating shaft 17 and the sleeve 11 are disengaged, which is beneficial for the sleeve 11 and the partition 4 to remain stationary. At this point, a part of the water in the water tank 5 is discharged to the top of the partition 4, so that the amount of water in the water tank 5 is reduced. Therefore, the energy consumption for heating water in the insulation stage is reduced.

[0042] Of course, during specific use, both the fixed tube 3 and the partition 4 can be made of insulating materials; and in order to reduce the friction between the block 24 and the rotating shaft 17, a ball bearing can be installed on the block 24, or lubricating oil can be applied between the block 24 and the rotating shaft 17 to reduce the friction between the block 24 and the rotating shaft 17. In addition, the rotating shaft 17 can be rotated intermittently. When the rotating shaft 17 is in a non-rotating state, the pressure between the block 24 and the rotating shaft 17 will drop to the lowest point, and the friction between the block 24 and the rotating shaft 17 will also be reduced.

[0043] like Figure 2-Figure 9 As shown, as a further development of the above solution, in this solution, a guide tube 16 is coaxially arranged inside the fixed tube 3, the guide tube 16 is rotationally matched with the fixed tube 3, and the guide tube 16 cannot move in the vertical direction relative to the fixed tube 3, and the outer wall of the guide tube 16 is in contact with the inner wall of the fixed tube 3;

[0044] Furthermore, a through hole 301 is provided on the wall of the fixed pipe 3, and a through flow guide hole 1602 is provided on the wall of the flow guide pipe 16. When the through hole 301 is aligned with the flow guide hole 1602, the water on the top of the partition 4 can flow back into the water tank 5, thereby replenishing the water at the bottom of the water tank 5.

[0045] Reference Figure 4 As shown, a collar 19 is sleeved at a position near the bottom end of the outer side of the guide tube 16, and a limit block 20 is elastically installed on the inner wall of the collar 19, and a limit groove that slides with the limit block 20 is opened on the outer wall of the guide tube 16. The inner bottom surface of the limit groove is set as an inclined slope 1601, and the end of the limit block 20 away from the collar 19 is in contact with the slope 1601. Specifically, when the limit block 20 moves upward along the limit groove, the pressure of the slope 1601 on the limit block 20 can squeeze the limit block 20 toward the direction close to the collar 19. Figure 8 As shown, the side edge of the limit block 20 away from the collar 19 is set as an inclined guide surface 2001. In the initial state, the collar 19 is located at the bottom end of the guide tube 16. At this time, the guide surface 2001 on the limit block 20 is completely placed in the limit groove, so that the collar 19 can stably drive the guide tube 16 to rotate. However, when the collar 19 moves upward relative to the guide tube 16, the limit block 20 is squeezed by the inclined surface 1601, so that a part of the guide surface 2001 on the limit block 20 is placed outside the limit groove. At this time, when the pressure between the guide surface 2001 and the side edge of the strip groove 1701 increases, the limit block 20 can move out of the limit groove;

[0046] An annular plate 21 is sleeved on the outside of the collar 19, and the annular plate 21 is connected to the collar 19 through a one-way bearing. In actual use, the collar 19 and the annular plate 21 are made of materials with a density less than that of water, so that the annular plate 21 and the collar 19 can float on the water surface. A driven gear 18 is fixedly sleeved on the outside of the annular plate 21, and a driving gear 13 meshing with the driven gear 18 is fixedly sleeved on the outside of the sleeve 11. Of course, the driving gear 13 and the driven gear 18 can be made of plastic, rubber or metal materials.

[0047] In actual use, since a one-way bearing is provided between the collar 19 and the annular plate 21, when the sleeve 11 rotates clockwise, the engagement of the driving gear 13 and the driven gear 18 can drive the annular plate 21 to rotate alone, and when the sleeve 11 rotates counterclockwise, the annular plate 21 can drive the collar 19 to rotate synchronously;

[0048] In the initial state, a certain amount of water can be pre-stored on the top of the partition 4. When the water in the water tank 5 evaporates slowly and the water level in the water tank 5 is higher than the liquid level in the tank body 1, the sleeve 11 drives the partition 4 to move downward, and the collar 19 can move to the water surface, so that the collar 19 can float upward, so that the limit block 20 on the inner wall of the collar 19 can slide upward along the limit groove. At this time, when the sleeve 11 rotates in the opposite direction, the engagement of the driving gear 13 and the driven gear 18 can drive the annular plate 21 and the collar 19 to rotate. However, since a part of the guide surface 2001 on the limit block 20 is placed in the limit groove, the force between the limit block 20 and the limit groove is not enough to drive the guide tube 16 to rotate, so that the guide tube 16 on the guide tube 16 and the through hole 301 on the fixed tube 3 are always in a staggered state; and when The water in the water tank 5 evaporates quickly, so that when the water level in the water tank 5 is low, the sleeve 11 will not contact the water surface after driving the partition 4 to move downward for a distance, so that the ring 19 is still at the bottom end position of the guide tube 16. Since the limit block 20 is located at the bottom end position of the limit groove in this state, when the shaft 17 drives the sleeve 11 to rotate in the opposite direction, the ring 19 and the annular plate 21 can drive the guide tube 16 to rotate synchronously. When the guide hole 1602 is aligned with the through hole 301, the water on the top of the partition 4 can flow back to the inside of the water tank 5. As the guide tube 16 continues to rotate, the water level in the water tank 5 gradually rises. When the water level line reaches the ring 19, the ring 19 can float upward, so that the limit block 20 moves upward along the limit groove, thereby preventing the guide tube 16 from continuing to rotate. After that, the shaft 17 stops rotating.

[0049] In summary, the position of the positioning cylinder 10 in this device can be adjusted according to the liquid level in the tank body 1, thereby indirectly adjusting the position of the partition 4 in the vertical direction. When the partition 4 moves downward, the water in the water tank 5 can be guided to the top of the partition 4 through the guide pipe 16, thereby reducing the amount of water in the water tank 5, making the insulation process more energy-efficient.

[0050] In addition, by cooperating with the fixed tube 3 through the provided guide tube 16, the amount of water in the water tank 5 can be adjusted. When the amount of water in the water tank 5 is small, the sleeve 11 can drive the guide tube 16 to rotate during the counterclockwise rotation. During the multiple alignment of the through hole 301 and the guide hole 1602, the water on the top of the partition 4 can flow back into the water tank 5, so that the water level in the water tank 5 is higher than the liquid level of the raw material in the tank body 1. Therefore, this structure can be used to replenish the water in the water tank 5 in time, which is beneficial to uniformly heat the raw materials in the tank body 1.

[0051] like Fig. 9 As shown, a groove is provided on the inner wall of the fixed tube 3, and a protrusion 22 is slidably provided in the groove. The end surface of the protrusion 22 located on the outer side of the fixed tube 3 is a curved surface structure, and a notch matching with the protrusion 22 is provided on the outer peripheral surface of the guide tube 16. When the protrusion 22 pops out and is inserted into the notch, a part of the curved surface structure is placed outside the notch, and the guide hole 1602 and the through hole 301 are in a staggered state. In actual use, when the water level rises and drives the collar 19 to move upward, the limit The block 20 can move upward along the limiting groove, and at this time, a part of the guide surface 2001 on the limiting block 20 is placed in the limiting groove. When the guide tube 16 is rotated by the cooperation between the limiting block 20 and the limiting groove so that the notch on it is aligned with the protrusion 22, the protrusion 22 can be inserted into the notch, so that the action force between the limiting block 20 and the limiting groove is not sufficient to drive the guide tube 16 to rotate, thereby maintaining the stability of the guide tube 16, so that the through hole 301 and the guide hole 1602 are in a staggered state.

[0052] like Figure 1-Figure 2 , Fig.10 As shown, a support plate is fixedly installed on the top of the water tank 5, the top end of the above-mentioned rotating shaft 17 is rotatably connected to the support plate, and the bottom end of the rotating shaft 17 is rotatably connected to the water tank 5. A motor is installed on the outside of the water tank 5, and the output shaft of the motor and one end of the rotating shaft 17 passing through the support plate are connected by a belt 2, so as to drive the rotating shaft 17 to rotate clockwise and counterclockwise. Of course, the intermittent rotation of the rotating shaft 17 can also be achieved by the motor.

[0053] In addition, a vertical rod 6 can be fixedly installed in the water tank 5 so that the vertical rod 6 passes through the partition 4 and slides with it. Of course, the vertical rod 6 can be made of rubber or plastic, etc., which is beneficial to improve the stability of the movement of the partition 4.

[0054] The pull rope 15 passes through the tank body 1 and slides with it. The pull rope 15 can be made of materials such as nylon or steel wire. In actual use, a connecting block 25 can be fixedly installed at the position of the pull rope 15 on the outside of the tank body 1, so that the pull rope 15 passes through the connecting block 25, and two sealing blocks 26 are slidably arranged in the connecting block 25. The side of the sealing block 26 close to the pull rope 15 is an arc surface and matches the pull rope 15. A cylinder can be installed on the outside of the connecting block 25 to drive the connecting block 25 to move. Through this structure, when the cylinder drives the two sealing blocks 26 to clamp the pull rope 15, the pull rope 15 can remain stable, thereby keeping the positioning tube 10 stable, and at this time the tank body 1 has good sealing at the pull rope 15, and when the sealing block 26 is away from the pull rope 15, the pull rope 15 can slide relative to the tank body 1.

[0055] A pulley is fixedly installed on the outer side of the tank body 1 , and one end of the pull rope 15 away from the floating plate 14 is passed around the bottom end of the pulley and then fixed to the bottom end surface of the truncated table 9 .

[0056] The base 12 can be fixedly connected to the tank body 1 .

[0057] like Figure 3-Figure 7 As shown, a through installation groove is opened on the inner wall of the sleeve 11, the clamping block 24 is slidably set in the installation groove, and a retaining ring is fixedly set at one end of the installation groove close to the positioning tube 10, and a first spring is fixedly set between the retaining ring and the clamping block 24.

[0058] The inner wall of the collar 19 is provided with a rectangular groove which is slidably matched with the limit block 20, and a second spring is fixedly arranged between the inner end surface of the rectangular groove and the limit block 20;

[0059] A slide bar 1001 is fixedly arranged on the outer peripheral surface of the positioning tube 10, and baffles 101 are arranged on both sides of the slide bar 1001. The baffles 101 are fixedly connected to the tank body 1, and the baffles 101 are slidably arranged between the two slide bars 1001. This structure can further improve the stability of the positioning tube 10.

Claims

1. A vacuum distillation apparatus, comprising a tank for distillation, a water tank being arranged below the tank, characterized in that: A partition is slidably arranged between the tank body and the water tank, a fixed pipe is installed on the tank body, a sleeve is rotatably installed on the partition, a base is arranged in the water tank, the sleeve passes through the base and is threadedly matched with the base, a rotating shaft is coaxially arranged inside the sleeve, and a clamping block matching the rotating shaft is elastically installed on the sleeve, a strip groove is opened on the outer peripheral surface of the rotating shaft, the clamping block is made of iron, and one end of the clamping block is located in the strip groove; A positioning cylinder is arranged at the top position of the sleeve, and the positioning cylinder can move in the vertical direction relative to the tank body, and a through installation groove is opened on the inner wall of the sleeve, and the clamping block is slidably arranged in the installation groove, and a retaining ring is fixedly arranged at one end of the installation groove close to the positioning cylinder, and a first spring is fixedly arranged between the retaining ring and the clamping block, and a ring-shaped magnet matching with the clamping block is fixedly embedded on the inner wall of the positioning cylinder, and when the positioning cylinder moves downward relative to the sleeve so that the magnet and the clamping block are staggered, the clamping block will cooperate with the rotating shaft, so that the sleeve can be driven to rotate synchronously during the rotation of the rotating shaft; A guide rod is fixedly provided on the top end surface of the positioning cylinder, a round platform is fixedly provided on the top end of the guide rod, a boss is fixedly provided on the tank body, and the guide rod passes through the boss and slides with it; A floating plate is arranged in the tank body, and the floating plate is a ring-shaped structure. A pull rope is fixedly arranged between the floating plate and the truncated cone. The pull rope passes through the tank body and slides with the tank body. The position where the pull rope and the truncated cone are fixed is located at the bottom end surface of the truncated cone. When the liquid level in the tank body decreases, the truncated cone can be pulled downward by the pull rope, thereby prompting the positioning cylinder to move downward.

2. A vacuum distillation apparatus according to claim 1, characterized in that: A guide tube is coaxially arranged inside the fixed tube, and the guide tube and the fixed tube are rotatably matched. A through hole is provided on the tube wall of the fixed tube, and a penetrating guide hole is provided on the tube wall of the guide tube. When the through hole is aligned with the guide hole, water on the top of the partition can flow back to the bottom of the partition. A collar is sleeved at a position near the bottom end of the outer side of the guide tube, and a limiting block is elastically installed on the inner wall of the collar. A limiting groove that slides with the limiting block is provided on the outer wall of the guide tube, and the inner bottom surface of the limiting groove is set as an inclined surface, and the side surface of one end of the limiting block away from the collar is set as an inclined guide surface. An annular plate is sleeved on the outer side of the collar, and the annular plate and the collar are connected by a one-way bearing. A driven gear is fixedly sleeved on the outer side of the annular plate, and a driving gear meshing with the driven gear is fixedly sleeved on the outer side of the sleeve.

3. A vacuum distillation apparatus according to claim 2, characterized in that: A groove is provided on the inner wall of the fixed tube, a protrusion is slidably arranged in the groove, the end surface of the protrusion located on the outside of the fixed tube is an arc surface structure, and a notch matching the protrusion is provided on the outer circumferential surface of the guide tube. When the protrusion pops out and is inserted into the notch, the guide hole and the through hole are in a staggered state.

4. A vacuum distillation apparatus according to claim 1, characterized in that: A floating plate is arranged in the tank body, and a pulling rope is fixedly arranged between the floating plate and the round table.

5. A vacuum distillation apparatus according to claim 1, characterized in that: The base is fixedly connected to the tank body.

6. A vacuum distillation apparatus according to claim 1, characterized in that: A through circular hole is formed on the boss, and rubber pads are fixedly attached to the outer peripheral wall of the guide rod and the inner wall of the circular hole.

7. A method for distillation using the vacuum distillation apparatus according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: introducing raw materials to be distilled into a tank body, and heating the raw materials in the tank body by water bath heating; the rotation of the sleeve can drive the partition to move downward, so that the water in the water tank can be discharged to the top of the partition through a fixed pipe, so as to control the water amount in the water tank.

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