High-sealing rotary evaporator

Abstract

The utility model discloses a high-sealing rotary evaporator, and relates to the technical field of evaporators. The device comprises a base, one end of the base is fixedly connected with a water bath heater, one end of the base is provided with a three-way pipe, the top of the three-way pipe is fixedly connected with a condensation pipe, the bottom of the three-way pipe is fixedly connected with a collecting pipe, the input end of the three-way pipe is fixedly connected with a connecting pipe, and the top of the connecting pipe is fixedly connected with a vacuum pump; the input end of the connecting pipe is rotationally connected with an air guide pipe. When the locking threaded ring is pulled to be arranged at the input end of the air guide pipe in a sleeving mode, the locking threaded sleeve is screwed to be in threaded connection with the locking threaded ring, one end of the T-shaped sealing ring is pushed to be inserted into the first rubber sealing ring, and therefore the first rubber sealing ring is extruded to deform and fills a gap between the locking threaded ring and the air guide pipe; therefore, the connection stability and sealing performance between the evaporation beaker and the gas guide pipe are effectively improved, and the evaporation efficiency of the device and the accuracy of experimental results are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of evaporators, in particular to a high-sealing rotary evaporator. BACKGROUND

[0002] The rotary evaporator is a kind of laboratory equipment widely used in the fields of chemical synthesis, drug extraction, food processing, etc. The core function of the equipment is to quickly remove the solvent in the solution through the method of reduced pressure distillation, so as to realize the efficient concentration and separation and purification of the solution. In the laboratory and industrial production, the rotary evaporator is favored because of its high evaporation efficiency and convenient operation.

[0003] The existing rotary evaporator usually uses a rubber ring as a sealing material, which is filled between the evaporation flask and the evaporation tube, and then the evaporation flask and the evaporation tube are fixed by a clamp. Some high-end rotary evaporators use "Teflon + FV rubber, fluorinated rubber double sealing ring" technology to ensure better sealing. In addition, the rotary evaporator also includes electric lifting operation, liquid crystal digital display, vertical double snake-shaped condenser and other advanced functions to improve the convenience of operation and the evaporation efficiency. In terms of vacuum degree, rotation speed, water bath temperature, condenser, etc., the existing technology can improve the evaporation efficiency through precise control.

[0004] Although the existing rotary evaporator has been relatively mature in design, there are still some problems of poor sealing in actual use. The traditional way of fixing the evaporation flask and the evaporation tube by a clamp and cooperating with a rubber ring to realize sealing is easy to cause the sealing performance to decline due to improper installation of the clamp, thereby affecting the evaporation efficiency and the accuracy of experimental results. Practical new type content

[0005] The application aims to solve the problem that the traditional way of fixing the evaporation flask and the evaporation tube by a clamp and cooperating with a rubber ring to realize sealing is easy to cause the sealing performance to decline due to improper installation of the clamp, thereby affecting the evaporation efficiency and the accuracy of experimental results, and provides a high-sealing rotary evaporator.

[0006] The application specifically adopts the following technical solutions to achieve the above-mentioned purpose:

[0007] The utility model provides a high seal rotary evaporator, including the base, one end of base is fixedly connected with water bath heater, one end of base is installed with the three -way pipe, the top of three -way pipe is fixedly connected with condenser pipe, the bottom of three -way pipe is fixedly connected with collection pipe, the input of three -way pipe is fixedly connected with the connecting pipe, the top of connecting pipe is fixedly connected with vacuum pump, the input of connecting pipe is rotatably connected with the air -guide pipe, one end of air -guide pipe is equipped with T type sealing ring, and one end of air -guide pipe is equipped with locking screw sleeve, T type sealing ring is installed in locking screw sleeve's inside, the input of air -guide pipe is fixedly connected with sealed resistance ring, one end of sealed resistance ring is fixedly connected with rubber sealing ring no.

[0008] Through the cooperation of the locking screw sleeve, the T-shaped sealing ring and the rubber sealing ring, when the locking screw sleeve is set on the input end of the air guide pipe, the T-shaped sealing ring is inserted into the rubber sealing ring by screwing the locking screw sleeve and the locking screw ring, thereby extruding the rubber sealing ring to generate deformation and filling the gap between the locking screw ring and the air guide pipe, which effectively improves the connection stability and sealing performance between the evaporation beaker and the air guide pipe, and improves the evaporation efficiency of the device and the accuracy of the experimental results.

[0009] Further, the lifting mechanism includes lifting slide rods symmetrically fixed to one end of the base, a T-shaped lifting plate slidably connected between the two lifting slide rods, support rods symmetrically fixed to the top of the T-shaped lifting plate, the support rods fixed to one end of the three-way pipe, a lifting screw rod rotatably connected to one end of the base, the bottom of the T-shaped lifting plate passing through the base and threadedly connected to the lifting screw rod, and a lifting assembly installed at one end of the base.

[0010] Through the cooperation of the lifting assembly, the lifting screw rod and the T-shaped lifting plate, when the lifting assembly is started, the lifting screw rod and the T-shaped lifting plate are threadedly connected, and the T-shaped lifting plate drives the support rods and the three-way pipe to move along the length direction of the lifting slide rods, effectively improving the practicability of the device.

[0011] Further, the lifting assembly includes a lifting worm gear fixed to one end of the lifting screw rod, a lifting worm rotatably connected to one end of the base and engaged with the lifting worm gear, a lifting motor fixed to one end of the base, and the output end of the lifting motor fixedly connected to the lifting worm.

[0012] By adopting the technical scheme, the lifting worm gear and the lifting worm are used in cooperation, the lifting motor is started to drive the lifting worm gear and the lifting worm to engage, the lifting worm gear drives the lifting screw rod to rotate, the lifting screw rod is conveniently driven to rotate, and the practicability of the device is further improved.

[0013] Further, the rotating assembly comprises an installation plate fixedly connected to one end of the connecting pipe, one end of the installation plate is fixedly connected with a rotating motor, one end of the air guide pipe is fixedly connected with a bevel gear one, and an output end of the rotating motor is fixedly connected with a bevel gear two engaged with the bevel gear one.

[0014] By adopting the technical scheme, the bevel gear two and the bevel gear one are used in cooperation, the rotating motor is started to drive the bevel gear two and the bevel gear one to engage, the bevel gear one drives the air guide pipe to rotate, and the practicability of the device is further improved.

[0015] Further, one end of the air guide pipe is fixedly connected with a limiting ring, and the bevel gear two is installed between the connecting pipe and the limiting ring.

[0016] By adopting the technical scheme, the limiting ring and the locking threaded sleeve are used in cooperation, the movement distance of the locking threaded sleeve along the length direction of the air guide pipe is limited, the abrasion between the locking threaded sleeve and the bevel gear two due to collision is effectively reduced, and the service life of the device is prolonged.

[0017] Further, one side of the T-shaped sealing ring is fixedly connected with a rubber sealing ring two, and the rubber sealing ring two is in flexible contact with one end of the locking threaded ring.

[0018] By adopting the technical scheme, the rubber sealing ring two, the T-shaped sealing ring and the locking threaded ring are used in cooperation, when the T-shaped sealing ring and the locking threaded ring are in contact by tightening the locking threaded sleeve, the rubber sealing ring two is filled between the T-shaped sealing ring and the locking threaded ring by using the deformation characteristics of the rubber sealing ring two, and the connection sealing property between the locking threaded ring and the air guide pipe is further improved.

[0019] Further, one end of the locking threaded sleeve is fixedly connected with a heat insulation handle, and one end of the locking threaded ring is fixedly connected with a heat insulation ring.

[0020] By adopting the technical scheme, the heat insulation ring and the heat insulation handle are used in cooperation, the heat transfer between the hand and the locking threaded sleeve and the locking threaded ring is effectively reduced, and the safety of the device is improved.

[0021] Further, a plurality of grooves are uniformly arranged on the periphery of the evaporation beaker.

[0022] By adopting the technical scheme, the heat exchange area inside the evaporation beaker is effectively increased, the raw materials inside the evaporation beaker are heated more uniformly, and the heating efficiency of the raw materials inside the evaporation beaker is improved.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By using the locking thread sleeve in cooperation with the T-shaped sealing ring and the rubber sealing ring, when the locking thread ring is arranged at the input end of the air guide pipe, the locking thread sleeve is screwed to form a threaded connection with the locking thread ring, and the one end of the T-shaped sealing ring is inserted into the rubber sealing ring, so as to extrude the rubber sealing ring to generate deformation, and fill the gap between the locking thread ring and the air guide pipe, thereby effectively improving the connection stability and sealing performance between the evaporation beaker and the air guide pipe, and improving the evaporation efficiency of the device and the accuracy of the experimental results.

[0025] 2. When the locking thread sleeve is tightened to push the T-shaped sealing ring into the rubber sealing ring, and the one end of the locking thread ring is in contact, the T-shaped sealing ring drives the rubber sealing ring to be in contact with the locking thread ring, and the rubber sealing ring is deformed under stress, thereby filling the contact surface between the locking thread ring and the T-shaped sealing ring, and further improving the connection sealing performance between the locking thread ring and the air guide pipe. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of the device body in the present application.

[0027] Figure 2 is a front view of the device body in the present application.

[0028] Figure 3 is an exploded view of the connection relationship between the air guide pipe and the locking thread ring in the present application.

[0029] Figure 4 is a front view of the device body in the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS:

[0031] 1, base; 2, water bath heater; 3, three-way pipe; 4, condenser; 5, collection pipe; 6, connecting pipe; 7, vacuum pump; 8, air guide pipe; 9, T-shaped sealing ring; 10, locking threaded sleeve; 11, sealing abutting ring; 12, rubber sealing ring one; 13, locking threaded ring; 14, evaporation beaker; 15, lifting slide rod; 16, T-shaped lifting plate; 17, support rod; 18, lifting screw; 19, lifting worm gear; 20, lifting worm; 21, lifting motor; 22, mounting plate; 23, rotary motor; 24, bevel gear one; 25, bevel gear two; 26, limiting ring; 27, rubber sealing ring two; 28, heat insulation handle; 29, heat insulation ring; 30, groove. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying drawings Figure 1 The present application is further described in detail.

[0033] The embodiment of the present application discloses a high-sealing rotary evaporator.

[0034] Reference Figure 1 - Figure 4 The high-sealing rotary evaporator comprises a base 1, one end of the base 1 is fixedly connected with a water bath heater 2, one end of the base 1 is provided with a three-way pipe 3, the top of the three-way pipe 3 is fixedly connected with a condenser 4, the bottom of the three-way pipe 3 is fixedly connected with a collection pipe 5, the input end of the three-way pipe 3 is fixedly connected with a connecting pipe 6, the top of the connecting pipe 6 is fixedly connected with a vacuum pump 7, the input end of the connecting pipe 6 is rotatably connected with an air guide pipe 8, one end of the air guide pipe 8 is sleeved with a T-shaped sealing ring 9, and one end of the air guide pipe 8 is sleeved with a locking threaded sleeve 10, the T-shaped sealing ring 9 is installed in the locking threaded sleeve 10, the input end of the air guide pipe 8 is fixedly connected with a sealing abutting ring 11, one end of the sealing abutting ring 11 is fixedly connected with a rubber sealing ring one 12, one end of the T-shaped sealing ring 9 is embedded in the rubber sealing ring one 12, the input end of the air guide pipe 8 is sleeved with a locking threaded ring 13, the input end of the locking threaded ring 13 is fixedly connected with an evaporation beaker 14, one end of the base 1 is provided with a lifting mechanism, and one end of the connecting pipe 6 is provided with a rotary assembly.

[0035] The lifting mechanism comprises lifting slide rods 15 which are symmetrically fixedly connected to one end of the base 1, a T-shaped lifting plate 16 which is slidably connected between the two lifting slide rods 15, support rods 17 which are symmetrically fixedly connected to the top of the T-shaped lifting plate 16, and are fixedly connected to one end of the three-way pipe 3, a lifting screw 18 which is rotatably connected to one end of the base 1, and a lifting assembly which is installed at one end of the base 1 and is threadedly connected with the T-shaped lifting plate 16.

[0036] And, the lifting assembly comprises a lifting worm gear 19 fixedly connected to one end of the lifting screw rod 18, one end of the base 1 is rotatably connected with a lifting worm 20 engaged with the lifting worm gear 19, and one end of the base 1 is fixedly connected with a lifting motor 21, and the output end of the lifting motor 21 is fixedly connected with the lifting worm 20;

[0037] And, the rotating assembly comprises a mounting plate 22 fixedly connected to one end of the connecting pipe 6, one end of the mounting plate 22 is fixedly connected with a rotating motor 23, one end of the air guide pipe 8 is fixedly connected with a bevel gear one 24, and the output end of the rotating motor 23 is fixedly connected with a bevel gear two 25 engaged with the bevel gear one 24.

[0038] In use, first, the evaporation beaker 14 is manually pulled to drive the locking screw ring 13 to move close to one end of the air guide pipe 8, and the locking screw ring 13 is sleeved on the input end of the air guide pipe 8, then the locking screw sleeve 10 is pulled to drive the T-shaped sealing ring 9 to move close to the locking screw ring 13 along the length direction of the air guide pipe 8, and the one end of the T-shaped sealing ring 9 is embedded in the inside of the rubber sealing ring one 12, at the same time, the rubber sealing ring one 12 is extruded by the T-shaped sealing ring 9 to generate deformation and fill the gap between the locking screw ring 13 and the air guide pipe 8, so as to improve the sealing effect between the locking screw ring 13 and the air guide pipe 8, then the locking screw sleeve 10 and the locking screw ring 13 are threadedly connected by manually rotating the locking screw sleeve 10, and the one end of the T-shaped sealing ring 9 is completely embedded in the inside of the rubber sealing ring one 12 along the length direction of the air guide pipe 8, at the same time, the sealing and fixing between the locking screw ring 13 and the air guide pipe 8 is realized;

[0039] Then, the lifting motor 21 is started to drive the lifting worm 20 engaged with the lifting worm gear 19, and the lifting screw rod 18 is rotated, so that the lifting screw rod 18 is threadedly connected with the T-shaped lifting plate 16, and the T-shaped lifting plate 16 drives the supporting rod 17 to move along the length direction of the lifting slide rod 15, at the same time, the supporting rod 17 drives the three-way pipe 3 and the evaporation beaker 14 to be embedded in the inside of the water bath heater 2 along the length direction of the lifting slide rod 15;

[0040] Next, the vacuum pump 7 is started to create a vacuum inside the evaporation beaker 14, the three-way pipe 3, the condenser 4, and the collecting pipe 5. Then, the water bath heater 2 is started to heat the raw material inside the evaporation beaker 14 in a water bath, causing the raw material inside the evaporation beaker 14 to boil under low temperature conditions. The steam generated by the boiling of the raw material inside the evaporation beaker 14 is guided into the condenser 4 along the gas guide pipe 8, the connecting pipe 6, and the three-way pipe 3 for condensation. Under the action of gravity, the condensate slides into the collecting pipe 5 for collection. At the same time, the rotary motor 23 is started to drive the bevel gear 25 to mesh with the bevel gear 24, and the bevel gear 24 drives the gas guide pipe 8 and the evaporation beaker 14 to rotate synchronously, so that the raw material inside the evaporation beaker 14 is heated more evenly. This effectively improves the connection stability and sealing between the evaporation beaker 14 and the gas guide pipe 8, and improves the evaporation efficiency of the device and the accuracy of the experimental results.

[0041] Reference Figure 1 - Figure 3 One end of the air guide pipe 8 is fixedly connected to a limiting ring 26, and a bevel gear 25 is installed between the connecting pipe 6 and the limiting ring 26.

[0042] In use, when the locking threaded sleeve 10 is loosened to release the threaded connection with the locking threaded ring 13, the locking threaded sleeve 10 can move freely along the length of the air guide pipe 8. At the same time, when the locking threaded sleeve 10 moves along the length of the air guide pipe 8, a limiting ring 26 is set to block one end of the locking threaded sleeve 10, so as to reduce the collision between the locking threaded sleeve 10 and the second bevel gear 25, reduce the wear between the locking threaded sleeve 10 and the second bevel gear 25, and extend the service life of the device.

[0043] Reference Figure 1 - Figure 3 A rubber sealing ring 27 is fixedly connected to one side of the T-shaped sealing ring 9, and the rubber sealing ring 27 forms a flexible contact with one end of the locking threaded ring 13.

[0044] When in use, tightening the locking threaded sleeve 10 pushes the T-shaped sealing ring 9 into the rubber sealing ring 12 and into contact with one end of the locking threaded ring 13. This causes the T-shaped sealing ring 9 to drive the rubber sealing ring 27 into contact with the locking threaded ring 13, and causes the rubber sealing ring 27 to deform under force, thereby filling the contact surface between the locking threaded ring 13 and the T-shaped sealing ring 9, further improving the sealing performance of the connection between the locking threaded ring 13 and the air guide tube 8.

[0045] Reference Figure 1 - Figure 3 A heat-insulating handle 28 is fixedly connected to one end of the locking threaded sleeve 10, and a heat-insulating ring 29 is fixedly connected to one end of the locking threaded ring 13.

[0046] In use, when the locking screw sleeve 10 needs to be screwed, the heat insulation ring 29 is held tightly by one hand, and the heat insulation handle 28 is rotated by the other hand to drive the locking screw sleeve 10 to rotate, so as to isolate the hands from direct contact with the locking screw sleeve 10 and the locking screw ring 13, reduce the risk of being scalded, and improve the safety of the device.

[0047] Referring to Figure 1 - Figure 3 The outer periphery of the evaporation beaker 14 is uniformly provided with a plurality of grooves 30.

[0048] In use, when the evaporation beaker 14 is loaded with raw materials and heated by the water bath heater 2, the grooves 30 increase the heating area inside the evaporation beaker 14, thereby effectively improving the heating efficiency of the raw materials inside the evaporation beaker 14 and improving the practicality of the device.

[0049] The implementation principle of the high-sealing rotary evaporator of the embodiment is as follows: first, the evaporation beaker 14 is pulled by hand to drive the locking screw ring 13 to approach one end of the air guide pipe 8 and be sleeved on the input end of the air guide pipe 8, then the locking screw sleeve 10 is pulled to push the T-shaped sealing ring 9 to approach the locking screw ring 13 along the length direction of the air guide pipe 8, and one end of the T-shaped sealing ring 9 is embedded in the inside of the rubber sealing ring one 12, at the same time, the rubber sealing ring one 12 is deformed by being extruded by the T-shaped sealing ring 9 and fills the gap between the locking screw ring 13 and the air guide pipe 8, so as to improve the sealing effect between the locking screw ring 13 and the air guide pipe 8, then the locking screw sleeve 10 and the locking screw ring 13 are screwed by hand, one end of the T-shaped sealing ring 9 is completely embedded in the inside of the rubber sealing ring one 12 along the length direction of the air guide pipe 8, at the same time, the rubber sealing ring two 27 is in contact with the locking screw ring 13 by the T-shaped sealing ring 9, and the rubber sealing ring two 27 is deformed by force, thereby filling the contact surface between the locking screw ring 13 and the T-shaped sealing ring 9, so as to realize the sealing and fixing between the locking screw ring 13 and the air guide pipe 8.

[0050] Then, the lifting motor 21 is started to drive the lifting worm 20 and the lifting worm gear 19 to engage, and drive the lifting screw rod 18 to rotate, so that the lifting screw rod 18 and the T-shaped lifting plate 16 are in threaded connection, and the T-shaped lifting plate 16 drives the support rod 17 to move along the length direction of the lifting slide rod 15, at the same time, the support rod 17 drives the three-way pipe 3 and the evaporation beaker 14 to be embedded in the inside of the water bath heater 2 along the length direction of the lifting slide rod 15.

[0051] Then, the vacuum pump 7 is started to realize the vacuumization of the inside of the evaporation beaker 14, the tee pipe 3, the condensing pipe 4 and the collecting pipe 5, and then the water bath heater 2 is started to heat the raw material in the evaporation beaker 14, so that the raw material in the evaporation beaker 14 boils under the low temperature condition, the steam generated by the boiling of the raw material in the evaporation beaker 14 is guided into the inside of the condensing pipe 4 along the guiding direction of the air guide pipe 8, the connecting pipe 6 and the tee pipe 3, and is condensed, and under the action of the gravity, the condensed water slides to the inside of the collecting pipe 5 for collection, and at the same time, the bevel gear two 25 is driven to engage with the bevel gear one 24 by starting the rotary motor 23, and the bevel gear one 24 drives the air guide pipe 8 and the evaporation beaker 14 to rotate synchronously, so that the raw material in the evaporation beaker 14 is heated more uniformly.

Claims

1. A high-sealing rotary evaporator, comprising a base (1), characterized in that: A water bath heater (2) is fixedly connected to one end of the base (1). A three-way pipe (3) is installed at one end of the base (1). A condenser pipe (4) is fixedly connected to the top of the three-way pipe (3). A collecting pipe (5) is fixedly connected to the bottom of the three-way pipe (3). A connecting pipe (6) is fixedly connected to the input end of the three-way pipe (3). A vacuum pump (7) is fixedly connected to the top of the connecting pipe (6). A gas guide pipe (8) is rotatably connected to the input end of the connecting pipe (6). A T-shaped sealing ring (9) is fitted on one end of the gas guide pipe (8), and a locking threaded sleeve (1) is fitted on the other end of the gas guide pipe (8). 0), the T-shaped sealing ring (9) is installed inside the locking threaded sleeve (10), the input end of the gas guide pipe (8) is fixedly connected to the sealing contact ring (11), one end of the sealing contact ring (11) is fixedly connected to the rubber sealing ring (12), one end of the T-shaped sealing ring (9) is embedded inside the rubber sealing ring (12), the input end of the gas guide pipe (8) is fitted with the locking threaded ring (13), the input end of the locking threaded ring (13) is fixedly connected to the evaporation beaker (14), one end of the base (1) is equipped with a lifting mechanism, and one end of the connecting pipe (6) is equipped with a rotating component.

2. The high-sealing rotary evaporator according to claim 1, characterized in that: The lifting mechanism includes lifting slide rods (15) symmetrically fixedly connected to one end of the base (1), a T-shaped lifting plate (16) slidably connected between the two lifting slide rods (15), a support rod (17) symmetrically fixedly connected to the top of the T-shaped lifting plate (16), the support rod (17) being fixedly connected to one end of the three-way pipe (3), a lifting screw (18) being rotatably connected to one end of the base (1), the bottom of the T-shaped lifting plate (16) passing through the base (1) and threadedly connected to the lifting screw (18), and a lifting assembly installed at one end of the base (1).

3. The high-sealing rotary evaporator according to claim 2, characterized in that: The lifting assembly includes a lifting worm gear (19) fixedly connected to one end of the lifting screw (18), a lifting worm (20) rotatably connected to one end of the base (1) and meshing with the lifting worm gear (19), and a lifting motor (21) fixedly connected to one end of the base (1), with the output end of the lifting motor (21) fixedly connected to the lifting worm (20).

4. The high-sealing rotary evaporator according to claim 1, characterized in that: The rotating assembly includes a mounting plate (22) fixedly connected to one end of the connecting pipe (6), a rotating motor (23) fixedly connected to one end of the mounting plate (22), a bevel gear (24) fixedly connected to one end of the air guide pipe (8), and a bevel gear (25) meshing with the bevel gear (24) fixedly connected to the output end of the rotating motor (23).

5. The high-sealing rotary evaporator according to claim 4, characterized in that: One end of the air guide pipe (8) is fixedly connected to a limiting ring (26), and the second bevel gear (25) is installed between the connecting pipe (6) and the limiting ring (26).

6. The high-sealing rotary evaporator according to claim 1, characterized in that: A rubber sealing ring 27 is fixedly connected to one side of the T-shaped sealing ring (9), and the rubber sealing ring 27 forms a flexible contact with one end of the locking threaded ring (13).

7. The high-sealing rotary evaporator according to claim 1, characterized in that: One end of the locking threaded sleeve (10) is fixedly connected to a heat-insulating handle (28), and one end of the locking threaded ring (13) is fixedly connected to a heat-insulating ring (29).

8. The high-sealing rotary evaporator according to claim 1, characterized in that: The evaporation beaker (14) has a plurality of grooves (30) evenly arranged around its periphery.

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