Vacuum negative-pressure low-temperature evaporator

Abstract

The utility model discloses a vacuum negative-pressure low-temperature evaporator which comprises a heater, the heater is in butt joint with the evaporator through a first guide pipe, the evaporator is in butt joint with a condenser through a guide pipe assembly, the condenser is in butt joint with a vacuum pump through a second guide pipe, and the guide pipe assembly can be automatically expanded when air pressure is increased. A discharging port of the heater is in butt joint with a feeding port of the first guide pipe in a flange plate mode, a discharging port of the first guide pipe is in butt joint with a feeding port of the evaporator in a flange plate mode, and an outlet of the condenser is in butt joint with the second guide pipe in a flange plate mode. The evaporator relates to the technical field of evaporators, by arranging the guide pipe assembly, the volume of the guide pipe assembly can be dynamically adjusted according to the air pressure of steam exhausted by the evaporator, so that air flow is relatively balanced, and the heat exchange efficiency is improved. Therefore, the operation stability of the vacuum negative-pressure low-temperature evaporator is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a vacuum negative pressure low-temperature evaporator. Background Art

[0002] The working principle of vacuum negative pressure low temperature evaporator is to use low temperature evaporation technology to separate and purify materials by lowering the evaporation temperature of materials under vacuum environment. Specifically, vacuum low temperature evaporator is mainly composed of heater, evaporator, condenser and vacuum pump. After the material is heated to a certain temperature in the heater, it enters the evaporator for evaporation. The evaporated gas enters the condenser and condenses into liquid, and finally discharged through the vacuum pump.

[0003] In the existing vacuum negative pressure low-temperature evaporator, the evaporator and the condenser are connected by a conduit, and the length of the conduit is constant. Therefore, when the pressure of the steam discharged from the evaporator is too high, it will cause the airflow to be unstable, and finally cause the overall operation of the vacuum negative pressure low-temperature evaporator to be unstable. Utility Model Content

[0004] In view of the problems existing in the existing vacuum negative pressure low-temperature evaporator, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a vacuum negative pressure low-temperature evaporator, which solves the problem of the existing vacuum negative pressure low-temperature evaporator. The evaporator and the condenser are connected by a conduit, and the length of the conduit is constant. Therefore, when the pressure of the steam discharged from the evaporator is too high, it will cause the airflow to be unstable, and finally cause the overall operation of the vacuum negative pressure low-temperature evaporator to be unstable.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A vacuum negative pressure low-temperature evaporator comprises a heater, wherein the heater is connected to the evaporator through a first conduit, the evaporator is connected to a condenser through a conduit assembly, and the condenser is connected to a vacuum pump through a second conduit. The conduit assembly can automatically expand when the air pressure increases.

[0008] As a preferred solution of the vacuum negative pressure low-temperature evaporator described in the utility model, the discharge port of the heater and the feed port of the first conduit are connected by a flange, and the discharge port of the first conduit and the feed port of the evaporator are connected by a flange.

[0009] As a preferred solution of the vacuum negative pressure low-temperature evaporator described in the utility model, the outlet of the condenser and the second conduit are connected by a flange, and the other end of the second conduit and the inlet end of the vacuum pump are connected by a flange.

[0010] As a preferred solution of the vacuum negative pressure low-temperature evaporator described in the utility model, a first valve is installed on the first conduit, and a second valve is installed on the second conduit.

[0011] As a preferred solution of the vacuum negative pressure low-temperature evaporator described in the utility model, wherein: the conduit assembly includes an expansion pipeline;

[0012] The expansion pipeline includes a third conduit and a fourth conduit, one end of the fourth conduit extends into the inner cavity of the third conduit, one end of the fourth conduit is fixedly connected to a sealing ring, the inner wall of the third conduit is slidably connected to the sealing ring, and a spring is sleeved on the fourth conduit, and the spring is located in the inner cavity of the third conduit.

[0013] As a preferred solution of a vacuum negative pressure low-temperature evaporator described in the utility model, the expansion pipeline also includes a first joint connected to the third conduit, the end of the first joint is connected to a first hose, one end of the first hose is connected to a second joint, and the second joint is connected to the discharge port of the evaporator.

[0014] As a preferred solution of the vacuum negative pressure low-temperature evaporator described in the utility model, the expansion pipeline also includes a third joint connected to the fourth conduit, the end of the third joint is connected to the second hose, the other end of the second hose is connected to the fourth joint, and the end of the fourth joint is connected to the inlet of the condenser.

[0015] Compared with existing technologies:

[0016] By setting up the conduit assembly, the volume of the conduit assembly can be dynamically adjusted according to the pressure of the steam discharged from the evaporator to make the airflow relatively balanced, thereby ensuring the stability of the operation of the vacuum negative pressure low-temperature evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure provided for Example 1 of the utility model;

[0018] Figure 2 A cross-sectional view of a catheter assembly provided in Example 1 of the utility model;

[0019] Figure 3 A schematic diagram of the structure provided for Embodiment 2 of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure provided for Example 3 of the present utility model.

[0021] In the figure: heater 1, evaporator 2, condenser 3, vacuum pump 4, first conduit 5, first valve 51, conduit assembly 6, third conduit 61, fourth conduit 62, sealing ring 63, spring 64, first hose 7, second conduit 8, second valve 81, first joint 9, fourth joint 10, second hose 11, third joint 12, second joint 13. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Embodiment 1:

[0024] The utility model provides a vacuum negative pressure low temperature evaporator, please refer to Figure 1-2 , including a heater 1, the heater 1 is connected to the evaporator 2 through a first conduit 5, the evaporator 2 is connected to the condenser 3 through a conduit assembly 6, and the condenser 3 is connected to the vacuum pump 4 through a second conduit 8. The above structure is the structure of an existing vacuum negative pressure low-temperature evaporator and will not be repeated here. The conduit assembly can automatically expand when the air pressure increases, thereby ensuring the relative stability of the airflow between the evaporator 2 and the condenser 3.

[0025] The discharge port of the heater 1 and the feed port of the first conduit 5 are butted together by means of a flange, and the discharge port of the first conduit 5 and the feed port of the evaporator 2 are butted together by means of a flange; the connection strength of both ends of the first conduit 5 is ensured.

[0026] The outlet of the condenser 3 is butted against the second conduit 8 by means of a flange, and the other end of the second conduit 8 is butted against the inlet end of the vacuum pump 4 by means of a flange.

[0027] A first valve 51 is installed on the first conduit 5 , and a second valve 81 is installed on the second conduit 8 .

[0028] The catheter assembly 6 includes an expansion pipe;

[0029] The expansion pipeline includes a third conduit 61 and a fourth conduit 62. During the specific installation, only the fourth conduit 62 is fixed to ensure that the third conduit 61 can be retracted. One end of the fourth conduit 62 extends into the inner cavity of the third conduit 61. One end of the fourth conduit 62 is fixedly connected with a sealing ring 63. The inner wall of the third conduit 61 is slidably connected with the sealing ring 63. A spring 64 is sleeved on the fourth conduit 62, and the spring 64 is located in the inner cavity of the third conduit 61. When the air pressure in the third conduit 61 increases, under the action of the air pressure, the sealing ring 63 is driven to drive the fourth conduit 62 to move to the right together, so that the total volume of the third conduit 61 mixed with the fourth conduit 62 increases, thereby reducing the air pressure and making the airflow relatively stable.

[0030] The expansion pipeline also includes a first joint 9 connected to the third conduit 61 , the end of the first joint 9 is connected to a first hose 7 , one end of the first hose 7 is connected to a second joint 13 , and the second joint 13 is connected to the discharge port of the evaporator 2 .

[0031] During specific use, the heater 1 heats the material, and then the material enters the evaporator 2 through the first conduit 5 for evaporation, and the evaporated steam enters the third conduit 61 and the fourth conduit 62. When the air pressure is too high, under the action of the air pressure, the sealing ring 63 and the fourth conduit 62 slide as a whole to expand the volume of the third conduit 61 and the fourth conduit 62, thereby lowering the air pressure and making the airflow relatively stable; when the air pressure becomes low, the compressed spring 64 drives the sealing ring 63 and the fourth conduit 62 to reset.

[0032] Embodiment 2:

[0033] Refer to the attached Figure 3 , which is different from Example 1, is that the expansion pipeline includes a third joint 12 connected to the fourth conduit 62, the end of the third joint 12 is connected to the second hose 11, the other end of the second hose 11 is connected to the fourth joint 10, and the end of the fourth joint 10 is connected to the inlet of the condenser 3; at this time, only the third conduit 61 needs to be fixed to ensure that the fourth conduit 62 can be retracted.

[0034] Embodiment 3:

[0035] Refer to the attached Figure 4 , which is different from Example 1, is that the expansion pipeline also includes a third joint 12 connected to the fourth conduit 62, the end of the third joint 12 is connected to the second hose 11, the other end of the second hose 11 is connected to the fourth joint 10, and the end of the fourth joint 10 is connected to the inlet of the condenser 3; at this time, one of the third conduit 61 and the fourth conduit 62 is fixed.

[0036] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vacuum negative pressure low temperature evaporator, comprising a heater (1), wherein the heater (1) is connected to an evaporator (2) via a first conduit (5), the evaporator (2) is connected to a condenser (3) via a conduit assembly (6), and the condenser (3) is connected to a vacuum pump (4) via a second conduit (8). Features: The catheter assembly can automatically expand when the air pressure increases.

2. A vacuum negative pressure low temperature evaporator according to claim 1, It is characterized in that The discharge port of the heater (1) and the feed port of the first conduit (5) are butted against each other via a flange, and the discharge port of the first conduit (5) and the feed port of the evaporator (2) are butted against each other via a flange.

3. A vacuum negative pressure low temperature evaporator according to claim 1 or 2, It is characterized in that The outlet of the condenser (3) and the second conduit (8) are butt-jointed via a flange, and the other end of the second conduit (8) and the inlet end of the vacuum pump (4) are butt-jointed via a flange.

4. A vacuum negative pressure low temperature evaporator according to claim 3, It is characterized in that The first conduit (5) is installed with a first valve (51), and the second conduit (8) is installed with a second valve (81).

5. The vacuum negative pressure low temperature evaporator according to claim 1, It is characterized in that The catheter assembly (6) comprises an expansion pipe; The expansion pipeline comprises a third conduit (61) and a fourth conduit (62), one end of the fourth conduit (62) extends into the inner cavity of the third conduit (61), one end of the fourth conduit (62) is fixedly connected to a sealing ring (63), the inner wall of the third conduit (61) is slidably connected to the sealing ring (63), and a spring (64) is sleeved on the fourth conduit (62), and the spring (64) is located in the inner cavity of the third conduit (61).

6. A vacuum negative pressure low temperature evaporator according to claim 5, It is characterized in that The expansion pipeline further comprises a first joint (9) connected to the third conduit (61); a first hose (7) is connected to the end of the first joint (9); one end of the first hose (7) is connected to a second joint (13); and the second joint (13) is connected to the discharge port of the evaporator (2).

7. A vacuum negative pressure low temperature evaporator according to claim 5, It is characterized in that The expansion pipeline comprises a third joint (12) connected to the fourth conduit (62), the end of the third joint (12) is connected to the second hose (11), the other end of the second hose (11) is connected to the fourth joint (10), and the end of the fourth joint (10) is connected to the inlet of the condenser (3).

8. A vacuum negative pressure low temperature evaporator according to claim 6, It is characterized in that The expansion pipeline also includes a third joint (12) connected to the fourth conduit (62), the end of the third joint (12) is connected to the second hose (11), the other end of the second hose (11) is connected to the fourth joint (10), and the end of the fourth joint (10) is connected to the inlet of the condenser (3).

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