Vacuum drying buffer equipment

Abstract

The utility model relates to the technical field of vacuum drying, and provides vacuum drying buffer equipment which comprises a tank body, the air inlet pipe is arranged at the top of the tank body; one end of the air outlet pipe is connected with the side surface of the tank body; the liquid discharge pipe is arranged at the bottom of the tank body; the condensation pipe is arranged in the tank body and is communicated with the air inlet pipe; wherein the condensation pipe is an annular coil pipe extending downwards; a water-blocking breathable film is arranged at the joint of the air outlet pipe and the tank body; the buffer tank is additionally arranged on the vacuum pipeline and used for collecting condensed liquid, the condensation time is prolonged through the annular condensation pipe in the tank body, steam has enough time to be converted into liquid in the tank, the liquid is stored in the tank and finally discharged through the liquid discharging pipe, backflow of the liquid in the vacuum pipeline is effectively prevented, and the quality of medicine is guaranteed. Besides, the water-blocking breathable film is arranged at the connecting port of the air outlet pipe and the tank body, so that condensed liquid is blocked and cannot enter the vacuum pump through the air outlet pipe, and the influence on the performance of the vacuum pump is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying, in particular to a vacuum drying buffer device. Background Art

[0002] In the biopharmaceutical industry, vacuum drying technology is generally used for medicines that need to be stored for a long time. Vacuum drying technology is a drying method in which the material is placed under vacuum negative pressure conditions, and is heated appropriately to reach the boiling point under negative pressure or is cooled to solidify the material and then dried through the melting point.

[0003] When vacuum drying equipment (such as vacuum oven, double cone rotary vacuum drying oven) is used to dry high boiling point solvents (such as water, DMF, toluene) in the pharmaceutical workshop, the heated material will emit a large amount of hot and humid water vapor. Under the action of vacuum, the hot and humid water vapor will enter the vacuum system through the vacuum pipe, thereby achieving the purpose of drying the material. However, since the vacuum pipe is long and the pipe is not insulated, the steam will condense into liquid when passing through the stainless steel pipe. There is a possibility that some liquid will flow back into the vacuum drying equipment and penetrate into the medicine, affecting the quality of the medicine. It may also enter the vacuum pump, thereby affecting the performance of the vacuum pump and eventually causing damage to the vacuum pump. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum drying buffer device to solve the problem proposed in the above background technology that steam condenses into liquid when passing through a stainless steel tube, part of the liquid flows back into the vacuum drying device and penetrates into the medicine to affect the quality of the medicine, or enters into the vacuum pump to affect the performance of the vacuum pump, and finally causes damage to the vacuum pump.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum drying buffer device, comprising:

[0007] Tank;

[0008] An air inlet pipe is arranged on the top of the tank body;

[0009] An air outlet pipe, one end of which is connected to the side of the tank body and the other end of which is connected to the vacuum pump;

[0010] A liquid discharge pipe, arranged at the bottom of the tank;

[0011] A condenser pipe is arranged inside the tank body and is connected to the air inlet pipe;

[0012] Wherein, the condenser is an annular coil extending downward; and a water-blocking and breathable membrane is provided at the connection port between the air outlet pipe and the tank body.

[0013] Preferably, a check valve is provided on the air intake pipe.

[0014] Preferably, a sleeve is provided at the connection between the air outlet pipe and the tank body, and a mounting hole is provided on the sleeve.

[0015] Preferably, a support column is provided on the outside of the tank body, one end of the support column is installed in the installation hole, and the other end is connected to the ground.

[0016] Preferably, a thermometer interface is also provided on the top of the tank body.

[0017] Preferably, the drain pipe, air inlet pipe, air outlet pipe and thermometer interface are all provided with control valves via flanges.

[0018] Preferably, a visual window is provided on the tank body.

[0019] Preferably, the bottom of the tank is U-shaped.

[0020] Preferably, an anti-corrosion layer is applied on the inner wall of the tank.

[0021] Compared with the prior art, the beneficial effects of the utility model are: a buffer tank is added to the vacuum pipeline to collect the condensed liquid, and the annular condenser inside the tank body is used to increase the condensation time, so that the steam has enough time to be converted into liquid in the buffer tank and stored in the tank, and finally it is discharged through the drain pipe, which effectively prevents the backflow of liquid in the vacuum pipeline and ensures the quality of the medicine; in addition, a water-blocking and breathable membrane is provided at the inlet of the air outlet pipe, so that the condensed liquid is blocked and will not enter the vacuum pump through the air outlet pipe, thereby avoiding affecting the performance of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the external structure of an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the position of the water-blocking and breathable membrane in an embodiment of the utility model.

[0026] Figure numerals: 1. tank body; 2. air inlet pipe; 21. check valve; 3. air outlet pipe; 4. drain pipe; 5. condenser; 6. water-blocking and breathable membrane; 7. support column; 8. thermometer interface; 81. thermometer; 9. visual window; 10. anti-corrosion layer. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the present invention is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] like Figures 1 to 3As shown, the embodiment of the utility model provides a vacuum drying buffer device, comprising:

[0033] Tank 1;

[0034] An air inlet pipe 2 is provided at the top of the tank body 1;

[0035] An air outlet pipe 3, one end of which is connected to the side of the tank body 1, and the other end is connected to the vacuum pump;

[0036] A drain pipe 4 is provided at the bottom of the tank body 1;

[0037] A condenser pipe 5 is disposed inside the tank body 1 and is connected to the air inlet pipe 2;

[0038] The condenser tube 5 is a ring-shaped coil extending downward; a water-blocking and breathable membrane 6 is provided at the connection between the air outlet pipe 3 and the tank body 1 .

[0039] In order to facilitate the outflow of liquid in the condenser 5, the condenser 5 is a downwardly inclined annular coil, and the outlet of the condenser 5 is facing away from the air outlet pipe 3 to prevent steam from entering the air outlet pipe 3 as soon as it is discharged from the condenser 5.

[0040] Specifically, the water-blocking breathable membrane 6 is a PE water-blocking breathable membrane, which can block the condensed liquid and prevent the liquid from entering the outlet pipe 3, while the steam can be discharged from the outlet pipe 3 through the water-blocking breathable membrane 6, balancing the pressure inside and outside the tank body 1, and the PE water-blocking breathable membrane is thin and light and will not occupy the internal space of the tank body 1.

[0041] When in use, the vacuum drying equipment dries the material. The vacuum pump is turned on to evacuate the drying box 1. Steam or hot water is passed through the heating coil in the vacuum drying equipment. After the material absorbs heat, it begins to volatilize hot and humid gas. The hot and humid gas enters the tank body 1 through the air inlet pipe 2 and condenses into liquid in the tank body 1.

[0042] The buffer device is added to the vacuum pipeline to collect the condensed liquid, and the annular condenser 5 inside the tank body 1 is used to increase the condensation time, so that the steam has enough time to be converted into liquid and stored in the tank body 1, and finally discharged through the drain pipe 4, thereby effectively preventing the backflow of liquid in the vacuum pipeline, ensuring product quality and complying with the requirements of the pharmaceutical production quality management specification; in addition, a water-blocking and breathable membrane 6 is provided at the inlet of the air outlet pipe 3 to block the condensed liquid and prevent it from entering the vacuum pump through the air outlet pipe 3, thereby avoiding affecting the performance of the vacuum pump.

[0043] In order to prevent the liquid in the tank body 1 from entering the vacuum drying device through the condenser 5 and the air inlet pipe 2, a check valve 21 is provided on the air inlet pipe 2 to prevent the backflow of the liquid.

[0044] Furthermore, a sleeve is provided at the connection between the air outlet pipe 3 and the tank body 1, and a mounting hole is provided on the sleeve.

[0045] Furthermore, a support column 7 is provided on the outside of the tank body 1 , one end of the support column 7 is installed in the installation hole, and the other end is connected to the ground, so as to support the tank body 1 .

[0046] Specifically, the connecting end between the support column 7 and the mounting hole is provided with a thread, and the support column 7 can be fixed in the mounting hole by a matching nut.

[0047] In order to ensure the safety of the buffer device, a thermometer interface 8 is further provided on the top of the tank body 1 for connecting a thermometer 81 to adjust the parameter changes in the tank body 1 in real time.

[0048] Furthermore, the drain pipe 4, the air inlet pipe 2, the air outlet pipe 3 and the thermometer interface 8 are all provided with control valves through flanges, which are respectively used to control the discharge of liquid in the tank body 1, the entry of gas, the discharge of gas and the monitoring of the temperature in the tank body 1.

[0049] In order to facilitate observation of the situation in the tank 1, Figure 2 As shown, a visual window 9 is provided on the tank body 1 .

[0050] Furthermore, the bottom of the tank body 1 is U-shaped, which is convenient for the accumulation and discharge of liquid. Specifically, the top of the tank body 1 is inverted U-shaped, which is convenient for the dripping of liquid after the steam condenses.

[0051] Since the interior of the tank body 1 needs to be in contact with liquid for a long time, an anti-corrosion layer 10 is applied on the inner wall of the tank body 1 to prevent the inner wall of the tank body 1 from being corroded.

[0052] It should be noted that, in order to ensure the sealing between the tank body 1 and the pipeline, the air inlet pipe 2, the air outlet pipe 3, the liquid discharge pipe 4, the thermometer interface 8 and the tank body 1 are all connected by welding.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vacuum drying buffer device, characterized in that: include: Tank (1); An air inlet pipe (2) is arranged on the top of the tank body (1); An air outlet pipe (3), one end of which is connected to the side of the tank body (1) and the other end of which is connected to the vacuum pump; A liquid discharge pipe (4) is arranged at the bottom of the tank body (1); A condenser pipe (5) is arranged inside the tank body (1) and is connected to the air inlet pipe (2); The condenser pipe (5) is a ring-shaped coil extending downward; and a water-blocking and breathable membrane (6) is provided at the connection between the air outlet pipe (3) and the tank body (1).

2. The vacuum drying buffer equipment according to claim 1, characterized in that: The air intake pipe (2) is provided with a check valve (21).

3. The vacuum drying buffer equipment according to claim 1, characterized in that: A sleeve is provided at the connection between the air outlet pipe (3) and the tank body (1), and a mounting hole is provided on the sleeve.

4. The vacuum drying buffer equipment according to claim 3, characterized in that: A support column (7) is provided on the outside of the tank body (1); one end of the support column (7) is mounted in the mounting hole, and the other end is connected to the ground.

5. The vacuum drying buffer equipment according to claim 1, characterized in that: The top of the tank body (1) is also provided with a thermometer interface (8).

6. The vacuum drying buffer equipment according to claim 5, characterized in that: The liquid discharge pipe (4), the air inlet pipe (2), the air outlet pipe (3) and the thermometer interface (8) are all provided with control valves via flanges.

7. The vacuum drying buffer equipment according to claim 1, characterized in that: The tank body (1) is provided with a viewing window (9).

8. The vacuum drying buffer equipment according to claim 1, characterized in that: The bottom of the tank body (1) is U-shaped.

9. The vacuum drying buffer equipment according to claim 1, characterized in that: An anti-corrosion layer (10) is applied on the inner wall of the tank body (1).

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