Online solvent recovery device for natamycin drying

Abstract

An online solvent recovery device for natamycin drying relates to the technical field of online solvent recovery and is applied to a drying oven, a fixing frame and a mounting frame are fixed to the side face of the drying oven, a condenser is mounted on the fixing frame and communicated with the interior of the drying oven through a guide pipe, and a fan is mounted at the joint of the guide pipe and the drying oven. An air inlet unit is installed at the position, close to the draught fan, of the guide pipe, an air outlet of the condenser communicates with the interior of the drying oven through a backflow pipe, an exhaust pipe is fixedly connected to the backflow pipe in a communicating mode, a multi-way valve is installed at the joint of the exhaust pipe and the backflow pipe, and a solvent storage tank is installed on the inner side of the installation frame. According to the online solvent recovery device for natamycin drying, ethanol can be recovered on line, the drying process is not affected, the consumption of ethanol is greatly reduced, the production cost is saved, and environmental hazards caused when ethanol is discharged along with tail gas are avoided.

Description

Technical Field

[0001] This utility model relates to the field of online solvent recovery technology, and in particular to an online solvent recovery device for drying natamycin. Background Technology

[0002] The extraction and crystallization process of natamycin often uses volatile organic solvents such as ethanol and isopropanol. The crystallized material usually contains about 70% solvent. When drying with a hot air drying oven, the solvent and water vapor will be discharged through the exhaust gas to finally meet the drying requirements. This will cause a large amount of ethanol to be wasted in each batch of drying, which will greatly increase the cost and cause environmental harm. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an online solvent recovery device for drying natamycin. It can recover ethanol online without affecting the drying process, greatly reducing ethanol consumption, saving production costs, and avoiding the environmental hazards caused by ethanol being discharged with the exhaust gas. It can effectively solve the problems in the background art.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0005] An online solvent recovery device for drying natamycin is applied to an oven. A fixing frame and a mounting frame are fixed to the sides of the oven. A condenser is mounted on the fixing frame and connected to the interior of the oven via a conduit. A fan is installed at the connection between the conduit and the oven, and an air inlet unit is installed on the conduit near the fan. The air outlet of the condenser is connected to the interior of the oven via a return pipe, which is connected to and fixed with an exhaust pipe. A multi-way valve is installed at the connection between the exhaust pipe and the return pipe. A solvent storage tank is installed inside the mounting frame and connected to the liquid outlet of the condenser via a delivery pipe equipped with a pneumatic ball valve. A drain unit is installed at the bottom of the solvent storage tank.

[0006] Furthermore, the air intake unit includes a switching valve, an air filter, and an air intake pipe. The air intake pipe is connected and fixed on the duct, and the switching valve and the air filter are both mounted on the air intake pipe.

[0007] Furthermore, the inner side of the air filter is provided with three sets of filter elements in sequence: coarse filter, fine filter, and sterilization filter.

[0008] Furthermore, it also includes a glass sight glass, which is mounted on a solvent storage tank.

[0009] Furthermore, the draining unit includes a magnetic pump and a drain pipe. The magnetic pump is installed at the bottom of the solvent storage tank and is connected to the inside of the solvent storage tank. The drain pipe is connected to and fixed at the pump outlet of the magnetic pump.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This online solvent recovery device for drying natamycin has the following advantages: The fan transports the gas in the drying oven to the condenser through the duct. The condenser condenses the ethanol in the dry air. Then, the pneumatic ball valve is opened, and the liquid ethanol enters the solvent storage tank through the delivery pipe. The dry air, after the ethanol has been removed, enters the drying oven through the return pipe. The heating fins in the drying oven heat it to 50°C to continue drying the material. In the initial stage of drying, the material is dried using an internal circulation method. After the ethanol recovery is completed, the switch valve is slightly opened, and at the same time, the exhaust pipe is slightly opened through the multi-way valve to introduce an appropriate amount of fresh air to accelerate the drying process until the material is completely dried. It can recover ethanol online without affecting the drying process, greatly reducing ethanol consumption, saving production costs, and avoiding the environmental hazards caused by ethanol being discharged with the exhaust gas. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the three-dimensional bottom structure of this utility model.

[0013] In the diagram: 1-Oven, 2-Return pipe, 3-Air inlet unit, 31-Switch valve, 32-Air filter, 33-Air inlet pipe, 4-Drainage unit, 41-Magnetic pump, 42-Drainage pipe, 5-Solvent storage tank, 6-Mounting bracket, 7-Multi-way valve, 8-Exhaust pipe, 9-Glass sight glass, 10-Fixing bracket, 11-Condenser, 12-Conduit, 13-Fan, 14-Pneumatic ball valve, 15-Transfer pipe. Detailed Implementation

[0014] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0015] Please see Figure 1-2This embodiment provides a technical solution: an online solvent recovery device for drying natamycin, applied to an oven 1. A fixing frame 10 and a mounting frame 6 are fixed to the sides of the oven 1. A condenser 11 is mounted on the fixing frame 10. The condenser 11 is connected to the interior of the oven 1 via a conduit 12. A fan 13 is installed at the connection between the conduit 12 and the oven 1, and an air inlet unit 3 is installed on the conduit 12 near the fan 13. The air outlet of the condenser 11 is connected to the interior of the oven 1 via a return pipe 2. An exhaust pipe 8 is fixedly connected to the return pipe 2, and a multi-way valve 7 is installed at the connection between the exhaust pipe 8 and the return pipe 2. A solvent storage tank 5 is installed inside the mounting frame 6. The solvent storage tank 5 is connected to the liquid outlet of the condenser 11 via a conveying pipe 15, and a pneumatic ball valve 14 is installed on the conveying pipe 15. A drain unit 4 is installed at the bottom of the oven. The blower 13 transports the gas in the oven 1 to the condenser 11 through the duct 12. The condenser 11 condenses the ethanol in the dry air. Then, the pneumatic ball valve 14 is opened, and the liquid ethanol enters the solvent storage tank 5 through the delivery pipe 15. The dry air, after the ethanol has been removed, enters the oven 1 through the return pipe 2. The heating fins in the oven 1 heat it to 50°C to continue drying the material. In the early stage of drying, the material is dried by internal circulation. After the ethanol is recovered, the switch valve 31 is slightly opened, and at the same time, the exhaust pipe 8 is slightly opened through the multi-way valve 7 to introduce an appropriate amount of fresh air to accelerate the drying process until the material is completely dried. It can recover ethanol online without affecting the drying process, which greatly reduces the consumption of ethanol, saves production costs, and avoids the environmental hazards caused by ethanol being discharged with the exhaust gas.

[0016] The air intake unit 3 includes a switch valve 31, an air filter 32, and an air intake pipe 33. The air intake pipe 33 is connected and fixed on the duct 12. The switch valve 31 and the air filter 32 are both mounted on the air intake pipe 33. When air is introduced into the air intake pipe 33, the air is filtered by the air filter 32 to ensure that the drying process is in a sterile environment.

[0017] The air filter 32 has three sets of filter elements arranged in sequence on the inside: coarse filter, fine filter and sterilization filter, thus ensuring the air filtration effect.

[0018] It also includes a glass sight glass 9, which is mounted on the solvent storage tank 5 and is used to observe the volume of the solvent storage tank 5.

[0019] The draining unit 4 includes a magnetic pump 41 and a drain pipe 42. The magnetic pump 41 is installed at the bottom of the solvent storage tank 5 and is connected to the inside of the solvent storage tank 5. The drain pipe 42 is connected and fixed at the pump outlet of the magnetic pump 41. The magnetic pump 41 drains the ethanol solvent in the solvent storage tank 5 through the drain pipe 42.

[0020] The working principle of the online solvent recovery device for drying natamycin provided by this utility model is as follows: the fan 13 delivers the gas in the oven 1 to the condenser 11 through the conduit 12. The condenser 11 condenses the ethanol in the dry air. Then, the pneumatic ball valve 14 is opened, and the liquid ethanol enters the solvent storage tank 5 through the delivery pipe 15. Then, the magnetic pump 41 discharges the ethanol solvent in the solvent storage tank 5 through the drain pipe 42. The dry air that has been de-ethanoled enters the oven 1 through the return pipe 2. The heating fins in the oven 1 heat it to 50°C and continue to dry the material. In the initial stage of drying, the material is dried by internal circulation. After the ethanol recovery is completed, the switch valve 31 is slightly opened, and at the same time, the exhaust pipe 8 is slightly opened through the multi-way valve 7 to introduce an appropriate amount of fresh air to accelerate the drying process until the material is completely dried. When the air is replenished through the air inlet pipe 33, the air is filtered through the air filter 32 to ensure that the drying process is in a sterile environment.

[0021] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The entire operation process of this scheme is controlled by an electrical control cabinet, which adopts a PLC programmable controller automated control system. The cooling temperature of the condenser 11 is -30℃.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0023] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. An online solvent recovery device for drying natamycin, applied to an oven (1), characterized in that: The oven (1) is fixed with a mounting bracket (10) and a mounting bracket (6) on its side. A condenser (11) is mounted on the mounting bracket (10). The condenser (11) is connected to the inside of the oven (1) through a conduit (12). A fan (13) is installed at the connection between the conduit (12) and the oven (1). An air inlet unit (3) is installed on the conduit (12) near the fan (13). The air outlet of the condenser (11) is connected to a return pipe (2). The oven (1) is connected to the interior of the oven. An exhaust pipe (8) is fixed on the return pipe (2), and a multi-way valve (7) is installed at the connection between the exhaust pipe (8) and the return pipe (2). A solvent storage tank (5) is installed on the inner side of the mounting bracket (6). The solvent storage tank (5) is connected to the liquid outlet of the condenser (11) through the delivery pipe (15), and a pneumatic ball valve (14) is installed on the delivery pipe (15). A drain unit (4) is installed at the bottom of the solvent storage tank (5).

2. The online solvent recovery device for drying natamycin according to claim 1, characterized in that: The air intake unit (3) includes a switching valve (31), an air filter (32) and an air intake pipe (33). The air intake pipe (33) is connected and fixed on the duct (12). The switching valve (31) and the air filter (32) are both mounted on the air intake pipe (33).

3. The online solvent recovery device for drying natamycin according to claim 2, characterized in that: The air filter (32) has three sets of filter elements arranged in sequence on the inner side: coarse filter, fine filter and sterilization filter.

4. The online solvent recovery device for drying natamycin according to claim 1, characterized in that: It also includes a glass sight glass (9), which is mounted on a solvent storage tank (5).

5. An online solvent recovery device for drying natamycin according to claim 1, characterized in that: The draining unit (4) includes a magnetic pump (41) and a drain pipe (42). The magnetic pump (41) is installed at the bottom of the solvent storage tank (5) and is connected to the inside of the solvent storage tank (5). The drain pipe (42) is connected and fixed at the pump outlet of the magnetic pump (41).

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