Vacuum pump tail gas treatment device of vacuum drying box

Abstract

The utility model relates to the technical field of vacuum drying ovens and discloses a vacuum pump tail gas treatment device of a vacuum drying oven. The vacuum pump tail gas treatment device comprises an air inlet pipe, a vacuum pump, a communicating pipe, a collecting tank and an exhaust pipe, a liquid space and a gas space which are arranged up and down are arranged in the collecting tank, the liquid space is used for accommodating liquid capable of reacting with tail gas, and a gas outlet of the collecting tank is communicated with the gas space; one end of the gas inlet pipe is used for vacuum-dried gas, the other end of the gas inlet pipe is connected to a gas inlet of the vacuum pump, a gas outlet of the vacuum pump is connected to one end of the communicating pipe, the other end of the communicating pipe is connected to a liquid space of the collecting tank, a gas outlet of the collecting tank is connected to one end of the exhaust pipe, and the other end of the exhaust pipe is used for exhausting tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying boxes, in particular to a vacuum pump tail gas treatment device of a vacuum drying box. Background Art

[0002] Vacuum drying ovens are designed specifically for drying heat-sensitive, easily decomposable, and easily oxidized materials. They can be filled with inert gas, allowing for rapid drying of items with complex compositions. Compared to conventional drying methods, they offer faster drying times, less pollution, and no damage to the inherent properties of the items being dried. Therefore, vacuum drying ovens are widely used in industries such as medicine, food, chemicals, and electronics.

[0003] Currently, vacuum drying ovens typically consist of a vacuum chamber, a material transfer tray, a vacuum extraction system, a heating system, and a supporting vacuum pump. However, the vacuum pumps used in mainstream vacuum drying ovens on the market are often rotary vane vacuum pumps, whose exhaust gases are discharged directly from the chamber. However, in the pharmaceutical and chemical industries, the materials being dried are often chemicals, and the gases extracted from these chambers may contain toxic components. Directly discharging these gases into the atmosphere without treatment could pose a risk of harm. Therefore, when drying these materials, a vacuum pump exhaust gas treatment system is necessary. Utility Model Content

[0004] The purpose of the utility model is to treat the tail gas of the chemical after it is discharged because the gas sucked out by vacuum has certain toxicity when the chemical is dried.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a vacuum pump tail gas treatment device for a vacuum drying box, comprising: an air inlet pipe, a vacuum pump, a connecting pipe, a collecting tank and an exhaust pipe;

[0006] The collecting tank is provided with a liquid space and a gas space arranged vertically. The liquid space is used to accommodate liquid that can react with the exhaust gas. The gas outlet of the collecting tank is connected to the gas space.

[0007] One end of the air inlet pipe is used for vacuum-dried gas, and the other end of the air inlet pipe is connected to the air inlet of the vacuum pump. The air outlet of the vacuum pump is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the liquid space of the collecting tank. The air outlet of the collecting tank is connected to one end of the exhaust pipe, and the other end of the exhaust pipe is used to discharge exhaust gas.

[0008] Furthermore, it also includes a drain pipe, the drain port of the collection tank is connected to the liquid space, the drain port of the collection tank is connected to one end of the drain pipe, and the other end of the drain pipe is used for draining liquid.

[0009] Furthermore, a first valve is installed on the liquid discharge pipe.

[0010] Furthermore, a second valve is installed on the air intake pipe.

[0011] Furthermore, a third valve is installed on the connecting pipe.

[0012] Furthermore, the liquid placed in the liquid space is water.

[0013] Compared with the prior art, the vacuum pump exhaust gas treatment device of the vacuum drying box in the embodiment of the present utility model has the following beneficial effects: when the vacuum drying box performs suction operation, the vacuum pump is turned on, and the gas in the vacuum drying box enters the vacuum pump from the air inlet pipe, and the exhaust gas discharged by the vacuum pump enters the liquid space of the collection tank from the connecting pipe. Since the liquid space contains liquid that can absorb toxic gases in the exhaust gas, the harmful substances in the exhaust gas are effectively absorbed, and the toxic substances in the exhaust gas are filtered and then discharged from the exhaust pipe, which significantly reduces the emission of pollutants in the exhaust gas and plays a positive role in environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an embodiment of the present utility model.

[0015] In the figure, 1, air inlet pipe; 2, vacuum pump; 3, connecting pipe; 4, collecting tank; 41, liquid space; 42, gas space; 5, exhaust pipe; 6, drain pipe; 7, first valve; 8, second valve; 9, third valve. DETAILED DESCRIPTION

[0016] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and 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 cannot be understood as a limitation on the present invention.

[0018] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 As shown, a tail gas treatment device of a vacuum pump 2 of a vacuum drying box in a preferred embodiment of the present invention comprises: an air inlet pipe 1, a vacuum pump 2, a connecting pipe 3, a collecting tank 4, a drain pipe 6 and an exhaust pipe 5; a liquid space 41 and a gas space 42 are arranged in an upper and lower manner in the collecting tank 4, the liquid space 41 is used to accommodate a liquid that can react with the tail gas, and the gas outlet of the collecting tank 4 is connected to the gas space 42; one end of the air inlet pipe 1 is used for vacuum drying gas, and the other end of the air inlet pipe 1 is connected to the air inlet of the vacuum pump 2, and the vacuum pump 2 The air outlet is connected to one end of the connecting pipe 3, the other end of the connecting pipe 3 is connected to the liquid space 41 of the collecting tank 4, the air outlet of the collecting tank 4 is connected to one end of the exhaust pipe 5, the other end of the exhaust pipe 5 is used to discharge the exhaust gas, the drain port of the collecting tank 4 is connected to the liquid space 41, the drain port of the collecting tank 4 is connected to one end of the drain pipe 6, the other end of the drain pipe 6 is used for draining, a first valve 7 is installed on the drain pipe 6, a second valve 8 is installed on the air inlet pipe 1, and a third valve 9 is installed on the connecting pipe 3. The liquid placed in the liquid space 41 is water.

[0020] Based on the above scheme, the operating process of the present invention is as follows: when the vacuum drying chamber is performing a suction operation, the second valve 8, vacuum pump 2, and third valve 9 are opened, and the gas inside the vacuum drying chamber enters the vacuum pump 2 through the air inlet pipe 1. The exhaust gas discharged from the vacuum pump 2 enters the liquid space 41 of the collection tank 4 through the connecting pipe 3. Since the liquid space 41 contains a liquid that reacts with the exhaust gas, preferably water in this embodiment, and the toxic substances are water-soluble gases, the water can effectively absorb harmful substances in the exhaust gas, filter out the toxic substances in the exhaust gas, and then discharge them through the exhaust pipe 5. When the water in the liquid space 41 needs to be replaced, the first valve 7 is opened to empty the water in the liquid space 41. When the liquid space 41 needs to be replenished with new liquid, the liquid storage tank is inverted, the first valve 7 is opened, and new liquid is injected. After that, the first valve 7 is closed and the liquid storage tank is reset. This embodiment significantly reduces the emission of pollutants in the exhaust gas, playing a positive role in environmental protection. In addition, the first valve 7, the second valve 8, and the third valve 9 are manually controlled valves, which are simple to control, simple in structure, and low in cost.

[0021] In summary, the embodiment of the present invention provides a tail gas treatment device for the vacuum pump 2 of a vacuum drying box, which absorbs and treats the tail gas through the liquid in the collection tank 4, reducing the risk of harmful substances being directly discharged into the environment, thereby protecting the health of the operator and the safety of the surrounding environment. The device can ensure that the tail gas meets environmental protection standards before being discharged, helping enterprises to comply with relevant environmental protection laws and regulations and avoid penalties for illegal emissions. Since the water in the liquid space 41 can be emptied through the first valve 7, and the water is easy to handle and stable, the maintenance cost of the device is relatively low, reducing the operating costs of the enterprise. The liquid space 41 of the device can accommodate different tail gas components by placing different liquids, providing good flexibility and adaptability. The design of the various valves and connecting pipes 3 in the device makes the monitoring and control of the entire system simple, which is convenient for operators to manage and adjust.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum pump tail gas treatment device for a vacuum drying oven, characterized in that: include: Inlet pipe, vacuum pump, connecting pipe, collecting tank and exhaust pipe; The collecting tank is provided with a liquid space and a gas space arranged vertically, the liquid space is used to accommodate a liquid capable of absorbing toxic gases in the exhaust gas, and the gas outlet of the collecting tank is connected to the gas space; One end of the air inlet pipe is used for vacuum-dried gas, the other end of the air inlet pipe is connected to the air inlet of the vacuum pump, the air outlet of the vacuum pump is connected to one end of the connecting pipe, the other end of the connecting pipe is connected to the liquid space of the collecting tank, the air outlet of the collecting tank is connected to one end of the exhaust pipe, and the other end of the exhaust pipe is used to discharge exhaust gas.

2. The vacuum pump tail gas treatment device of the vacuum drying box according to claim 1, characterized in that: It also includes a drain pipe, the drain port of the collection tank is connected to the liquid space, the drain port of the collection tank is connected to one end of the drain pipe, and the other end of the drain pipe is used for draining liquid.

3. The vacuum pump tail gas treatment device of the vacuum drying box according to claim 2, characterized in that: A first valve is installed on the liquid discharge pipe.

4. The vacuum pump tail gas treatment device of the vacuum drying box according to claim 1, characterized in that: A second valve is installed on the air intake pipe.

5. The vacuum pump tail gas treatment device of the vacuum drying box according to claim 1, characterized in that: A third valve is installed on the connecting pipe.

6. The vacuum pump tail gas treatment device of the vacuum drying box according to claim 1, characterized in that: The liquid placed in the liquid space is water.

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