Miniature vacuum evaporation drying equipment

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to miniature vacuum evaporation drying equipment which comprises a machine body, and a distillation still used for evaporating waste liquid into gas and a heat energy exchange device connected to the distillation still and used for condensing steam into distilled water are integrated in the machine body. The outer side of the machine body is further provided with a collecting mechanism communicated with the heat energy exchange device and used for collecting distilled water formed by steam condensation, the machine body is provided with a liquid inlet pipeline communicated with the distillation still and used for introducing waste liquid into the distillation still, and the machine body is further provided with a negative pressure device connected with the distillation still; the pressure reduction device is used for reducing pressure in the distillation kettle to evaporate waste liquid at low temperature. According to the utility model, low-temperature and high-efficiency waste liquid evaporation is realized, distilled water can be collected, and energy consumption can be reduced; waste liquid is pretreated through the filtering mechanism, so that internal parts can be prevented from being damaged by sediments.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field especially relates to a micro vacuum evaporating equipment. BACKGROUND

[0002] With the development of science and technology and the improvement of environmental protection consciousness, the demand for safe and efficient treatment of experimental waste liquid and small industrial wastewater is increasing. Traditional waste liquid treatment methods usually rely on high-temperature evaporation or other complex processes. These methods not only have high energy consumption, but also are prone to secondary pollution during the treatment process, which is difficult to meet the requirements of modern laboratories and small enterprises for rapid, low-cost and environmentally friendly treatment. SUMMARY

[0003] In order to solve the problems in the above background art, the utility model provides a micro vacuum evaporating equipment.

[0004] The utility model solves the technical problem and adopts the scheme: a micro vacuum evaporating equipment, including the body, the body is integrated with the retort for evaporating waste liquid into gaseous state and the heat exchange device connected to the retort for condensing steam into distilled water, the body outside is also provided with the collecting mechanism communicated with the heat exchange device, for collecting the distilled water formed by steam condensation, the body has the liquid inlet pipeline communicated with the retort for introducing waste liquid into the retort, and also has the negative pressure device connected with the retort, for reducing the pressure in the retort, so that waste liquid is evaporated at low temperature.

[0005] By adopting the above technical scheme, the negative pressure device is used to reduce the pressure in the retort, so that the boiling point of the waste liquid is reduced, and the waste liquid can be evaporated at a lower temperature. At the same time, the heat exchange device is used to condense the steam into distilled water.

[0006] Further, the liquid inlet pipeline is provided with a filtering mechanism for pretreating the waste liquid, and the filtering mechanism comprises a filtering base shell and a filter core arranged in the filtering base shell.

[0007] By adopting the above technical scheme, the large particle impurities, suspended solids and other substances in the waste liquid can be removed, reducing the abrasion and corrosion of these substances to the heating surface or other components after entering the retort.

[0008] Further, the filtering base shell comprises a first filtering shell and a second filtering shell, adjacent side ends of the first filtering shell and the second filtering shell jointly form a filtering cavity for accommodating the filter core, and a first connecting flange is formed on the outer edge of the first filtering shell, a second connecting flange is formed on the outer edge of the second filtering shell, and the first connecting flange and the second connecting flange are connected by fasteners to seal the filtering cavity.

[0009] Through the above technical scheme, the split filter base shell design can facilitate the disassembly and replacement of the filter core.

[0010] Further, the top of the body has an opening for exposing the top end of the distillation kettle, the negative pressure device includes a vacuum pump arranged at the top end of the distillation kettle and a vacuum gauge for detecting the pressure inside the distillation kettle.

[0011] Through the above technical scheme, the vacuum gauge cooperates with the vacuum pump to achieve the appropriate negative pressure state inside the distillation kettle.

[0012] Further, the collecting mechanism is a distilled water cup communicated with the heat energy exchange device through a pipeline, the bottom of the distilled water cup is provided with a drain valve, and the outer wall of the body is further fixed with a support frame for supporting the distilled water cup.

[0013] Further, the outer wall of the body is provided with a liquid discharge port for discharging the concentrated liquid and an injection port for inputting the defoaming agent, and the liquid discharge port and the injection port are both communicated with the distillation kettle.

[0014] Through the above technical scheme, the injection port can inject an appropriate amount of defoaming agent into the distillation kettle, and the liquid discharge port can discharge the concentrated liquid generated by the non-volatile substances inside the kettle.

[0015] In summary, the beneficial effects of the present application are:

[0016] 1. By arranging the negative pressure device inside the body, the pressure in the distillation kettle can be reduced, the boiling point of the waste liquid is lowered, and evaporation can be achieved at a lower temperature. At the same time, the heat energy exchange device is used to condense the steam into distilled water, completing the treatment of the waste liquid. The collecting mechanism can collect distilled water for recycling.

[0017] 2. By additionally arranging the filtering mechanism in the liquid inlet pipeline, the large particle impurities, suspended solids and the like in the waste liquid can be removed, reducing the abrasion and corrosion caused by these substances to the heating surface or other components after entering the distillation kettle. The filtering mechanism composed of the first filter shell, the second filter shell, the filter core and the first and second connecting flanges facilitates the disassembly of the filter base shell and the replacement and maintenance of the internal filter core.

[0018] 3. By arranging the liquid discharge port and the injection port on the body, the injection port can inject an appropriate amount of defoaming agent into the distillation kettle to avoid the entrainment of steam. The liquid discharge port can discharge the concentrated liquid generated by the non-volatile substances inside the kettle to avoid affecting the evaporation efficiency.

[0019] The liquid discharge port can discharge the concentrated liquid generated by the non-volatile substances inside the kettle.

[0020] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present embodiment;

[0022] Figure 2 It is an internal schematic diagram of the present embodiment;

[0023] Figure 3 It is a partial enlarged schematic diagram of the filtering mechanism of the present embodiment.

[0024] In the figure: 1, machine body; 11, opening; 12, injection port; 13, liquid discharge port; 2, distillation kettle; 3, heat energy exchange device; 4, collection mechanism; 41, distilled water cup; 42, drain valve; 43, support frame; 5, liquid inlet pipeline; 6, negative pressure device; 61, vacuum pump; 62, vacuum gauge; 7, filtering mechanism; 71, filtering base shell; 711, first filtering shell; 712, second filtering shell; 713, filtering cavity; 714, first connecting flange; 715, second connecting flange; 72, filter core. DETAILED DESCRIPTION

[0025] In order to make the content of the present application more easily and clearly understood, the present application is further described below according to specific embodiments and in conjunction with the drawings.

[0026] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. Unless otherwise stated, the meaning of "a plurality of" is two or more.

[0027] Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0028] AsFigures 1 to 3 As shown, a miniature vacuum evaporation device includes a body 1. In this embodiment, the body 1 integrates a distillation vessel 2 for evaporating waste liquid into a gaseous state and a heat exchange device 3 connected to the distillation vessel 2 for condensing the steam into distilled water. The outside of the body 1 is also provided with a collection mechanism 4 connected to the heat exchange device 3 for collecting the distilled water formed by steam condensation. The body 1 has an inlet pipe 5 connected to the distillation vessel 2 for introducing waste liquid into the distillation vessel 2, and a negative pressure device 6 connected to the distillation vessel 2 for reducing the pressure inside the distillation vessel 2 so that the waste liquid evaporates at a low temperature.

[0029] The body 1 of this embodiment has an internal mounting cavity, within which a distillation vessel 2 is installed. An inlet pipe 5, connected to the distillation vessel 2, extends to the outside of the body 1 and is equipped with an inlet assembly. This assembly controls the speed and amount of waste liquid entering the distillation vessel 2, ensuring a stable evaporation process. A pressure-drafting hole is located at the top of the distillation vessel 2. A negative pressure device 6, connected to the inside of the distillation vessel 2, is installed through this hole. Simultaneously with automatic liquid intake, a vacuum is created in the distillation vessel 2, lowering the internal negative pressure to -0.0933 to -0.0996 MPa. At this pressure, only 30 degrees Celsius is needed to evaporate the waste liquid inside the distillation vessel 2, significantly improving waste liquid treatment efficiency. The waste liquid is converted from a liquid to a gaseous state, while non-volatile substances remain at the bottom of the vessel. Furthermore, a heat exchange device 3 is integrated within the mounting cavity of the body 1. In this embodiment, it is a condensation device connected to the top of the distillation vessel 2, which can convert the gaseous state into a liquid state to form distilled water. Then, its end is connected to the collection mechanism 4 outside the body 1 through a pipe. A micro pump installed on the pipe can automatically transport the condensed distilled water into the collection mechanism 4 to complete the treatment of waste liquid, significantly reduce the pollution caused by the direct discharge of experimental wastewater, and collect and reuse the condensate.

[0030] like Figure 1 and Figure 3 As shown, the inlet pipe 5 of this embodiment is equipped with a filter mechanism 7 for pre-treating waste liquid. The filter mechanism 7 includes a filter housing 71 and a filter element 72 disposed inside the filter housing 71. Specifically, the filter mechanism 7 is provided in the flow path of the inlet pipe 5, which includes a filter housing 71 and a filter element 72 disposed inside the housing. When the waste liquid flows through the filter element 72, its internal structure (such as fiber web, porous material, etc.) can trap larger particles in the waste liquid, and smaller particles can be adsorbed into the filter layer to remove large particulate impurities and suspended solids in the waste liquid, thereby reducing the wear and corrosion caused by these substances to the heating surface or other components after entering the distillation kettle 2.

[0031] like Figure 3As shown, the filter housing 71 in this embodiment includes a first filter housing 711 and a second filter housing 712. The adjacent sides of the first filter housing 711 and the second filter housing 712 together form a filter cavity 713 for accommodating the filter element 72. A first connecting flange 714 is formed on the outer edge of the first filter housing 711, and a second connecting flange 715 is formed on the outer edge of the second filter housing 712. The first connecting flange 714 and the second connecting flange 715 are connected by fasteners to seal the filter cavity 713. Specifically, the filter housing in this embodiment is composed of a first filter housing 711 and a second filter housing 712. The opposite sides of both are integrally formed with the liquid inlet pipe 5, and cavities are formed on the adjacent sides of both. The two cavities constitute a filter cavity 713 adapted to the size of the filter element 72. Connecting flanges are provided on the outer edges of the adjacent sides of both, and sealing elements such as rubber gaskets are provided between the flanges. Mechanical connection can be achieved by fasteners such as bolts.

[0032] like Figure 1 As shown, the top of the body 1 in this embodiment has an opening 11 for exposing the top of the distillation vessel 2. The negative pressure device 6 includes a vacuum pump 61 located at the top of the distillation vessel 2 and a vacuum gauge 62 for detecting the internal pressure of the distillation vessel 2. The vacuum pump 61 can reduce the pressure inside the distillation vessel 2, bringing it into a negative pressure state, thereby lowering the boiling point of the waste liquid. The vacuum gauge 62 monitors the pressure changes inside the distillation vessel 2 in real time, ensuring that the set negative pressure conditions are maintained throughout the operation. The opening 11 on the top of the body 1 allows the top of the distillation vessel 2 to be exposed, facilitating the installation and observation of the vacuum gauge 62.

[0033] like Figure 1 As shown, the collection mechanism 4 in this embodiment is a distilled water cup 41 connected to the heat exchange device 3 via a pipe. A drain valve 42 is provided at the bottom of the distilled water cup 41, and a support frame 43 for accommodating and supporting the distilled water cup 41 is fixed to the outer wall of the machine body 1. Specifically, distilled water is directly introduced into the distilled water cup 41 from the heat exchange device 3 via a pipe, ensuring that the condensed distilled water can be collected quickly and safely. Placing the distilled water cup 41 on the support frame 43 outside the machine body 1 not only saves internal space and facilitates machine integration, but also allows for disassembly and cleaning by removing the pipe from the support frame 43 when cleaning is required.

[0034] like Figure 1As shown, the outer wall of the body 1 in this embodiment is provided with a drain port 13 for discharging concentrated liquid and an injection port 12 for inputting defoamer. Both the drain port 13 and the injection port 12 are connected to the distillation vessel 2. During the evaporation process, non-volatile substances gradually concentrate and deposit at the bottom of the distillation vessel 2. By providing a drain port with a drain valve 42, these concentrates can be discharged periodically or continuously, thereby preventing excessive accumulation that could affect evaporation efficiency and equipment performance. Considering that a large amount of foam is easily generated during the evaporation process, especially when treating waste liquid containing organic matter or surfactants, this not only occupies the effective space of the distillation vessel 2 but may also lead to steam entrainment, affecting distillation effect and product quality, the equipment is provided with an injection port 12 to allow the timely injection of an appropriate amount of defoamer to effectively suppress foam formation and ensure a smooth and efficient evaporation process.

[0035] In summary, the beneficial effects of this embodiment are as follows: By integrating functions such as waste liquid evaporation, steam condensation, negative pressure extraction, and distilled water collection into a compact body 1, this embodiment reduces the space occupied by the body 1, making it suitable for use in experimental settings. Furthermore, by using the negative pressure device 6 to maintain a negative pressure of -0.0933 to -0.0996 MPa within the distillation vessel 2, waste liquid can be evaporated at just 30 degrees Celsius, significantly improving waste liquid treatment efficiency and reducing energy consumption. Simultaneously, a filter mechanism 7 is installed at the inlet pipe 5 to prevent large particulate impurities and suspended solids in the waste liquid from entering the distillation vessel 2 and causing wear and corrosion to the heating surface or other components. Finally, the steam is converted into liquid water by the condensation device, and the distilled water is transported to the collection mechanism 4 through a pipeline collection device, completing the waste liquid treatment. This effectively reduces pollution caused by direct discharge of experimental wastewater and enables the collection and reuse of condensate.

[0036] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A miniature vacuum drying device, comprising a body, characterized in that, The machine body integrates a distillation vessel for evaporating waste liquid into a gaseous state and a heat exchange device connected to the distillation vessel for condensing the steam into distilled water. The outside of the machine body is also provided with a collection mechanism connected to the heat exchange device for collecting the distilled water formed by steam condensation. The machine body has a liquid inlet pipe connected to the distillation vessel for introducing waste liquid into the distillation vessel, and also has a negative pressure device connected to the distillation vessel for reducing the pressure inside the distillation vessel so that the waste liquid evaporates at a low temperature.

2. The miniature vacuum drying equipment according to claim 1, characterized in that, The inlet pipe is equipped with a filtration mechanism for pre-treating waste liquid. The filtration mechanism includes a filter housing and a filter element disposed inside the filter housing.

3. The miniature vacuum drying equipment according to claim 2, characterized in that, The filter housing includes a first filter housing and a second filter housing. The adjacent sides of the first filter housing and the second filter housing together form a filter cavity for accommodating the filter element. A first connecting flange is formed on the outer edge of the first filter housing, and a second connecting flange is formed on the outer edge of the second filter housing. The first connecting flange and the second connecting flange are connected by fasteners to seal the filter cavity.

4. The miniature vacuum drying equipment according to claim 1, characterized in that, The top of the machine body has an opening for exposing the top of the distillation vessel, and the negative pressure device includes a vacuum pump located at the top of the distillation vessel and a vacuum gauge for detecting the internal pressure of the distillation vessel.

5. A miniature vacuum drying device according to claim 1, characterized in that, The collection mechanism is a distilled water cup connected to the heat exchange device via a pipe. The bottom of the distilled water cup is equipped with a drain valve, and a support frame for accommodating and supporting the distilled water cup is also fixed on the outer wall of the machine body.

6. The miniature vacuum drying equipment according to claim 1, characterized in that, The outer wall of the machine body is provided with a drain port for discharging concentrated liquid and an injection port for inputting defoamer, both of which are connected to the distillation kettle.

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