Anti-foam MVR evaporator

Abstract

The utility model discloses an anti-foam MVR (Mechanical Vapor Recompression) evaporator, which belongs to the technical field of MVR evaporators and comprises an evaporation barrel, a barrel cover is mounted at the top of the evaporation barrel in a threaded manner, an air guide pipe is fixedly sleeved at the top of the barrel cover, a defoaming agent supply mechanism is arranged at the side part of the evaporation barrel, and two limiting slide rods are fixedly connected with an inner cavity of the evaporation barrel. The two limiting sliding rods are movably sleeved with sliding bases, and a floating plate is fixedly connected between the two sliding bases. According to the device, the limiting sliding rod, the sliding seat, the floating plate, the mounting frame and the foam sensor are matched for use, so that the floating plate floats at the top of liquid in the inner cavity of the evaporation barrel, the floating plate and the foam sensor move up and down along with the height of the liquid, and when foam is generated at the top of the liquid, a probe on the foam sensor can detect the foam in time; therefore, foam can be eliminated and cleaned in time.

Description

Technical Field

[0001] This utility model relates to the field of MVR evaporator technology, and more specifically, to an anti-foaming MVR evaporator. Background Technology

[0002] MVR evaporators are a new type of high-efficiency and energy-saving evaporation equipment mainly used in the pharmaceutical industry. This equipment uses low-temperature and low-pressure steam technology and clean energy to generate steam and separate water from the medium.

[0003] A search revealed that utility model patent CN219595869U discloses a defoaming device for an MVR evaporator. This device includes an MVR evaporator body, which comprises an inner flange for the evaporation chamber, a defoaming device flange, a perforated plate, a filter screen, a cylinder, a cone, an evaporation chamber, and a heating chamber. The MVR evaporator body is equipped with a foam sensing component, including a first foam sensor and a second foam sensor. The first foam sensor is located on the top of the MVR evaporator body, and the second foam sensor is located on the evaporation chamber. A foam supply mechanism is located on one side of the MVR evaporator body. This defoaming device for the MVR evaporator is simple to operate, enhances automatic functionality, saves time and manpower, improves functionality, and increases the contact area between the defoamer and the foam, thereby improving defoaming efficiency.

[0004] However, the aforementioned patents have the following shortcomings: defoaming can only be performed when foam sensors one and two detect foam, but the positions of foam sensors one and two are fixed, affecting the timeliness of foam removal; in addition, the nozzle sprays the defoamer into the evaporation chamber from the side, making it difficult to ensure the elimination of foam on the top surface at different liquid levels. Therefore, we propose a foam-proof MVR evaporator. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide an anti-foaming MVR evaporator.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An anti-foaming MVR evaporator includes an evaporation cylinder, a cylinder cover threaded onto the top of the evaporation cylinder, a gas guide tube fixedly sleeved onto the top of the cylinder cover, an antifoaming agent supply mechanism provided on the side of the evaporation cylinder, two limiting slide rods fixedly connected to the inner cavity of the evaporation cylinder, slide seats movably sleeved on the two limiting slide rods, a float plate fixedly connected between the two slide seats, a mounting bracket fixedly connected to the top surface of the float plate, two foam sensors fixedly mounted on the mounting bracket, the bottom ends of the two foam sensors extending below the top surface of the float plate, an upper limiting ring fixedly connected to the top of the limiting slide rod, and a lower limiting ring fixedly sleeved on the outer side of the limiting slide rod.

[0008] As a preferred embodiment of this utility model, the defoamer supply mechanism includes a liquid storage tank disposed on the side of the evaporation cylinder. A first liquid guiding pump is fixedly installed on the top surface of the liquid storage tank. The input end of the first liquid guiding pump extends into the inner cavity of the liquid storage tank and is fixedly connected to a suction pipe. The output end of the first liquid guiding pump is fixedly connected to a first liquid guiding pipe. The end of the first liquid guiding pipe is fixedly sleeved into the inner cavity of the cylinder cover and is fixedly connected to a liquid distribution ring box. The top surface of the liquid distribution ring box is connected to the top surface of the inner cavity of the cylinder cover. Multiple nozzles are fixedly installed on the bottom surface of the liquid distribution ring box.

[0009] As a preferred embodiment of this utility model, a servo motor is fixedly installed on the bottom surface of the liquid storage tank, the output shaft of the servo motor extends into the inner cavity of the liquid storage tank and is fixedly connected to a stirring shaft, and multiple stirring plates are fixedly connected to the side of the stirring shaft.

[0010] As a preferred embodiment of this utility model, a second liquid guiding pump is fixedly installed on the top surface of the liquid storage tank, the output end of the second liquid guiding pump extends into the inner cavity of the liquid storage tank, and the input end of the second liquid guiding pump is fixedly connected to a second liquid guiding pipe.

[0011] As a preferred embodiment of this utility model, an inlet pipe is fixedly sleeved on the side of the evaporation cylinder.

[0012] As a preferred embodiment of this utility model, a control panel is fixedly installed on the top surface of the liquid storage tank.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, by using the limit slide rod, slide seat, float plate, mounting bracket and foam sensor together, the float plate floats on the top of the liquid in the inner cavity of the evaporator, so that the float plate and foam sensor move up and down with the height of the liquid. When foam is generated at the top of the liquid, the probe on the foam sensor can detect it in time so that the foam can be eliminated and cleaned in time.

[0015] (2) In this utility model, by using the liquid storage tank, the first liquid pump, the first liquid pipe, the liquid distribution ring box, the nozzle and the suction pipe together, the first liquid pump draws the defoamer in the liquid storage tank into the liquid distribution ring box, and the multiple nozzles below the liquid distribution ring box spray the defoamer downwards, ensuring that the defoamer can smoothly contact the foam on the top surface of the liquid in the inner cavity of the evaporator, thereby ensuring the quality of foam elimination and not being affected by the liquid level in the evaporator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the evaporation cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the cylindrical cover of this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the liquid storage tank of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Evaporation cylinder; 2. Defoamer supply mechanism; 3. Cylinder cover; 4. Limiting slide bar; 5. Slide seat; 6. Float plate; 7. Mounting bracket; 8. Foam sensor; 9. Lower limit ring; 10. Upper limit ring; 11. Liquid storage tank; 12. First liquid guide pump; 13. First liquid guide pipe; 14. Liquid distribution ring box; 15. Nozzle; 16. Second liquid guide pump; 17. Second liquid guide pipe; 18. Control panel; 19. Servo motor; 20. Stirring shaft; 21. Stirring plate; 22. Suction pipe; 23. Liquid inlet pipe; 24. Gas guide pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-5 An anti-foaming MVR evaporator includes an evaporation cylinder 1, a cylinder cover 3 threadedly installed on the top of the evaporation cylinder 1, a gas guide pipe 24 fixedly sleeved on the top of the cylinder cover 3, an antifoaming agent supply mechanism 2 provided on the side of the evaporation cylinder 1, two limiting slide rods 4 fixedly connected to the inner cavity of the evaporation cylinder 1, slide seats 5 movably sleeved on the two limiting slide rods 4, a float plate 6 fixedly connected between the two slide seats 5, a mounting bracket 7 fixedly connected to the top surface of the float plate 6, two foam sensors 8 fixedly installed on the mounting bracket 7, the bottom ends of the two foam sensors 8 extending below the top surface of the float plate 6, an upper limiting ring 10 fixedly connected to the top of the limiting slide rod 4, and a lower limiting ring 9 fixedly sleeved on the outer side of the limiting slide rod 4.

[0028] For details, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The defoamer supply mechanism 2 includes a liquid storage tank 11 disposed on the side of the evaporation cylinder 1. A first liquid guide pump 12 is fixedly installed on the top surface of the liquid storage tank 11. The input end of the first liquid guide pump 12 extends into the inner cavity of the liquid storage tank 11 and is fixedly connected to a suction pipe 22. The output end of the first liquid guide pump 12 is fixedly connected to a first liquid guide pipe 13. The end of the first liquid guide pipe 13 is fixedly sleeved into the inner cavity of the cylinder cover 3 and is fixedly connected to a liquid distribution ring box 14. The top surface of the liquid distribution ring box 14 is connected to the top surface of the inner cavity of the cylinder cover 3. Multiple nozzles 15 are fixedly installed on the bottom surface of the liquid distribution ring box 14.

[0029] For details, please refer to Figure 5 A servo motor 19 is fixedly installed on the bottom surface of the liquid storage tank 11. The output shaft of the servo motor 19 extends into the inner cavity of the liquid storage tank 11 and is fixedly connected to an agitator 20. Multiple agitator plates 21 are fixedly connected to the side of the agitator 20.

[0030] In this embodiment, the servo motor 19 drives the stirring shaft 20 and the stirring plate 21 to rotate, and the stirring plate 21 stirs the defoamer to prevent it from settling.

[0031] For details, please refer to Figure 5 A second liquid guide pump 16 is fixedly installed on the top surface of the liquid storage tank 11. The output end of the second liquid guide pump 16 extends into the inner cavity of the liquid storage tank 11, and the input end of the second liquid guide pump 16 is fixedly connected to a second liquid guide pipe 17.

[0032] In this embodiment, external defoamer is introduced into the inner cavity of the storage tank 11 through the second liquid pump 16 and the second liquid pipe 17, so as to add defoamer to the storage tank 11.

[0033] For details, please refer to Figure 1 An inlet pipe 23 is fixedly sleeved on the side of the evaporator 1.

[0034] In this embodiment, the liquid to be evaporated is introduced into the inner cavity of the evaporation cylinder 1 through the liquid inlet pipe 23.

[0035] For details, please refer to Figure 1 and Figure 5 A control panel 18 is fixedly installed on the top surface of the liquid storage tank 11.

[0036] In this embodiment, the second liquid pump 16, the servo motor 19 and the first liquid pump 12 are controlled by the control panel 18, and the information detected by the foam sensor 8 is processed by the control panel 18.

[0037] Working principle: In use, the liquid is first evaporated using the evaporator 1, while the liquid to be evaporated supports the float 6, placing the float 6 at the top of the liquid. The height of the foam sensor 8 is automatically adjusted according to the depth of the liquid in the evaporator 1. When foam is generated at the top of the liquid in the evaporator 1, the foam sensor 8 detects the presence of foam and transmits the signal to the control panel 18. Finally, the control panel 18 controls the first liquid pump 12 to operate. The first liquid pump 12 uses the suction pipe 22 to extract the defoamer from the storage tank 11. The suction pipe 22 and the first liquid guide pipe 13 guide the defoamer into the inner cavity of the liquid distribution ring tank 14, and the defoamer is sprayed out from the nozzle 15 below the liquid distribution ring tank 14. The sprayed defoamer eliminates the foam at the top of the liquid in the inner cavity of the evaporator 1.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A foam-resistant MVR evaporator, comprising an evaporation cylinder (1), characterized in that: The top of the evaporator (1) is threaded with a cylinder cover (3), and a gas guide pipe (24) is fixedly sleeved on the top of the cylinder cover (3). A defoamer supply mechanism (2) is provided on the side of the evaporator (1). Two limiting slide rods (4) are fixedly connected to the inner cavity of the evaporator (1). Slide seats (5) are movably sleeved on the two limiting slide rods (4). A float plate (6) is fixedly connected between the two slide seats (5). A mounting bracket (7) is fixedly connected to the top surface of the float plate (6). Two foam sensors (8) are fixedly installed on the mounting bracket (7). The bottom ends of the two foam sensors (8) extend to the bottom of the top surface of the float plate (6). An upper limiting ring (10) is fixedly connected to the top of the limiting slide rod (4). A lower limiting ring (9) is fixedly sleeved on the outer side of the limiting slide rod (4).

2. The anti-foaming MVR evaporator according to claim 1, characterized in that: The defoamer supply mechanism (2) includes a liquid storage tank (11) located on the side of the evaporation cylinder (1). A first liquid guide pump (12) is fixedly installed on the top surface of the liquid storage tank (11). The input end of the first liquid guide pump (12) extends into the inner cavity of the liquid storage tank (11) and is fixedly connected to a suction pipe (22). The output end of the first liquid guide pump (12) is fixedly connected to a first liquid guide pipe (13). The end of the first liquid guide pipe (13) is fixedly sleeved into the inner cavity of the cylinder cover (3) and is fixedly connected to a liquid distribution ring box (14). The top surface of the liquid distribution ring box (14) is connected to the top surface of the inner cavity of the cylinder cover (3). A plurality of nozzles (15) are fixedly installed on the bottom surface of the liquid distribution ring box (14).

3. The anti-foaming MVR evaporator according to claim 2, characterized in that: A servo motor (19) is fixedly installed on the bottom surface of the liquid storage tank (11). The output shaft of the servo motor (19) extends into the inner cavity of the liquid storage tank (11) and is fixedly connected to a stirring shaft (20). Multiple stirring plates (21) are fixedly connected to the side of the stirring shaft (20).

4. The anti-foaming MVR evaporator according to claim 2, characterized in that: A second liquid guide pump (16) is fixedly installed on the top surface of the liquid storage tank (11). The output end of the second liquid guide pump (16) extends into the inner cavity of the liquid storage tank (11), and the input end of the second liquid guide pump (16) is fixedly connected to a second liquid guide pipe (17).

5. The anti-foaming MVR evaporator according to claim 1, characterized in that: The side of the evaporator (1) is fixedly fitted with an inlet pipe (23).

6. The anti-foaming MVR evaporator according to claim 2, characterized in that: A control panel (18) is fixedly installed on the top surface of the liquid storage tank (11).

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