MVR evaporator defoaming device

Abstract

The utility model discloses a defoaming device for an MVR (mechanical vapor recompression) evaporator, which belongs to the technical field of MVR evaporators and comprises an evaporator, a return pipe and a circulating pipe, the return pipe is fixedly connected to the side surface of the evaporator, the circulating pipe is fixedly connected to the side surface of the evaporator, a liquid inlet pipe is fixedly connected to the side surface of the evaporator, and a tank body is arranged at the upper end of the evaporator. The defoaming device for the MVR evaporator has the beneficial effects that by arranging the defoaming mechanism, when the evaporator evaporates liquid in the evaporator, due to the fact that the liquid is introduced through multiple times of circulation of the circulating pipe and the backflow pipe in the liquid evaporation process, the liquid in the evaporator easily generates foams during evaporation, and after the foams in the evaporator are generated, the foams in the evaporator can be effectively removed. People control the forward and reverse motor to operate through an external switch, so that the rotating shaft can drive the stirring rod to rotate, and in the rotating process of the stirring rod, the needles arranged on the surface of the stirring rod can crush foam generated by liquid in the evaporator, so that the foam is prevented from penetrating through the filter plate.

Description

Technical Field

[0001] This utility model relates to the field of MVR evaporator technology, and more specifically, to an MVR evaporator defoaming device. 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, separating water from the medium. Unlike ordinary single-effect or multi-effect falling film evaporators, MVR evaporators are single-unit evaporators that integrate the functions of multi-effect falling film evaporators. They adopt segmented evaporation according to different product concentrations. Due to raw material issues, a lot of foam is generated in the secondary steam, which fills the entire separation chamber. The steam carries the foam into the compressor, causing frequent problems with the secondary compressor. To solve the above problems, we have introduced the following device. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an MVR evaporator defoaming device, which has the feature of facilitating the defoaming of the evaporator.

[0005] (2) Technical solution

[0006] To achieve the above objectives, this utility model provides a defoaming device for an MVR evaporator, comprising an evaporator, a return pipe, and a circulation pipe. The return pipe is fixedly connected to the side of the evaporator, and the circulation pipe is fixedly connected to the side of the evaporator. An inlet pipe is fixedly connected to the side of the evaporator. A tank is provided at the upper end of the evaporator, and a steam pipe is fixedly connected to the upper surface of the tank. A defoaming mechanism is provided inside the tank, and the defoaming mechanism includes a support frame, which is fixedly connected to the upper surface of the tank. A forward and reverse motor is fixedly connected inside the support frame, and a rotating shaft is fixedly connected to the lower end of the output shaft of the forward and reverse motor. A first bearing passes through the surface of the tank, and the rotating shaft passes through the first bearing. A filter plate is fixedly connected inside the tank, and a second bearing passes through the surface of the filter plate. The rotating shaft passes through the second bearing, and a stirring rod is fixedly connected to the surface of the rotating shaft. There are two sets of stirring rods, symmetrically arranged on the surface of the rotating shaft. Multiple needles are provided on the surface of the stirring rods, symmetrically arranged on the surface of the stirring rods.

[0007] When using the MVR evaporator defoaming device of this technical solution, by setting up a defoaming mechanism, when the evaporator evaporates the liquid inside, due to the multiple circulation of the liquid through the circulation pipe and return pipe during evaporation, foam is easily generated in the liquid inside the evaporator during evaporation. After the foam is generated inside the evaporator, the forward and reverse motors are operated by an external switch, so that the rotating shaft drives the stirring rod to rotate. During the rotation of the stirring rod, the needles set on the surface of the stirring rod break the foam generated by the liquid inside the evaporator, thereby preventing the foam from passing through the filter plate and improving the practicality of the device.

[0008] Furthermore, a first connecting ring is fixedly connected to the surface of the evaporator, and a second connecting ring is fixedly connected to the surface of the tank. A fastening bolt passes through the surface of the first connecting ring, and the first connecting ring and the second connecting ring are fixedly connected by the fastening bolt. There are multiple fastening bolts, which are symmetrically arranged on the surface of the first connecting ring.

[0009] Furthermore, a connecting pipe is fixedly connected to the lower surface of the evaporator.

[0010] (3) Beneficial effects

[0011] In summary, this utility model has the following beneficial effects:

[0012] 1. This MVR evaporator defoaming device, by setting up a defoaming mechanism, when the evaporator evaporates the liquid inside, due to the multiple circulation of the liquid through the circulation pipe and return pipe during the evaporation process, foam is easily generated in the liquid inside the evaporator during evaporation. After the foam is generated inside the evaporator, the forward and reverse motors are operated by an external switch, so that the rotating shaft drives the stirring rod to rotate. During the rotation of the stirring rod, the needles set on the surface of the stirring rod can break the foam generated in the liquid inside the evaporator, thereby preventing the foam from passing through the filter plate and improving the practicality of the device.

[0013] 2. This MVR evaporator defoaming device, by setting fastening bolts and a tank, allows people to simply unscrew the fastening bolts when they need to clean the filter plates and stirring rods, so that the tank containing the defoaming mechanism can be removed, making it convenient for people to clean the filter plates and stirring rods. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view;

[0016] Figure 2 This is a three-dimensional enlarged structural diagram of the defoaming mechanism in this utility model.

[0017] The labels in the attached diagram are:

[0018] 1. Evaporator; 2. Return pipe; 3. Circulation pipe; 4. Tank body; 5. First connecting ring; 6. Second connecting ring; 7. Fastening bolt; 8. Steam pipe; 9. Defoaming mechanism; 901. Support frame; 902. Forward and reverse motor; 903. Rotating shaft; 904. First bearing; 905. Filter plate; 906. Second bearing; 907. Stirring rod; 908. Needle; 10. Connecting pipe; 11. Liquid inlet pipe. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0020] Example:

[0021] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0022] Please see Figure 1-2 This utility model provides a technical solution: an MVR evaporator defoaming device, including an evaporator 1, a return pipe 2, and a circulation pipe 3. The return pipe 2 is fixedly connected to the side of the evaporator 1, and the circulation pipe 3 is fixedly connected to the side of the evaporator 1. An inlet pipe 11 is fixedly connected to the side of the evaporator 1. A tank 4 is provided at the upper end of the evaporator 1. A steam pipe 8 is fixedly connected to the upper surface of the tank 4. A defoaming mechanism 9 is provided inside the tank 4. The defoaming mechanism 9 includes a support frame 901, which is fixedly connected to the upper surface of the tank 4. A forward and reverse motor 902 is fixedly connected inside the support frame 901. A rotating shaft 903 is fixedly connected to the lower end of the output shaft of the machine 902. A first bearing 904 passes through the surface of the tank body 4, and the rotating shaft 903 passes through the first bearing 904. A filter plate 905 is fixedly connected inside the tank body 4. A second bearing 906 passes through the surface of the filter plate 905, and the rotating shaft 903 passes through the second bearing 906. A stirring rod 907 is fixedly connected to the surface of the rotating shaft 903. There are two sets of stirring rods 907, which are symmetrically arranged on the surface of the rotating shaft 903. A number of needles 908 are provided on the surface of the stirring rod 907, which are symmetrically arranged on the surface of the stirring rod 907.

[0023] By adopting the above technical solution, this MVR evaporator defoaming device, through the setting of the defoaming mechanism 9, when the evaporator 1 evaporates the liquid inside, due to the multiple circulation of the liquid through the circulation pipe 3 and the return pipe 2 during the evaporation, foam is easily generated in the liquid inside the evaporator 1 during evaporation. After the foam is generated inside the evaporator 1, the forward and reverse motor 902 is operated by an external switch, so that the rotating shaft 903 drives the stirring rod 907 to rotate. During the rotation of the stirring rod 907, the needles 908 set on the surface of the stirring rod 907 can break the foam generated in the liquid inside the evaporator 1, thereby preventing the foam from passing through the filter plate 905, thus improving the practicality of the device.

[0024] Specifically, a first connecting ring 5 is fixedly connected to the surface of the evaporator 1, and a second connecting ring 6 is fixedly connected to the surface of the tank 4. A fastening bolt 7 passes through the surface of the first connecting ring 5, and the first connecting ring 5 and the second connecting ring 6 are fixedly connected by the fastening bolt 7. There are multiple fastening bolts 7, which are symmetrically arranged on the surface of the first connecting ring 5.

[0025] By adopting the above technical solution, this MVR evaporator defoaming device, by setting fastening bolts 7 and tank 4, when people need to clean the filter plate 905 and stirring rod 907, they only need to unscrew the fastening bolts 7, so that the tank 4 containing the defoaming mechanism 9 can be removed, which makes it convenient for people to clean the filter plate 905 and stirring rod 907.

[0026] Specifically, a connecting pipe 10 is fixedly connected to the lower surface of the evaporator 1.

[0027] It should be noted that a liquid level sensor or an optical foam detector (not shown) can be installed on the top of the tank to monitor the foam height in real time and automatically trigger the motor to start and stop, which can further reduce manual intervention and improve the automation of the equipment.

[0028] It should be noted that the length or density of the needles can also be increased to improve the single-pass crushing effect, depending on the actual working environment.

[0029] It should be noted that parts that come into contact with liquids can be made of corrosion-resistant materials, such as 316L stainless steel or PTFE.

[0030] The working principle of this utility model is as follows: When the evaporator 1 evaporates the liquid inside, the liquid is repeatedly circulated through the circulation pipe 3 and the return pipe 2 during evaporation, which makes it easy for foam to be generated inside the evaporator 1 during evaporation. After the foam is generated inside the evaporator 1, the forward and reverse motor 902 is operated by an external switch, which causes the rotating shaft 903 to drive the stirring rod 907 to rotate. During the rotation of the stirring rod 907, the needles 908 set on the surface of the stirring rod 907 can break the foam generated by the liquid inside the evaporator 1, thereby preventing the foam from passing through the filter plate 905 and improving the practicality of the device. When it is necessary to clean the filter plate 905 and the stirring rod 907, it is only necessary to unscrew the fastening bolt 7 so that the tank 4 containing the defoaming mechanism 9 can be removed, which makes it convenient to clean the filter plate 905 and the stirring rod 907.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A device for removing foam from an MVR evaporator comprising an evaporator (1), a return pipe (2) and a circulation pipe (3), characterized in that: The return pipe (2) is fixedly connected to the side of the evaporator (1), the circulating pipe (3) is fixedly connected to the side of the evaporator (1), the side of the evaporator (1) is fixedly connected with the liquid inlet pipe (11), the upper end of the evaporator (1) is provided with the tank (4), the upper surface of the tank (4) is fixedly connected with the steam pipe (8), the inside of the tank (4) is provided with the defoaming mechanism (9), the defoaming mechanism (9) comprises a support frame (901), the support frame (901) is fixedly connected to the upper surface of the tank (4), the inside of the support frame (901) is fixedly connected with the reversible motor (902), the lower end of the output shaft of the reversible motor (902) is fixedly connected with the rotating shaft (903), the surface of the tank (4) is provided with the first bearing (904), the rotating shaft (903) is provided in the first bearing (904), the inside of the tank (4) is fixedly connected with the filter plate (905), the surface of the filter plate (905) is provided with the second bearing (906), the rotating shaft (903) is provided in the second bearing (906), the surface of the rotating shaft (903) is fixedly connected with the stirring rod (907), the stirring rod (907) has two groups, and is symmetrically arranged on the surface of the rotating shaft (903), the surface of the stirring rod (907) is provided with the needle (908), the needle (908) has a plurality of, and is symmetrically arranged on the surface of the stirring rod (907).

2. A MVR evaporator froth removal device according to claim 1, characterized in that: The surface of the evaporator (1) is fixedly connected with the first connecting ring (5), the surface of the tank (4) is fixedly connected with the second connecting ring (6), the surface of the first connecting ring (5) is provided with the fastening bolt (7), the first connecting ring (5) and the second connecting ring (6) are fixedly connected through the fastening bolt (7), the fastening bolt (7) has a plurality of, and is symmetrically arranged on the surface of the first connecting ring (5).

3. A device for removing foam from an MVR evaporator according to claim 1, characterized in that: The lower surface of the evaporator (1) is fixedly connected with the connecting pipe (10).

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