Defoaming device of MVR (Mechanical Vapor Recompression) vacuum distillation system

Abstract

The utility model relates to the technical field of industrial wastewater treatment, and discloses a defoaming device of an MVR vacuum distillation system, the defoaming device is arranged in a box body, the defoaming device is arranged above a wastewater inlet pipe, the defoaming device is arranged on the cross section of the box body, and the defoaming device comprises a plurality of groups of defoaming plates which are annularly distributed at equal intervals; the defoaming plate comprises a vertical plate body, a second bent part is arranged at the lower end of the plate body, and the included angle between the second bent part and the plate body is larger than 90 degrees and smaller than 180 degrees. The defoaming device is arranged in the evaporator, the structure is good in defoaming effect, foam generated when waste water flows is reduced, the follow-up filtering effect is improved, the structure is simple, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to a defoaming device for an MVR vacuum distillation system. Background Art

[0002] In industrial wastewater treatment, an MVR vacuum distillation system is used. The MVR vacuum distillation system includes an evaporator. When the oily wastewater flows, foam will appear. When the liquid is discharged, excessive foam will lead to poor filtering effect. Therefore, it is necessary to develop a defoaming device in the evaporator. The existing defoaming device achieves defoaming by setting a partition with holes, but the defoaming effect is poor. Utility Model Content

[0003] Based on this, it is necessary to provide a defoaming device used in the evaporator in the MVR vacuum distillation system to address the problem that foam is prone to occur in the evaporator in the MVR vacuum distillation system.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a defoaming device for an MVR vacuum distillation system, comprising a box body, a wastewater inlet pipe is provided at the side end of the box body, the defoaming device is arranged inside the box body, the defoaming device is placed above the wastewater inlet pipe, and the defoaming device is arranged in the transverse section of the box body, the defoaming device comprises a plurality of groups of defoaming plates distributed in an annular shape and at equal intervals, the defoaming plate comprises a vertical plate body, a second bending portion is provided at the lower end of the plate body, and the angle between the second bending portion and the plate body is greater than 90 degrees and less than 180 degrees.

[0005] By adopting the above technical solution, the foam generated during the evaporation of oily wastewater is reduced through the defoaming device, thereby improving the subsequent filtration effect.

[0006] In a preferred example, the utility model can be further configured as follows: it also includes a partition, which is placed above the port of the wastewater inlet pipe and below the defoaming device. The partition is arranged along the wall and is inclined downward away from one end of the wastewater inlet pipe.

[0007] By adopting the above technical solution, a buffering effect is achieved to prevent the wastewater from flushing the defoaming device when entering the box, thereby preventing the defoaming effect of the defoaming device from being affected.

[0008] In a preferred example, the present invention can be further configured as follows: a first bent portion bent downward is provided on the side of the partition away from the inner wall of the box.

[0009] By adopting the above technical solution, an overall rectification effect is achieved.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: The defoaming device further includes a cylinder, and multiple groups of defoaming plates are annularly and equidistantly distributed on the side wall of the cylinder with the cylinder as the center. An outer ring is fixedly connected to the outside of multiple groups of defoaming plates, and the outer ring is fixedly connected to the inner wall of the box body.

[0011] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0012] By arranging a defoaming device in the evaporator, this structure has a good defoaming effect, reduces the foam generated when the wastewater flows, and improves the effect of subsequent filtration. The structure of the present utility model is simple and has good practical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 It is a schematic diagram of the box body structure in the MVR vacuum distillation system;

[0015] Figure 2 It is a schematic diagram of the structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the partition plate and the wastewater inlet pipe in the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the defoaming device in the present utility model;

[0018] Figure 5 It is a schematic diagram of the structure of the defoaming device removing the outer ring in the present utility model;

[0019] Figure 6 It is a schematic diagram of the structure of the defoaming plate in the present utility model.

[0020] In the drawings:

[0021] 1. Box body; 11. Wastewater inlet pipe; 2. Partition plate; 21. First bending part; 3. Defoaming device; 31. Outer ring; 32. Cylinder; 33. Defoaming plate; 331. Plate body; 332. Second bending part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] exist Figures 1-5 In the illustrated embodiment, the utility model provides a technical solution: a defoaming device for an MVR vacuum distillation system, comprising a housing 1 , a wastewater inlet pipe 11 being provided at a side end of the housing 1 , and a defoaming device 3 being arranged inside the housing 1 .

[0024] The defoaming device 3 is placed above the wastewater inlet pipe 11, and the defoaming device 3 is arranged in the transverse section of the box body 1. The defoaming device 3 includes a column 32, and multiple groups of defoaming plates 33 are equidistantly distributed on the side wall of the column 32 with the column 32 as the center. The outer sides of the multiple groups of defoaming plates 33 are fixedly connected with an outer ring 31, and the outer ring 31 is fixedly connected to the inner wall of the box body 1. The defoaming plate 33 includes a vertical plate body 331, and the lower end of the plate body 331 is provided with a second bending portion 332, and the second bending portion 332 is connected to the plate body The angle between 331 is greater than 90 degrees and less than 180 degrees. In one embodiment, the angle is 135 degrees. Two adjacent defoaming plates 33 are a group to form a channel. The channel composed of two adjacent plate bodies 331 is vertical, and the channel composed of two adjacent second bending portions 332 is inclined. The inclination angle of the channel is the same as the inclination angle of the second bending portion 332. When the foam passes between two adjacent defoaming plates 33 from bottom to top, the channel needs to bend and cannot pass straight through.

[0025] The partition 2 is placed above the port of the wastewater inlet pipe 11 and below the defoaming device 3. The partition 2 is arranged along the wall and is inclined downward at one end away from the wastewater inlet pipe 11. The side of the partition 2 facing away from the inner wall of the box body 1 is provided with a first bent portion 21 bent downward.

[0026] The specific working principle of the utility model will be described in detail below: the foam generated by the oily wastewater during the flow enters the interior of the box body 1 from the wastewater inlet pipe 11, and after being rectified by the partition 2, the liquid level rises, and when the foam passes through the defoaming device 3, the foam passes through the obstruction of the second bending portion 332 and enters the channel composed of a group of two defoaming plates 33, and after passing through the inclined channel composed of two adjacent second bending portions 332, it enters the vertical channel composed of two adjacent plates 331 and passes through, and the foam is blocked, achieving rapid defoaming and good defoaming effect.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. MVR vacuum distillation system defoaming device, including a box body (1), a waste water inlet pipe (11) is arranged at the side end of the box body (1), and it is characterized in that, The defoaming device (3) is arranged inside the box body (1); The defoaming device (3) is placed above the wastewater inlet pipe (11), and the defoaming device (3) is arranged in the transverse section of the box body (1). The defoaming device (3) includes multiple groups of defoaming plates (33) that are annularly and equidistantly distributed. The defoaming plate (33) includes a plate body (331) that stands upright. A second bending portion (332) is provided at the lower end of the plate body (331). The included angle between the second bending portion (332) and the plate body (331) is greater than 90 degrees and less than 180 degrees.

2. The defoaming device for the MVR vacuum distillation system according to claim 1, wherein: It further includes a partition plate (2). The partition plate (2) is placed above the port of the wastewater inlet pipe (11) and below the defoaming device (3). The partition plate (2) is arranged along the wall surface, and the end away from the wastewater inlet pipe (11) is inclined downward.

3. The MVR vacuum distillation system defoaming device according to claim 2, characterized in that: A first bending portion (21) that bends downward is provided on the side of the partition plate (2) facing away from the inner wall of the box body (1).

4. The defoaming device of the MVR vacuum distillation system according to claim 1, wherein: The defoaming device (3) further includes a column body (32). Multiple groups of the defoaming plates (33) are annularly and equidistantly distributed on the side wall of the column body (32) with the column body (32) as the center. An outer ring (31) is fixedly connected to the outside of multiple groups of the defoaming plates (33). The outer ring (31) is fixedly connected to the inner wall of the box body (1).

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