A folding demister applied to MVR system

Abstract

The utility model relates to a folding page demister technology field, the utility model provides a folding page demister for MVR system, folding page demister sets up in the separator inside MVR system, and folding page demister includes several groups of folding page board group, several groups of folding page board group all set up in the separator and along the axial interval arrangement of separator, each folding page board group has several baffling passages, and the import side of baffling passage faces the air inlet direction of separator, each spray pipe all sets up in the upper of a group of folding page board group, and the spray opening of spray pipe faces folding page board group, and spray pipe can spray water to folding page board group and baffling passage, to clean the liquid drop and floating foam that adhere on folding page board group, through above technical scheme, solved the technical problem that the conventional silk screen demister in prior art because of the small applicable area, high cost, weak strength and not easy to clean and maintain, difficult to meet the large -scale production and long -term stable operation demand of MVR system.

Description

Technical Field

[0001] This utility model relates to the field of folding demister technology, specifically to a folding demister applied to an MVR system. Background Technology

[0002] Demisters are indispensable key equipment in evaporation operations. Their main function is to separate liquids entrained in secondary steam to avoid loss of useful products or contamination of condensate. In MVR (Mechanical Vapor Recompression) energy-saving evaporator systems, the demisting process is particularly important because the core equipment of this system is the steam compressor, which is characterized by high precision, high speed, and high cost. It requires extremely high cleanliness of the gas entering the system and must effectively remove entrained solid-liquid mixtures and droplets; otherwise, serious problems such as compressor damage and reduced system efficiency will occur.

[0003] Currently, different types of demisters are required for different material properties. For materials with severe foaming, a demister structure is usually installed inside the separator of the MVR system. Traditionally, widely used wire mesh demisters are generally made of metal wire or engineering plastic woven into a mesh using a special warp and weft pattern, then pressed into a corrugated shape and manufactured to specific specifications. However, this type of demister has significant limitations: its applicable working area is small, making it difficult to meet the demisting needs of large-scale production equipment; it is also costly; the wire mesh is relatively weak and easily damaged; and it is inconvenient to clean and maintain, making it difficult to meet the requirements of long-term stable operation of MVR systems. Therefore, there is an urgent need for a more efficient and easy-to-clean demister device suitable for MVR system separators. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a folding demister for MVR systems, which solves the technical problems of traditional wire mesh demisters in the prior art, which are difficult to meet the requirements of large-scale production and long-term stable operation of MVR systems due to their small applicable area, high cost, weak strength, and difficulty in cleaning and maintenance.

[0005] According to one aspect, at least one embodiment of the present invention provides a folding demister for use in an MVR system, the folding demister being disposed inside the separator of the MVR system, the folding demister comprising: The folding plate assembly has several sets, and the several sets of folding plate assemblies are all disposed in the separator and arranged at intervals along the axial direction of the separator. Each set of folding plate assemblies has several baffle channels, and the inlet side of the baffle channel faces the air intake direction of the separator. The spray pipes are arranged in several groups, and each spray pipe corresponds to one of the folding plate groups. Each spray pipe is located above a group of folding plate groups, and the spray nozzle of the spray pipe faces the folding plate group. The spray pipes can spray water into the folding plate group and the baffle channel to clean the droplets and foam attached to the folding plate group.

[0006] Optionally, the folding panel assembly includes: The folding plate has several pieces, and the several folding plates are spaced apart in the separator. The flow channel is formed between adjacent folding plates, and a through hole is opened at the corner of each folding plate. The mounting rod has several rods, each of which is detachably installed inside the separator. Each mounting rod is connected through a through hole at the same corner of several folding plates, and the mounting rod is used to support the folding plates.

[0007] Optionally, the folding plate has an outer extension section on both sides, the outer extension section is rectangular, and the through hole is formed on the outer extension section of the folding plate.

[0008] Optionally, the diameter of the through hole is larger than the diameter of the mounting rod, and a plurality of elastic abutment members are fixedly sleeved on the outer wall of the mounting rod at intervals, the elastic abutment members including: A sleeve is fixedly fitted onto the mounting rod, and each sleeve corresponds to a through hole on the hinge plate; The sleeve has several elastic elements, which are circumferentially spaced on the outer peripheral wall of the sleeve. The end of each elastic element away from the sleeve abuts against the inner wall of the through hole. When the hinge plate is impacted by airflow, the elastic element can drive the hinge plate to vibrate.

[0009] Optionally, the outer wall of the sleeve has a plurality of mounting grooves, and the elastic element corresponds one-to-one with the mounting groove. One end of the elastic element is disposed in the mounting groove, and the end of the elastic element away from the mounting groove abuts against the inner wall of the through hole.

[0010] Optionally, the elastic element includes: The abutment plate has one end hinged to the inner wall of the mounting groove, and the other end of the abutment plate is located on the outside of the mounting groove; A spring is provided at one end in the mounting groove and at the other end abuts against the middle of the abutment plate. The spring is used to push the abutment plate so that the abutment plate presses against the inner wall of the through hole.

[0011] Optionally, the abutment plate has an inclined section and a straight section, the inclined section and the straight section are integrally formed, one end of the inclined section is hinged to the mounting groove, the other end of the inclined section is fixedly connected to the straight section, and the straight section is located outside the mounting groove.

[0012] Optionally, an anti-slip strip is provided on the surface of the straight section away from the sleeve.

[0013] Optionally, the inclined section of the abutment plate is hinged to the mounting groove via a hinge.

[0014] Optionally, a manhole is provided on the outer wall of the separator.

[0015] The beneficial effects of the embodiments of this utility model are as follows: In this invention, when gas containing droplets and foam enters the separator from the inlet direction, it flows towards the folding plate assembly. As the gas flows within the baffle channel, the constantly changing flow direction causes the droplets and foam to impact the folding plates due to inertia, thus separating them from the gas. During the demisting process, spray pipes periodically spray water into the folding plate assembly and the baffle channel to wash away the droplets and foam adhering to the folding plates, ensuring the demisting efficiency of the folding plate assembly. Several folding plate assemblies are arranged at axial intervals, increasing the contact area with the gas and efficiently separating droplets and foam from the gas, meeting the demisting requirements of large-scale production equipment. Simultaneously, the spray pipes facilitate cleaning and maintenance of the device, ensuring the long-term stable operation of the MVR system. Compared to traditional wire mesh demisters, it is lower in cost, stronger, and less prone to damage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the folding demister and separator in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the folding demister in the embodiment; Figure 3 for Figure 1 A magnified view of a portion at point A in the embodiment; Figure 4 for Figure 1 A schematic diagram of the structure of the elastic pressing member in the embodiment.

[0018] In the diagram: 1. Separator; 2. Folding plate assembly; 21. Folding plate; 211. Outer extension section; 2110. Through hole; 22. Baffle channel; 23. Mounting rod; 3. Spray pipe; 4. Elastic pressing component; 41. Sleeve; 42. Mounting groove; 43. Abutment plate; 431. Straight section; 432. Inclined section; 433. Anti-slip strip; 434. Spring; 5. Manhole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0020] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between 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.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-4 As shown, this invention illustrates a folding demister applied to an MVR system in one embodiment. The folding demister is installed inside the separator 1 of the MVR system and mainly consists of folding plate assemblies 2 and spray pipes 3. Several folding plate assemblies 2 are distributed at intervals along the axial direction of the separator 1. Each folding plate assembly 2 forms several baffle channels 22, with the inlet side of these baffle channels 22 facing the air intake direction of the separator 1. Similarly, several spray pipes 3 are arranged in pairs, corresponding one-to-one with the folding plate assemblies 2. Each spray pipe 3 is positioned above its corresponding folding plate assembly 2, with its spray nozzle facing the folding plate assembly 2.

[0026] For example, such as Figure 1 As shown, when gas carrying droplets and foam enters from the inlet direction of separator 1, it flows towards the folding plate assembly 2. As the gas flows within the baffle channel 22, due to the constantly changing flow direction, the droplets and foam impact the folding plates 21 due to inertia, thus separating from the gas. During the defoaming process, the spray pipe 3 periodically sprays water into the folding plate assembly 2 and the baffle channel 22 to wash away the droplets and foam adhering to the folding plates 21, ensuring the defoaming efficiency of the folding plate assembly 2.

[0027] Several sets of folding plates 2 are arranged at intervals along the axial direction, increasing the contact area with the gas and efficiently separating droplets and scum from the gas, meeting the demisting requirements of large-scale production equipment. At the same time, the spray pipes 3 facilitate cleaning and maintenance of the device, ensuring the long-term stable operation of the MVR system. Compared with traditional wire mesh demisters, it is lower in cost, stronger, and less prone to damage.

[0028] In some examples, the folding plate assembly 2 includes folding plates 21 and mounting rods 23. Several folding plates 21 are spaced apart within the separator 1, forming a flow-deflecting channel 22 between adjacent folding plates 21. Each folding plate 21 has a through hole 2110 at its corner. Several mounting rods 23 are detachably installed within the separator 1, and each mounting rod 23 passes through and connects to the through holes 2110 at the same corner of several folding plates 21, thus supporting the folding plates 21.

[0029] For example, such as Figure 2 and Figure 3 As shown, the mounting rod 23 fixes several folding plates 21 into the separator 1 through through holes 2110 at the corners of the folding plates 21, forming a folding plate group 2. After the gas enters the baffle channel 22, gas-liquid separation is achieved under the action of the folding plates 21. When it is necessary to repair or replace the folding plates 21, the mounting rod 23 can be removed from the separator 1, and then the folding plates 21 can be removed for operation. When the spray pipe 3 sprays water, the water flows through the folding plates 21 to clean them. The spacing of the folding plates 21 forms a suitable baffle channel 22, ensuring the defoaming effect. The detachable design of the mounting rod 23 makes the installation, removal, and replacement of the folding plates 21 more convenient, facilitating equipment maintenance and repair, and reducing maintenance costs.

[0030] In some examples, the folding plate 21 has an outer extension 211 on both sides, the outer extension 211 is rectangular, and the through hole 2110 is formed on the outer extension 211 of the folding plate 21.

[0031] For example, such as Figure 1 As shown, the mounting rod 23 passes through the through hole 2110 on the outer extension section 211 to fix the folding plate 21. When the gas flows in the baffle channel 22, the main body of the folding plate 21 separates droplets and foam in the gas, and the outer extension section 211 does not affect the normal flow of the gas. When disassembling the folding plate 21, it can be easily removed by cooperating with the mounting rod 23 through the through hole 2110 on the outer extension section 211.

[0032] The rectangular extension 211 provides ample space for the through hole 2110, making the connection between the mounting rod 23 and the hinge plate 21 more secure. At the same time, the extension 211 avoids the impact of the through hole 2110 on the hinge plate 21 body on the desmearing effect, thus ensuring the desmearing performance of the hinge plate 21.

[0033] In some examples, the diameter of the through hole 2110 is larger than the diameter of the mounting rod 23, and a plurality of elastic pressing members 4 are fixedly sleeved on the outer wall of the mounting rod 23 at intervals. The elastic pressing member 4 includes a sleeve 41 and an elastic member. The sleeve 41 is fixedly sleeved on the mounting rod 23, and each sleeve 41 corresponds to a through hole 2110 on a hinge plate 21. A plurality of elastic members are circumferentially spaced on the outer peripheral wall of the sleeve 41, and the end away from the sleeve 41 abuts against the inner wall of the through hole 2110.

[0034] For example, such as Figure 2As shown, when the folding plate 21 is impacted by airflow, because the diameter of the through hole 2110 is larger than the diameter of the mounting rod 23, the folding plate 21 will have a certain amount of movement space. At this time, the elastic element will deform, causing the folding plate 21 to vibrate. This vibration makes it easier for droplets and foam adhering to the folding plate 21 to fall off, and at the same time, the spray pipe 3 can more thoroughly clean the folding plate 21 when spraying water. The vibration of the folding plate 21 enhances the defoaming effect and reduces the adhesion of droplets and foam on the folding plate 21. The setting of the elastic pressing element 4 not only ensures the installation stability of the folding plate 21, but also provides it with the possibility of vibration, thereby improving the self-cleaning ability of the device.

[0035] In some examples, there are several mounting grooves 42 on the outer wall of the sleeve 41, and the elastic element corresponds to the mounting groove 42 one by one. One end of the elastic element is set in the mounting groove 42, and the other end abuts against the inner wall of the through hole 2110.

[0036] For example, such as Figure 4 As shown, the elastic element is installed in the mounting groove 42. When the folding plate 21 vibrates, the elastic element moves within the mounting groove 42 and interacts with the inner wall of the through hole 2110. The mounting groove 42 provides positioning and support for the elastic element, preventing it from shifting or being damaged during long-term use. The mounting groove 42 makes the installation of the elastic element more secure, extends its service life, ensures the stable operation of the elastic pressure element 4, and thus ensures that the folding plate 21 can continuously and effectively vibrate to remove suds. Specifically, when the airflow carrying droplets enters the baffle channel 22, the liquid will flow onto the wall of the folding plate 21 due to the impact. At this time, due to the bending structure of the folding plate 21, the airflow will impact the folding plate 21 as it passes through. Due to the presence of the elastic element, the folding plate 21 will vibrate repeatedly, resulting in a back-and-forth swaying situation. At this time, the droplets attached to the folding plate 21 will gather and fall under the action of vibration, keeping the folding plate 21 clean.

[0037] In some examples, the elastic element includes an abutment plate 43 and a spring 434. One end of the abutment plate 43 is hinged to the inner wall of the mounting groove 42, and the other end is located outside the mounting groove 42. One end of the spring 434 is disposed inside the mounting groove 42, and the other end abuts against the middle of the abutment plate 43. The spring 434 is used to push the abutment plate 43, so that the abutment plate 43 presses against the inner wall of the through hole 2110.

[0038] For example, such as Figure 4As shown, under the pushing action of spring 434, the abutment plate 43 is always pressed against the inner wall of the through hole 2110. When the hinge plate 21 is impacted by airflow, it exerts pressure on the abutment plate 43, causing the abutment plate 43 to swing around the hinge point, and the spring 434 is compressed; when the airflow impact weakens, the spring 434 returns to its original state, pushing the abutment plate 43 back to its original position, thereby causing the hinge plate 21 to vibrate. The elastic element has a simple structure, reliable operation, and can effectively convert airflow impact into vibration of the hinge plate 21, enhancing the device's defoaming and self-cleaning capabilities, and is easy to manufacture and maintain.

[0039] In some examples, the abutment plate 43 has an inclined section 432 and a straight section 431, which are integrally formed. One end of the inclined section 432 is hinged to the mounting groove 42, and the other end is fixedly connected to the straight section. The straight section 431 is located outside the mounting groove 42.

[0040] For example, such as Figure 3 As shown, when the hinge plate 21 vibrates, the inner wall of the through hole 2110 contacts the straight section 431 of the abutment plate 43. Due to the presence of the inclined section 432, the abutment plate 43 rotates more easily under force, and the deformation of the spring 434 is smoother. The contact area between the straight section 431 and the inner wall of the through hole 2110 is large, which can more stably drive the hinge plate 21 to vibrate. The integral molding structure of the inclined section 432 and the straight section 431 enhances the strength of the abutment plate 43, while making the force on the abutment plate 43 more reasonable, improving the working efficiency of the elastic element, further promoting the vibration of the hinge plate 21, and improving the defogging effect.

[0041] In some examples, anti-slip strips 433 are provided on the surface of the straight section 431 away from the sleeve 41.

[0042] For example, such as Figure 4 As shown, the anti-slip strip 433 increases the friction between the straight section 431 and the inner wall of the through hole 2110. When the abutment plate 43 drives the folding plate 21 to vibrate, it prevents relative sliding between the two, ensuring that the vibration can be effectively transmitted to the folding plate 21. The anti-slip strip 433 ensures reliable contact between the abutment plate 43 and the folding plate 21, improves the vibration transmission efficiency, and makes the vibration effect of the folding plate 21 better, which is beneficial to the shedding of droplets and foam.

[0043] In some examples, the inclined section 432 of the abutment plate 43 is hinged to the mounting groove 42 via a hinge. The hinge makes the hinge between the inclined section 432 and the mounting groove 42 more flexible, allowing the abutment plate 43 to swing smoothly around the hinge when subjected to force. Using a hinged connection improves the flexibility and reliability of the abutment plate 43's swing, reduces wear between components, and extends the service life of the device.

[0044] In some examples, a manhole 5 is provided on the outer wall of separator 1. When it is necessary to inspect, replace parts, or thoroughly clean the folding demister inside separator 1, personnel can enter the separator 1 through manhole 5 to perform operations. The provision of manhole 5 facilitates the maintenance and repair of the device, allowing personnel to promptly handle equipment malfunctions and ensure the normal operation of the folding demister and MVR system.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A folding demister for use in an MVR system, wherein the folding demister is disposed inside the separator (1) of the MVR system, characterized in that, The hinged demister includes: Folding plate group (2) has several groups, and the several groups of folding plate groups (2) are all arranged in the separator (1) and spaced apart along the axial direction of the separator (1). Each group of folding plate groups (2) has several baffle channels (22), and the inlet side of the baffle channel (22) faces the air intake direction of the separator (1). The spray pipe (3) has several groups, and the spray pipe (3) corresponds one-to-one with the folding plate group (2). Each spray pipe (3) is set above a group of folding plate groups (2). The spray nozzle of the spray pipe (3) faces the folding plate group (2). The spray pipe (3) can spray water into the folding plate group (2) and the baffle channel (22) to clean the droplets and foam attached to the folding plate group (2).

2. The folding demister for an MVR system according to claim 1, characterized in that, The folding panel assembly (2) includes: The folding plate (21) has several pieces, and the several pieces of the folding plate (21) are spaced apart in the separator (1). The flow channel (22) is formed between adjacent folding plates (21), and a through hole (2110) is opened at the corner of each folding plate (21). The mounting rod (23) has several rods, each of which can be detachably installed in the separator (1). Each mounting rod (23) is connected through a through hole (2110) at the same corner of several folding plates (21). The mounting rod (23) is used to support the folding plates (21).

3. A folding demister for an MVR system according to claim 2, characterized in that, The folding plate (21) has an outer extension section (211) on both sides. The outer extension section (211) is rectangular. The through hole (2110) is opened on the outer extension section (211) of the folding plate (21).

4. A folding demister for an MVR system according to claim 2, characterized in that, The diameter of the through hole (2110) is larger than the diameter of the mounting rod (23). A plurality of elastic pressing members (4) arranged at intervals are fixedly sleeved on the outer wall of the mounting rod (23). The elastic pressing members (4) include: Sleeves (41) are fixedly sleeved on the mounting rod (23), and each sleeve (41) corresponds to a through hole (2110) on the hinge plate (21). The elastic element has several parts, and the elastic elements are circumferentially spaced on the outer peripheral wall of the sleeve (41). The end of the elastic element away from the sleeve (41) abuts against the inner wall of the through hole (2110). When the folding plate (21) is impacted by airflow, the elastic element can drive the folding plate (21) to vibrate.

5. A folding demister for an MVR system according to claim 4, characterized in that, The sleeve (41) has a plurality of mounting grooves (42) on its outer wall. The elastic element corresponds to the mounting groove (42) one by one. One end of the elastic element is disposed in the mounting groove (42), and the end of the elastic element away from the mounting groove (42) abuts against the inner wall of the through hole (2110).

6. A folding demister for an MVR system according to claim 5, characterized in that, The elastic element includes: The abutment plate (43) is hinged at one end to the inner wall of the mounting groove (42), and the other end of the abutment plate (43) is located outside the mounting groove (42); A spring (434) is provided at one end in the mounting groove (42) and at the other end in contact with the middle of the abutment plate (43). The spring (434) is used to push the abutment plate (43) so that the abutment plate (43) presses against the inner wall of the through hole (2110).

7. A folding demister for an MVR system according to claim 6, characterized in that, The abutment plate (43) has an inclined section (432) and a straight section (431). The inclined section (432) and the straight section (431) are integrally formed. One end of the inclined section (432) is hinged to the mounting groove (42), and the other end of the inclined section (432) is fixedly connected to the straight section (431). The straight section (431) is located outside the mounting groove (42).

8. A folding demister for an MVR system according to claim 7, characterized in that, Anti-slip strips (433) are provided on the surface of the straight section (431) away from the sleeve (41).

9. A folding demister for an MVR system according to claim 7, characterized in that, The inclined section (432) of the abutment plate (43) is hinged to the mounting groove (42) by a hinge.

10. A folding demister for an MVR system according to claim 1, characterized in that, A manhole (5) is provided on the outer wall of the separator (1).

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