A filter device for an evaporator

Abstract

The utility model discloses a filter device for evaporimeter belongs to evaporimeter filter field, aims at solving the silk screen demister blockage problem under prior art, at present, generally adopt high pressure water flush, steam purging or chemical solvent soak etc. cleaning mode, under partial working condition, even need to dismantle filter screen and carry out manual cleaning. The above operation not only time -consuming and labor -intensive, single cleaning time is usually as long as several hours, still need to carry out frequent shutdown to evaporimeter, lead to equipment effective operation time shortening, the problem of seriously restricting production efficiency. Including evaporimeter shell, the lower end right of evaporimeter shell is fixedly connected with liquid stream pipe, the right end of evaporimeter shell is fixedly connected with steam pipe at liquid stream pipe top, and the right end of liquid stream pipe and steam pipe is fixedly connected with separator shell, and the inside and outside both ends of separator shell are provided with cleaning mechanism, and the cleaning mechanism includes the top cap installed on the top of separator shell.

Description

Technical Field

[0001] This utility model belongs to the field of evaporator filtration, and specifically relates to a filtration device for evaporators. Background Technology

[0002] In modern industrial production, evaporators, as key equipment for material concentration and separation, are widely used in various fields such as food, chemical, and pharmaceutical industries. Wire mesh demisters, as commonly used gas-liquid separation and filtration devices in evaporators, play a crucial role in ensuring steam purity and reducing material loss due to their highly efficient droplet capture capabilities. However, when evaporators process materials containing suspended solids, high viscosity, or easily crystallizing materials, existing wire mesh demisters reveal significant shortcomings.

[0003] In the evaporation and concentration of high-viscosity materials such as fruit juice and syrup, pectin, sugar, and other components easily adhere to the surface of the wire mesh pores. When processing easily crystallizing or solid-containing materials such as salt solutions and slurries, the precipitated crystals or suspended particles quickly clog the filter structure. This clogging not only causes a sharp increase in pressure drop and airflow resistance in the wire mesh demister, increasing evaporator operating energy consumption, but also severely affects steam separation efficiency, leading to a decline in product quality. To solve the problem of wire mesh demister clogging, current common cleaning methods include high-pressure water washing, steam purging, or chemical solvent soaking. In some cases, manual cleaning of the filter screen is even required. These operations are not only time-consuming and labor-intensive, with a single cleaning session typically lasting several hours, but also require frequent shutdowns of the evaporator, resulting in a shortened effective operating time and severely restricting production efficiency.

[0004] Therefore, there is an urgent need to design an evaporator filtration device that avoids the need to shut down the evaporator frequently when cleaning the filter structure. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a filtration device for evaporators, aiming to solve the problem of clogging in wire mesh demisters. Currently, common cleaning methods include high-pressure water washing, steam purging, or chemical solvent soaking, and in some cases, even manual cleaning of the filter screen is required. These operations are not only time-consuming and labor-intensive, with each cleaning session typically lasting several hours, but also require frequent shutdowns of the evaporator, resulting in shortened effective equipment operating time and severely restricting production efficiency.

[0007] (2) Technical solution

[0008] To address the aforementioned technical problems, this utility model provides a filtration device for an evaporator, comprising an evaporator housing, a liquid flow pipe fixedly connected to the lower right side of the evaporator housing, a steam pipe fixedly connected to the right end of the evaporator housing above the liquid flow pipe, a separator housing fixedly connected to the right ends of the liquid flow pipe and the steam pipe, and cleaning mechanisms provided at both the inner and outer ends of the separator housing, the cleaning mechanism including a top cover installed above the separator housing, a partition fixedly connected to the middle position of the top inner side of the top cover, and a steam outlet fixedly connected to the middle position of the upper end of the top cover. The separator housing has a wire mesh demister installed at both ends of the inner side of the top cover. Liquid inlets are fixedly connected to both ends of the top cover. Drain outlets are fixedly connected to the top of both ends of the separator housing. A rotating shaft is connected to the top of the interior of the separator housing. A crank handle is welded to the right end of the rotating shaft. A sealing plate is fixedly connected to the outside of the rotating shaft. A frame is welded to the top of the right side of the outside of the separator housing. A spring is fixedly connected to the right side of the outside of the separator housing at the frame. A baffle is fixedly connected to the right end of the spring. Disassembly and assembly units are provided at both the inner and outer ends of the separator housing and the top cover.

[0009] Furthermore, the disassembly and assembly unit includes a limiting block fixedly connected to the upper inner side of the separator housing and the lower inner side of the top cover, and flanges are welded to the upper outer side of the separator housing and the lower outer side of the top cover.

[0010] Furthermore, rotating holes are provided at the left and right ends of the upper middle position of the separator housing, and the outer sides of the left and right ends of the rotating shaft are rotatably connected to the inner sides of the rotating holes.

[0011] Furthermore, the wire mesh demister is a fan-shaped wire mesh with an angle of °. The outer arc surface of the wire mesh demister is slidably connected to the inner side of the separator shell, and the side of the wire mesh demister away from the inner wall of the separator shell is slidably connected to the left or right side of the partition.

[0012] Furthermore, the sealing plate is a fan-shaped plate with an angle of °, and a rubber pad is pasted on the outer arc surface of the sealing plate. The side of the rubber pad away from the sealing plate is slidably connected to the inner side of the separator housing, and the outer side of the rotating shaft is slidably connected to the lower side of the partition plate.

[0013] Furthermore, the inner side of the sleeve frame is slidably connected to the outer side of the baffle, and the lower side of the baffle abuts against the upper outer side of the crank handle.

[0014] Furthermore, the flange has mounting holes inside.

[0015] Furthermore, the upper side of the limiting block at the upper inner end of the separator housing abuts against the lower side of the wire mesh demister, and the lower side of the limiting block on the inner side of the top cover abuts against the upper side of the wire mesh demister.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention features a cleaning mechanism. When the wire mesh demister requires cleaning after prolonged use, the crank handle is first turned to rotate the shaft, causing the sealing plate to rotate horizontally forward and backward. The crank handle is then fixed by a baffle plate. At this point, the sealing plate seals the area in front of the inner partition of the separator housing. This allows steam entering the separator housing to be filtered by the wire mesh demister at the rear of the partition when it exits. Simultaneously, cleaning water is introduced into the liquid inlet at the front of the top cover. The cleaning water then enters the separator housing, located in front of the partition, to clean the wire mesh demister in front of the partition. The wastewater generated during cleaning is discharged from the drain port at the front of the separator housing. After the wire mesh demister in front of the partition is cleaned, the same method is used to clean the wire mesh demister at the rear of the partition. By cleaning the wire mesh demisters sequentially in this way, one wire mesh demister can be cleaned while another continues filtering, thus eliminating the need for the evaporator to stop operating during the cleaning process.

[0019] This utility model, by setting up a disassembly and assembly unit, allows for the removal of bolts and nuts from the separator housing and the outer flange of the top cover when the wire mesh demister is damaged and needs to be replaced. This loosens the relative fixation of the two flanges, and then the top cover is moved upwards, causing the limiting block in the top cover to move upwards from the top of the wire mesh demister. This removes the limiting block from the top of the wire mesh demister, allowing it to be removed and replaced from the upper part of the separator housing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure at the outer end of the separator housing of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the separator shell of this utility model;

[0024] Figure 4 for Figure 2 Enlarged view of point A.

[0025] The labels in the attached diagram are as follows: 1. Evaporator shell; 2. Liquid flow pipe; 3. Steam pipe; 4. Separator shell; 501. Baffle plate; 502. Steam outlet; 503. Wire mesh demister; 504. Liquid inlet; 505. Drain outlet; 506. Shaft; 507. Handle; 508. Sealing plate; 509. Sleeve frame; 510. Spring; 511. Baffle plate; 512. Top cover; 601. Limiting block; 602. Flange. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This specific embodiment is a filter device for an evaporator, and its structural schematic diagram is shown below. Figures 1 to 4As shown, the device includes an evaporator shell 1, a liquid flow pipe 2 fixedly connected to the lower right side of the evaporator shell 1, a steam pipe 3 fixedly connected to the right end of the evaporator shell 1 above the liquid flow pipe 2, a separator shell 4 fixedly connected to the right ends of the liquid flow pipe 2 and the steam pipe 3, and a cleaning mechanism provided at both the inner and outer ends of the separator shell 4. The cleaning mechanism includes a top cover 512 installed on the top of the separator shell 4, a partition 501 fixedly connected to the middle position of the top inner side of the top cover 512, a steam outlet 502 fixedly connected to the middle position of the upper end of the top cover 512, and wire mesh demisters 503 provided at the front and rear ends of the lower inner side of the top cover 512. The wire mesh demister 503 is a 180° fan-shaped wire mesh. The outer arc surface of the wire mesh demister 503 is slidably connected to the inner side of the separator shell 4, and the side of the wire mesh demister 503 away from the inner wall of the separator shell 4 is slidably connected to the left or right side of the partition 501. The top cover 512 has liquid inlets 504 fixedly connected to its front and rear ends. The separator housing 4 has drain outlets 505 fixedly connected to its front and rear ends. The separator housing 4 has a rotating shaft 506 connected to its upper interior. Rotating holes are provided at the left and right ends of the middle position on the top of the separator housing 4. The outer sides of the left and right ends of the rotating shaft 506 are rotatably connected to the inner sides of the rotating holes. A crank handle 507 is welded to the right end of the rotating shaft 506. A sealing plate 508 is fixedly connected to the outer side of the rotating shaft 506. The sealing plate 508 is a fan-shaped plate with an angle of 180°. A rubber pad is pasted on the arc-shaped surface of the outer side of the sealing plate 508. The side of the rubber pad away from the sealing plate 508 is slidably connected to the inner side of the separator housing 4. The outer side of the rotating shaft 506 is slidably connected to the lower side of the partition plate 501. Thus, when the sealing plate 508 is rotated to a horizontal rearward or horizontal forward position, the rubber pad on the outside of the sealing plate 508 will contact the inside of the separator housing 4, so that the sealing plate 508 and the separator housing 4 remain sealed.

[0028] A frame 509 is welded to the upper right side of the outer side of the separator housing 4. A spring 510 is fixedly connected to the frame 509 on the right side of the outer side of the separator housing 4. A baffle 511 is fixedly connected to the right end of the spring 510. The inner side of the frame 509 is slidably connected to the outer side of the baffle 511. The lower side of the baffle 511 abuts against the upper outer side of the crank handle 507. Thus, when the crank handle 507 is turned, causing the sealing plate 508 to rotate to a horizontally backward or horizontally forward position, the spring 510 rebounds and pushes the baffle 511 to the upper outer side of the crank handle 507, preventing the crank handle 507 from rotating further. This fixes the sealing plate 508 in a horizontally backward or horizontally forward position.

[0029] Furthermore, the separator housing 4 and the top cover 512 are equipped with disassembly and assembly units at their inner and outer ends. Each disassembly and assembly unit includes a limiting block 601 fixedly connected to the upper inner side of the separator housing 4 and the lower inner side of the top cover 512. Flanges 602 are welded to the upper outer side of the separator housing 4 and the lower outer side of the top cover 512. Mounting holes are provided inside the flanges 602. Thus, by passing bolts through the mounting holes inside the flanges 602 on the outer sides of the separator housing 4 and the top cover 512, and then threading a nut onto the other end of the bolt, the flanges 602 on the outer sides of the separator housing 4 and the top cover 512 can be relatively fixed.

[0030] Furthermore, the upper side of the limiting block 601 on the upper inner side of the separator housing 4 abuts against the lower side of the wire mesh demister 503, and the lower side of the limiting block 601 on the inner side of the top cover 512 abuts against the upper side of the wire mesh demister 503. Thus, after the top cover 512 is installed on the upper end of the separator housing 4, the limiting blocks 601 on the inner sides of the separator housing 4 and the top cover 512 will be located on the upper and lower sides of the wire mesh demister 503, respectively, fixing the wire mesh demister 503 to the lower inner side of the top cover 512, thus filtering the steam that enters the separator housing 4 and exits from the steam outlet 502.

[0031] Working principle: When it is necessary to clean the wire mesh demister 503 inside the separator housing 4, first turn the handle 507 to drive the rotating shaft 506 to rotate, so that the sealing plate 508 rotates to a horizontal position. Then, it moves to the upper outer side of the handle 507 through the baffle 511 to fix the handle 507. At this time, the sealing plate 508 closes the front of the inner partition 501 of the separator housing 4, so that the steam entering the separator housing 4 is filtered by the wire mesh demister 503 at the rear end of the partition 501 when it is discharged. At the same time, cleaning fluid is introduced into the liquid inlet 504 at the front end of the top cover 512. Water is then used to clean the wire mesh demister 503 in front of the separator housing 4, and the wastewater generated during cleaning is discharged from the drain port 505 at the front end of the separator housing 4. After the wire mesh demister 503 in front of the separator 501 is cleaned, the wire mesh demister 503 at the rear end of the separator 501 is cleaned in the same way. After cleaning is completed, the left push baffle 511 is pushed, and the sealing plate 508 rotates vertically downward due to gravity, so that the wire mesh demister 503 can simultaneously perform steam filtration.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter device for an evaporator, comprising an evaporator housing (1), characterized in that, A liquid flow pipe (2) is fixedly connected to the lower right side of the evaporator shell (1). A steam pipe (3) is fixedly connected to the right end of the evaporator shell (1) above the liquid flow pipe (2). A separator shell (4) is fixedly connected to the right ends of the liquid flow pipe (2) and the steam pipe (3). A cleaning mechanism is provided at both the inner and outer ends of the separator shell (4). The cleaning mechanism includes a top cover (512) installed on the top of the separator shell (4). A partition plate (501) is fixedly connected to the middle position of the top inner side of the top cover (512). A steam outlet (502) is fixedly connected to the middle position of the upper end of the top cover (512). A wire mesh demister (503) is provided at the front and rear ends of the lower inner side of the top cover (512). 12) An inlet (504) is fixedly connected to the front and rear ends of the upper part. A drain (505) is fixedly connected to the upper part of the front and rear ends of the separator housing (4). A rotating shaft (506) is connected to the upper part of the interior of the separator housing (4). A crank (507) is welded to the right end of the rotating shaft (506). A sealing plate (508) is fixedly connected to the outside of the rotating shaft (506). A sleeve frame (509) is welded to the upper part of the right side of the outside of the separator housing (4). A spring (510) is fixedly connected to the right side of the outside of the separator housing (4) at the sleeve frame (509). A baffle (511) is fixedly connected to the right end of the spring (510). Disassembly and assembly units are provided at the inner and outer ends of the separator housing (4) and the top cover (512).

2. The filtration device for an evaporator according to claim 1, characterized in that, The disassembly and assembly unit includes a limiting block (601) fixedly connected to the upper inner side of the separator housing (4) and the lower inner side of the top cover (512). A flange (602) is welded to the upper outer side of the separator housing (4) and the lower outer side of the top cover (512).

3. The filtration device for an evaporator according to claim 1, characterized in that, Rotating holes are provided at the left and right ends of the upper middle position of the separator housing (4), and the outer sides of the left and right ends of the rotating shaft (506) are rotatably connected to the inner side of the rotating holes.

4. A filter device for an evaporator according to claim 1, characterized in that, The wire mesh demister (503) is a 180° fan-shaped wire mesh. The outer arc surface of the wire mesh demister (503) is slidably connected to the inner side of the separator shell (4). The side of the wire mesh demister (503) away from the inner wall of the separator shell (4) is slidably connected to the left or right side of the partition (501).

5. A filter device for an evaporator according to claim 1, characterized in that, The sealing plate (508) is a fan-shaped plate with an angle of 180°. A rubber pad is pasted on the arc-shaped surface of the outer side of the sealing plate (508), and the side of the rubber pad away from the sealing plate (508) is slidably connected to the inner side of the separator housing (4). The outer side of the rotating shaft (506) is slidably connected to the lower side of the partition plate (501).

6. A filter device for an evaporator according to claim 1, characterized in that, The inner side of the sleeve (509) is slidably connected to the outer side of the baffle (511), and the lower side of the baffle (511) abuts against the upper outer side of the crank handle (507).

7. A filter device for an evaporator according to claim 2, characterized in that, The flange (602) has mounting holes inside.

8. A filter device for an evaporator according to claim 2, characterized in that, The upper side of the limiting block (601) at the upper inner side of the separator housing (4) abuts against the lower side of the wire mesh demister (503), and the lower side of the limiting block (601) at the inner side of the top cover (512) abuts against the upper side of the wire mesh demister (503).

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