CN109316769B

CN109316769B - Film distribution assembly of falling film evaporator

Info

Publication number: CN109316769B
Application number: CN201811194187.8A
Authority: CN
Inventors: 李强; 龚全知; 刘农荣; 周洪生; 王喜
Original assignee: Individual
Current assignee: Li Qiang
Priority date: 2018-10-15
Filing date: 2018-10-15
Publication date: 2023-06-16
Anticipated expiration: 2038-10-15
Also published as: CN109316769A

Abstract

The invention provides a film distribution assembly of a falling film evaporator, and belongs to the technical field of evaporators. It has solved current cloth membrane ware and has been poor problem to lamellar body cloth membrane effect. This falling film evaporator's cloth membrane assembly, including the sun board and with the sun board set up the negative board relatively, be equipped with between sun board and the negative board and be used for making both relative fixed location structure, have the clearance that supplies steam to get into between sun board and the negative board, the top in clearance is equipped with the blocking structure that is used for preventing sewage entering, the lamellar body that forms by two-layer film coincide passes through the joint structure and connects in the clearance, the inside upper end and the clearance intercommunication of the wave runner of from top to bottom of lamellar body. The invention has the advantages of good use effect, convenient assembly, good structural stability and the like.

Description

Film distribution assembly of falling film evaporator

Technical Field

The invention belongs to the technical field of evaporators, and relates to a falling film evaporator, in particular to a film distribution assembly of the falling film evaporator.

Background

Distillation technology is a physical treatment process, which is a separation technology for removing soluble solids from water, and distillation is the only viable technology when other sewage treatment technologies cannot remove soluble solids from water. The falling film evaporator is one kind of efficient evaporating equipment, and may have one heat exchange carrier comprising two laminated film layers and wavy flow passage extending from top to bottom. When in use, the film distributor is arranged at the upper part of the sheet body, so that heating steam can enter the wavy flow passage. The film distributor in the prior art can only enable the upper end of the sheet body to be opened, is unfavorable for the entry of heating steam, and sewage can enter the sheet body from the upper part, so that the use effect is poor and the improvement is needed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a film distribution assembly of a falling film evaporator with good use effect.

The aim of the invention can be achieved by the following technical scheme:

the falling film evaporator comprises a positive plate and a negative plate which is opposite to the positive plate, wherein a positioning structure for enabling the positive plate and the negative plate to be relatively fixed is arranged between the positive plate and the negative plate, a gap for steam to enter is formed between the positive plate and the negative plate, a blocking structure for preventing sewage from entering is arranged above the gap, a sheet body formed by overlapping two layers of films is connected in the gap through a clamping structure, and the upper end of a wavy flow channel extending from top to bottom in the sheet body is communicated with the gap.

When the sheet body is clamped, the male plate and the female plate are separated, and the sheet body is clamped into the gap through the clamping structure and then the male plate and the female plate are combined together, so that the clamping of the sheet body is facilitated.

In the above-mentioned falling film evaporator's cloth membrane assembly, the joint structure including locating in the clearance its width be greater than the spacing groove of clearance width and locating the lamellar body upper end and be located the installing strip between the two-layer film, the installing strip in have the through-hole that is used for intercommunication wave runner and clearance, the thickness of installing strip is greater than the width of clearance.

The mounting strip is used for tensioning the upper port of the sheet body, preventing the sheet body from falling out of the limiting groove after the sheet body is pressed, fixing the mounting strip to the upper end of the sheet body during mounting, then placing the mounting strip with the sheet body into the limiting groove, and finally combining the male plate and the female plate together. Wherein the limit groove is divided into a left half groove and a right half groove, the left half groove is positioned on one side of the male plate close to the female plate, and the right half groove is positioned on one side of the female plate close to the male plate.

In the above-mentioned falling film evaporator's cloth membrane assembly, the blocking structure include locate the positive board upper portion along the strip sand grip of the transverse extension of width direction of lamellar body and locate on the negative board with the constant head tank of strip sand grip cooperation setting, the strip sand grip stretch into in the constant head tank. In order to improve the sealing performance, a sealing ring can be added between the strip-shaped raised strips and the positioning groove.

In the film distribution assembly of the falling film evaporator, the positioning structure comprises a plurality of positioning columns vertically arranged on the male plate and a plurality of positioning holes arranged on the female plate and arranged in one-to-one correspondence with the positioning columns, and the positioning columns are inserted into the corresponding positioning holes. The locating columns are matched with the locating holes, the locating columns are located below the strip-shaped raised strips, and the locating columns are located above the limiting grooves.

In the above-mentioned falling film evaporator's cloth membrane assembly, one side of the positive plate far away from the strip sand grip has a plurality of vertical guiding gutter I that extend.

In the film distribution assembly of the falling film evaporator, one side of the female plate, which is far away from the positioning groove, is provided with a plurality of guide grooves II which are vertically arranged, and the guide grooves I and the guide grooves II are oppositely arranged. During installation, the cloth membrane assembly and the cloth membrane assembly adjacent to the cloth membrane assembly are arranged in an abutting mode, namely, the male plate of the cloth membrane assembly and the female plate of the cloth membrane assembly adjacent to the cloth membrane assembly are arranged in an abutting mode, at the moment, the diversion trench I positioned on the male plate and the diversion trench II positioned on the female plate are arranged oppositely, and the diversion trench I and the diversion trench II form an overflow flow passage for sewage to pass through.

The film is made of high molecular polymer, the thickness of the film is 0.02-0.04mm, preferably 0.02mm, and the two films are fixed together by ultrasonic welding or hot melting.

After the sheet body is fixed by the assembly, steam enters from one end or two ends of the gap, enters into the wavy flow channel after passing through the through hole, sewage falls down from the upper part of the assembly, moves downwards along two sides of the sheet body under the blocking effect of the blocking structure, exchanges heat with the steam in the wavy flow channel in the moving process, heats the steam to become condensed water, secondary steam formed by heat absorption and evaporation of the sewage is dispersed from the surface of the sheet body, and the residual concentrated liquid flows downwards along the surface of the sheet body.

Compared with the prior art, the film distribution component of the falling film evaporator has the following advantages:

its structural design is reasonable, and is effectual to the fixed of lamellar body, and equipment is convenient, and structural stability is good, can set up the quantity of cloth membrane module according to actual demand when using, satisfies different demands, and application scope is wide, is convenient for be connected with the steam source moreover, can effectively separate steam and sewage, after using this cloth membrane module, has improved heat exchange efficiency greatly.

Drawings

Fig. 1 is a cross-sectional view of a preferred embodiment provided by the present invention.

Fig. 2 is an inside view of a male plate provided by the present invention.

Fig. 3 is an inside view of a female plate provided by the present invention.

Fig. 4 is an outside view of a male plate provided by the present invention.

Fig. 5 is an outside view of a female plate provided by the present invention.

In the figure, 1, a male plate; 2. a female plate; 3. a gap; 4. a sheet body; 5. a limit groove; 51. a left half groove; 52. a right half groove; 6. a mounting bar; 61. a through hole; 7. strip convex strips; 8. a positioning groove; 9. positioning columns; 10. positioning holes; 11. a diversion trench I; 12. and a diversion trench II.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

The falling film evaporator's cloth membrane assembly as shown in fig. 1, including sun board 1 and the negative board 2 that sets up relatively with sun board 1, be equipped with between sun board 1 and the negative board 2 and be used for making both relatively fixed's location structure, have the clearance 3 that supplies steam to get into between sun board 1 and the negative board 2, the top of clearance 3 is equipped with the structure that blocks that is used for preventing sewage entering, the lamellar body 4 that is formed by the coincide of two-layer film passes through the joint structure to be connected in clearance 3, the inside upper end and the clearance 3 intercommunication of the wave runner of extending from top to bottom of lamellar body 4. When the sheet body 4 is clamped, the male plate 1 and the female plate 2 are separated, the sheet body 4 is clamped into the gap 3 through the clamping structure, and then the male plate 1 and the female plate 2 are combined together, so that the clamping of the sheet body 4 is facilitated.

As shown in fig. 1, the clamping structure comprises a limit groove 5 with a width larger than the width of the gap 3 and a mounting strip 6 arranged at the upper end of the sheet body 4 and positioned between two layers of films, wherein the mounting strip 6 is internally provided with a through hole 61 for communicating the wavy flow passage with the gap 3, and the thickness of the mounting strip 6 is larger than the width of the gap 3. The installation strip 6 is used for tensioning the upper port of the sheet body 4, preventing the sheet body 4 from falling out of the limiting groove 5 after the sheet body 4 is pressed, fixing the installation strip 6 to the upper end of the sheet body 4 during installation, then placing the installation strip 6 with the sheet body 4 into the limiting groove 5, and finally combining the male plate 1 and the female plate 2 together. Wherein the limit groove 5 is divided into a left half groove 51 and a right half groove 52, the left half groove 51 is positioned on one side of the male plate 1 close to the female plate 2, and the right half groove 52 is positioned on one side of the female plate 2 close to the male plate 1.

As shown in fig. 1, the blocking structure includes a strip-shaped protruding strip 7 arranged on the upper portion of the male plate 1 and extending transversely along the width direction of the sheet body 4, and a positioning groove 8 arranged on the female plate 2 and matched with the strip-shaped protruding strip 7, wherein the strip-shaped protruding strip 7 extends into the positioning groove 8. In order to improve the sealing performance, a sealing ring can be added between the strip-shaped raised strips 7 and the positioning grooves 8.

As shown in fig. 2 and 3, the positioning structure comprises a plurality of positioning columns 9 vertically arranged on the male plate 1 and a plurality of positioning holes 10 arranged on the female plate 2 and corresponding to the positioning columns 9 one by one, and as shown in fig. 1, the positioning columns 9 are inserted into the corresponding positioning holes 10. The positioning columns 9 are matched with the positioning holes 10, the positioning columns 9 are located below the strip-shaped raised strips 7, and the positioning columns 9 are located above the limiting grooves 5.

As shown in fig. 4, the side of the male plate 1 away from the strip-shaped raised strips 7 is provided with a plurality of vertically extending diversion trenches 11. As shown in fig. 5, a side of the female plate 2 away from the positioning groove 8 is provided with a plurality of guide grooves 12 which are vertically arranged, and the first guide grooves 11 and the second guide grooves 12 are oppositely arranged. During installation, the cloth membrane assembly and the cloth membrane assembly adjacent to the cloth membrane assembly are arranged in an abutting mode, namely, the male plate 1 of the cloth membrane assembly and the female plate 2 of the cloth membrane assembly adjacent to the cloth membrane assembly are arranged in an abutting mode, at the moment, the diversion trench I11 positioned on the male plate 1 and the diversion trench II 12 positioned on the female plate 2 are arranged oppositely, and the diversion trench I11 and the diversion trench II 12 form an overflow flow passage for sewage to pass through.

In this embodiment, the film is made of a high molecular polymer, the thickness of the film is 0.02-0.04mm, preferably 0.02mm, and the two films are fixed together by ultrasonic welding or hot melting.

After the sheet body 4 is fixed by the assembly, steam enters from one end or two ends of the gap 3, enters into the wavy flow channel after passing through the through holes 61, sewage falls from the upper part of the assembly, moves downwards along two sides of the sheet body 4 under the blocking effect of the blocking structure, exchanges heat with the steam in the wavy flow channel in the moving process, heats the steam to become condensed water, secondary steam which is formed by heat absorption and evaporation of the sewage is dispersed from the surface of the sheet body 4, and the residual concentrated liquid flows downwards along the surface of the sheet body 4.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The falling film evaporator cloth film assembly is characterized by comprising a male plate (1) and a female plate (2) which is opposite to the male plate (1), wherein a positioning structure for enabling the male plate (1) and the female plate (2) to be relatively fixed is arranged between the male plate (1) and the female plate (2), a gap (3) for steam to enter is formed between the male plate (1) and the female plate (2), a blocking structure for preventing sewage from entering is arranged above the gap (3), a sheet body (4) formed by overlapping two layers of films is connected in the gap (3) through a clamping structure, and the upper end of a wavy flow channel extending from top to bottom in the sheet body (4) is communicated with the gap (3); the clamping structure comprises a limit groove (5) which is arranged in the gap (3) and has a width larger than the width of the gap (3), and a mounting strip (6) which is arranged at the upper end of the sheet body (4) and is positioned between two layers of films, wherein a through hole (61) for communicating the wavy flow passage and the gap (3) is formed in the mounting strip (6), and the thickness of the mounting strip (6) is larger than the width of the gap (3); the limiting groove (5) is divided into a left half groove (51) and a right half groove (52), the left half groove (51) is positioned on one side of the male plate (1) close to the female plate (2), and the right half groove (52) is positioned on one side of the female plate (2) close to the male plate (1).

2. The falling film evaporator cloth membrane assembly according to claim 1, wherein the blocking structure comprises a strip-shaped raised strip (7) which is arranged on the upper portion of the male plate (1) and transversely extends along the width direction of the sheet body (4) and a positioning groove (8) which is arranged on the female plate (2) and is matched with the strip-shaped raised strip (7), and the strip-shaped raised strip (7) stretches into the positioning groove (8).

3. The falling film evaporator cloth film assembly according to claim 1, wherein the positioning structure comprises a plurality of positioning columns (9) vertically arranged on the male plate (1) and a plurality of positioning holes (10) arranged on the female plate (2) and corresponding to the positioning columns (9) one by one, and the positioning columns (9) are inserted into the corresponding positioning holes (10).

4. The film distribution assembly of the falling film evaporator according to claim 2, wherein one side of the male plate (1) far away from the strip-shaped raised strips (7) is provided with a plurality of vertically extending diversion trenches (11).

5. The falling film evaporator cloth membrane assembly according to claim 4, wherein one side of the female plate (2) far away from the positioning groove (8) is provided with a plurality of guide grooves II (12) which are vertically arranged, and the guide grooves I (11) and the guide grooves II (12) are oppositely arranged.