Anti-blocking heat pump falling film concentration evaporator

Abstract

The utility model provides an anti-clogging heat pump falling film concentration evaporator, which relates to the field of falling film concentration evaporators, and comprises an evaporator shell and a descaling component, a heating plate is arranged on the inner side of the evaporator shell, an upper connecting plate is arranged at the upper end of the heating plate, a lower connecting plate is arranged at the lower end of the heating plate, and the descaling component is arranged in the evaporator shell. The upper end of the upper connecting plate is movably connected with a distributor, the lower connecting plate is movably connected with a guide rod, the outer side of the guide rod is sleeved with a spring, the descaling assembly comprises a mounting frame connected to the outer wall of the evaporator shell, a motor is mounted on the outer side of the mounting frame, and the output shaft end of the motor is connected with a driving shaft; and the driving shaft is rotationally inserted into a gap between the heating plates, and the outer side of the driving shaft is connected with a collision ball through a connecting rod. The vibrating descaling device has a good vibrating descaling effect, and the effect of evaporating and concentrating feed liquid is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to falling film concentration evaporator technical field, concretely relates to a kind of anti-blocking heat pump falling film concentration evaporator. BACKGROUND

[0002] The more common evaporator currently has lift film evaporator, falling film evaporator and scraper type evaporator.Lift film evaporator is that dilute material enters from the bottom of evaporator, film is formed along tube wall and is lifted to realize evaporation concentration process;Dilute material of falling film evaporator is added from the top of evaporator, and film is formed along tube wall under the action of gravity, and evaporates and thickens in this process;Dilute liquid of scraper type evaporator is added from the upper part along tangent, material forms downward rotating film on inner wall, and realizes evaporation concentration in this process.

[0003] After searching, prior art (announcement number: CN212141514U), which is described as "a kind of heat transfer plate falling film concentration evaporator, relates to the evaporation concentration field of papermaking and chemical industry etc.Said a kind of heat transfer plate falling film concentration evaporator, its features include top head, demister, liquid distributor, falling film evaporation plate group, liquid collecting tank, feed pipe, concentrated liquid discharge pipe, secondary steam discharge pipe and evaporator tank body.The material inlet of the heat transfer plate falling film evaporator is installed in the side of top head, and the secondary steam discharge pipe is in the middle position of the top of top head.Top head is directly connected with evaporator tank body through flange, and liquid collecting tank is directly connected in the bottom of evaporator tank body with flange.The liquid distributor is installed on the top of evaporation plate and is connected with feed port.The demister is installed on the upper portion of liquid distributor.Compared with the traditional falling film evaporation field, the utility model has the following advantages: investment cost is reduced, heat transfer efficiency is improved, equipment service life is longer, evaporation plate is easy to clean and maintain, etc.

[0004] Although the heat transfer plate falling film concentration evaporator in prior art realizes low cost, high efficiency and easy cleaning effect, there are still some deficiencies: the falling film evaporation plate group involved in the existing heat transfer plate falling film concentration evaporator produces dirt on its surface after long time use, and general flushing cannot achieve good cleaning effect, and the falling film evaporation plate group is generally flat structure, so that the falling film area produced by material liquid adhering on the surface is small, and the flow rate is fast, thereby leading to low evaporation efficiency. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects in prior art, a kind of anti-blocking heat pump falling film concentration evaporator is provided to solve the problems in the above background.

[0006] In order to achieve the above object, provide a kind of anti-clogging heat pump falling film concentration evaporator, including: evaporator shell and descaling component, the inner side of the evaporator shell is equipped with heating sheet, and the upper end of heating sheet is equipped with upper connecting plate, and the lower end of heating sheet is equipped with lower connecting plate, the upper end of the upper connecting plate is movably connected with distributor, and the lower connecting plate is movably connected with guide rod, and the outer side of guide rod is sleeved with spring, the descaling component includes mounting bracket connected on the outer wall of evaporator shell, and motor is installed on the outer side of mounting bracket, and the output shaft end of motor is connected with driving shaft, the driving shaft is inserted into the gap of heating sheet, and the outer side of driving shaft is connected with collision ball by connecting rod.

[0007] Further, the top of the evaporator shell is connected with secondary steam outlet, and a demister is arranged on the lower side of the secondary steam outlet, and a feed pipe is arranged on the lower side of the demister.

[0008] Further, the upper end of the distributor is connected with the feed pipe, and the outer end of the feed pipe extends to the outer side of the evaporator shell.

[0009] Further, the outer wall of the evaporator shell is connected with a steam inlet, and the inner side end of the steam inlet is connected to the outer side of the heating sheet, and a concentrated liquid outlet and a condensate outlet are arranged on the bottom of the evaporator shell.

[0010] Further, the heating sheet is arranged in an inclined folded plate structure connected continuously from top to bottom, and gaps are arranged between the heating sheets of different groups.

[0011] Further, the bottom of the lower connecting plate is provided with a mesh plate, and the lower side of the mesh plate is provided with a liquid discharge hole.

[0012] Further, the outer side of the driving shaft is connected with a main gear, and the outer side of the main gear is engaged with a slave gear, and the inner side of the slave gear is connected with a driven shaft.

[0013] The beneficial effects of the present application are as follows:

[0014] 1. When in use, the liquid enters the distributor in the evaporator shell through the feed pipe, and forms a uniform liquid film on the surface of the heating sheet through the distributor. Under the action of gravity, the liquid film on the heating sheet with a zigzag structure is affected by the inclination angle to slow down the downward speed, and at the same time, the area on the heating sheet is increased, thereby fully contacting and evaporating the liquid during the steam heating process, greatly improving the evaporation concentration effect.

[0015] 2. When descaling, the motor included in the descaling assembly is used, so that in the state of starting the motor, the impact ball is driven to rotate through the driving shaft, the main gear and the connecting rod of the slave gear, and at the same time, the lower connecting plate at the lower end of the heating plate is movably connected with the guide rod, and under the action of the spring, the heating plate is vibrated, so that under the action of flushing (the material liquid is pumped into the evaporator by replacing the cleaning agent), a good vibration descaling cleaning effect can be achieved, and the effect of preventing the gap of the heating plate from being blocked is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an internal structure schematic view of the evaporator shell of the embodiment of the utility model.

[0017] Figure 2 It is a side view structure schematic view of the heating plate sheet of the embodiment of the utility model.

[0018] Figure 3 It is a three-dimensional structure schematic view of a single heating plate sheet of the embodiment of the utility model.

[0019] Figure 4 It is a structure schematic view of the embodiment of the utility model. Figure 2 A place in the middle.

[0020] Figure 5 It is a structure schematic view of the embodiment of the utility model. Figure 2 B place in the middle.

[0021] Figure 6 It is a partial top view structure schematic view of the descaling assembly of the embodiment of the utility model.

[0022] In the figure: 1, evaporator shell; 11, secondary steam outlet; 12, demister; 13, feed pipe; 14, distributor; 15, heating plate sheet; 151, upper connecting plate; 152, lower connecting plate; 153, guide rod; 154, spring; 155, mesh plate; 16, steam inlet; 17, concentrated liquid outlet; 18, condensate water outlet; 19, liquid discharge hole; 2, descaling assembly; 21, motor; 22, mounting frame; 23, main gear; 24, driving shaft; 25, slave gear; 26, connecting rod; 27, impact ball. DETAILED DESCRIPTION

[0023] Referring to Figures 1 to 6The utility model provides a kind of anti-blocking heat pump falling-film concentration evaporator shown, comprising: evaporator shell 1 and descaling component 2, the inside of evaporator shell 1 is equipped with heating plate piece 15, and the upper end of heating plate piece 15 is equipped with upper connecting plate 151, and the lower end of heating plate piece 15 is equipped with lower connecting plate 152, and the upper end of upper connecting plate 151 is movably connected with distributor 14, and lower connecting plate 152 is movably connected with guide rod 153, and the outside of guide rod 153 is sleeved with spring 154, descaling component 2 includes mounting bracket 22 connected on the outer wall of evaporator shell 1, and motor 21 is installed on the outside of mounting bracket 22, and the output shaft end of motor 21 is connected with driving shaft 24, driving shaft 24 is inserted into the gap of heating plate piece 15, and the outside of driving shaft 24 is connected with collision ball 27 by connecting rod 26, driving shaft 24 is connected with main gear 23 outside, and the outside of main gear 23 is engaged with from gear 25, and from gear 25 is connected with driven shaft inside.

[0024] In the embodiment, evaporator shell 1 and internal structure and descaling component 2 constitute the main body structure of the anti-blocking heat pump falling-film concentration evaporator involved in the application.

[0025] Specifically, distributor 14 adopts the same distributor component structure in the existing heat pump falling-film evaporator, a plurality of upper and lower through-flow holes are formed in distributor 14, N-shaped grooves are formed in the lower end of distributor 14, each upper connecting plate 151 is inserted into the grooves, and the upper connecting plate 151 is connected with the grooves in interference fit.

[0026] It should be noted that the flow guide holes are arranged on the upper side of the groove wall, so that the material liquid flows downward through the grooves to the heating plate piece 15.

[0027] Specifically, the driven shaft is also connected with collision ball 27 inside evaporator shell 1, collision ball 27 is in contact with the wall of heating plate piece 15 in the initial state, and the driven shaft and driving shaft 24 are rotatably connected with evaporator shell 1, and a sealing ring is arranged on the connection part.

[0028] Specifically, the connection part of mounting bracket 22 and the outer wall of evaporator shell 1 is arranged as an inclined bracket structure, and the rotation of mounting bracket 22 and main gear 23 does not interfere with each other.

[0029] As Figures 1 to 4In the embodiment, the top of the evaporator shell 1 is connected with a secondary steam outlet 11, and a demister 12 is arranged at the lower side of the secondary steam outlet 11, and a feed pipe 13 is arranged at the lower side of the demister 12, the upper end of a distributor 14 is connected with the feed pipe 13, and the outer end of the feed pipe 13 extends to the outside of the evaporator shell 1, the outer wall of the evaporator shell 1 is connected with a steam inlet 16, and the inner end of the steam inlet 16 is connected at the outside of the heating plate 15, and a concentrated liquid outlet 17 and a condensed water outlet 18 are arranged at the bottom of the evaporator shell 1, the heating plate 15 is arranged as an inclined folded plate structure which is connected continuously from top to bottom, and gaps are arranged between the groups of heating plates 15, the bottom of the lower connecting plate 152 is provided with a mesh plate 155, and the lower side of the mesh plate 155 is provided with a liquid discharge hole 19.

[0030] In the embodiment, the secondary steam outlet 11, the demister 12, the feed pipe 13, and the steam inlet 16, the concentrated liquid outlet 17 and the condensed water outlet 18 at the bottom are consistent with the related components structure and principles of the falling film evaporator in the prior art.

[0031] Specifically, the secondary steam liquid film generated by the evaporation of the liquid film under heating overflows from the surface, and then is discharged from the secondary steam outlet 11 through the demister 12, the concentrated liquid leaves the heating plate 15 downward and is discharged from the liquid discharge hole 19 through the mesh plate 155 at the bottom of the evaporator shell 1, and the lower end of the liquid discharge hole 19 is connected with the concentrated liquid outlet 17.

[0032] Specifically, the heating steam is distributed into each heating plate 15 through the steam collecting box, and gradually condenses into water in the plate gap, and is discharged from the plate gap.

[0033] As a preferred embodiment, the heating plate 15 of the zigzag plate structure increases the formation area of the liquid film after the liquid adheres to the heating plate, and increases the resistance to downward flow, so as to prolong the time of being heated by steam.

[0034] In use, the liquid enters the distributor in the evaporator shell through the feed pipe, and forms a uniform liquid film on the surface of the heating plate through the distributor, under the action of gravity, the liquid film on the heating plate with zigzag structure is delayed in downward flow speed due to the influence of the inclined angle, and the area on the heating plate is increased, thereby in the process of steam heating, the liquid film can fully contact with the steam and be evaporated, and the evaporation and concentration effect is greatly improved; in the descaling process, the motor included in the descaling assembly is used, so that under the state of starting the motor, the impact ball is rotated through the driving shaft, the main gear and the gear connecting rod, and the lower connecting plate at the lower end of the heating plate is movably connected with the guide rod, and under the action of the spring, the heating plate is vibrated, and under the action of flushing (the liquid is replaced by cleaning agent and pumped into the evaporator), a good vibration descaling cleaning effect can be achieved, and the effect of preventing the gap between the heating plates from being blocked is achieved.

[0035] The anti-blocking heat pump falling-film concentration evaporator of the utility model can effectively solve the problems raised in the background art, realizes good vibration descaling effect on the basis of the existing anti-blocking heat pump falling-film concentration evaporator technology, and strengthens the effect of liquid evaporation and concentration.

Claims

1. A clog-resistant heat pump falling-film concentration evaporator, comprising: The utility model provides an evaporator shell (1) and descaling assembly (2), it is characterized by: the inside of evaporator shell (1) is equipped with heating sheet (15), and the upper end of heating sheet (15) is equipped with upper connecting plate (151), and is equipped with lower connecting plate (152) in the lower end of heating sheet (15), the upper end swing joint of upper connecting plate (151) is equipped with distributor (14), and lower connecting plate (152) swing joint is equipped with guide rod (153), and the outside of guide rod (153) is sleeved with spring (154), the descaling assembly (2) includes the mounting bracket (22) connected in the outer wall of evaporator shell (1), and the outside of mounting bracket (22) is equipped with motor (21), and the output shaft end of motor (21) is connected with drive shaft (24), drive shaft (24) rotation inserts the gap of heating sheet (15), and the outside of drive shaft (24) is connected with collision ball (27) through connecting rod (26).

2. A clog resistant thermosyphon falling film evaporator / concentrator according to claim 1, wherein, The top of the evaporator shell (1) is connected with a secondary steam outlet (11), and a demister (12) is arranged below the secondary steam outlet (11), and a feed pipe (13) is arranged below the demister (12).

3. The anti-blocking heat pump falling-film evaporator of claim 1, wherein, The upper end of the distributor (14) is connected with the feed pipe (13), and the outer end of the feed pipe (13) extends to the outside of the evaporator shell (1).

4. The anti-blocking heat pump falling-film evaporator of claim 1, wherein, The outer wall of the evaporator shell (1) is connected with a steam inlet (16), and the inner end of the steam inlet (16) is connected to the outside of the heating sheet (15), and a concentrated liquid outlet (17) and a condensed water outlet (18) are arranged at the bottom of the evaporator shell (1).

5. The anti-blocking heat pump falling-film evaporator of claim 1, wherein, The heating sheet (15) is arranged in an inclined folded plate structure connected continuously from top to bottom, and gaps are arranged between groups of heating sheets (15).

6. The anti-blocking heat pump falling-film evaporator of claim 1, wherein, The bottom of the lower connecting plate (152) is provided with a mesh plate (155), and the lower side of the mesh plate (155) is provided with a liquid discharge hole (19).

7. The anti-blocking heat pump falling-film evaporator of claim 1, wherein, The outer side of the drive shaft (24) is connected with a main gear (23), the outer side of the main gear (23) is engaged with a slave gear (25), and the inner side of the slave gear (25) is connected with a driven shaft.

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