CN211328195U

CN211328195U - Device is washed in inside counter-current cluster of MVR evaporimeter semi-sheet

Info

Publication number: CN211328195U
Application number: CN201921692049.2U
Authority: CN
Inventors: 黄伟初; 陈秀鹃; 吴徐杰; 孙鹏
Original assignee: KUNMING JINZE INDUSTRIAL CO LTD
Current assignee: KUNMING JINZE INDUSTRIAL CO LTD
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-08-25
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a device is washed in half piece inside counter-current cluster of MVR evaporimeter, including the liquid changing pond, the both sides inner wall sliding connection in liquid changing pond has filtration, and the inner wall middle part in liquid changing pond is connected with the baffle, the inner wall of baffle is connected with the exchange valve to pressing from both sides, and the other end of exchange valve has the feed liquor valve through threaded connection, the both ends outer wall connection of feed liquor valve has the liquid pump, the both sides inner wall in liquid changing pond all is equipped with the alignment jig, and the inner wall of alignment jig has the filter screen of putting to one side through the hub connection. The utility model discloses increase the circulating line in the outside and wash the pipe support, when evaporation efficiency obviously descends, can stop to transport the MVR evaporimeter and shut down the cluster and wash, the cluster is washed through washing the dirt washing with the both sides inner wall, and the circulation gets into to trading the pond in, and the manometer is adjusted in the cooperation and is balanced in both sides, keeps the slab clean, puts the filter screen to one side and after the cluster is inside through the slab, contains impurity such as dross dirt that washes out in the eluate, improves the cleaning efficiency.

Description

Device is washed in inside counter-current cluster of MVR evaporimeter semi-sheet

Technical Field

The utility model relates to a chemical mechanical pulp wastewater treatment technical field especially relates to a device is washed to half piece inside counter-current formula cluster of MVR evaporimeter.

Background

Compared with chemical pulping black liquor, the chemical pulping waste water has similar solid content composition but low solid content concentration. In order to protect the environment and realize the resource utilization of the waste water, the chemical pulping black liquor alkali recovery technology is used for treating the chemical mechanical pulping waste water at home and abroad at present, but the key for restricting the economical efficiency of the treatment technology is the evaporation efficiency and the operation cost of the low-concentration waste water. Practice proves that the Mechanical Vapor Recompression (MVR) evaporator is economic and efficient evaporation equipment for low-concentration machine pulp wastewater, only steam is introduced when the machine is started, then secondary steam generated by the Mechanical Vapor Recompression (MVR) evaporator is utilized and is recycled after being compressed by a compressor, and the thermal efficiency is very high.

In the existing serial washing device, the whole chemical-mechanical pulp wastewater contains inorganic substances such as carbohydrate, lignin, extract, alkali and the like, and also contains easily-scaling components such as fine suspended substances, calcium, magnesium, silicon and the like, so that a small amount of scaling components are inevitably brought into generated secondary steam, and the continuous accumulation of the scaling components can cause internal scaling of an evaporator sheet, so that the evaporation efficiency is sharply reduced, the operation cost is increased, and the production cannot be carried out in serious cases.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an MVR evaporator half-sheet internal counter-flow type serial washing device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a device for washing the inner part of a half piece of MVR evaporator in series comprises a liquid exchange tank, wherein the inner walls of two sides of the liquid exchange tank are connected with a filtering structure in a sliding manner, the middle part of the inner wall of the liquid exchange tank is connected with a partition plate, the inner wall of the partition plate is connected with an exchange valve in a butt clamp manner, the other end of the exchange valve is connected with a liquid inlet valve through threads, the outer walls of two ends of the liquid inlet valve are connected with liquid pumps, the inner walls of two sides of the liquid exchange tank are respectively provided with an adjusting frame, the inner wall of the adjusting frame is connected with an inclined filter screen through a shaft, the outer wall of two ends of the liquid exchange tank is connected with a connecting pipe in a butt clamp manner, the outer wall of the connecting pipe is connected with a connecting tee through threads, the inner wall of the two connecting tee is connected with an outer balance pipe in a butt clamp manner, the middle, two the butt clamp is fixed with same evaporimeter body between the washing pipe support.

Preferably, the obliquely-arranged filter screens comprise two filter screens which are clamped with each other, and the outer walls of the four sides of the two filter screens are provided with positioning insertion posts and positioning insertion holes.

Preferably, the two filter screens respectively comprise an upper frame, a lower frame and a composite layer, the composite layer is clamped between the upper frame and the lower frame, and a fixed magnetic frame is clamped between the upper frame and the lower frame.

Preferably, the composite layer comprises two acid and alkali resistant filter screens and a middle supporting steel mesh, and the two acid and alkali resistant filter screens are symmetrically distributed on the outer walls of the two sides of the middle supporting steel mesh.

Preferably, the fixed magnetic frame comprises two clamping frames and a fixed ring, and the fixed ring is clamped at the connecting ends of the two clamping frames.

Preferably, the liquid pump and the liquid inlet valve are both connected with a switch, and the switch is connected with a PLC controller through a lead.

The utility model has the advantages that:

1. this cluster is washed device snap-on in the MVR evaporimeter outside, increases the circulating line and washes the pipe support externally, when evaporation efficiency obviously descends, can stop the fortune MVR evaporimeter, then shut down the cluster and wash, the cluster is washed and is washed the dirt washing with the both sides inner wall through washing, and the circulation gets into in trading the liquid pool, and the manometer is adjusted both sides and is balanced in the cooperation, in time clears away the inside dirt layer of slab, keeps the slab clean, resumes MVR evaporation efficiency.

2. The liquid changing pool of the series washing device is provided with the filtering device, the inclined filtering net is washed in series in the plate, the washing liquid contains impurities such as washed scum scales and the like, the washed scales can be prevented from entering the inside of the evaporator plate again after filtering treatment, the cleaning efficiency is improved, meanwhile, the inner wall of the inclined filtering net is of an interlayer structure, the inner wall of the inclined filtering net is clamped and connected with the inner wall of the inclined filtering net through the magnetic frame, the scum scales are fixed in the middle of the inclined filtering net through the flocculation interlayer, the cleaning frequency is reduced, and the filtering efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a half-sheet internal counter-flow type serial washing device of an MVR evaporator provided by the present invention;

FIG. 2 is a schematic view of the inclined filter screen structure of the inside counter-flow type serial washing device of the MVR evaporator half-sheet provided by the present invention;

fig. 3 is the utility model provides a fixed magnetic frame structure sketch map of device is washed in inside counter-current cluster of MVR evaporimeter half piece.

In the figure: the device comprises a liquid exchange pool 1, an inclined filter screen 2, an adjusting frame 3, a connecting tee joint 4, an outer balance pipe 5, a washing pipe frame 6, an evaporator body 7, a pressure gauge 8, an exchange valve 9, a liquid inlet valve 10, a liquid pump 11, an upper frame 12, a composite layer 13, a positioning insertion column 14, a fixed magnetic frame 15, a lower frame 16, a fixed ring 17 and a flocculation interlayer 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an MVR evaporator half-sheet internal counter-flow type serial washing device comprises a liquid exchange tank 1, wherein the inner walls of two sides of the liquid exchange tank 1 are slidably connected with a filtering structure, the middle part of the inner wall of the liquid exchange tank 1 is connected with a partition plate, the inner wall of the partition plate is connected with a cross over valve 9 in a butt-clamp manner, the other end of the cross over valve 9 is connected with a liquid inlet valve 10 through threads, the outer walls of two ends of the liquid inlet valve 10 are connected with liquid pumps 11, the inner walls of two sides of the liquid exchange tank 1 are respectively provided with an adjusting frame 3, the inner wall of the adjusting frame 3 is connected with an inclined filter screen 2 through a shaft, the outer walls of two ends of the liquid exchange tank 1 are connected with a connecting pipe in a butt-clamp manner, the outer walls of the connecting pipes are connected with connecting tee joints 4 through threads, the inner walls of the two connecting tee joints 4, the end parts of the washing pipe frames 6 are all clamped with sealing rubber plugs, the same evaporator body 7 is clamped and fixed between the two washing pipe frames 6, the inclined filter screen 2 comprises two filter screens which are mutually clamped, and the outer walls of four sides of the two filter screens are respectively provided with a positioning inserting column 14 and a positioning inserting hole, the two filter screens respectively comprise an upper frame 12, a lower frame 16 and a composite layer 13, the composite layer 13 is clamped between the upper frame 12 and the lower frame 16, the fixed magnetic frame 15 is clamped between the upper frame 12 and the lower frame 16, the composite layer 13 comprises two acid and alkali resistant filter screens and a middle supporting steel mesh, and the two acid and alkali resistant filter screens are symmetrically distributed on the outer walls of the two sides of the middle supporting steel mesh, the fixed magnetic frame 15 comprises two clamping frames and a fixed ring 17, and fixed ring 17 joint is at the link of two joint framves, and liquid pump 11 and feed liquor valve 10 all are connected with the switch, and the switch is connected with the PLC controller through the wire.

The working principle is as follows: the serial washing device is fixed at the outer side of the MVR evaporator through the washing pipe frame 6, the outer balance pipe 5 and the washing pipe frame 6 are added at the outer part, when the evaporation efficiency is obviously reduced, the MVR evaporator can be stopped to be operated, then stopping the machine for serial washing, flushing dirt on the inner walls of two sides by serial washing, circularly entering the liquid changing pool 1, adjusting balance of two sides by matching with an upper pressure gauge 8, timely clearing away a dirt layer in the plate, keeping the plate clean, recovering MVR evaporation efficiency, after serial washing by obliquely arranging a filter screen 2 in the plate, wherein the washing liquid contains impurities such as washed scum dirt and the like, and after filtration treatment, the inner wall of the inclined filter screen 2 is of a sandwich structure and is clamped by a fixed magnetic frame 15, and the middle part of the inclined filter screen fixes scum scale by a flocculation interlayer 18, so that the cleaning frequency is reduced, and the filtering efficiency is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a device is washed in cluster of inside counter-current of MVR evaporimeter semi-sheet, includes and trades liquid pond (1), its characterized in that, the both sides inner wall sliding connection of trading liquid pond (1) has filtration, and trades the inner wall middle part of liquid pond (1) and be connected with the baffle, the inner wall of baffle is to pressing from both sides and is connected with exchange valve (9), and exchange valve (9) other end through threaded connection has feed liquor valve (10), the both ends outer wall of feed liquor valve (10) is connected with liquid pump (11), the both sides inner wall of trading liquid pond (1) all is equipped with alignment jig (3), and the inner wall of alignment jig (3) is connected with inclined filter screen (2) through the axle, the both ends outer wall of trading liquid pond (1) is to pressing from both sides and is connected with the connecting pipe, and the outer wall of connecting pipe has connection tee bend (4) through threaded connection, two the inner wall, and the inner wall middle part of outer balance pipe (5) is to pressing from both sides and is equipped with manometer (8), all be connected with between the relative one side of connecting tee bend (4) and wash pipe support (6), and the equal joint of tip that washes pipe support (6) has sealed plug, two it is fixed with same evaporimeter body (7) to pressing from both sides between washing pipe support (6).

2. The MVR evaporator half-sheet internal counter-flow type serial washing device according to claim 1, wherein the inclined filter screen (2) comprises two filter screens clamped with each other, and the outer walls of the four sides of the two filter screens are provided with positioning insertion columns (14) and positioning insertion holes.

3. The MVR evaporator half-sheet internal counter-flow serial washing device according to claim 2, wherein two filter screens respectively comprise an upper frame (12), a lower frame (16) and a composite layer (13), the composite layer (13) is clamped between the upper frame (12) and the lower frame (16), and a fixed magnetic frame (15) is clamped between the upper frame (12) and the lower frame (16).

4. The MVR evaporator half-sheet internal counter-flow type serial washing device according to claim 3, wherein the composite layer (13) comprises two acid and alkali resistant filter screens and a middle supporting steel mesh, and the two acid and alkali resistant filter screens are symmetrically distributed on the outer walls of the two sides of the middle supporting steel mesh.

5. The inside counter-flow type serial washing device of MVR evaporator half-piece according to claim 3, characterized in that, the fixed magnetic frame (15) includes two clamping frames and a fixed ring (17), and the fixed ring (17) is clamped at the connecting end of the two clamping frames.

6. The MVR evaporator half-sheet internal counter-flow serial washing device according to claim 1, wherein the liquid pump (11) and the liquid inlet valve (10) are both connected with a switch, and the switch is connected with a PLC controller through a lead.