CN217570210U

CN217570210U - Cleaning equipment for pickling cold-rolled strip steel

Info

Publication number: CN217570210U
Application number: CN202221505315.8U
Authority: CN
Inventors: 王金鹏; 逯坤鹏; 陈浩; 李宁; 孟兵
Original assignee: Bengang Steel Plates Co Ltd
Current assignee: Bengang Steel Plates Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-10-14
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a cleaning equipment for cold-rolled steel strip pickling, including first overflow launder, the fixed intercommunication in the back of first overflow launder has the heating basin, the fixed intercommunication in the back of heating basin has the second overflow launder, the fixed intercommunication in the back of second overflow launder has the spray rinsing groove, the bottom of first overflow launder inner wall and the equal fixedly connected with division wall in bottom of second overflow launder inner wall, four support stones of bottom fixedly connected with of heating basin inner wall, belted steel has been placed to the top of four support stones, the equal fixed mounting in top of second overflow launder both sides has the cylinder, the bottom of two cylinders is rotated through first bearing and is connected with crowded dry last roller, the utility model relates to a cleaning equipment for cold-rolled steel strip pickling possesses the cleaning function to raw materials belted steel simultaneously, to the weak acid heating function of raw materials belted steel, to the cleaning function of raw materials belted steel, to the rinsing function of the acidizing fluid of getting rid of the back in the entrance.

Description

Cleaning equipment for cold-rolled strip steel acid pickling

Technical Field

The utility model relates to a cleaning equipment field specifically is a cleaning equipment for cold-rolled strip steel pickling.

Background

The acid cleaning is a previous process of cold-rolled strip steel, and is to remove iron scales from uncoiled hot-rolled strip steel through an acid cleaning tank and remove residual acid liquor on the surface through rinsing water in a rinsing tank.

However, the acid liquor cleanliness of the existing pickling device is not high enough, dust carried by strip steel raw materials cannot be removed in advance, and strip steel cannot be preheated before entering a pickling tank, so that a cleaning device for cold-rolled strip steel pickling is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cleaning equipment for cold-rolled strip steel pickling to solve the current pickling device acid liquor cleanliness who proposes among the above-mentioned background art and be high inadequately, can not detach the dust that the belted steel raw materials carried in advance, the problem that can not preheat before the belted steel gets into the descaling bath.

In order to achieve the above object, the utility model provides a following technical scheme: the cleaning equipment for pickling cold-rolled steel strips comprises a first overflow groove, wherein a heating water groove is fixedly communicated with the back of the first overflow groove, a second overflow groove is fixedly communicated with the back of the heating water groove, a spraying and washing groove is fixedly communicated with the back of the second overflow groove, the bottom end of the inner wall of the first overflow groove and the bottom end of the inner wall of the second overflow groove are fixedly connected with a partition wall, four supporting blocks are fixedly connected with the bottom end of the inner wall of the heating water groove, the steel strips are placed above the four supporting blocks, acid inlets are formed in two ends of two sides of the top of the heating water groove, air cylinders are fixedly mounted at the tops of two sides of the second overflow groove, the bottoms of the two air cylinders are rotatably connected with upper squeezing rollers through first bearings, and two sides of the middle part of the inner wall of the second overflow groove are rotatably connected with lower squeezing rollers through second bearings.

When the cleaning device for cold-rolled strip steel acid pickling is used, the device has the functions of cleaning raw material strip steel, heating the raw material strip steel, washing the raw material strip steel with weak acid and rinsing reversed strip steel at an inlet to remove acid liquor.

As an optimal technical scheme of the utility model, the equal fixedly connected with injection pipe in both sides at both sides and the inner wall top of spray rinsing groove inner wall bottom, the fixed surface intercommunication of injection pipe has twelve atomizing nozzle, four the surface difference fixedly connected with of acid inlet advances two acid pipes, two the bottom mounting intercommunication of advancing acid pipe has the heating water tank, the bottom fixed mounting who advances acid pipe has the circulating pump, the middle part fixed mounting who advances acid pipe has the heater, the fixed intercommunication in one side of first overflow launder bottom has the backward flow to be responsible for, the fixed intercommunication in opposite side of first overflow launder bottom has the acid return pipe, the bottom that the backward flow was responsible for and the fixed intercommunication of heating water tank, the bottom mounting intercommunication that adds the water tank has first backward flow branch pipe, the fixed intercommunication in one side of second overflow launder bottom has second backward flow branch pipe, the bottom of first backward flow branch pipe all is responsible for fixed intercommunication with the backward flow. The hot water is transported and returned through the pipeline.

As the utility model discloses a preferred technical scheme, the fixed intercommunication in spray rinsing groove bottom one side has the blow off pipe, four the fixed intercommunication in one end of injection pipe has the water pipe, the bottom of water pipe and the fixed intercommunication in bottom of one of them acid inlet pipe, the middle part fixed mounting of water pipe has first control valve, four the fixed surface intercommunication of injection pipe has compressed air pipe, compressed air pipe's middle part fixed mounting has the second control valve. The input of compressed air and hot water is controlled by two control valves.

As a preferred technical scheme of the utility model, the import has been seted up at the spray rinsing groove back, the both sides of import inner wall are rotated through the third bearing and are connected with the backing roll, belted steel is located the top of backing roll and wringing between last roller and the wringing lower roll. And supporting the position of the strip steel by a supporting roller.

As an optimal technical scheme of the utility model, the displacement mouth is seted up to the corresponding crowded removal orbit of going up the roller in second overflow launder both sides, acid-proof baffle is all installed at the both ends of crowded dry both ends of going up the roller and the both ends of crowded dry lower roll. The acid-proof baffle plate is arranged to reduce the damage of the wringing roller.

As an optimized technical proposal of the utility model, twelve spray nozzles on both sides of the surface of the spray pipe incline 45 degrees from left to right respectively. The atomizing nozzle can remove dust on the steel strip towards two sides.

As a preferred technical proposal of the utility model, the heating water tank adopts the Anshan rock material, and the front of the first overflow tank is fixedly communicated with a pickling tank. The anshan rock material has a good acid-resistant effect.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through a relatively independent cleaning system, the cleanliness of acid liquor is improved, the on-machine service time of the graphite heater is prolonged, the maintenance cost is saved, the roasting furnace of the acid regeneration unit works smoothly, the design capacity of acid regeneration is guaranteed, and the capacity of the acid washing unit is also guaranteed;

2. the device has the functions of cleaning the raw material strip steel, heating the raw material strip steel, washing the raw material strip steel with weak acid, rinsing the reversed strip steel at an inlet to remove acid liquor, cleaning the acid liquor, reducing the maintenance cost of a graphite heater, improving the production efficiency of an acid regeneration and pickling unit, and preheating the raw material strip steel to keep the pickling speed.

Drawings

FIG. 1 is a side cross-sectional view of the present invention;

FIG. 2 is a side sectional view of the heating water tank of the present invention;

FIG. 3 is a front cross-sectional view of a second isopipe of the present invention;

fig. 4 is a front cross-sectional view of the spray tank of the present invention.

In the figure: 1. a first overflow tank; 2. a heating water tank; 3. a second overflow tank; 4. a spray washing tank; 5. an acid inlet; 6. an acid inlet pipe; 7. a heater; 8. a circulation pump; 9. a partition wall; 10. a main reflux pipe; 11. returning an acid pipe; 12. heating a water tank; 13. a cylinder; 14. squeezing the upper roll; 15. squeezing the lower roll; 16. an acid-proof baffle plate; 17. a displacement port; 18. an inlet; 19. a support roller; 20. an injection pipe; 21. an atomizing nozzle; 22. a water pipe; 23. a first control valve; 24. a compressed air pipe; 25. a blow-off pipe; 26. a first return branch pipe; 27. a second return leg; 28. a second control valve; 29. supporting the stone block; 30. strip steel; 31. a pickling tank.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, the utility model provides a cleaning equipment for cold-rolled steel strip pickling, including first overflow launder 1, the fixed intercommunication in back of first overflow launder 1 has heating basin 2, the fixed intercommunication in back that heats basin 2 has second overflow launder 3, the fixed intercommunication in back of second overflow launder 3 has spray rinsing groove 4, the bottom of first overflow launder 1 inner wall and the equal fixedly connected with division wall 9 in bottom of second overflow launder 3 inner wall, heat four support stone blocks 29 of the bottom fixedly connected with of basin 2 inner wall, belted steel 30 has been placed to the top of four support stone blocks 29, acid inlet 5 has all been seted up at the both ends that heat 2 top both sides of basin, the equal fixedly mounted in top of second overflow launder 3 both sides has cylinder 13, the bottom of two cylinder 13 rotates through first bearing and is connected with wringing upper roll 14, the both sides at 3 inner wall middle part of second overflow launder rotate through the second bearing and are connected with wringing lower roll 15, reduce the liquid that belted steel 30 surface carried.

When the device is used, the strip steel 30 is squeezed by the squeezing upper roller 14, so that the condition that spray washing water is brought into the heating water tank 2 is prevented, then the strip steel 30 enters the heating water tank 2 after passing through the second overflow tank 3, and in the heating water tank 2, the strip steel 30 is heated to 50 ℃ from-12 ℃, and meanwhile, the strip steel 30 is further cleaned in the heating water tank 2;

both sides of the bottom of the inner wall of the spray washing tank 4 and both sides of the top of the inner wall are fixedly connected with spray pipes 20, the surfaces of the spray pipes 20 are fixedly communicated with twelve atomizing nozzles 21, the surfaces of four acid inlets 5 are respectively fixedly connected with two acid inlet pipes 6, the bottom ends of the two acid inlet pipes 6 are fixedly communicated with a heating water tank 12, the bottom of the acid inlet pipe 6 is fixedly provided with a circulating pump 8, the middle part of the acid inlet pipe 6 is fixedly provided with a heater 7, one side of the bottom end of a first overflow trough 1 is fixedly communicated with a main return pipe 10, the other side of the bottom end of the first overflow trough 1 is fixedly communicated with an acid return pipe 11, the bottom end of the main return pipe 10 is fixedly communicated with the heating water tank 12, the bottom end of a heating water trough 2 is fixedly communicated with a first return branch pipe 26, one side of the bottom end of a second overflow trough 3 is fixedly communicated with a second return branch pipe 27, the bottom ends of the second branch return pipes 27 of the bottom end of the first return branch pipe 26 are all fixedly communicated with the main return pipe 10, one side of the bottom end of the spray washing tank 4 is fixedly communicated with a sewage discharge pipe 25, one end of the four spray pipes 20 is fixedly communicated with a water pipe 22, the bottom end of one strip steel inlet pipe 6 of the water pipe 22, the middle part of the main return pipe is fixedly provided with a first return pipe 22, the middle part of the first branch pipe 22 is fixedly communicated with a compressed air pipe 24, the first compressed air pipe 24, the compressed air pipe 24 for controlling valve 24, and a compressed air pipe 24 for controlling the compressed air pipe 24 is fixedly arranged for controlling the surface of the compressed air pipe 24;

when the device is used, the second control valve 28 is opened, the atomizing nozzles 21 in the spray washing tank 4 are communicated with compressed air, the first control valve 23 is opened, the atomizing nozzles 21 are communicated with heated water, the four groups of atomizing nozzles 21 spray the upper surface and the lower surface of the strip steel 30, dust on the surface of the strip steel 30 falls into the spray washing tank 4 along with the spray washing water, and enters an on-site sewage pit through a sewage discharge pipe 25 of the spray washing tank 4;

the back of the spray washing tank 4 is provided with an inlet 18, two sides of the inner wall of the inlet 18 are rotatably connected with a supporting roller 19 through a third bearing, a strip steel 30 is positioned between the top end of the supporting roller 19 and the upper wringing roller 14 and the lower wringing roller 15, two sides of the second overflow tank 3 are provided with displacement ports 17 corresponding to the moving track of the upper wringing roller 14, two ends of the upper wringing roller 14 and two ends of the lower wringing roller 15 are both provided with an acid-proof baffle 16, twelve atomizing nozzles 21 on two sides of the surface of the spray pipe 20 are respectively inclined at 45 degrees left and right, the heating water tank 2 adopts a saddle rock material, the front of the first overflow tank 1 is fixedly communicated with a pickling tank 31 for pickling the strip steel 30;

when the device is used, heated water extruded when the strip steel 30 passes through the first overflow groove 1 falls into the backflow main pipe 10 and flows into the heating water tank 12, the strip steel 30 enters the pickling tank 31 at a clean surface and an initial temperature of 50 ℃, the strip steel is heated to 82 ℃ in the pickling tank 31, so that the strip steel 30 is cleaned and preheated before entering acid liquor, the cleaning of the acid liquor is realized, the temperature drop of the strip steel 30 in the pickling tank 31 is avoided, the acid-proof baffles 16 are arranged at the two ends of the squeezing roller, the service life of the roller is prolonged, the saddle rock material adopted by the heating water tank 2 has good acid-proof capacity, and the atomizing nozzles 21 at the two sides are respectively inclined 45 left and right so as to blow dust on the strip steel 30 to the two sides.

When in use, the utility model relates to a cleaning device for cold-rolled strip steel acid cleaning, when in use, the second control valve 28 is opened, the atomizing nozzle 21 in the spray tank 4 is communicated with compressed air, the first control valve 23 is opened, heating water is communicated to the atomizing nozzle 21, the four groups of atomizing nozzles 21 spray the upper and lower surfaces of strip steel 30, the dust on the surface of the strip steel 30 falls into the spray tank 4 along with the spray water, the strip steel enters a field sewage pit through the blow-off pipe 25 of the spray tank 4, the strip steel 30 is squeezed by the squeezing upper roller 14 to prevent the spray water from being brought into the heating water tank 2, then the strip steel 30 passes through the second overflow groove 3 and then enters the heating water tank 2, in the heating water tank 2, the strip steel 30 is heated to 50 ℃ from-12 ℃, meanwhile, the strip steel 30 is further cleaned in the heating water tank 2, the heating water extruded when the strip steel 30 passes through the first overflow groove 1 flows into the reflux main pipe 10 to flow into the heating water tank 12, the strip steel 30 enters the pickling tank 31 with a clean surface and an initial temperature of 50 ℃, is heated to 82 ℃ in the pickling tank 31, so that the strip steel 30 finishes cleaning and preheating before entering acid liquor, the cleaning of the acid liquor is realized, the temperature drop of the strip steel 30 generated in the pickling tank 31 is avoided, after the heating water tank 2 is filled, when the liquid level of the heating water tank 12 is lower than 20 percent, flushing water can be supplemented to the heating water tank 12 through the flushing water tank, when the liquid level of the heating water tank 12 reaches 50 percent, the water supplementing is stopped, when a unit stops for a period of time, the strip steel 30 staying at a rinsing section generates water rust, in order to remove the water rust, before the unit operates, the strip steel 30 in an operation process section moves backwards, the upper roll 14 is squeezed to fall down to clamp the strip steel 30, the strip steel 30 backwards enables the water rust to enter subsequent pickling and be removed by the pickling liquor, and simultaneously the strip steel 30 in the pickling tank 31 exits the pickling tank 31 with the acid liquor and enters the heating water tank 2, the strip steel 30 is rinsed in the heating water tank 2 to remove surface acid liquor, the strip steel 30 enters the second overflow tank 3, the strip steel is squeezed to be dry by the squeezing upper roller 14 in the second overflow tank 3, squeezed heating water returns to the heating water tank 12 through the second backflow branch pipe 27, the strip steel 30 moves to reverse until the scale is completely removed, and meanwhile, rinsing of the reversed strip steel 30 carrying acid liquor is completed in the heating water tank 2.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A cleaning equipment for cold-rolled strip steel pickling comprises a first overflow trough (1) and is characterized in that: the back of the first overflow groove (1) is fixedly communicated with a heating water groove (2), the back of the heating water groove (2) is fixedly communicated with a second overflow groove (3), the back of the second overflow groove (3) is fixedly communicated with a spray washing groove (4), the bottom end of the inner wall of the first overflow groove (1) and the bottom end of the inner wall of the second overflow groove (3) are fixedly connected with a partition wall (9), four supporting blocks (29) are fixedly connected with the bottom end of the inner wall of the heating water groove (2), strip steel (30) are placed above the four supporting blocks (29), acid inlets (5) are formed in two ends of two sides of the top of the heating water groove (2), air cylinders (13) are fixedly mounted on two sides of the second overflow groove (3), the bottom ends of the air cylinders (13) are rotatably connected with upper squeezing overflow grooves (14) through first bearings, and two sides of the middle part of the inner wall of the second overflow groove (3) are rotatably connected with lower squeezing rollers (15) through second bearings.

2. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 1, wherein: the spraying and washing device is characterized in that spraying pipes (20) are fixedly connected to two sides of the bottom of the inner wall of the spraying and washing tank (4) and two sides of the top of the inner wall, twelve atomizing nozzles (21) are fixedly communicated with the surface of each spraying pipe (20), two acid inlet pipes (6) are fixedly connected to the surfaces of four acid inlet openings (5) respectively, heating water tanks (12) are fixedly communicated with the bottom ends of the two acid inlet pipes (6), circulating pumps (8) are fixedly installed at the bottoms of the acid inlet pipes (6), heaters (7) are fixedly installed in the middle of the acid inlet pipes (6), backflow branch pipes (10) are fixedly communicated with one side of the bottom end of the first overflow tank (1), backflow pipes (11) are fixedly communicated with the other side of the bottom end of the first overflow tank (1), the bottom end of the backflow main pipe (10) is fixedly communicated with the heating water tanks (12), first backflow branch pipes (26) are fixedly communicated with the bottom end of the heating water tank (2), second backflow branch pipes (27) are fixedly communicated with the bottom end of the second backflow branch pipe (26) of the bottom end of the second overflow tank (3).

3. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 2, wherein: fixed intercommunication in spray rinsing groove (4) bottom one side has blow off pipe (25), four the fixed intercommunication in one end of injection pipe (20) has water pipe (22), the bottom of water pipe (22) and the fixed intercommunication in bottom of one of them acid inlet pipe (6), the middle part fixed mounting of water pipe (22) has first control valve (23), four the fixed surface intercommunication of injection pipe (20) has compressed air pipe (24), the middle part fixed mounting of compressed air pipe (24) has second control valve (28).

4. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 1, wherein: the back of the spray washing tank (4) is provided with an inlet (18), two sides of the inner wall of the inlet (18) are rotatably connected with a supporting roller (19) through a third bearing, and the strip steel (30) is located between the top end of the supporting roller (19) and the upper wringing roller (14) and the lower wringing roller (15).

5. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 1, wherein: and displacement ports (17) are formed in the two sides of the second overflow groove (3) corresponding to the moving tracks of the upper squeezing roller (14), and acid-proof baffles (16) are arranged at the two ends of the upper squeezing roller (14) and the two ends of the lower squeezing roller (15).

6. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 2, wherein: twelve atomizing nozzles (21) on two sides of the surface of the injection pipe (20) are respectively inclined at an angle of 45 degrees from left to right.

7. The cleaning apparatus for pickling of cold rolled steel strip as claimed in claim 1, wherein: the heating water tank (2) is made of a anshan rock material, and the front surface of the first overflow tank (1) is fixedly communicated with an acid washing tank (31).