Flue gas purification device for pickling thin plate

Abstract

The flue gas purification device comprises a bottom plate, a purification box and an alkali liquor box are arranged above the bottom plate, a flow slowing plate is fixedly arranged on the inner side of the purification box, a filter plate is installed in the purification box, an electric push rod is arranged at the center position of the filter plate, a scraper is arranged at the output end of the electric push rod, and the scraper is connected with the bottom plate. The scraper is slidably connected with the surface of the filter plate, atomizing nozzles are arranged at the top of the purification box at equal intervals, a lantern ring is arranged at the top of the alkali liquor box, a proximity switch is arranged on the side wall of the lantern ring, and a sleeve is fixedly mounted on the inner wall of the lantern ring. According to the technical scheme, the flue gas purification device for pickling the thin plate is manufactured, through the lantern ring, the proximity switch, the sleeve, the sliding rod and the magnetic block, when alkali liquor in the alkali liquor box is insufficient, a worker can be reminded to supplement the alkali liquor in time, and the situation that when the alkali liquor is insufficient, flue gas is directly discharged into the environment without being purified, and environmental pollution is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of thin plate production, in particular to a fume purification device for pickling thin plates. Background Art

[0002] Ordinary thin steel plates generally use hot-rolled strip steel with a thickness of 1.5 to 6 mm as cold-rolled blanks. The main processes include pickling, cold rolling, degreasing, annealing, leveling, shearing (cross-cutting, longitudinal cutting). If coated plates are produced, there are also electroplating, hot tinning, hot zinc coating and other coating or coating processes. The production process of cold-rolled blanks is: hot-rolled coil (raw material) - pickling - cold rolling - degreasing - annealing - leveling - shearing - finished product delivery. A large amount of acid-containing flue gas will be generated during the pickling process of thin plates. It is often necessary to purify the flue gas generated by pickling to avoid direct discharge and environmental pollution. The existing acid-containing flue gas purification device uses alkali liquid spraying for purification. This method has the problem of short contact time between flue gas and alkali liquid, and the alkali liquid can be reused twice. After the alkali liquid is purified, no collection device is set, which is easy to cause waste of resources. In the process of pumping alkali liquid, when the alkali liquid in the alkali liquid tank is insufficient, the workers cannot replenish the alkali liquid in time, which is easy to cause insufficient flue gas purification and direct discharge into the environment, causing pollution. For this purpose, we proposed a fume purification device for pickling thin plates. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a fume purification device for pickling thin plates to solve the problems raised in the above background technology.

[0004] The utility model discloses a fume purification device for pickling thin plates, comprising a bottom plate, a purification box and an alkali liquid box are arranged above the bottom plate, a slow flow plate is fixedly arranged on the inner side of the purification box, a filter plate is installed in the purification box, an electric push rod is arranged at the center of the filter plate, a scraper is arranged at the output end of the electric push rod, the scraper is slidably connected to the surface of the filter plate, atomizing nozzles are arranged at equal distances on the top of the purification box, a collar is arranged on the top of the alkali liquid box, a proximity switch is arranged on the side wall of the collar, a sleeve is fixedly installed on the inner wall of the collar, the inner wall of the sleeve is slidably connected to a slide rod, the upper part of the slide rod is connected to a magnetic block through a connecting block, and the bottom of the slide rod is fixedly connected to a floating plate.

[0005] In the above solution, legs are provided below the purification box.

[0006] In the above scheme, an air inlet is connected to one side of the purification box, an air outlet is connected to the other side of the purification box, a water outlet is provided below the purification box, valves are provided on the air inlet, air outlet and water outlet, and a liquid injection port is connected to the top of the alkali liquid box.

[0007] In the above scheme, the slow flow plates are arranged alternately up and down in the purification box, and an atomizing nozzle is respectively provided on one side of the slow flow plates.

[0008] In the above scheme, sewage outlets are provided on both sides of the purification box, and baffles are provided outside the sewage outlets and fixedly installed by fixing bolts.

[0009] In the above solution, the magnetic block matches the proximity switch.

[0010] In the above scheme, the top of the atomizing nozzle is connected to a water pump through a water pipe, the water pump is installed on the top of the alkali liquid tank, and the other end of the water pump is connected to the inside of the alkali liquid tank through a water pipe.

[0011] The advantages and beneficial effects of the utility model are as follows: the utility model provides a flue gas purification device for pickling thin plates, which can filter the purified alkali solution through filter plates, electric push rods, scrapers, sewage outlets and baffles, so as to facilitate collection and reuse; through staggered slow flow plates and atomizing nozzles, the contact time between flue gas and alkali solution can be increased to ensure the purification effect; through collars, proximity switches, sleeves, sliding rods and magnetic blocks, when the alkali solution in the alkali solution box is insufficient, workers can be reminded in time to replenish the alkali solution, so as to avoid direct discharge of flue gas into the environment without purification when the alkali solution is insufficient, thereby causing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a front view of the internal structure of the purification box of the present utility model.

[0015] Figure 3 It is a structural side view of the utility model.

[0016] Figure 4 This is a schematic diagram of the casing structure of the utility model.

[0017] In the figure: 1 bottom plate, 11 legs, 12 filter plate, 2 purification box, 21 air inlet, 22 air outlet, 23 water outlet, 24 slow flow plate, 25 electric push rod, 26 scraper, 27 sewage outlet, 28 baffle, 3 alkali liquid box, 31 floating plate, 32 liquid injection port, 33 collar, 34 proximity switch, 35 sleeve, 36 slide rod, 37 connecting block, 38 magnetic block, 4 water pump, 41 water pipe, 42 atomizing nozzle. DETAILED DESCRIPTION

[0018] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] like Figure 1-4 As shown, the utility model is a flue gas purification device for pickling thin plates, comprising a bottom plate 1, a purification box 2 and an alkali liquid box 3 are arranged above the bottom plate 1, a slow flow plate 24 is fixedly arranged on the inner side of the purification box 2, a filter plate 12 is installed in the purification box 2, an electric push rod 25 is arranged at the center position of the filter plate 12, a scraper 26 is arranged at the output end of the electric push rod 25, and the scraper 26 is slidably connected to the surface of the filter plate 12, the upper filter plate 12 can filter the purified alkali liquid, which is convenient for the subsequent reuse of the alkali liquid and reduces resource waste. When the surface of the filter plate 12 is blocked by foreign matter and affects the filtering effect, by turning on the switches of the two electric push rods 25, the electric push rod 25 can drive the scraper 26 at the output end to start moving on the surface of the filter plate 12, and the scraper 26 pushes the foreign matter on the surface of the filter plate 12 and pushes the foreign matter to both sides of the purification box 2.

[0020] Atomizing nozzles 42 are arranged at equal distances on the top of the purification box 2. The top of the atomizing nozzle 42 is connected to a water pump 4 through a water pipe 41. The water pump 4 is installed on the top of the alkali liquid tank 3. The other end of the water pump 4 is connected to the inside of the alkali liquid tank 3 through the water pipe 41. By turning on the water pump 4 switch, the water pump 4 can extract the alkali liquid inside the alkali liquid tank 3. The alkali liquid enters the atomizing nozzle 42 through the water pipe 41. The smoke after pickling is purified by spraying the atomizing nozzle 42 to prevent the smoke from being directly discharged to the outside of the air to cause environmental pollution.

[0021] The top of the alkali liquid box 3 is provided with a collar 33, the side wall of the collar 33 is provided with a proximity switch 34, the inner wall of the collar 33 is fixedly installed with a sleeve 35, the inner wall of the sleeve 35 is slidably connected to a slide bar 36, the upper part of the slide bar 36 is connected to a magnetic block 38 through a connecting block 37, and the bottom of the slide bar 36 is fixedly connected to a floating plate 31. When the alkali liquid inside the alkali liquid box 3 starts to be extracted, the alkali liquid decreases, the water level starts to drop, and the floating plate 31 can start to move downward synchronously, and the slide bar 36 connected above the floating plate 31 starts to move downward inside the sleeve 35 The top of the slide bar 36 is connected to a magnetic block 38 and starts to move downwardly on the side of the sleeve 35. When the internal alkali solution is about to be extracted, the magnetic block 38 and the proximity switch 34 are matched. The magnetic block 38 contacts the proximity switch 34 below. The proximity switch 34 can complete the passage through the contact of the magnetic block 38, so that the external alarm starts to alarm, and the workers can be reminded in time to replenish the alkali solution in the alkali solution box 3 to prevent the smoke after pickling from being continuously discharged to the outside of the environment. Because the alkali solution is not replenished in time, it causes pollution to the environment.

[0022] In the above solution, a support leg 11 is provided below the purification box 2 .

[0023] In the above scheme, an air inlet 21 is connected to one side of the purification box 2, an air outlet 22 is connected to the other side of the purification box 2, a water outlet 23 is provided at the bottom of the purification box 2, valves are provided on the air inlet 21, the air outlet 22 and the water outlet 23, and a liquid injection port 32 is connected to the top of the alkali liquid tank 3. The flue gas discharged during the pickling process of the thin plate is connected through the air inlet 21, and the air outlet 22 discharges the purified flue gas. The water outlet 23 below can collect the purified alkali liquid, and the valves provided can close the import and export in time to prevent leakage.

[0024] In the above scheme, the slow flow plates 24 are staggered up and down in the purification box 2, and an atomizing nozzle 42 is provided on each side of the slow flow plates 24. The staggered slow flow plates 24 can increase the time that the flue gas stays at the end of the atomizing nozzle 42, increase the purification time, and ensure the purification effect of the flue gas.

[0025] In the above scheme, sewage outlets 27 are opened on both sides of the purification box 2, and baffles 28 are fixedly installed by fixing bolts on the outside of the sewage outlet 27. When the scraper 26 pushes the foreign matter to the sewage outlet 27, the baffle 28 is removed by opening the fixing bolts, and the foreign matter is discharged outward through the sewage outlet 27, so that the foreign matter is collected in time.

[0026] Working principle:

[0027] The flue gas purification device for pickling thin plates, when in operation, connects the flue gas in the pickling process of the thin plates from the air inlet 21. After the connection is completed, the water pump 4 is turned on to extract the alkali solution in the alkali solution tank 3. The alkali solution is sprayed to the flue gas for purification through the atomizing nozzle 42. The alkali solution is filtered by the filter plate 12 and retained at the bottom of the purification box 2. When the alkali solution in the alkali solution tank 3 is about to be extracted, the magnetic block 38 on the side contacts the proximity switch 34, which can turn on the external alarm to start the alarm, and can promptly remind the workers to replenish the alkali solution to avoid the flue gas being directly discharged to the outdoors when the alkali solution is missing, causing environmental pollution.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fume purification device for pickling thin plates, comprising a bottom plate (1), characterized in that: A purification box (2) and an alkali liquid box (3) are provided above the bottom plate (1), a slow flow plate (24) is fixedly provided inside the purification box (2), a filter plate (12) is installed inside the purification box (2), an electric push rod (25) is provided at the center of the filter plate (12), a scraper (26) is provided at the output end of the electric push rod (25), and the scraper (26) is slidably connected to the surface of the filter plate (12), an atomizing nozzle (42) is equidistantly provided on the top of the purification box (2), a collar (33) is provided on the top of the alkali liquid box (3), a proximity switch (34) is provided on the side wall of the collar (33), a sleeve (35) is fixedly installed on the inner wall of the collar (33), and a slide rod (36) is slidably connected to the inner wall of the sleeve (35), the upper part of the slide rod (36) is connected to a magnetic block (38) through a connecting block (37), and the bottom of the slide rod (36) is fixedly connected to a floating plate (31).

2. A fume purification device for pickling thin plates according to claim 1, characterized in that: Support legs (11) are provided below the purification box (2).

3. A fume purification device for pickling thin plates according to claim 1, characterized in that: An air inlet (21) is connected to one side of the purification box (2), an air outlet (22) is connected to the other side of the purification box (2), a water outlet (23) is provided below the purification box (2), valves are provided on the air inlet (21), the air outlet (22) and the water outlet (23), and a liquid injection port (32) is connected to the top of the alkali liquid box (3).

4. A fume purification device for pickling thin plates according to claim 1, characterized in that: The slow flow plates (24) are arranged in an up-and-down staggered manner in the purification box (2), and one side of each slow flow plate (24) is provided with an atomizing nozzle (42).

5. A fume purification device for pickling thin plates according to claim 1, characterized in that: Sewage outlets (27) are provided on both sides of the purification box (2), and baffles (28) are provided outside the sewage outlet (27) and fixedly installed by fixing bolts.

6. A fume purification device for pickling thin plates according to claim 1, characterized in that: The magnetic block (38) matches the proximity switch (34).

7. A fume purification device for pickling thin plates according to claim 1, characterized in that: The top of the atomizing nozzle (42) is connected to a water pump (4) through a water pipe (41), the water pump (4) is installed on the top of the alkali liquid tank (3), and the other end of the water pump (4) is connected to the inside of the alkali liquid tank (3) through the water pipe (41).

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