CN110938828A - Strip steel cleaning device - Google Patents
Strip steel cleaning device Download PDFInfo
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- CN110938828A CN110938828A CN201911268322.3A CN201911268322A CN110938828A CN 110938828 A CN110938828 A CN 110938828A CN 201911268322 A CN201911268322 A CN 201911268322A CN 110938828 A CN110938828 A CN 110938828A
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- heat exchanger
- hot water
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- water
- strip steel
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a strip steel pickling device which comprises an unreeling machine, a pickling tank, a reeling machine and a hot water circulating system, wherein the hot water circulating system comprises a hot water tank and a first water pump, the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and the outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater; the outlet pipeline of the pickling tank is connected with an acid pump, the outlet end of the acid pump is connected with a circulating pipe, and the circulating pipe is connected with the first heat exchanger and the second heat exchanger and then is connected with the inlet pipeline of the pickling tank. The strip steel acid pickling device provided by the invention adopts two water heaters which are arranged in series, and the hot water is heated to a proper temperature twice, so that the hot water heating operation is simpler and safer.
Description
Technical Field
The invention relates to the technical field of strip steel processing equipment, in particular to a strip steel cleaning device.
Background
In the strip steel pickling process, the pickling solution needs to be heated by using circulating hot water so as to maintain the pickling solution within a certain temperature range, and in the prior art, a steam boiler is usually adopted to generate steam to heat the circulating hot water. However, the steam boiler belongs to a pressure vessel and has certain safety hazards. Therefore, it is necessary to provide a strip steel cleaning device which is provided with a hot water circulating system which is convenient to operate and safe to operate to heat pickling solution, so that potential safety hazards in the operation process are reduced.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a strip steel cleaning device, and aims to solve the technical problem that circulating hot water is heated by a steam boiler in the strip steel cleaning device in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a strip steel pickling device comprises an unreeling machine, a pickling tank, a reeling machine and a hot water circulating system which are sequentially arranged, wherein the hot water circulating system comprises a hot water tank and a first water pump connected with the hot water tank, the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and the outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater; the outlet pipeline of the pickling tank is connected with an acid pump, the outlet end of the acid pump is connected with a circulating pipe, and the circulating pipe is connected with the inlet pipeline of the pickling tank after being connected with the first heat exchanger and the second heat exchanger.
In the strip steel pickling device, a first branch pipe is connected with two first heat exchangers in parallel, outlet pipelines of the two first heat exchangers are connected to a water inlet pipe of a water heater in parallel, and an inlet pipeline of each first heat exchanger is provided with a first inlet valve; the second branch pipe is connected with two second heat exchangers in parallel, outlet pipelines of the two second heat exchangers are connected to a water inlet pipe of the water heater in parallel, and an inlet pipeline of each second heat exchanger is provided with a second inlet valve; the two first heat exchangers are connected in parallel with the circulation pipe, and the two second heat exchangers are connected in parallel with the circulation pipe.
In the strip steel pickling device, the two first heat exchangers and the two second heat exchangers are graphite heat exchangers.
In the strip steel pickling device, the first water pump and the second water pump are centrifugal pumps.
In the strip steel pickling device, two water heaters have the same specification, each water heater comprises a shell, a burner, a hot water tank arranged in the shell, and a water inlet pipe and a water outlet pipe which are connected with the hot water tank, wherein a steam pipe is arranged at the top of the hot water tank and extends upwards out of the shell; the shell is also provided with a third heat exchanger, an exhaust fan and an induced draft fan; an inlet pipeline of the exhaust fan is communicated with the top of the inner cavity of the shell, and an outlet pipeline of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger; the outlet end of the first channel of the third heat exchanger is connected with a first exhaust pipeline; the inlet end of a second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan through a second exhaust pipeline, and an outlet pipeline of the induced draft fan is connected to the combustor.
In the strip steel pickling device, the combustor is connected with two groups of combustion nozzles, and the two groups of combustion nozzles are respectively positioned on two sides of the hot water tank.
In the strip steel pickling device, the side wall of the hot water tank is made of refractory materials.
Has the advantages that:
compared with the prior art, the strip steel cleaning device provided by the invention has the advantages that two water heating furnaces are arranged in series, and hot water is heated to a proper temperature twice, so that the situation that a steam boiler is adopted for heating in the prior art is avoided, and the hot water heating operation is simpler and safer. Furthermore, two first heat exchangers are arranged in parallel, and two second heat exchangers are arranged in parallel, so that the standby function is achieved, and the hot water circulation quantity can be conveniently adjusted.
Drawings
FIG. 1 is a schematic diagram of the operation of the strip steel cleaning device provided by the invention.
FIG. 2 is a schematic diagram of the operation of a hot water circulation system in the strip steel cleaning device provided by the invention.
FIG. 3 is a schematic diagram of a structure of a water heater in the strip steel cleaning device provided by the invention.
Detailed Description
The invention provides a strip steel cleaning device, which is further described in detail below by referring to the accompanying drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, the present invention provides a strip steel cleaning apparatus. In the drawings, some, not all valves are schematically shown. The flow direction of the wash solution is shown by the dashed arrows in fig. 1, and the flow direction of the circulating hot water is shown by the solid arrows in fig. 2.
A strip steel pickling device comprises an unreeling machine 91, a pickling tank 92, a reeling machine 93 and a hot water circulating system which are sequentially arranged, wherein the hot water circulating system comprises a hot water tank 1 and a first water pump 2 connected with the hot water tank, the outlet end of the first water pump is sequentially connected with two hot water furnaces 3 and a second water pump 4, and the outlet pipeline of the second water pump 4 is connected with a first branch pipe 51 and a second branch pipe 52; the first branch pipe 51 is connected with at least one first heat exchanger 61, an outlet pipe of the first heat exchanger 61 is connected to an inlet pipe of the hot water boiler 1, the second branch pipe 52 is connected with at least one second heat exchanger 52, and an outlet pipe of the second heat exchanger 52 is connected to an inlet pipe 321 of the hot water boiler 1. The outlet pipeline 94 of the pickling tank 92 is connected with an acid pump 95, the outlet end of the acid pump 95 is connected with a circulating pipe 96, and the circulating pipe 96 is connected with the first heat exchanger and the second heat exchanger and then is connected with an inlet pipeline 97 of the pickling tank.
The structures of the unreeling machine, the reeling machine and the pickling tank are the prior art and are not the invention points of the invention, so the specific structures are not shown in the attached drawings. Furthermore, the figures only show some valves schematically and not all valves, since the necessary valves in the piping are conventional per se.
Further, the first branch pipe 51 is connected with two first heat exchangers 61 in parallel, outlet pipes of the two first heat exchangers 61 are connected to a water inlet pipe of the water heater 1 in parallel, and an inlet pipe of each first heat exchanger 61 is provided with a first inlet valve 71; the second branch pipe 52 is connected with two second heat exchangers 62 in parallel, outlet pipes of the two second heat exchangers 62 are connected to a water inlet pipe of the water heater 1 in parallel, and an inlet pipe of each second heat exchanger 62 is provided with a second inlet valve 72. The two first heat exchangers 61 are connected in parallel with the circulation pipe 96, and the two second heat exchangers 62 are connected in parallel with the circulation pipe 96. The two first heat exchangers and the second heat exchanger are arranged in parallel, so that the standby function of the heat exchangers is achieved, and the normal operation of a hot water circulating system cannot be influenced even if one first heat exchanger or one second heat exchanger needs to be overhauled; the number of heat exchangers actually put into use can also be selected to adjust the amount of hot water circulation.
Further, the two first heat exchangers 61 and the two second heat exchangers 62 are both graphite heat exchangers. The graphite heat exchanger has good anti-corrosion effect, can be suitable for heat exchange of selected washing liquid and keeps long service life.
Further, the first water pump 2 and the second water pump 4 are both centrifugal pumps.
Preferably, the two water heaters 3 have the same specification, each water heater 3 comprises a housing 31, a burner (not shown), a hot water tank 32 disposed in the housing, and a water inlet pipe 321 and a water outlet pipe 322 connected to the hot water tank, and a steam pipe 323 is disposed on the top of the hot water tank, and the steam pipe 323 extends upward out of the housing; the shell is also provided with a third heat exchanger 34, an exhaust fan 35 and an induced draft fan 36; the inlet pipe 351 of the exhaust fan is communicated with the top of the inner cavity of the shell, and the outlet pipe 352 of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger 34; the outlet end of the first passage of the third heat exchanger is connected to a first exhaust duct 3412; the inlet end of the second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan 36 through a second exhaust duct 3422, and an outlet duct 362 of the induced draft fan is connected to a burner for burning natural gas. Since the burner itself is prior art, the specific structure of the burner is not shown in the drawings, only a schematic view of the burner tip 33 thereof is shown. In practical applications, the casing 31 is usually made of a heat insulating material, so that the heat in the casing is prevented from being dissipated to the surrounding environment through the casing, and of course, a heat insulating layer may be disposed outside the casing to achieve the purpose of heat insulation. The side walls of the hot water tank are typically made of a refractory material.
In practice, as shown in fig. 1, the steam pipes 323 of the two hot water furnaces are generally connected to the pickling tank, i.e., a small amount of steam generated during the operation of the hot water furnaces can be used to heat the pickling solution; in addition, the outlet end of the first channel of the third heat exchanger is connected with the first exhaust pipe 3412, and can also be connected to the pickling tank, that is, the exhaust gas after the combustion of the natural gas is also used for heating the pickling solution, so that the purposes of energy conservation and environmental protection are achieved.
When the water heater actually operates, the burner is connected with an external natural gas hot pipeline to ignite the burner; the induced draft fan and the exhaust fan are started, the waste gas generated by natural gas in the shell has certain waste heat, the waste gas is pumped to the heat exchanger by the exhaust fan to be in air heat exchange, then the waste gas is discharged from the first exhaust pipeline of the third heat exchanger, and the air is pumped to the combustor by the induced draft fan after being heated in the heat exchanger to serve as combustion air, so that the combustion effect of the natural gas is improved. Even a small amount of steam generated during the operation of the water heater can be discharged through the steam pipe, in other words, the water heater is a normal pressure device rather than a pressure vessel.
Further, the combustor is connected with two groups of burners 33, and the two groups of burners are respectively located on two sides of the hot water tank.
Further, the side wall of the hot water tank 32 is made of a refractory material.
The following brief description is made on the working principle: (1) placing the coiled strip steel to be pickled on an unreeling machine, leading one end of the strip steel out of the unreeling machine and penetrating through a pickling device, and then connecting the strip steel with a reeling machine; the strip steel is rolled after the rolling machine runs, and the strip steel is pickled when passing through the pickling device, so that the surface of the strip steel is cleaner. And (2) as shown by solid arrows in fig. 2, hot water in the hot water tank is pumped by the first water pump to the first hot water furnace to be heated and heated, then flows into the second hot water furnace to be heated and heated again, and is pumped by the second water pump to be branched into the first branch pipe and the second branch pipe, the hot water in the first branch pipe returns to the hot water tank after passing through the first heat exchanger, and the hot water in the second branch pipe returns to the hot water tank after passing through the second heat exchanger, so that hot water circulation is formed. (3) As shown by the dotted arrows in fig. 1, the pickling solution in the strip pickling apparatus (not shown) is returned to the strip pickling apparatus again after the temperature of the pickling solution is raised by heat exchange between the first heat exchanger and the second heat exchanger, so that the pickling solution is maintained within a certain temperature range.
Through the analysis, the strip steel suspension device provided by the invention has the following advantages: the two water heating furnaces are connected in series, and the hot water is heated to a proper temperature twice, so that the situation that a steam boiler is adopted for heating in the prior art is avoided, and the hot water heating operation is simpler and safer. And (2) furthermore, two first heat exchangers are arranged in parallel, and two second heat exchangers are arranged in parallel, so that the standby function is realized, and the hot water circulation quantity can be conveniently adjusted.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (7)
1. A strip steel pickling device comprises an unreeling machine, a pickling tank, a reeling machine and a hot water circulating system which are sequentially arranged, and is characterized in that the hot water circulating system comprises a hot water tank and a first water pump connected with the hot water tank, the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and the outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater; the outlet pipeline of the pickling tank is connected with an acid pump, the outlet end of the acid pump is connected with a circulating pipe, and the circulating pipe is connected with the inlet pipeline of the pickling tank after being connected with the first heat exchanger and the second heat exchanger.
2. The strip steel pickling device according to claim 1, wherein the first branch pipe is connected with two first heat exchangers in parallel, outlet pipelines of the two first heat exchangers are connected with a water inlet pipe of a water heater in parallel, and an inlet pipeline of each first heat exchanger is provided with a first inlet valve; the second branch pipe is connected with two second heat exchangers in parallel, outlet pipelines of the two second heat exchangers are connected to a water inlet pipe of the water heater in parallel, and an inlet pipeline of each second heat exchanger is provided with a second inlet valve; the two first heat exchangers are connected in parallel with the circulation pipe, and the two second heat exchangers are connected in parallel with the circulation pipe.
3. The strip steel pickling apparatus as claimed in claim 2, wherein the two first heat exchangers and the two second heat exchangers are graphite heat exchangers.
4. The strip steel pickling apparatus as claimed in claim 3, wherein the first water pump and the second water pump are centrifugal pumps.
5. The strip steel pickling apparatus according to claim 1, wherein the two hot water furnaces are identical in size, each hot water furnace comprises a housing, a burner, a hot water tank disposed in the housing, and a water inlet pipe and a water outlet pipe connected to the hot water tank, and a steam pipe is disposed on the top of the hot water tank and extends upward out of the housing; the shell is also provided with a third heat exchanger, an exhaust fan and an induced draft fan; an inlet pipeline of the exhaust fan is communicated with the top of the inner cavity of the shell, and an outlet pipeline of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger; the outlet end of the first channel of the third heat exchanger is connected with a first exhaust pipeline; the inlet end of a second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan through a second exhaust pipeline, and an outlet pipeline of the induced draft fan is connected to the combustor.
6. The strip steel pickling device according to claim 5, wherein two groups of burners are connected to the burners, and the two groups of burners are respectively located on two sides of the hot water tank.
7. The strip steel pickling apparatus as claimed in claim 5, wherein the side wall of the hot water tank is made of a refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268322.3A CN110938828A (en) | 2019-12-11 | 2019-12-11 | Strip steel cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268322.3A CN110938828A (en) | 2019-12-11 | 2019-12-11 | Strip steel cleaning device |
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| Publication Number | Publication Date |
|---|---|
| CN110938828A true CN110938828A (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911268322.3A Pending CN110938828A (en) | 2019-12-11 | 2019-12-11 | Strip steel cleaning device |
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| CN (1) | CN110938828A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042259A (en) * | 2006-10-10 | 2007-09-26 | 许志治 | Step heating method of heat pump and its uses thereof for heat recovery hot-water boiler |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
| CN104236080A (en) * | 2013-06-19 | 2014-12-24 | 黄石鑫华轮毂有限公司 | Coating pretreatment hot-water circulating heating device for automobile hubs |
| CN104937141A (en) * | 2012-12-14 | 2015-09-23 | 泰坦金属加工厂 | A system and method for pickling, and a method of manufacturing steel products |
| JP2016176096A (en) * | 2015-03-19 | 2016-10-06 | Ｊｆｅスチール株式会社 | Method for controlling temperature of acid cleaning liquid |
| CN208139555U (en) * | 2018-04-11 | 2018-11-23 | 中山市今玛涂装机电有限公司 | Throw slot type water heater |
| CN208332662U (en) * | 2018-03-20 | 2019-01-04 | 北京中力创业机电设备有限公司 | Preheating type hot water boiler |
-
2019
- 2019-12-11 CN CN201911268322.3A patent/CN110938828A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042259A (en) * | 2006-10-10 | 2007-09-26 | 许志治 | Step heating method of heat pump and its uses thereof for heat recovery hot-water boiler |
| CN104937141A (en) * | 2012-12-14 | 2015-09-23 | 泰坦金属加工厂 | A system and method for pickling, and a method of manufacturing steel products |
| CN104236080A (en) * | 2013-06-19 | 2014-12-24 | 黄石鑫华轮毂有限公司 | Coating pretreatment hot-water circulating heating device for automobile hubs |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
| JP2016176096A (en) * | 2015-03-19 | 2016-10-06 | Ｊｆｅスチール株式会社 | Method for controlling temperature of acid cleaning liquid |
| CN208332662U (en) * | 2018-03-20 | 2019-01-04 | 北京中力创业机电设备有限公司 | Preheating type hot water boiler |
| CN208139555U (en) * | 2018-04-11 | 2018-11-23 | 中山市今玛涂装机电有限公司 | Throw slot type water heater |
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Application publication date: 20200331 |
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