Turbid circulating water purification system and cooling device comprising same

Abstract

The utility model relates to a turbid circulating water purification system and a cooling device comprising the turbid circulating water purification system, the turbid circulating water purification system comprises an advection pool with an opening at the top, a turbid circulating water main pipeline communicated with the advection pool, a purified water outlet arranged at the other end of the turbid circulating water main pipeline, and a circulating pump arranged on the turbid circulating water main pipeline, the filtering pipelines are arranged on the turbid circulating water main pipeline in parallel, and pipeline filters and first valves are arranged on the filtering pipelines. The utility model solves the problem that the water spray elbow and the nozzle are easy to block due to accumulation of impurities in cooling water.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot rolling mill cooling, and in particular relates to a turbid circulating water purification system and a cooling device comprising the same. Background Art

[0002] In the process of rolling steel billets into wire rods using a hot rolling mill, in order to control the thermal convexity of the rolls and roll rings, restrict the thickness of the oxide layer, avoid the reduction of the shear resistance of the steel, and reduce the thermal cracks on the surface of the steel, the current common practice is to spray water on the rolls or roll rings of the hot rolling mill to cool them down during the hot rolling process. The cooling device of the hot rolling mill is usually a horizontal flow pool for collecting the spray water at the bottom of the hot rolling mill, a water spray elbow is arranged on the outside of the rolls or roll rings of the hot rolling mill, and a number of nozzles are arranged on the inside of the water spray elbow. In order to save water, the cooling water is recycled. , and the water spray elbow is usually connected to the advection pool to supply water to the water spray elbow, which will lead to the following problems: when the cooling water is used for a long time, it is easy to cause impurities to accumulate, which is easy to cause the blockage of the water spray elbow and the nozzle, which affects the cooling effect on the one hand. In severe cases, the roller or roller ring will explode due to excessive temperature; on the other hand, the water spray pipe and nozzle need to be replaced and cleaned regularly, but this operation cannot be performed online and can only be stopped, which seriously affects the progress of the production line. Although the application number is 202122896173 .4 discloses a cooling device for a hot rolling mill, which has two sets of cooling devices and a threaded plug at one end of a water spray elbow. The water spray pipe is cleaned by removing the threaded plug, so that the water spray pipe and nozzle can be cleaned and repaired without stopping the machine. The problem is that the hot rolling mill radiates heat into the air during operation. Therefore, the ambient temperature near the water spray pipe is very high, and at least one set of cooling devices is in operation. It is difficult for the operator to get close to the water spray pipe to remove the threaded plug. Therefore, the online cleaning of the water spray pipe claimed by it is only an idea, and its actual operation is not feasible. Utility Model Content

[0003] The utility model aims to overcome the defect in the prior art that impurities accumulated in cooling water during long-term use are easy to clog the water spray pipe and the nozzle, and provides a turbid circulating water purification system and a cooling device containing the same.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A turbid circulating water purification system comprises a top open advection pool, a turbid circulating water main pipeline connected to the advection pool, a clean water outlet arranged at the other end of the turbid circulating water main pipeline, a circulation pump arranged on the turbid circulating water main pipeline, and one or two filtering pipelines arranged in parallel on the turbid circulating water main pipeline, wherein the filtering pipeline is provided with a pipeline filter and a first valve.

[0006] As a further technical solution, there are two filtering pipes, namely a first filtering pipe and a second filtering pipe, and there are two pipe filters, namely a large-aperture pipe filter and a small-aperture pipe filter. The large-aperture pipe filter is arranged on the first filtering pipe, and the small-aperture pipe filter is arranged on the second filtering pipe.

[0007] As a further technical solution, the filter mesh pore size of the large-aperture pipeline filter is 8 mm, and the filter mesh pore size of the small-aperture pipeline filter is 4 mm.

[0008] As a further technical solution, a sewage collection box is arranged above the advection pool, an opening communicating with the advection pool is arranged on the sewage collection box, and a filter is arranged at the opening.

[0009] As a further technical solution, the sewage outlets of the large-aperture pipe filter and the small-aperture pipe filter are respectively connected to the sewage collection tank through corresponding sewage branch pipes and sewage main pipes; and sewage valves are provided on the sewage branch pipes.

[0010] A cooling device comprises the turbid water purification system and at least one water-cooled spray device connected to the clean water outlet of the turbid water purification system, wherein the water-cooled spray device is arranged above the advection pool.

[0011] As a further technical solution, the water-cooled spray device includes an arc-shaped water spray bend pipe and a plurality of nozzles arranged on the inner ring wall of the water spray bend pipe; one end of the water spray bend pipe is connected to the clean water outlet of the turbid water purification system, and a threaded plug is arranged at the other end.

[0012] As a further technical solution, there are two sets of water-cooled spray devices, which are symmetrically arranged. The two sets of water-cooled spray devices are respectively connected to the clean water outlet of the turbid circulating water main pipeline through corresponding branch pipes; a second valve is arranged on the branch pipe.

[0013] As a further technical solution, two sets of water-cooling spray devices are respectively a large-aperture water-cooling spray device and a small-aperture water-cooling spray device. The nozzle of the large-aperture water-cooling spray device adopts a large-aperture nozzle, and the nozzle of the small-aperture water-cooling spray device adopts a small-aperture nozzle.

[0014] As a further technical solution, the curvature of the water spray elbow is 90 degrees.

[0015] As a further technical solution, a pipe joint is provided at one end of the water spray elbow away from the threaded plug.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a pipeline filter on the pipeline connecting the advection tank and the cooling device, and uses the pipeline filter to filter out impurities in the cooling water, thereby solving the problem that the water spray elbow and the nozzle are easily blocked due to the accumulation of impurities in the cooling water.

[0018] The utility model arranges two pipeline filters with different apertures in parallel, and respectively cooperates with two sets of water-cooled spray devices with different nozzle apertures for use, thereby achieving the filtering and purification requirements for cooling water. It ensures that the water spray pipe and the nozzle are not blocked during long-term use of the cooling chamber without stopping the machine for cleaning, thereby solving a series of problems in the prior art caused by the blockage of the water spray pipe and the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a cooling device in one embodiment of the utility model (with a roller ring);

[0020] In the figure: 1. advection tank, 2. turbid circulating water main pipeline, 3. circulation pump, 4. first valve, 5. first filter pipeline, 6. second filter pipeline, 7. large-aperture pipeline filter, 8. small-aperture pipeline filter, 9. sewage collection box, 10. filter screen, 11. sewage branch pipe, 12. sewage main pipe, 13. sewage valve, 14. large-aperture water-cooled spray device, 15. small-aperture water-cooled spray device, 16. water spray elbow, 17. nozzle, 18. threaded plug, 19. second valve, 20. pipeline joint, 21. roller ring. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention will be described in further detail below with reference to the accompanying drawings. Example 1

[0025] As an embodiment of the turbid water purification system of the utility model, Figure 1 As shown, it includes an advection pool 1 with an open top, a turbid circulating water main pipeline 2 connected to the advection pool 1, a clean water outlet arranged at the other end of the turbid circulating water main pipeline 2, a circulating pump 3 arranged on the turbid circulating water main pipeline 2, and one or two filtering pipelines arranged in parallel on the turbid circulating water main pipeline 2, and the filtering pipeline is provided with a pipeline filter and a first valve 4. The utility model solves the problem that the water spray elbow 16 and the nozzle 17 are easily blocked due to the accumulation of impurities in the cooling water by arranging a pipeline filter on the pipeline connecting the advection pool 1 and the cooling device, and using the pipeline filter to filter out impurities in the cooling water.

[0026] As an embodiment of a turbid water purification system of the utility model, there are two filtering pipes, namely a first filtering pipe 5 and a second filtering pipe 6, and there are two pipe filters, namely a large-aperture pipe filter 7 and a small-aperture pipe filter 8. The large-aperture pipe filter is arranged on the first filtering pipe 5, and the small-aperture pipe filter 8 is arranged on the second filtering pipe 6.

[0027] As an embodiment of a turbid water purification system of the utility model, the filter mesh pore size of the large-aperture pipeline filter 7 is 8 mm, and the filter mesh pore size of the fine filter is 4 mm.

[0028] As an embodiment of a turbid water purification system of the utility model, a sewage collection box 9 is arranged above the advection pool 1, and an opening connected to the advection pool 1 is arranged on the sewage collection box 9, and a filter screen 10 is arranged at the opening. The sewage containing impurities discharged from the filter is filtered by the filter screen 10 and then recycled by the advection pool 1 again, thereby saving water.

[0029] As an embodiment of a turbid water purification system of the utility model, the sewage outlets of the large-aperture pipe filter 7 and the small-aperture pipe filter 8 are respectively connected to the sewage collection tank 9 through corresponding sewage branch pipes 11 and sewage main pipes 12; a sewage valve 13 is provided on the sewage branch pipe 11. Example 2

[0030] Figure 1 An embodiment of a cooling device of the utility model shown includes a turbid water purification system and two water-cooled spray devices connected to the clean water outlet of the turbid water purification system. The turbid water purification system includes an advection pool 1 with an open top, a turbid water main pipeline 2 connected to the advection pool 1, a clean water outlet arranged at the other end of the turbid water main pipeline 2, a circulating pump 3 arranged on the turbid water main pipeline 2, and two filter pipelines arranged in parallel on the turbid water main pipeline 2, wherein the filter pipeline is provided with a pipeline filter and a first valve 4; the water-cooled spray device is arranged above the advection pool 1. The utility model arranges two pipeline filters of different apertures in parallel, and uses them in conjunction with two sets of water-cooled spray devices of different nozzle 17 apertures, respectively, to achieve the filtering and purification requirements for cooling water. Without stopping the machine for cleaning, it ensures that the water spray pipe and the nozzle 17 are not blocked during long-term use of the cooling chamber, and solves a series of problems caused by the blockage of the water spray pipe and the nozzle 17 in the prior art.

[0031] As an embodiment of a cooling device of the utility model, there are two filtering pipes, namely a first filtering pipe 5 and a second filtering pipe 6, and there are two pipe filters, namely a large-aperture pipe filter 7 and a small-aperture pipe filter 8. The large-aperture pipe filter is arranged on the first filtering pipe 5, and the small-aperture pipe filter 8 is arranged on the second filtering pipe 6.

[0032] As an embodiment of a cooling device of the utility model, the filter mesh pore size of the large-pore pipe filter 7 is 8 mm, and the filter mesh pore size of the fine filter is 4 mm.

[0033] As an embodiment of a cooling device of the utility model, the water-cooled spray device includes an arc-shaped water spray elbow 16 and a plurality of nozzles 17 arranged on the inner ring wall of the water spray elbow 16; one end of the water spray elbow 16 is connected to the clean water outlet of the turbid water purification system, and the other end is provided with a threaded plug 18.

[0034] As an embodiment of a cooling device of the utility model, the water-cooled spray device is provided in two sets and is symmetrically arranged. The two sets of water-cooled spray devices are respectively connected to the clean water outlet of the turbid circulating water main pipeline 2 through corresponding branch pipes; a second valve 19 is provided on the branch pipe.

[0035] As an embodiment of a cooling device of the utility model, two sets of water-cooling spray devices are respectively a large-aperture water-cooling spray device 14 and a small-aperture water-cooling spray device 15. The nozzle 17 of the large-aperture water-cooling spray device 14 adopts a large-aperture nozzle 17, and the nozzle 17 of the small-aperture water-cooling spray device 15 adopts a small-aperture nozzle 17.

[0036] As an embodiment of a cooling device of the utility model, the curvature of the water spray elbow 16 is 90 degrees.

[0037] As an embodiment of a cooling device of the utility model, a pipe joint 20 is provided at one end of the water spray elbow 16 away from the threaded plug 18 .

[0038] As an embodiment of a cooling device of the utility model, a sewage collection box 9 is provided above the advection pool 1, and an opening communicating with the advection pool 1 is provided on the sewage collection box 9, and a filter screen 10 is provided at the opening. Since the device is in operation when the filter of the utility model discharges impurities, water will be discharged through the sewage outlet of the pipeline filter at this time, therefore, the utility model is provided with a sewage collection box, and the sewage containing impurities is filtered by providing a filter screen, and then discharged into the advection pool 1 again for recycling, thereby avoiding water waste.

[0039] As an embodiment of a cooling device of the utility model, the pore size of the filter screen 10 is smaller than or equal to the pore size of the filter screen in the small-pore-diameter pipeline filter 8 .

[0040] As an embodiment of a cooling device of the utility model, the sewage outlets of the large-aperture pipe filter 7 and the small-aperture pipe filter 8 are respectively connected to the sewage collection tank 9 through corresponding sewage branch pipes 11 and sewage main pipes 12; a sewage valve 13 is provided on the sewage branch pipe 11.

[0041] The use of the utility model:

[0042] Normally, mode 1 is adopted for operation. In mode 1, the first valve 4 on the first filter pipe 5 and the second valve 19 of the large-aperture water-cooled spray device 14 are opened, the first valve 4 on the second filter pipe 6 and the second valve 19 of the small-aperture water-cooled spray device 15 are closed, the drain valve connected to the large-aperture pipe filter 7 is closed, and the drain valve connected to the small-aperture pipe filter 8 is closed. At this time, the cooling water in the advection tank 1 will enter the large-aperture pipe filter 7 through the turbid water main pipe 2, enter the large-aperture water-cooled spray device 14 after being filtered by the large-aperture pipe filter 7, and then spray on the hot rolling mill roller or roller ring 21 through the water spray elbow 16 and the nozzle 17, and then flow to the advection tank 1 for recycling of the spray water; in addition, in this mode, the drain outlet of the large-aperture pipe filter 7 needs to be opened regularly to discharge the sewage containing impurities into the sewage collection box 9, which is filtered by the filter net 10 and recycled to the advection tank 1.

[0043] When the water quality seriously deteriorates, or the second mode is operated periodically, in the second mode, the first valve 4 on the second filter pipe 6 and the second valve 19 of the small-aperture water-cooled spray device 15 are opened, the first valve 4 on the first filter pipe 5 and the second valve 19 of the large-aperture water-cooled spray device 14 are closed, the drain valve connected to the small-aperture pipe filter 8 is closed, and the drain valve connected to the large-aperture pipe filter 7 is closed. At this time, the cooling water in the advection tank 1 will enter the small-aperture pipe filter 8 through the turbid water main pipe 2, enter the small-aperture water-cooled spray device 15 after being filtered by the small-aperture pipe filter 8, and then be sprayed on the hot rolling mill roller or roller ring 21 through the water spray elbow 16 and the nozzle 17, and then flow to the advection tank 1 for recycling of the spray water; in addition, the drain outlet of the large-aperture pipe filter 7 also needs to be opened regularly to discharge the sewage containing impurities into the sewage collection box 9, which is filtered by the filter net 10 and recycled to the advection tank 1. Since the water flow rate of the small-aperture pipe filter 8 is small, when this mode is adopted, if necessary, the running speed of the production line needs to be moderately reduced to ensure its cooling effect.

[0044] Since the size of the pipeline filter aperture will affect its water flow rate, and different water flow rates require the selection of nozzles 17 with different apertures, and when the water flow rate is small, the cooling efficiency will also decrease. At this time, it is also necessary to adjust the operating speed of the production line to meet its cooling requirements. Therefore, the utility model sets two sets of pipeline filters with different apertures in parallel, and sets two sets of water-cooling spray devices with different aperture nozzles 17. In this way, under normal circumstances, only the large-aperture pipeline filter 7 needs to be operated, and its water-cooling spray device with the large-aperture nozzle 17 will not affect the operating speed of the production line; and the small-aperture pipeline filter 8 only needs to be operated when the cooling water quality is seriously degraded, or the small-aperture pipeline filter 8 is operated periodically to further remove impurities in the cooling water. The utility model comprises two pipe filters with different apertures, which are used in conjunction with two sets of water-cooled spray devices with different nozzle 17 apertures, to achieve the filtering and purification requirements for cooling water. Without stopping the machine for cleaning, it ensures that the water spray pipe and the nozzle 17 are not blocked during long-term use of the cooling chamber, thereby solving a series of problems caused by the blockage of the water spray pipe and the nozzle 17 in the prior art.

[0045] The above-mentioned embodiments are only preferred embodiments of the present invention, and are not exhaustive of the feasible implementations of the present invention. For those skilled in the art, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A turbid water purification system, characterized in that: The invention comprises a horizontal flow pool with an open top, a turbid circulating water main pipeline connected with the horizontal flow pool, a clean water outlet arranged at the other end of the turbid circulating water main pipeline, a circulating pump arranged on the turbid circulating water main pipeline, and one or two filtering pipelines arranged in parallel on the turbid circulating water main pipeline, wherein the filtering pipeline is provided with a pipeline filter and a first valve.

2. A turbid water purification system according to claim 1, characterized in that: There are two filtering pipes, namely a first filtering pipe and a second filtering pipe, and there are two pipe filters, namely a large-aperture pipe filter and a small-aperture pipe filter. The large-aperture pipe filter is arranged on the first filtering pipe, and the small-aperture pipe filter is arranged on the second filtering pipe.

3. A turbid water purification system according to claim 2, characterized in that: The filter mesh pore size of the large-aperture pipeline filter is 8 mm, and the filter mesh pore size of the small-aperture pipeline filter is 4 mm.

4. A turbid water purification system according to claim 2, characterized in that: A sewage collection box is arranged above the advection pool, an opening communicating with the advection pool is arranged on the sewage collection box, and a filter screen is arranged at the opening.

5. A turbid water purification system according to claim 4, characterized in that: The sewage outlets of the large-aperture pipeline filter and the small-aperture pipeline filter are respectively connected to the sewage collection box through corresponding sewage branch pipes and sewage main pipes; and sewage valves are arranged on the sewage branch pipes.

6. A cooling device, characterized in that: It comprises a turbid ring water purification system as described in any one of claims 1 to 5, and at least one set of water-cooled spray devices connected to the clean water outlet of the turbid ring water purification system, wherein the water-cooled spray devices are arranged above the advection pool.

7. A cooling device according to claim 6, characterized in that: The water-cooled spray device includes an arc-shaped water spray elbow and a plurality of nozzles arranged on the inner ring wall of the water spray elbow; one end of the water spray elbow is connected to the clean water outlet of the turbid water purification system, and the other end is provided with a threaded plug.

8. A cooling device according to claim 7, characterized in that: There are two sets of water-cooled spray devices, which are symmetrically arranged. The two sets of water-cooled spray devices are respectively connected to the clean water outlet of the turbid circulating water main pipeline through corresponding branch pipes; a second valve is arranged on the branch pipe.

9. A cooling device according to claim 8, characterized in that: The two sets of water-cooling spray devices are respectively a large-aperture water-cooling spray device and a small-aperture water-cooling spray device. The nozzle of the large-aperture water-cooling spray device adopts a large-aperture nozzle, and the nozzle of the small-aperture water-cooling spray device adopts a small-aperture nozzle.

10. A cooling device according to claim 7, characterized in that: The curvature of the water spray elbow is 90 degrees; a pipe joint is arranged at one end of the water spray elbow away from the threaded plug.

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