Water-saving MULPIC cooling device and cooling process thereof

Abstract

The invention belongs to the technical field of cooling devices, and particularly relates to a water-saving MULPIC cooling device and a cooling process thereof.The water-saving MULPIC cooling device comprises a box body, the top of the box body is detachably connected with a sealing cover plate, the box body is provided with two sets of adjusting mechanisms, and the two sets of adjusting mechanisms are arranged on the box body; the two sets of adjusting mechanisms are symmetrically arranged with the center line of the box body as the symmetry axis, and a cooling space is formed by the two sets of adjusting mechanisms and the inner wall of the box body. According to the water-saving MULPIC cooling device and the cooling process thereof, by arranging the adjusting spaces on the two sides of the box body, a small amount of cooling water leaked due to sealing abrasion of the push plate can be effectively collected and discharged through the first water outlet, and waste of the part of water is avoided. When steel plates with different widths are cooled, the position of the pushing plate can be flexibly adjusted, whether the edges of the steel plates are cooled or not is accurately controlled, the utilization rate of water resources is increased, and compared with a traditional cooling mode, the water-saving effect is remarkable, and the production cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling devices, and particularly to a water-saving MULPIC cooling device and its cooling process. Background Art

[0002] In the hot rolling industry of iron and steel metallurgy, MULPIC is a common product control cooling process and equipment, and is an important device for adjusting and controlling the internal performance of steel plates (strip steel) after hot rolling. By installing multiple groups of multi-section nozzles above the output roller table of the rolling mill and below the roller surface elevation, water is sprayed on the upper and lower surfaces of the steel plate at the same time, so as to quickly cool the steel plate (strip steel) at a set rate within a few seconds, thereby obtaining the required crystal phase structure and performance indicators. Since the edge of the steel plate dissipates heat quickly and the cooling intensity is relatively high, the common method during cooling is to adopt "edge shielding", that is, to use an "umbrella" to block the cooling water at the edge of the steel plate and prevent the water from directly hitting the steel plate, so as to reduce the cooling water volume at the edge of the hot steel plate and thus obtain consistent internal performance. The conventional "edge shielding" is to set a long longitudinal baffle between the hot steel plate and the upper cooling header to block the cooling water sprayed towards the edge of the steel plate. However, this structure only prevents the cooling water from hitting the hot steel plate and cannot avoid the waste of this part of the water volume. At the same time, there is no suitable "edge shielding" facility for the lower header below the roller surface elevation. The actual cooling of the lower surface of the steel plate is also uneven. Taking the controlled cooling of a 2-meter-wide steel plate as an example, at least 100 mm of "edge shielding" area is required on each side, which means that at least 10% of the cooling water is blocked and directly flows into the return ditch, resulting in a 10% waste of the total water volume. In fact, due to the width of the cooling header being wider than the steel plate (strip steel), the waste ratio will be even larger.

[0003] Therefore, a reliable device is needed to control the cooling water volume at the edge of the hot steel plate, ensure the realization of edge shielding in the MULPIC process, and at the same time operate efficiently, energy-saving and water-saving. Summary of the Invention

[0004] The main object of the present invention is to provide a water-saving MULPIC cooling device and its cooling process, which can solve the problems raised in the above background art.

[0005] To achieve the above object, the water-saving MULPIC cooling device proposed by the present invention includes a box body, the top of the box body is detachably connected with a sealing cover plate, an adjusting mechanism is arranged on the box body, there are two groups of the adjusting mechanisms, and the two groups of adjusting mechanisms are symmetrically arranged with the center line of the box body as the axis of symmetry. The two groups of adjusting mechanisms and the inner wall of the box body form a cooling space, and adjusting spaces are arranged on both sides of the cooling space for saving cooling water.

[0006] Preferably, the adjusting mechanism includes a pushing plate, a sealing gasket is inlaid on the pushing plate, an auxiliary sealing component and a connecting component are arranged on the pushing plate, a screw rod is arranged on the connecting component, the screw rod is threadedly connected with a threaded sleeve, and a first guide rod is detachably connected to the outer wall of the pushing plate. The first guide rod penetrates through the sealing and positioning sleeve and is slidably connected with the sealing and positioning sleeve.

[0007] Preferably, the auxiliary sealing component includes an air chamber, the air chamber is communicated with a connecting pipe, one end of the connecting pipe far away from the air chamber is communicated with the sealing gasket, a piston ring is connected to the piston in the air chamber, and a straight rod is fixedly connected to the outer wall of the piston ring.

[0008] Preferably, the connecting component includes a mounting plate, the mounting plate is penetrated by a second guide rod and is slidably connected with the second guide rod. The second guide rod is fixedly connected to the outer wall of the pushing plate. The mounting plate and the pushing plate are elastically connected by a return spring, and the return spring is sleeved on the second guide rod. The mounting plate abuts against the straight rod.

[0009] Preferably, a connecting ring is fixedly installed on one side of the mounting plate far away from the straight rod by bolts, and the connecting ring is rotatably connected with the screw rod through a bearing.

[0010] Preferably, both the threaded sleeve and the sealing and positioning sleeve are fixedly connected to the outer wall of the box body.

[0011] Preferably, mounting grooves and inlay grooves are formed on the outer wall of the pushing plate. The mounting grooves are used for mounting the sealing gasket, and the inlay grooves are used for mounting the air chamber.

[0012] Preferably, a water inlet, a first water outlet and a second water outlet are formed on the outer wall of the box body. The water inlet is used for supplying cooling water to the cooling space. The first water outlet is used for discharging the cooling water entering the adjusting space. The second water outlet is used for discharging the cooling water used in the cooling space.

[0013] Preferably, a placement rack is placed inside the box body, and through holes are formed in the placement rack.

[0014] A cooling process of a water-saving MULPIC cooling device includes the following steps:

[0015] S1. First, open the sealing cover plate, then place the steel plate on the placement rack. When it is necessary to cool the edge of the steel plate, reverse-rotate the handle of the screw rod. The second guide rod limits the mounting plate, so that the pushing plate moves towards the inner wall of the box body and does not shield the edge of the steel plate.

[0016] S2. Then close the sealing cover plate, add cooling water to the cooling space through the water inlet to cool the steel plate. The cooled cooling water is discharged from the second water outlet, and a small amount of cooling water passing through the pushing plate is discharged from the first water outlet after entering the adjusting space.

[0017] S3. When it is not necessary to cool the edges of the steel plate, turn the handle of the screw clockwise. The mounting plate moves towards the direction of the return spring. Due to the elastic force of the return spring, the pushing plate moves towards the edges of the steel plate until the edges of the steel plate are shielded.

[0018] S4. After the pushing plate shields the edges of the steel plate, due to the continuous rotation of the screw, the mounting plate squeezes the straight rod, and the straight rod drives the piston ring to move. The gas in the air chamber is squeezed into the gasket through the connecting pipe, and the gasket expands and is in close contact with the inner wall of the box body.

[0019] S5. Then close the sealing cover plate, and add cooling water to the cooling space through the water inlet to cool the steel plate.

[0020] S6. After the steel plate is cooled, open the sealing cover plate, rotate the screw in the reverse direction, the return spring resets, the gasket contracts, and the excess gas re-enters the air chamber, reducing the wear of the gasket when the pushing plate moves.

[0021] The present invention provides a water-saving MULPIC cooling device and its cooling process, which have the following beneficial effects:

[0022] (1). By providing adjustment spaces on both sides of the box body, the water-saving MULPIC cooling device and its cooling process can effectively collect a small amount of cooling water leaked due to the seal wear of the pushing plate and discharge it through the first water outlet, avoiding the waste of this part of water. When cooling steel plates of different widths, the position of the pushing plate can be flexibly adjusted to achieve precise control over whether to cool the edges of the steel plate. When edge cooling is not required, move the pushing plate to shield the edges, so that the cooling water is only concentrated in the cooling space to cool the middle part of the steel plate, greatly reducing the consumption of cooling water, improving the utilization rate of water resources, and having a significant water-saving effect compared with traditional cooling methods, effectively reducing production costs.

[0023] (2). Through the design of the auxiliary sealing component, the water-saving MULPIC cooling device and its cooling process enable the device to have good sealing performance. The air chamber, connecting pipe, piston ring and straight rod cooperate with each other. After the pushing plate shields the edges of the steel plate, the continuous rotation of the screw drives the mounting plate to squeeze the straight rod, causing the piston ring to move, squeezing the gas in the air chamber into the gasket, and the gasket expands and is in close contact with the inner wall of the box body. This dynamic sealing method can enhance the sealing effect according to actual needs, effectively prevent the leakage of cooling water, and save the use of cooling water.

[0024] (3) The water-saving MULPIC cooling device and its cooling process are simple and flexible to operate through the use of the adjustment mechanism. By turning the handle of the screw rod, the movement of the push plate can be easily controlled, realizing the adjustment of the cooling of the steel plate edge. Whether it is a steel plate that requires edge cooling or a steel plate that does not require edge cooling, corresponding operations can be quickly carried out. Moreover, during the operation process, components such as the return spring and guide rod cooperate with each other to ensure the stable movement of the push plate. After the cooling is completed, turning the screw rod in the reverse direction, the return spring resets, the sealing gasket shrinks, reducing the wear of the sealing gasket when the push plate moves and improving the service life of the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 Schematic diagram of the overall internal structure of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the adjustment mechanism of the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of structure A;

[0030] Figure 5 Schematic diagram of the sectional structure of the auxiliary sealing group of the present invention;

[0031] Figure 6 Schematic diagram of the structure of the push plate of the present invention;

[0032] Figure 7 Schematic diagram of the structure of the placement rack of the present invention.

[0033] Explanation of the reference numerals in the drawings:

[0034] 1. Box body; 2. Sealed cover plate; 3. Adjusting mechanism; 4. Cooling space; 5. Adjusting space; 6. Placing rack; 101. Water inlet; 102. First water outlet; 103. Second water outlet; 31. Pushing plate; 32. Sealing gasket; 33. Auxiliary sealing component; 34. Connecting component; 35. Screw rod; 36. Threaded sleeve; 37. First guide rod; 38. Sealing positioning sleeve; 311. Installation groove; 312. Inlay groove; 331. Air chamber; 332. Connecting pipe; 333. Piston ring; 334. Straight rod; 341. Installation plate; 342. Second guide rod; 343. Return spring; 344. Connecting ring; 345. Bearing; 61. Through hole.

[0035] The realization, functional features and advantages of the purpose of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-7 , the present invention provides a water-saving MULPIC cooling device, including a box body 1, a sealed cover plate 2 is detachably connected to the top of the box body 1, an adjusting mechanism 3 is arranged on the box body 1, there are two groups of the adjusting mechanism 3, and the two groups of the adjusting mechanism 3 are symmetrically arranged with the center line of the box body 1 as the axis of symmetry. The two groups of the adjusting mechanism 3 and the inner wall of the box body 1 form a cooling space 4. Adjusting spaces 5 are arranged on both sides of the cooling space 4 for saving cooling water. A placing rack 6 is placed inside the box body 1, and through holes 61 are opened on the placing rack 6. The placing rack 6 is used to carry steel plates, and the use of the through holes 61 does not affect the cooling of the lower side of the steel plates.

[0038] In the embodiment of the present invention, the adjusting mechanism 3 includes a pushing plate 31, a sealing gasket 32 is inlaid and installed on the pushing plate 31, an auxiliary sealing component 33 and a connecting component 34 are arranged on the pushing plate 31, a screw rod 35 is arranged on the connecting component 34, the screw rod 35 is threadedly connected with a threaded sleeve 36, a first guide rod 37 is detachably connected to the outer wall of the pushing plate 31, the first guide rod 37 penetrates through the sealing positioning sleeve 38 and is slidably connected with the sealing positioning sleeve 38. Both the threaded sleeve 36 and the sealing positioning sleeve 38 are fixedly connected to the outer wall of the box body 1. By turning the handle of the screw rod 35, the connecting component 34 can be driven to move, and then the pushing plate 31 can be driven to move, so as to shield or not shield the edge of the steel plate, which is convenient for subsequent use for different cooling of the steel plate.

[0039] Further, the connecting component 34 includes a mounting plate 341. The mounting plate 341 is penetrated by the second guide rod 342 and is slidably connected to the second guide rod 342. The second guide rod 342 is fixedly connected to the outer wall of the pushing plate 31. The mounting plate 341 and the pushing plate 31 are elastically connected by a return spring 343, and the return spring 343 is sleeved on the second guide rod 342. A connecting ring 344 is fixedly installed on the side of the mounting plate 341 away from the straight rod 334 by bolts. The connecting ring 344 is rotatably connected to the screw 35 through a bearing 345. The first guide rod 37 and the pushing plate 31 are detachably connected by a flange connector. In this way, the connection between the first guide rod 37 and the pushing plate 31 can be disassembled, and the connection between the screw 35 and the mounting plate 341 can be disassembled, which is convenient for replacing the pushing plate 31 after the pushing plate 31 is severely worn later.

[0040] Further, the auxiliary sealing component 33 includes an air chamber 331. The air chamber 331 is communicated with a connecting pipe 332. One end of the connecting pipe 332 away from the air chamber 331 is communicated with the sealing gasket 32. A piston ring 333 is connected to the piston in the air chamber 331. A straight rod 334 is fixedly connected to the outer wall of the piston ring 333. The mounting plate 341 abuts against the straight rod 334. An installation groove 311 and an inlay groove 312 are formed on the outer wall of the pushing plate 31. The installation groove 311 is used for installing the sealing gasket 32, and the inlay groove 312 is used for installing the air chamber 331. After the pushing plate 31 shields the edge of the steel plate, due to the continuous rotation of the screw 35, the mounting plate 341 presses the straight rod 334, and the straight rod 334 drives the piston ring 333 to move, squeezing the gas in the air chamber 331 into the sealing gasket 32 through the connecting pipe 332. The sealing gasket 32 expands and is in close contact with the inner wall of the box body 1, improving the sealing effect, effectively preventing the leakage of cooling water, saving the use of cooling water. After the steel plate is cooled, by opening the sealing cover plate 2 and rotating the screw 35 in the reverse direction, the return spring 343 resets, the sealing gasket 32 contracts, and the excess gas re-enters the air chamber 331, which can reduce the wear of the sealing gasket 32 when the pushing plate 31 moves and improve the service life of the sealing gasket 32.

[0041] Further, a water inlet 101, a first water outlet 102, and a second water outlet 103 are provided on the outer wall of the box body 1. The water inlet 101 is used to supply cooling water to the cooling space 4, the first water outlet 102 is used to discharge the cooling water that enters the adjustment space 5, and the second water outlet 103 is used to discharge the cooling water used in the cooling space 4. A placement rack 6 is placed inside the box body 1, and through holes 61 are provided on the placement rack 6. By arranging adjustment spaces 5 on both sides of the box body 1, a small amount of cooling water leaked due to the sealing wear of the push plate 31 can be effectively collected and discharged through the first water outlet 102, avoiding the waste of this part of water. When cooling steel plates of different widths, the position of the push plate 31 can be flexibly adjusted to achieve precise control of whether to cool the edges of the steel plate. When edge cooling is not required, the push plate 31 is moved to cover the edges, so that the cooling water is only concentrated in the cooling space 4 to cool the middle of the steel plate, greatly reducing the consumption of cooling water, improving the utilization rate of water resources, and having a significant water-saving effect compared with the traditional cooling method, effectively reducing the production cost.

[0042] The cooling process of a water-saving MULPIC cooling device proposed by the present invention includes the following steps:

[0043] S1. First, open the sealing cover plate 2, and then place the steel plate on the placement rack 6. When it is necessary to cool the edges of the steel plate, reverse-rotate the handle of the screw rod 35. The guide rod two 342 limits the mounting plate 341, so that the push plate 31 moves towards the inner wall of the box body 1 and does not cover the edges of the steel plate.

[0044] S2. Then close the sealing cover plate 2, add cooling water to the cooling space 4 through the water inlet 101 to cool the steel plate, and the cooled cooling water is discharged from the second water outlet 103. A small amount of cooling water passing through the push plate 31 is discharged through the first water outlet 102 after entering the adjustment space 5.

[0045] S3. When it is not necessary to cool the edges of the steel plate, rotate the handle of the screw rod 35 clockwise. The mounting plate 341 moves towards the direction of the return spring 343. Due to the elastic force of the return spring 343, the push plate 31 moves towards the edges of the steel plate until the edges of the steel plate are covered.

[0046] S4. After the push plate 31 covers the edges of the steel plate, due to the continuous rotation of the screw rod 35, the mounting plate 341 squeezes the straight rod 334, and the straight rod 334 drives the piston ring 333 to move, squeezing the gas in the air chamber 331 into the sealing gasket 32 through the connecting pipe 332, and the sealing gasket 32 expands and is in close contact with the inner wall of the box body 1.

[0047] S5. Then close the sealing cover plate 2, add cooling water to the cooling space 4 through the water inlet 101 to cool the steel plate.

[0048] After the steel plate is cooled, open the sealing cover plate 2, rotate the screw rod 35 in the reverse direction, the return spring 343 returns to its original position, the sealing gasket 32 contracts, and the excess gas re-enters the air chamber 331, reducing the wear of the sealing gasket 32 when the pushing plate 31 moves.

[0049] It should be noted that the above-mentioned fixed connection and sliding connection are both connection methods that can be achieved by the prior art. The fixed connection can be realized by welding or flange connection, etc., and the present invention will not elaborate on this. The components are all common standard parts or components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods, and specific limitations are not made here.

[0050] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A water-saving MULPIC cooling device, comprising a box body (1), characterized in that: A sealing cover plate (2) is detachably connected to the top of the box body (1). An adjusting mechanism (3) is arranged on the box body (1). There are two groups of the adjusting mechanisms (3), and the two groups of the adjusting mechanisms (3) are symmetrically arranged with the center line of the box body (1) as the axis of symmetry. The two groups of the adjusting mechanisms (3) and the inner wall of the box body (1) form a cooling space (4). Adjusting spaces (5) are arranged on both sides of the cooling space (4) to save cooling water.

2. The water-saving MULPIC cooling device according to claim 1, characterized in that: The adjusting mechanism (3) includes a pushing plate (31). A sealing gasket (32) is inlaid and installed on the pushing plate (31). An auxiliary sealing assembly (33) and a connecting assembly (34) are arranged on the pushing plate (31). A screw rod (35) is arranged on the connecting assembly (34). The screw rod (35) is in threaded connection with a threaded sleeve (36). A first guide rod (37) is detachably connected to the outer wall of the pushing plate (31). The first guide rod (37) penetrates through a sealing positioning sleeve (38) and is slidably connected to the sealing positioning sleeve (38).

3. The water-saving MULPIC cooling device according to claim 2, characterized in that: The auxiliary sealing assembly (33) includes an air chamber (331). The air chamber (331) is communicated with a communicating pipe (332). One end of the communicating pipe (332) far away from the air chamber (331) is communicated with the sealing gasket (32). A piston ring (333) is piston-connected in the air chamber (331). A straight rod (334) is fixedly connected to the outer wall of the piston ring (333).

4. The water-saving MULPIC cooling device according to claim 3, characterized in that: The connecting assembly (34) includes a mounting plate (341). The mounting plate (341) is penetrated by a second guide rod (342) and is slidably connected to the second guide rod (342). The second guide rod (342) is fixedly connected to the outer wall of the pushing plate (31). The mounting plate (341) and the pushing plate (31) are elastically connected by a return spring (343), and the return spring (343) is sleeved on the second guide rod (342). The mounting plate (341) abuts against the straight rod (334).

5. The water-saving MULPIC cooling device according to claim 4, characterized in that: A connecting ring (344) is fixedly installed on one side of the mounting plate (341) far away from the straight rod (334) by bolts. The connecting ring (344) and the screw rod (35) are rotatably connected by a bearing (345).

6. The water-saving MULPIC cooling device according to claim 2, characterized in that: Both the threaded sleeve (36) and the sealing positioning sleeve (38) are fixedly connected to the outer wall of the box body (1).

7. The water-saving MULPIC cooling device according to claim 3, wherein: Mounting grooves (311) and inlaying grooves (312) are formed on the outer wall of the pushing plate (31). The mounting grooves (311) are used for mounting the sealing gasket (32), and the inlaying grooves (312) are used for mounting the air chamber (331).

8. The water-saving MULPIC cooling device according to claim 1, characterized in that: An inlet (101), a first outlet (102) and a second outlet (103) are formed on the outer wall of the box body (1). The inlet (101) is used for supplying cooling water to the cooling space (4). The first outlet (102) is used for discharging the cooling water entering the adjusting space (5). The second outlet (103) is used for discharging the cooling water used in the cooling space (4).

9. A water-saving MULPIC cooling device according to claim 1, characterized in that: A placing rack (6) is placed inside the box body (1). Through holes (61) are formed on the placing rack (6).

10. A cooling process for a water-saving MULPIC cooling device, according to any one of claims 1-9, a water-saving MULPIC cooling device, characterized in that, Including the following steps: S1. First, open the sealing cover plate (2), then place the steel plate on the placing rack (6). When it is necessary to cool the edge of the steel plate, rotate the handle of the screw rod (35) in the reverse direction. With the guide rod two (342) limiting the mounting plate (341), the pushing plate (31) moves towards the inner wall direction of the box body (1) without shielding the edge of the steel plate. S2. Then, close the sealing cover plate (2), add cooling water into the cooling space (4) through the water inlet (101) to cool the steel plate. The cooled cooling water is discharged from the second water outlet (103), and a small amount of the cooling water passing through the pushing plate (31) is discharged from the first water outlet (102) after entering the adjusting space (5). S3. When it is not necessary to cool the edge of the steel plate, rotate the handle of the screw rod (35) clockwise. The mounting plate (341) moves towards the direction of the return spring (343). Due to the elastic force of the return spring (343), the pushing plate (31) moves towards the edge of the steel plate until it shields the edge of the steel plate. S4. After the pushing plate (31) shields the edge of the steel plate, due to the continuous rotation of the screw rod (35), the mounting plate (341) squeezes the straight rod (334), and the straight rod (334) drives the piston ring (333) to move, squeezing the gas in the air chamber (331) into the sealing gasket (32) through the connecting pipe (332), and the sealing gasket (32) expands and is in close contact with the inner wall of the box body (1). S5. Then, close the sealing cover plate (2), add cooling water into the cooling space (4) through the water inlet (101) to cool the steel plate. S6. After the steel plate is cooled, open the sealing cover plate (2), rotate the screw rod (35) in the reverse direction, the return spring (343) resets, the sealing gasket (32) contracts, and the excess gas re-enters the air chamber (331) to reduce the wear of the sealing gasket (32) when the pushing plate (31) moves.

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