Rapid cooling device for roll system of plate straightening machine

Abstract

The invention relates to a rapid cooling device for a plate straightening machine roller system, and belongs to the technical field of straightening machine maintenance equipment. According to the technical scheme, a water pipe main pipe and a gas pipe main pipe are both of a tubular structure and are connected with a header assembly A and a header assembly B; the adjustable nozzle assemblies and the air blowing nozzle assemblies are installed on the A header assembly and the B header assembly in a staggered mode. The A header assembly and the B header assembly are installed in a straightening machine roller system, and the water pipe main pipe is connected with a water source connector through a hose and connected with an air source connector at the same time. The air pipe main pipe is connected with an air source connector through a hose; the thermal detector is installed at a designated position beside front and rear roller ways of the straightener. The method has the beneficial effects that roller system cooling and roller surface blowing are accurately controlled, the roller system cooling capacity and efficiency are improved, the surface quality of a straightened steel plate is improved, the cooling effect is effectively improved, the product quality is improved, the service life of the roller system is prolonged, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to a rapid cooling device for rollers of a plate straightening machine, belonging to the technical field of straightening machine maintenance equipment. Background Art

[0002] The plate straightening machine is an important equipment on the hot-rolled medium and thick plate production line. As the pace of straightening steel plates accelerates, the temperature of the straightening machine roller system will continue to rise, causing the surface temperature of the straightening machine working roller to be too high and produce the "steel sticking" phenomenon, affecting the surface quality of the produced steel plates; at the same time, too high temperature will cause the roller shape of the straightening machine working roller to be uncontrollable and the deflection to change greatly, causing the straightened steel plate to be wavy, affecting the shape of the steel plate; too high temperature will shorten the life of the working roller and support roller bearings in the roller system, thereby reducing the service life of the roller system.

[0003] like Fig.13 As shown, usually, the roller system 01 of the straightening machine is cooled by the internal cooling water 02. If the cooling requirement cannot be met, the roller system external cooling water 03 is manually opened during the steel gap to cool the roller system. That is, the roller system external cooling water 03 is manually opened after the steel plate is straightened, and the external cooling water 03 is manually closed before the steel plate is straightened. If the temperature still cannot be lowered, the production rhythm can only be reduced or the production line can be stopped after the roller system temperature exceeds the set interlocking protection value, and production can be resumed after the temperature drops, which seriously affects the normal production rhythm.

[0004] like Fig.14 As shown, the roller system external cooling water 03 structure is a porous manifold 031. In actual production, after the roller system external cooling water 03 is closed, there is still a large amount of residual water in the pipeline after the valve, and it will flow to the roller surface and the surface of the straightening steel plate. The residual water condenses the iron oxide powder on the surface of the steel plate and presses into the surface of the steel plate to form pits or pits, which seriously affects the surface quality of the steel plate. At the same time, the manual start and stop time of the roller system external cooling water 03 is difficult to control, resulting in poor roller system cooling effect, more residual water, and increased labor intensity of employees. Therefore, a new technical solution is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid cooling device for the roller system of a plate straightening machine. The cooling water and compressed air manifolds are installed inside the roller system, and the connection and cutoff of the device with the air source and the water source are realized through detection and program control. The adjustable nozzle assemblies and the air blowing nozzle assemblies are staggered on the manifold to spray water on the roller surface to cool it down and quickly cut off the residual water, and quickly blow the residual water on the roller surface, so that the residual water in the manifold does not flow out and the residual water on the roller surface does not contact the straightening steel plate. The cooling of the roller system and the blowing of the roller surface are accurately controlled, the cooling capacity and efficiency of the roller system are improved, and the surface quality of the straightening steel plate is improved, the cooling effect is effectively improved, the product quality is improved, the life of the roller system is extended, the labor intensity of employees is reduced, and the above-mentioned problems existing in the background technology are effectively solved.

[0006] The technical solution of the present invention is: a rapid cooling device for a roller system of a plate straightening machine, comprising a water pipe main, an air pipe main, an A manifold assembly, a B manifold assembly, an adjustable nozzle assembly, an air blowing nozzle assembly, a hose, an electromagnetic valve I, a manual valve I, an electromagnetic valve II, a manual valve II, an electromagnetic valve III, a manual valve III, a water source joint, an air source joint and a thermal detector, wherein the water pipe main and the air pipe main are both tubular structures, connected to the A manifold assembly and the B manifold assembly; the adjustable nozzle assembly and the air blowing nozzle assembly are staggered and installed on the A manifold assembly and the B manifold assembly; the A manifold assembly and the B manifold assembly are installed inside the roller system of the straightening machine, the main water inlet joint of the water pipe main is connected to the electromagnetic valve I, the manual valve I and the water source joint through a hose, and is also connected to the electromagnetic valve II, the manual valve II and the air source joint; the main air inlet joint of the air pipe main is connected to the electromagnetic valve III1, the manual valve III1 and the air source joint through a hose; the thermal detector is installed at a designated position beside the front roller and the rear roller of the straightening machine.

[0007] The A manifold assembly comprises an inner manifold, an outer manifold, a retaining ring, a long branch pipe and a short branch pipe. The inner manifold and the outer manifold are thin-walled circular tubes with one end open and the other end closed, and the outer diameter of the inner manifold is smaller than the inner diameter of the outer manifold, and the length of the inner manifold is greater than the length of the outer manifold. The inner manifold is installed inside the outer manifold and the two are coaxial, and are welded and sealed by a retaining ring. The long branch pipes and the short branch pipes are alternately arranged on the inner manifold and the outer manifold along the axis of the manifold, the long branch pipes are connected to the inner manifold, and the short branch pipes are connected to the outer manifold.

[0008] The inner and outer header bodies are both provided with two rows of equally distributed circular through holes at the same angle along the axis, namely through hole one and through hole two, and the center distance of through hole one is twice the center distance of through hole two.

[0009] The B header assembly is provided with a single row of circular through holes, and the rest of the structure and size are consistent with the A header assembly.

[0010] The adjustable nozzle assembly and the air-blowing nozzle assembly are both assemblies containing nozzles, and the adjustable nozzle assembly contains a pressure threshold adjustment unit. The adjustable nozzle assembly and the air-blowing nozzle assembly are respectively installed in the long branch pipe and the short branch pipe, and are staggered along the axial direction of the A manifold assembly and the B manifold assembly, and the nozzle angles remain consistent.

[0011] It also comprises a one-way valve, which is installed between the water pipe main and the gas source connector.

[0012] The beneficial effects of the present invention are as follows: by installing cooling water and compressed air manifolds inside the roller system, the connection and cutoff of the device with the air source and the water source are achieved through detection and program control, and by staggeredly arranging adjustable nozzle assemblies and air blowing nozzle assemblies on the manifolds, water is sprayed on the roller surface to cool it down and the residual water is quickly cut off, and the residual water on the roller surface is quickly purged, so that the residual water in the manifold does not flow out, and the residual water on the roller surface does not contact the straightening steel plate, the cooling of the roller system and the purging of the roller surface are accurately controlled, the cooling capacity and efficiency of the roller system are improved, and the surface quality of the straightening steel plate is improved, the cooling effect is effectively improved, the product quality is improved, the life of the roller system is extended, and the labor intensity of employees is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention installed in a roller system; Figure 3 is a schematic diagram of the structure of the A header assembly; Figure 4 is a schematic diagram of the cross-sectional structure of the A header assembly along the circumferential direction; Figure 5 It is a schematic diagram of the structure of a long branch pipe; Figure 6 It is a schematic diagram of the structure of the short branch pipe; Figure 7 It is a schematic diagram of the structure of tube I of the outer header; Figure 8 It is a schematic diagram of the structure of tube II of the outer header; Fig. 9 It is a schematic diagram of the structure of the inner header; Fig.10 is a schematic diagram of the structure of an adjustable nozzle assembly; Fig.11 It is a schematic diagram of the installation and connection structure of the present invention in a straightening machine; Fig.12 It is a structural schematic diagram of the application state of the present invention; Fig.13 It is a schematic diagram of the structure of the cooling of the roller system of the straightening machine in the background technology; Fig.14 It is a schematic diagram of the structure of the cooling inside the roller system in the background technology; In the figure: water pipe main 1, main pipe 101, main pipe water inlet joint 102, branch pipe water outlet joint 103, air pipe main 2, main pipe 201, main pipe air inlet joint 202, branch pipe air outlet joint 203, A manifold assembly 3, inner manifold 301, end plug 3011, through hole 1 3012, outer manifold 302, pipe I 3021, through hole 2 30221, pipe II 3022, retaining ring 303, long branch pipe 304, external thread 1 3041, positioning slot 1 3042, short branch pipe 305, external thread 2 3051, positioning slot 2 3052, Circular cutout 3053, B manifold assembly 4, adjustable nozzle assembly 5, valve body 501, external thread three 5011, annular boss 5012, valve core 502, external thread four 5021, sealing gasket 503, baffle 504, spring 505, adjusting nut 506, nozzle 507, locking nut 508, air blowing nozzle assembly 6, hose 7, solenoid valve I 8, manual valve I 9, solenoid valve II 10, manual valve II 11, one-way valve 12, solenoid valve III 13, manual valve III 14, water source connector 15, air source connector 16, thermal detector 17; Straightening machine roller system 01, straightening machine working roller 011, cooling water inside the roller system 02, cooling water outside the roller system 03, porous header 031, conveying roller table 04, straightening steel plate 05. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the present invention, rather than all the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] A plate straightening machine roller system rapid cooling device, comprising a water pipe main 1, an air pipe main 2, an A header assembly 3, a B header assembly 4, an adjustable nozzle assembly 5, an air blowing nozzle assembly 6, a hose 7, an electromagnetic valve I8, a manual valve I9, an electromagnetic valve II10, a manual valve II11, an electromagnetic valve III13, a manual valve III14, a water source connector 15, an air source connector 16 and a thermal detector 17, wherein the water pipe main 1 and the air pipe main 2 are both tubular structures, connected to the A header assembly 3 and the B header assembly 4; the adjustable nozzle assembly 5 and the air blowing nozzle assembly 6 are ... They are installed on the A manifold assembly 3 and the B manifold assembly 4 in a staggered arrangement; the A manifold assembly 3 and the B manifold assembly 4 are installed inside the roller system of the straightening machine; the main water inlet joint 102 of the water pipe main 1 is connected to the electromagnetic valve Ⅰ8, the manual valve Ⅰ9 and the water source joint 15 through the hose 7, and is also connected to the electromagnetic valve Ⅱ10, the manual valve Ⅱ11 and the air source joint 16; the main air inlet joint 202 of the air pipe main 2 is connected to the electromagnetic valve Ⅲ13, the manual valve Ⅲ14 and the air source joint 16 through the hose 7; the thermal detector 17 is installed at the designated position beside the front and rear rollers 04 of the straightening machine.

[0016] The A manifold assembly 3 comprises an inner manifold 301, an outer manifold 302, a retaining ring 303, a long branch pipe 304 and a short branch pipe 305. The inner manifold 301 and the outer manifold 302 are both thin-walled circular tubes with one end open and the other end closed, and the outer diameter of the inner manifold 301 is smaller than the inner diameter of the outer manifold 302, and the length of the inner manifold 301 is greater than the length of the outer manifold 302. The inner manifold 301 is installed inside the outer manifold 302 and the two are coaxial, and are welded and sealed by the retaining ring 303. The long branch pipe 304 and the short branch pipe 305 are alternately arranged on the inner manifold 301 and the outer manifold 302 along the axis of the manifold, the long branch pipe 304 is connected to the inner manifold 301, and the short branch pipe 305 is connected to the outer manifold 302.

[0017] The inner manifold 301 and the outer manifold 302 are both provided with two rows of equally distributed circular through holes at the same angle along the axis, namely through hole 1 3012 and through hole 2 30221 , and the center distance of through hole 1 3012 is twice the center distance of through hole 2 30221 .

[0018] The B header assembly 4 is provided with a single row of circular through holes, and the rest of the structure and size are consistent with the A header assembly 3.

[0019] The adjustable nozzle assembly 5 and the air blowing nozzle assembly 6 are both assemblies containing nozzles, and the adjustable nozzle assembly 5 contains a pressure threshold adjustment unit. The adjustable nozzle assembly 5 and the air blowing nozzle assembly 6 are respectively installed in the long branch pipe 304 and the short branch pipe 305, and are staggered along the axial direction of the A manifold assembly 3 and the B manifold assembly 4, and the nozzle angles remain consistent.

[0020] It also includes a one-way valve 12 , which is installed between the water pipe main 1 and the air source connector 16 .

[0021] In practical applications, the water main pipe 1 is a tubular structure, which is welded together by a main pipe 101, a main pipe water inlet joint 102 and a branch pipe water outlet joint 103. The main pipe water inlet joint 102 and the branch pipe water outlet joint 103 are kept parallel.

[0022] The main air pipe 2 is a tubular structure, which is welded as a whole by a main pipe 201, a main air inlet joint 202 and a branch air outlet joint 203. The main air inlet joint 202 and the branch air outlet joint 203 are kept vertical.

[0023] The A manifold assembly 3 includes an inner manifold 301, an outer manifold 302, a retaining ring 303, a long branch pipe 304 and a short branch pipe 305. The inner manifold 301 and the outer manifold 302 are both thin-walled circular tubes with one end open and the other end closed. The outer diameter of the inner manifold 301 is smaller than the inner diameter of the outer manifold 302, and the length of the inner manifold 301 is greater than the length of the outer manifold 302. The inner manifold 301 is installed inside the outer manifold 302 and is welded and sealed by the retaining ring 303.

[0024] The outer diameter of the end plug 3011 of the inner header 301 is consistent with the inner diameter of the outer header 302, the inner diameter of the retaining ring 303 is consistent with the outer diameter of the inner header 301, and the outer diameter of the retaining ring 303 is consistent with the inner diameter of the outer header 302. The inner header 301 and the outer header 302 are coaxial.

[0025] The inner manifold 301 and the outer manifold 302 are both provided with two rows of equally distributed circular through holes at the same angle along the axis, namely through hole 1 3012 and through hole 2 30221 , and the center distance of through hole 1 3012 is twice the center distance of through hole 2 30221 .

[0026] The long branch pipe 304 is a thick-walled round pipe as a whole, with an external thread 1 3041 at the outer end and a positioning groove 1 3042 inside; the short branch pipe 305 is shorter than the long branch pipe 304, with an external thread 2 3051 at the outer end, a positioning groove 2 3052 inside, and a circular cutout 3053 at the bottom, the diameter of which is consistent with the inner diameter of the outer header 302, and the rest of the structure and size are consistent with the long branch pipe 304. The outer diameters of the long branch pipe 304 and the short branch pipe 305 are consistent with the through hole 1 3012 and the through hole 2 30221, respectively.

[0027] The long branch pipe 304 cooperates with the through hole 1 3012 and the through hole 2 30221 and is installed on the inner header 301 by welding, and is kept in communication with the inner header 301; the short branch pipe 305 cooperates with the through hole 2 30221 and is installed on the outer header 302 by welding. The long branch pipe 304 and the short branch pipe 305 are staggered along the axial direction on the A header assembly 3, and the positioning notch angles thereof are kept consistent.

[0028] In order to facilitate the construction work, the outer collecting pipe 302 can be divided into pipe I 3021 and pipe I 3022. After the long branch pipe 304 is installed, pipe I 3021 and pipe II 3022 are welded and connected.

[0029] The B header assembly 4 is provided with a single row of circular through holes, and the rest of the structure and size are consistent with the A header assembly 3.

[0030] The A header assembly 3 and the B header assembly 4 are connected to the water pipe main 1 and the gas pipe main 2, wherein the inner header 301 is connected to the branch pipe water outlet joint 103 of the water pipe main 1, and the outer header 302 is connected to the branch pipe gas outlet joint 203 of the gas pipe main 2. The B header assembly 4 is installed on both sides, and multiple groups of A header assemblies 3 are installed in the middle part.

[0031] The adjustable nozzle assembly 5 is mainly composed of a valve body 501, a valve core 502, a sealing gasket 503, a baffle 504, a spring 505, an adjusting nut 506, a nozzle 507, a locking nut 508, etc. The valve body 501 is cylindrical on the outside, with an external thread 3 5011 on the upper part, and an annular boss 5012 with a certain slope on the inside; the valve core 502 is T-shaped as a whole, and its upper lower surface is provided with a certain slope and matched with the annular boss 5012 of the valve body 501, and an external thread 4 5021 is provided on the lower part.

[0032] The sealing gasket 503 is a rubber gasket or other non-metallic sealing material gasket, which is bonded to the upper lower surface of the valve core 502 and cooperates with the annular boss 5012 of the valve body 501 .

[0033] The baffle 504 is a circular plate with a plurality of circular through holes in the middle and along the circumference, and the central circular through hole is clearance-matched with the valve core 502. The spring 505 is installed between the valve body 501 and the baffle 504 and is constrained and adjusted in preload by the adjusting nut 506.

[0034] A positioning notch is provided on the outside of the nozzle 507, and an external thread 5011 on the upper part of the valve body 501 is threadedly connected with an internal thread below the nozzle 507. The two are integrally installed in the long branch pipe 304, positioned by a positioning slot 3042, and the nozzle is fixed by connecting with an external thread 3041 of the long branch pipe 304 through a locking nut 508 to prevent the nozzle from axial movement and circumferential rotation, so that the fixing and installation angles of the nozzle are consistent, thereby ensuring that the water outlet direction of the nozzle is consistent.

[0035] The spring preload force can be adjusted to set the valve opening and closing threshold by adjusting the nut 506. When the water pressure is greater than the spring preload force, the valve core 502 moves along the axis and the valve opens. When the water pressure is less than the spring preload force, the valve core 502 remains in a sealed state and the valve closes.

[0036] The air blowing nozzle assembly 6 is mainly composed of a nozzle 507 and a locking nut 508. The nozzle 507 is installed on the short branch pipe 305 and positioned by the second positioning slot 3052. It is connected and fixed to the second external thread 3051 of the short branch pipe through the locking nut 508.

[0037] The adjustable nozzle assembly 5 and the air blowing nozzle assembly 6 are arranged alternately along the long branch pipe 304 and the axial direction.

[0038] The assembled device of the present invention is installed inside the straightening machine roller system 01, and the main water inlet connector 102 of the water pipe main 1 is connected to the electromagnetic valve Ⅰ8, the manual valve Ⅰ9 and the water source connector 15 through the hose 7, and is also connected to the electromagnetic valve Ⅱ10, the manual valve Ⅱ11, the one-way valve 12 and the air source connector 16; the main air inlet connector 202 of the air pipe main 2 is connected to the electromagnetic valve Ⅲ13, the manual valve Ⅲ14 and the air source connector 16 through the hose 7.

[0039] Through the above connection, the roller cooling device can be connected to the water source and the air source, and the one-way valve 12 can be used to prevent the water source from flowing into the air source system to cause confusion in the system medium.

[0040] The heat detector 17 is installed at a designated position beside the front and rear rollers 04 of the straightening machine to detect the real-time position of the steel plate 05.

[0041] During the production process, when the thermal detector 17 located behind the straightening machine finishes detecting the steel plate signal, the system automatically opens the electromagnetic valve Ⅰ8, the system water pressure is greater than the threshold of the adjustable nozzle assembly 5, and the nozzle discharges water to cool the roller surface of the straightening machine working roller; when the thermal detector 17 located in front of the straightening machine detects the steel plate signal, the system automatically closes the electromagnetic valve Ⅰ8, the residual water pressure is less than the threshold of the adjustable nozzle assembly 5, and the nozzle does not discharge water. At the same time, the system automatically opens the electromagnetic valve Ⅲ13 for a period of time, and uses compressed air to blow away the residual water on the roller surface of the straightening machine working roller to avoid residual water contacting the steel plate and causing surface quality defects of the steel plate.

[0042] When the production rhythm is too fast and the roller system cannot be effectively cooled, the program can be set to optimize on the basis of the above control. When the heat detector 17 behind the straightening machine detects the steel plate signal, the system opens the electromagnetic valve Ⅰ8 and the electromagnetic valve Ⅱ10 at the same time, and can also open the electromagnetic valve Ⅲ13 at the same time, so that the cooling water is in the form of water mist to quickly cool the roller system; when the heat detector 17 in front of the straightening machine detects the steel plate signal, the system automatically closes the electromagnetic valve Ⅰ8, opens the electromagnetic valve Ⅲ13, and can also open the electromagnetic valve Ⅱ10 at the same time, and quickly blows the residual water on the roller surface of the straightening machine working roller through compressed air.

Claims

1. A rapid cooling device for rollers of a plate straightening machine, characterized in that: The invention comprises a water pipe main (1), an air pipe main (2), an A header assembly (3), a B header assembly (4), an adjustable nozzle assembly (5), an air blowing nozzle assembly (6), a hose (7), an electromagnetic valve I (8), a manual valve I (9), an electromagnetic valve II (10), a manual valve II (11), an electromagnetic valve III (13), a manual valve III (14), a water source connector (15), an air source connector (16) and a thermal detector (17). The water pipe main (1) and the air pipe main (2) are both tubular structures and are connected to the A header assembly (3) and the B header assembly (4). The adjustable nozzle assembly (5) and the air blowing nozzle assembly (6) are arranged alternately on the A header assembly (3) and the B header assembly (4). The A manifold assembly (3) and the B manifold assembly (4) are installed inside the roller system of the straightening machine. The main water inlet joint (102) of the water pipe main (1) is connected to the electromagnetic valve I (8), the manual valve I (9) and the water source joint (15) through a hose (7), and is also connected to the electromagnetic valve II (10), the manual valve II (11) and the air source joint (16); the main air inlet joint (202) of the air pipe main (2) is connected to the electromagnetic valve III (13), the manual valve III (14) and the air source joint (16) through a hose (7); the thermal detector (17) is installed at a designated position beside the front and rear rollers (04) of the straightening machine.

2. The rapid cooling device for roller system of plate straightening machine according to claim 1, characterized in that: The A header assembly (3) comprises an inner header (301), an outer header (302), a retaining ring (303), a long branch pipe (304) and a short branch pipe (305); the inner header (301) and the outer header (302) are both thin-walled circular tubes with one end open and the other end closed; the outer diameter of the inner header (301) is smaller than the inner diameter of the outer header (302); the length of the inner header (301) is greater than the length of the outer header (302); the inner header (301) is installed inside the outer header (302) and the two are coaxial, and are welded and sealed by the retaining ring (303); the long branch pipe (304) and the short branch pipe (305) are alternately arranged on the inner header (301) and the outer header (302) along the header axis; the long branch pipe (304) is connected to the inner header (301) and the short branch pipe (305) is connected to the outer header (302).

3. The rapid cooling device for roller system of plate straightening machine according to claim 2, characterized in that: The inner manifold (301) and the outer manifold (302) are both provided with two rows of circular through holes of equal size and uniform distribution at the same angle along the axis, namely through hole one (3012) and through hole two (30221), and the center distance of through hole one (3012) is twice the center distance of through hole two (30221).

4. The rapid cooling device for roller system of plate straightening machine according to claim 3 is characterized by: The B header assembly (4) is provided with a single row of circular through holes, and the rest of the structure and size are consistent with those of the A header assembly (3).

5. The rapid cooling device for roller system of plate straightening machine according to claim 1 is characterized by: The adjustable nozzle assembly (5) and the air-blowing nozzle assembly (6) are both assemblies containing nozzles, and the adjustable nozzle assembly (5) contains a pressure threshold adjustment unit. The adjustable nozzle assembly (5) and the air-blowing nozzle assembly (6) are respectively installed in the long branch pipe (304) and the short branch pipe (305), and are arranged in a staggered manner along the axis direction of the A manifold assembly (3) and the B manifold assembly (4), and the nozzle angles are kept consistent.

6. The rapid cooling device for roller system of plate straightening machine according to claim 1, characterized in that: It also comprises a one-way valve (12), wherein the one-way valve (12) is installed between the water pipe main (1) and the gas source connector (16).

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