Core rod cooling device for seamless steel pipe production and processing and cooling method thereof

Abstract

The invention discloses a core rod cooling device for seamless steel pipe production and processing and a cooling method thereof, and belongs to the technical field of cooling devices. A core rod cooling device for seamless steel pipe production and processing comprises a cooling water tank and a conveying assembly, the top of the cooling water tank is communicated with a spraying assembly, and a pressure applying assembly is arranged on the cooling water tank and a support, so that the surface of a core rod is arranged between the pressure applying assembly and a conveying roller in an attached mode; the filtering assembly is arranged on one side of the cooling water tank and used for filtering impurities in the cooled water, and then the cooled water is sprayed to the surface of the core rod through the spraying assembly; the core rods are attached and extruded through the conveying rollers and the pressing rollers, deformation of the core rods in the cooling process can be prevented, the filter plate is communicated between the cooling water tank and the filter tank, cooling water is recycled, filtered and then enters the cooling water tank to be repeatedly used, the filter plate is prevented from being blocked due to attached impurities in the filtering process, and the production efficiency is improved. And the problem of unsmooth filtering is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cooling devices, and in particular to a mandrel cooling device and a cooling method thereof for producing and processing seamless steel pipes. Background Art

[0002] In the seamless steel pipe rolling production line, the mandrel goes from the return roller to the mandrel feeding device and then to the thumbwheel device claw of the mandrel cooling device. Due to the weight of the mandrel itself and the inertia of falling, the mandrel smashes the thumbwheel device. The impact of the mandrel falling causes the weld at the end of the axle to crack, and the bolts of the middle connecting flange are often sheared off. This greatly reduces the service life of the bearing, axle and thumbwheel. If a fault occurs, the machine must be shut down for maintenance, which affects the production output of seamless steel pipes and increases production costs and the labor intensity of workers.

[0003] The seamless steel pipe mandrel cooling device with the publication number of "CN201783507U" is composed of a mandrel return roller, a grate, a hydraulic cylinder, a cooling water tank, a mandrel stand, a thumbwheel device, and a mandrel lubrication roller. Its characteristics are: the mandrel stand is composed of a support seat, a material baffle plate, a material swing table, and a transition platform; the thumbwheel device is composed of a flange, four thumbwheel grabs, a thumbwheel shaft, a bearing, and a bearing box, so as to avoid the mandrel from the return roller through the mandrel feeding device to the mandrel cooling device to impact the thumbwheel, thereby effectively protecting the thumbwheel from damage, avoiding the intermediate connecting flange bolts being frequently sheared off, and the shortcomings of low service life of bearings, axles, and thumbwheels.

[0004] However, the existing mandrel may produce certain deformation during the cooling process, and the mandrel still needs to be straightened after cooling, which reduces the production efficiency of the seamless steel pipe; at the same time, the water resources used in cooling cannot be recycled, resulting in a waste of water resources. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the core rod may produce certain deformation during the cooling process, and the core rod needs to be straightened after cooling, which reduces the production efficiency of the seamless steel pipe; at the same time, the water resources used for cooling cannot be recycled, resulting in a waste of water resources. A core rod cooling device and a cooling method for seamless steel pipe production and processing are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A core rod cooling device for the production and processing of seamless steel pipes comprises a cooling water tank and a conveying assembly, wherein the top of the cooling water tank is connected to a spray assembly, the conveying assembly comprises conveying rollers in an equidistant array and conveying frames arranged at both ends of the conveying rollers, the cooling water tank is arranged at one end of the conveying frame, and also comprises a support arranged at the other end of the conveying frame; a pressure assembly is arranged on the cooling water tank and the support, and the pressure assembly is used to apply pressure to the cooled core rod so that the surface of the core rod is fitted between the pressure assembly and the conveying roller; a filter assembly is arranged on one side of the cooling water tank, and the filter assembly is used to filter impurities in the cooled water, and then spray it onto the surface of the core rod through the spray assembly.

[0008] Preferably, the spray assembly includes a cooling pipe, the inner wall of the cooling pipe is connected to a spray nozzle, one end of the cooling pipe is connected to a water pump, the spray port of the spray nozzle faces the core rod, the cooling pipe is connected and arranged above the cooling water tank, and a connecting pipe is connected between two adjacent groups of cooling pipes.

[0009] Preferably, a material guide assembly is provided at one end of the conveying frame, and the material guide assembly includes a support seat, on which two groups of material guide rollers are rotatably mounted, wherein the top end of one group of material guide rollers is transmission-connected to a motor, and gears are provided at the bottom ends of both groups of material guide rollers, and a transition wheel is meshed between the two groups of gears.

[0010] Preferably, the pressure assembly includes two groups of floating frames and pressure rollers rotatably connected to the two groups of floating frames, and first support rods are symmetrically connected to both ends of the outer walls of the floating frames, wherein one end of two groups of the first support rods is slidably connected to the top of the cooling water tank, and one end of the other two groups of the first support rods is slidably connected to the top of the support.

[0011] Preferably, the cooling water tank and the top of the support are both provided with guide holes, the first support rod is slidably inserted into the guide hole, a limit plate is provided on the outer wall of the first support rod, and the limit plate is respectively connected to the cooling water tank and the upper surface of the support with a first spring.

[0012] Preferably, a cavity is provided in the pressing roller, and a water hole is provided through the pressing roller. One end of the pressing roller is connected with a bent pipe, and the bent pipe is connected with a cooling pipe through a branch pipe.

[0013] Preferably, the filter assembly comprises a filter box connected to one side of the cooling water tank, and the bottom surface of the filter box is 55-75 mm lower than the bottom surface of the cooling water tank;

[0014] The filter assembly also includes a guide plate obliquely arranged between the filter box and the support, one end of the guide plate is symmetrically provided with two groups of lifting ears, a second support rod is provided on the top of the support, and the lifting ears are connected to both ends of the second support rod.

[0015] Preferably, one end of the filter box is provided with a water inlet matching one end of the guide plate, a floating plate is elastically connected in the filter box, a wing plate is connected to the floating plate, a second spring is connected between adjacent wing plates, a filter plate is installed in the filter box at a communication position between the filter box and the cooling water tank, the wing plate is slidably connected to one side of the filter plate, a guide bar is connected to one side of the wing plate, and the guide bar is slidably connected to the filter plate;

[0016] A cushion block is connected to the bottom of one side of the filter plate, a guide shaft is connected to the cushion block, a guide sleeve is connected to the bottom of the floating plate, and the guide shaft is slidably connected in the guide sleeve through a third spring.

[0017] Preferably, connecting shafts are connected on both sides of the floating frame, a rotating shaft is rotatably connected inside the guide plate, a flap is provided in an annular equidistant array on the surface of the rotating shaft, and traction ropes are connected between both ends of the rotating shaft and the connecting shaft.

[0018] A cooling method, based on a mandrel cooling device for seamless steel pipe production and processing, comprises the following steps:

[0019] Step 1: Place one end of the mandrel between two sets of guide rollers, and start the motor to drive the mandrel to move into the conveying assembly;

[0020] Step 2: During the conveying process of the core rod, the pressure roller and the conveying roller are used to fit the core rod, and at the same time, the water pump is started to spray and cool the core rod through the spray nozzle;

[0021] Step 3: The cooling water is guided by the guide plate to flow into the filter box, and the impurities are filtered through the filter plate, and then flow into the cooling water tank. After cooling, it is pumped into the cooling pipe through the water pump to continue cooling the core rod.

[0022] Compared with the prior art, the present invention provides a mandrel cooling device for seamless steel pipe production and processing, which has the following beneficial effects:

[0023] 1. The mandrel cooling device for the production and processing of seamless steel pipes is provided with a pressing roller above the conveying roller, and a floating frame connected elastically is used to support the rotatably connected pressing roller, so that the pressing roller and the conveying roller are kept in contact during the conveying of the mandrel, thereby preventing the mandrel from being deformed during the cooling process;

[0024] 2. The core rod cooling device for the production and processing of seamless steel pipes recycles and filters the cooling water by setting a filter box. After the cooling water enters the filter box through the water inlet, it hits the wing plate. The impact force of the water flow changes, which causes the second spring to drive the wing plate to move in contact with the filter plate under the reciprocating action of force and reset, thereby cleaning the filter plate to prevent the filter plate from being blocked due to attached impurities during the filtering process, effectively avoiding poor filtering caused by blockage;

[0025] 3. The core rod cooling device for the production and processing of seamless steel pipes has a rotating shaft arranged in the guide plate, and utilizes the power generated by the flow of recovered cooling water in the guide plate to impact the flap to drive the rotating shaft to rotate. During the rotation of the rotating shaft, the traction rope can be wound up, thereby pulling the pressure roller in the floating frame downward, and always rotating in close contact with the core rod on the conveying roller. Not only will there be no resistance to the movement of the core rod, but the pressure roller and the conveying roller can also always squeeze the core rod to prevent the core rod from deformation during the cooling process.

[0026] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention utilizes conveying rollers and pressure rollers to fit and extrude the core rod, which can prevent the core rod from deforming during the cooling process. The filter plate is connected between the cooling water tank and the filter box, and the cooling water is recovered and filtered before entering the cooling water tank for repeated use. In addition, the filter plate is prevented from being blocked by attached impurities during the filtering process, thereby effectively avoiding poor filtering caused by blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the main perspective structure of a mandrel cooling device for seamless steel pipe production and processing proposed by the present invention;

[0028] Figure 2 This is a rear view schematic diagram of the internal structure of a mandrel cooling device for seamless steel pipe production and processing proposed by the present invention;

[0029] Figure 3 It is a partial bottom view structural schematic diagram of a mandrel cooling device for seamless steel pipe production and processing proposed by the present invention;

[0030] Figure 4 A schematic cross-sectional view of the structure of a pressure roller of a mandrel cooling device for producing and processing seamless steel pipes proposed by the present invention;

[0031] Figure 5 A schematic diagram of the internal structure of a filter box of a core rod cooling device for producing and processing seamless steel pipes proposed by the present invention;

[0032] Figure 6 It is a partially enlarged schematic diagram of the wing plate connection structure of a mandrel cooling device for producing and processing seamless steel pipes proposed by the present invention;

[0033] Figure 7 This is a schematic diagram of the connection structure of the filter plate and wing plate of a mandrel cooling device for the production and processing of seamless steel pipes proposed by the present invention;

[0034] Figure 8 The present invention provides a schematic diagram of the structure of a rotating shaft traction roller of a mandrel cooling device for producing and processing seamless steel pipes.

[0035] In the figure: 1, cooling water tank; 2, filter box; 3, support; 4, conveyor frame; 5, conveyor roller; 6, pressure roller; 7, floating frame; 8, cooling pipe; 9, spray nozzle; 10, water pump; 11, water hole; 12, first support rod; 13, first spring; 14, guide roller; 15, support seat; 16, motor; 17, lifting ear; 18, guide plate; 19, elbow; 20, branch pipe; 21, cavity; 22, guide To the hole; 23, the second support rod; 24, the rotating shaft; 25, the flap; 26, the traction rope; 27, the connecting shaft; 28, the gear; 29, the transition wheel; 30, the water inlet; 31, the wing plate; 32, the second spring; 33, the floating plate; 34, the filter plate; 35, the guide shaft; 36, the guide sleeve; 37, the third spring; 38, the cushion block; 39, the guide bar; 40, the connecting pipe; 41, the limit plate; 42, the protective cover. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0038] Example:

[0039] Reference Figure 1-Figure 8 A core rod cooling device for seamless steel pipe production and processing includes a cooling water tank 1 and a conveying assembly. The top of the cooling water tank 1 is connected to a spray assembly. The conveying assembly includes conveying rollers 5 in an equidistant array and conveying frames 4 arranged at both ends of the conveying rollers 5. The cooling water tank 1 is arranged at one end of the conveying frame 4, and also includes a support 3 arranged at the other end of the conveying frame 4.

[0040] In this embodiment, a conveying assembly is arranged on the cooling water tank 1 and the support 3, and two groups of conveying frames 4 support and rotate the conveying rollers 5. The conveying rollers 5 are used to convey the mandrel and cool it during the conveying process.

[0041] It should be noted that, according to the specifications of the mandrel, those skilled in the art know that a driving device is provided at one end of the conveying roller 5 and a transmission assembly is provided between the conveying rollers 5. Starting the driving device can drive the conveying rollers 5 to rotate, thereby realizing the conveyance of the mandrel.

[0042] The spray assembly includes a cooling pipe 8, the inner wall of the cooling pipe 8 is connected to a spray nozzle 9, one end of the cooling pipe 8 is connected to a water pump 10, the spray port of the spray nozzle 9 faces the core rod, the cooling pipe 8 is connected and arranged above the cooling water tank 1, and a connecting pipe 40 is connected between two adjacent groups of cooling pipes 8.

[0043] In this embodiment, the cooling pipe 8 is connected to the top of the cooling water tank 1, and the inner wall of the cooling pipe 8 is connected to the spray nozzle 9. During the transportation of the core rod, the water pump 10 is started to pump the cooling water in the cooling water tank 1 into the cooling pipe 8 and spray it on the surface of the core rod through the spray nozzle 9.

[0044] A material guide assembly is provided at one end of the conveying frame 4, and the material guide assembly includes a support seat 15, on which two groups of material guide rollers 14 are rotatably mounted, one group of material guide rollers 14 is connected to the top end of a motor 16 for transmission, and the bottom ends of the two groups of material guide rollers 14 are provided with gears 28, and a transition wheel 29 is meshed between the two groups of gears 28.

[0045] In this embodiment, a material guide assembly is provided at one end of the conveying frame 4, and one end of the mandrel is guided onto the conveying roller 5 by the material guide assembly. For mandrels with smaller specifications, the material guide assembly can also be used to push the mandrel forward.

[0046] Specifically, the motor 16 is started to drive one group of support seats 15 and the guide rollers 14 in the support seats 15 to rotate, thereby driving the gear 28 at the bottom to rotate, and the transition wheel 29 meshing with the gear 28 rotates, thereby driving the other group of guide rollers 14 to rotate. The two groups of guide rollers 14 rotate relative to each other, and the auxiliary conveying rollers 5 guide and convey the core rod.

[0047] A pressure assembly is provided on the cooling water tank 1 and the support 3, and the pressure assembly is used to apply pressure to the cooled core rod so that the surface of the core rod is fitted between the pressure assembly and the conveying roller 5; the pressure assembly includes two groups of floating frames 7 and pressure rollers 6 rotatably connected to the two groups of floating frames 7, and first support rods 12 are symmetrically connected to both ends of the outer wall of the floating frames 7, wherein one end of two groups of first support rods 12 is slidably connected to the top of the cooling water tank 1, and one end of the other two groups of first support rods 12 is slidably connected to the top of the support 3.

[0048] In this embodiment, a pressure roller 6 is rotatably installed above the conveying roller 5 through two groups of floating frames 7, and a first support rod 12 is provided on both sides of the floating frame 7 to slide above the cooling water tank 1 and the support 3 respectively, so that the pressure roller 6 used for fitting the core rod can change the distance between the conveying roller 5 and the pressure roller 6 according to the specifications of the core rod, thereby expanding the application range of the pressure component.

[0049] A guide hole 22 is provided on the top of the cooling water tank 1 and the support 3, and the first support rod 12 is slidably inserted into the guide hole 22. A limit plate 41 is provided on the outer wall of the first support rod 12, and a first spring 13 is connected between the limit plate 41 and the upper surface of the cooling water tank 1 and the support 3 respectively.

[0050] Specifically, the first support rod 12 is slidably inserted into the cooling water tank 1 and the top of the support 3 through the guide hole 22. At the same time, a limiting plate 41 is arranged on the surface of the first support rod 12, and a first spring 13 is arranged between the limiting plate 41 and the cooling water tank 1 and the support 3. The first spring 13 not only realizes the distance between the conveying roller 5 and the pressure roller 6, but also can elastically support the pressure roller 6.

[0051] A cavity 21 is provided in the pressing roller 6 , and a water hole 11 is provided through the pressing roller 6 . One end of the pressing roller 6 is connected to a bent pipe 19 , and the bent pipe 19 is connected to the cooling pipe 8 through a branch pipe 20 .

[0052] In this embodiment, a cavity 21 is opened in the pressing roller 6, and the pressing roller 6 and one end of the cooling pipe 8 are connected by using a bend pipe 19 and a branch pipe 20. After starting the water pump 10, cold water can also be pumped into the branch pipe 20 through the cooling pipe 8, and then enter the cavity 21 through the bend pipe 19. Since a water hole 11 is opened in the pressing roller 6, the pressing roller 6 can also spray cooling water on the core rod, further improving the cooling effect of the equipment on the core rod.

[0053] The filter assembly is arranged on one side of the cooling water tank 1, and is used to filter impurities from the cooled water, and then spray it onto the surface of the core rod through the spray assembly. The filter assembly includes a filter box 2 connected to one side of the cooling water tank 1, and the bottom surface of the filter box 2 is 55-75mm lower than the bottom surface of the cooling water tank 1.

[0054] In this embodiment, a filter box 2 is connected to one side of the cooling water tank 1, and the bottom surface of the filter box 2 is set 55-75mm lower than the bottom surface of the cooling water tank 1, preferably 70mm. The height difference between the two can precipitate the filtered impurities and prevent the impurities from clogging the connecting port between the cooling water tank 1 and the filter box 2.

[0055] The filter assembly also includes a guide plate 18 obliquely arranged between the filter box 2 and the support 3. Two sets of lifting ears 17 are symmetrically arranged at one end of the guide plate 18. A second support rod 23 is arranged on the top of the support 3. The lifting ears 17 are connected to both ends of the second support rod 23.

[0056] An inclined guide plate 18 is arranged below the conveying roller 5, and one end of the guide plate 18 is connected by the lifting ear 17 and the second support rod 23. The other end of the guide plate 18 is lower than the end connected with the lifting ear 17 and is connected to the filter box 2, so as to smoothly guide the cooling water into the filter box 2 as much as possible.

[0057] A water inlet 30 matching one end of the guide plate 18 is provided at one end of the filter box 2, a floating plate 33 is elastically connected inside the filter box 2, a wing plate 31 is connected to the floating plate 33, a second spring 32 is connected between adjacent wing plates 31, a filter plate 34 is installed in the filter box 2 at a connecting position between the filter box 2 and the cooling water tank 1, the wing plate 31 is slidably connected to one side of the filter plate 34, a guide bar 39 is connected to one side of the wing plate 31, and the guide bar 39 and the filter plate 34 are slidably connected;

[0058] In this embodiment, a floating plate 33 is slidably connected to one side of the filter plate 34, and a wing plate 31 is elastically connected to the top of the floating plate 33 through a second spring 32. The wing plate 31 is slidably connected to one side of the filter plate 34 through a guide bar 39. After the cooling water enters the filter box 2 through the water inlet 30, it hits the wing plate 31, and the second spring 32 is compressed, pulling the wing plate 31 to scrape one side of the filter plate 34. The impact force of the water flow changes, and the second spring 32 drives the wing plate 31 to move in contact with the filter plate 34 under the reciprocating action of force and reset, thereby cleaning the filter plate 34 to prevent the filter plate 34 from being blocked by attached impurities during the filtering process, effectively avoiding poor filtering caused by blockage.

[0059] It should be noted that protective covers 42 are provided on both sides of the guide plate 18 , which can not only support the multiple groups of cooling pipes 8 , but also prevent other impurities from falling into the guide plate 18 .

[0060] A cushion block 38 is connected to the bottom of one side of the filter plate 34 , a guide shaft 35 is connected to the cushion block 38 , a guide sleeve 36 is connected to the bottom of the floating plate 33 , and the guide shaft 35 is slidably connected in the guide sleeve 36 via a third spring 37 .

[0061] It should be noted that a guide sleeve 36, a guide shaft 35 and a third spring 37 are sequentially arranged between the floating plate 33 and the filter plate 34. The floating plate 33 is used to limit the upper floating plate 33 to ensure the scraping area of ​​the floating plate 33 and the clearing effect of the filter plate 34.

[0062] Connecting shafts 27 are connected to both sides of the floating frame 7, and a rotating shaft 24 is rotatably connected inside the guide plate 18. A flap 25 is arranged in an annular equidistant array on the surface of the rotating shaft 24, and a traction rope 26 is connected between both ends of the rotating shaft 24 and the connecting shaft 27.

[0063] In this embodiment, a rotating shaft 24 is rotatably arranged in the guide plate 18, and a flap 25 is arranged on the surface of the rotating shaft 24. The power generated by the recovered cooling water flowing in the guide plate 18 is used to impact the flap 25, thereby driving the rotating shaft 24 in the guide plate 18 to rotate. Since a traction rope 26 is connected between the rotating shaft 24 and the connecting shaft 27, the traction rope 26 can be wound up during the rotation of the rotating shaft 24, thereby pulling the floating frame 7 and the pressure roller 6 therein downward through the connecting shaft 27, and always rotating in close contact with the core rod on the conveying roller 5. Not only will no resistance be generated to the movement of the core rod, but the pressure roller 6 and the conveying roller 5 can also always squeeze the core rod to prevent the core rod from deforming during the cooling process.

[0064] In the present invention, the motor 16 is started to drive one set of the support seats 15 and the guide rollers 14 in the support seats 15 to rotate, thereby driving the gear 28 at the bottom to rotate, and the transition wheel 29 meshing with the gear 28 rotates, thereby driving the other set of guide rollers 14 to rotate, and the two sets of guide rollers 14 rotate relatively, and the auxiliary conveying rollers 5 guide and convey the mandrel;

[0065] Alternatively, according to the specifications of the mandrel, the driving device can be started to drive the conveying roller 5 to rotate, and the guide roller 14 can be used to convey the mandrel. At the same time, the water pump 10 is started to pump the cooling water in the cooling water tank 1 into the cooling pipe 8, and spray the cooling water on the surface of the mandrel through the spray nozzle 9. First support rods 12 are arranged on both sides of the floating frame 7 to slide above the cooling water tank 1 and the support 3 respectively, so that the pressure roller 6 used for fitting the mandrel can change the distance between the conveying roller 5 and the pressure roller 6 according to the specifications of the mandrel, thereby expanding the application range of the pressure component.

[0066] After starting the water pump 10, cold water can also be pumped into the branch pipe 20 through the cooling pipe 8, and then enter the cavity 21 through the elbow 19. Since the pressure roller 6 is provided with a water hole 11, the pressure roller 6 can also spray cooling water on the mandrel, further improving the cooling effect of the device on the mandrel.

[0067] After the cooling water enters the filter box 2 through the water inlet 30, it hits the wing plate 31, the second spring 32 is compressed, and the wing plate 31 is pulled to scrape on one side of the filter plate 34. The impact force of the water flow changes, which causes the second spring 32 to drive the wing plate 31 to move against the filter plate 34 under the reciprocating action of force and reset, thereby cleaning the filter plate 34 and preventing the filter plate 34 from being blocked by attached impurities during the filtering process, effectively avoiding poor filtering caused by blockage;

[0068] The power generated by the flow of recovered cooling water in the guide plate 18 is utilized to impact the flap 25, thereby driving the rotating shaft 24 in the guide plate 18 to rotate, and winding the traction rope 26, thereby connecting the connecting shaft 27 to pull the pressure roller 6 in the floating frame 7 downward, and always rotating in close contact with the core rod on the conveying roller 5, which not only does not generate resistance to the movement of the core rod, but also enables the pressure roller 6 and the conveying roller 5 to always squeeze the core rod to prevent the core rod from deformation during the cooling process.

[0069] The present invention also discloses a cooling method based on a mandrel cooling device for producing and processing seamless steel pipes, comprising the following steps:

[0070] Step 1: Place one end of the mandrel between two sets of guide rollers 14, and start the motor 16 to drive the mandrel to move into the conveying assembly;

[0071] Step 2: During the conveying process of the core rod, the pressure roller 6 and the conveying roller 5 are used to fit the core rod, and at the same time, the water pump 10 is started to spray and cool the core rod through the spray nozzle 9;

[0072] Step 3: The cooling water is guided by the guide plate 18 to flow into the filter box 2, and the impurities are filtered through the filter plate 34, and then flows into the cooling water tank 1. After cooling, it is pumped into the cooling pipe 8 through the water pump 10 to continue cooling the core rod.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mandrel cooling device for seamless steel pipe production and processing, comprising a cooling water tank (1) and a conveying assembly, wherein the top of the cooling water tank (1) is connected to a spray assembly, the conveying assembly comprises conveying rollers (5) in an equidistant array and a conveying frame (4) arranged at both ends of the conveying rollers (5), the cooling water tank (1) is arranged at one end of the conveying frame (4), and is characterized in that: It also includes a support (3) arranged at the other end of the conveying frame (4); The cooling water tank (1) and the support (3) are provided with a pressure component, and the pressure component is used to apply pressure to the cooled mandrel, and the mandrel is arranged between the pressure component and the conveying roller (5); A filter assembly is arranged on one side of the cooling water tank (1), and is used to filter impurities from the cooled water, and then spray the impurities onto the surface of the core rod via the spray assembly.

2. A mandrel cooling device for seamless steel pipe production and processing according to claim 1, characterized in that: The spray assembly comprises a cooling pipe (8), the inner wall of the cooling pipe (8) is connected to a spray nozzle (9), one end of the cooling pipe (8) is connected to a water pump (10), the spray port of the spray nozzle (9) faces the core rod, the cooling pipe (8) is connected and arranged above the cooling water tank (1), and a connecting pipe (40) is connected between two adjacent groups of cooling pipes (8).

3. A mandrel cooling device for seamless steel pipe production and processing according to claim 1, characterized in that: A material guide assembly is arranged at one end of the conveying frame (4), and the material guide assembly comprises a support seat (15), on which two groups of material guide rollers (14) are rotatably mounted, wherein the top end of one group of the material guide rollers (14) is transmission-connected to a motor (16), and the bottom ends of the two groups of the material guide rollers (14) are both provided with gears (28), and a transition wheel (29) is meshed between the two groups of the gears (28).

4. A mandrel cooling device for seamless steel pipe production and processing according to claim 1, characterized in that: The pressure-applying assembly comprises two groups of floating frames (7) and pressure rollers (6) rotatably connected to the two groups of floating frames (7), and first support rods (12) are symmetrically connected to both ends of the outer wall of the floating frames (7), wherein one end of two groups of the first support rods (12) are slidably connected to the top of the cooling water tank (1), and one end of the other two groups of the first support rods (12) are slidably connected to the top of the support (3).

5. A mandrel cooling device for seamless steel pipe production and processing according to claim 4, characterized in that: The cooling water tank (1) and the support (3) are both provided with guide holes (22), the first support rod (12) is slidably inserted into the guide hole (22), and a limit plate (41) is provided on the outer wall of the first support rod (12), and the limit plate (41) is respectively connected to the cooling water tank (1) and the upper surface of the support (3) with a first spring (13).

6. A mandrel cooling device for seamless steel pipe production and processing according to claim 4, characterized in that: A cavity (21) is provided in the pressing roller (6), and a water hole (11) is provided through the pressing roller (6). One end of the pressing roller (6) is connected to a curved pipe (19), and the curved pipe (19) is connected to the cooling pipe (8) through a branch pipe (20).

7. A mandrel cooling device for seamless steel pipe production and processing according to claim 4, characterized in that: The filter assembly comprises a filter box (2) which is connected to one side of the cooling water tank (1), and the bottom surface of the filter box (2) is 55-75 mm lower than the bottom surface of the cooling water tank (1); The filter assembly further comprises a guide plate (18) obliquely arranged between the filter box (2) and the support (3), two groups of lifting ears (17) are symmetrically arranged at one end of the guide plate (18), a second support rod (23) is arranged at the top of the support (3), and the lifting ears (17) are connected to both ends of the second support rod (23).

8. A mandrel cooling device for seamless steel pipe production and processing according to claim 7, characterized in that: One end of the filter box (2) is provided with a water inlet (30) matching with one end of the guide plate (18); a floating plate (33) is elastically connected inside the filter box (2); a wing plate (31) is connected to the floating plate (33); a second spring (32) is connected between adjacent wing plates (31); a filter plate (34) is installed inside the filter box (2) at a position where the filter box (2) and the cooling water tank (1) are connected; the wing plate (31) is slidably connected to one side of the filter plate (34); a guide bar (39) is connected to one side of the wing plate (31); the guide bar (39) and the filter plate (34) are slidably connected; A cushion block (38) is connected to the bottom of one side of the filter plate (34), a guide shaft (35) is connected to the cushion block (38), a guide sleeve (36) is connected to the bottom of the floating plate (33), and the guide shaft (35) is slidably connected to the guide sleeve (36) via a third spring (37).

9. A mandrel cooling device for seamless steel pipe production and processing according to claim 7, characterized in that: The floating frame (7) is connected to connecting shafts (27) on both sides, the guide plate (18) is rotatably connected to a rotating shaft (24), the surface of the rotating shaft (24) is provided with flaps (25) in an annular equidistant array, and traction ropes (26) are connected between both ends of the rotating shaft (24) and the connecting shaft (27).

10. A cooling method, comprising a mandrel cooling device for seamless steel pipe production and processing according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Place one end of the mandrel between two sets of guide rollers (14), and start the motor (16) to drive the mandrel to move into the conveying assembly; Step 2: During the conveying process of the core rod, the pressure roller (6) and the conveying roller (5) are used to fit the core rod, and at the same time, the water pump (10) is started to spray and cool the core rod through the spray nozzle (9); Step 3: The cooling water is guided by the guide plate (18) to flow into the filter box (2), where impurities are filtered through the filter plate (34), and then flows into the cooling water tank (1). After cooling, the cooling water is pumped into the cooling pipe (8) through the water pump (10) to continue cooling the core rod.

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