Rapid cooling device in a wire drawing annealing furnace

Abstract

The utility model discloses a quick cooling device in wire drawing annealing furnace, include: box, be surrounded with first sealing ring on the inner wall of box, be provided with cavity and cooling tank in the box, be provided with water inlet hole with the intercommunication of cavity on the box, be provided with the water outlet that communicates cavity and cooling tank on the partition between cavity and cooling tank, be provided with guide pulley in the sealed rotation of cooling tank, be provided with incoming line groove and outgoing line groove on the box, be hinged with the apron on the left side wall of box, be provided with the arc buffer zone of convex setting on the inboard wall of apron, be provided with a plurality of buffer groove in the circumference on the arc buffer zone, be provided with the backwater mouth on the apron in the arc buffer zone, be provided with the U type water seal groove that communicates with backwater mouth on the outboard wall of apron. The utility model has the advantages of: can improve the cooling effect of wire rod.

Description

Technical Field

[0001] This utility model relates to cooling devices, and more particularly to rapid cooling devices in wire drawing annealing furnaces. Background Technology

[0002] After annealing in the annealing furnace of the wire drawing machine, the wire needs to be cooled. The most common cooling method is to install a cooling tank and a water collection tank on the wire drawing machine. Cooling water is injected into the cooling tank, and the annealed wire is cooled by this water. Because the high-temperature wire continuously enters the cooling tank for water cooling, the temperature of the cooling water in the tank rises. Therefore, cooling water needs to be continuously injected into the tank to stabilize and maintain a lower temperature. The cooling water overflows from the cooling tank and enters the water collection tank for recycling. In actual use, when cooling water is injected into the cooling tank, eddies are formed, causing uneven cooling of the wire and affecting the cooling effect. Furthermore, the large temperature difference between the annealed wire and the cooling water can easily lead to phase transformation stress concentration in the wire. Utility Model Content

[0003] The purpose of this invention is to provide a rapid cooling device for wire drawing annealing furnaces that can ensure the cooling effect of wire.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a rapid cooling device in a wire drawing annealing furnace, comprising: a housing, a first sealing ring groove surrounding the inner wall of the housing, a first sealing ring being fitted into the first sealing ring groove, a cavity and a cooling tank being provided in the housing, the volume of the cooling tank being larger than the volume of the cavity, a water inlet hole communicating with the cavity being provided on the housing, a plurality of water outlets communicating with the cavity and the cooling tank being provided on the partition between the cavity and the cooling tank, a guide wheel being rotatably and sealed in the cooling tank, and an inlet groove and an outlet groove communicating with the cooling tank being provided on the housing located on the right side of the cooling tank. The enclosure has two cable passage holes on the right side wall that connect to the inlet and outlet cable passages, respectively. A cover plate is hinged to the left side wall of the enclosure. An arc-shaped buffer strip protrudes from the inner side wall of the cover plate, and several buffer grooves are evenly distributed around the circumference of the arc-shaped buffer strip. A return water inlet is provided on the cover plate located inside the arc-shaped buffer strip. A U-shaped water seal groove connected to the return water inlet is provided on the outer side wall of the cover plate. The cover plate is closed on the enclosure and fits against the first sealing ring. The cover plate and the enclosure are locked together by a snap lock. When the cover plate is closed on the enclosure, the arc-shaped buffer strip blocks the outside of the guide wheel and does not interfere with the inlet and outlet cable passages.

[0005] Furthermore, in the aforementioned rapid cooling device in the wire drawing annealing furnace, two return water ports are symmetrically arranged on the top and bottom of the cover plate, and two U-shaped water seal grooves are arranged on the outer wall of the cover plate. The two U-shaped water seal grooves are respectively connected to the two return water ports. Four water outlets are arranged on the box body, and the four water outlets are distributed in a circle with the axis of the guide wheel as the center.

[0006] Furthermore, in the aforementioned rapid cooling device in the wire drawing annealing furnace, a baffle is slidably arranged on the cover plate, the baffle covers the water return port, and a vertical elongated hole is provided on each side of the baffle, through which a bolt is threaded and connected to the cover plate.

[0007] Furthermore, in the aforementioned rapid cooling device of the wire drawing annealing furnace, an inclined baffle is provided protruding on the outer wall of the cover plate located above the U-shaped water seal groove.

[0008] Furthermore, in the aforementioned rapid cooling device in the wire drawing annealing furnace, a drain hole connected to the cooling tank is provided at the bottom of the chamber, and a drain valve is provided on the drain hole.

[0009] Furthermore, in the aforementioned rapid cooling device in the wire drawing annealing furnace, the inlet slot is located below the outlet slot, an inlet ceramic eye is provided on the partition between the inlet slot and the cooling tank, and an outlet ceramic eye is provided on the partition between the outlet slot and the cooling tank.

[0010] Furthermore, in the aforementioned rapid cooling device of the wire drawing annealing furnace, wire boxes are provided in both the inlet and outlet wire slots. The connection structure between the wire boxes and the inlet and outlet wire slots is the same. The connection structure between the inlet wire slot and the wire box is as follows: a second liquid inlet hole communicating with the inlet wire slot is provided on the housing; the wire box is fixedly installed in the inlet wire slot; a first liquid inlet hole and a second sealing ring are provided on one side wall of the wire box; the side wall of the wire box with the second sealing ring is attached to the slot wall of the inlet wire slot and then connected by bolts; the first liquid inlet hole and the second liquid inlet hole are connected; and a through-hole is provided in the wire box. The mounting holes on the left and right end walls are connected to the first liquid inlet hole. A fixed guide tube and a left retaining spring are installed at the left end of the mounting hole. A conical positioning hole is provided at the right end of the fixed guide tube. A movable guide tube and a right retaining spring are installed at the right end of the mounting hole. A conical positioning head is provided at the left end of the movable guide tube. Several guide grooves are evenly distributed around the circumference of the conical positioning head. A butterfly spring is provided between the movable guide tube and the right retaining spring. Under the elastic force of the butterfly spring, the movable guide tube abuts against the fixed guide tube. The conical positioning head on the movable guide tube abuts against the conical positioning hole on the fixed guide tube. The fixed guide tube abuts against the left retaining spring.

[0011] The advantages of this invention are as follows: the water injection volume of the inlet and the size of the return outlet can be adjusted according to the thickness of the wire, thus ensuring that the temperature of the cooling water in the cooling tank is not too high; moreover, the cooling water is injected into the cavity and then flows into the cooling tank through the outlet, so that the cooling water in the cooling tank is not affected by the water injection and will not generate eddies. The eddies generated when the guide wheel rotates will be broken by the arc-shaped buffer belt, ensuring a stable flow of cooling water in the cooling tank. This allows the wire to be cooled evenly and improves the cooling effect of the wire; the gradient cooling of the wire through the coolant in the inlet slot, the coolant in the cooling tank, and the coolant in the outlet slot can prevent phase change stress concentration. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the rapid cooling device in the wire drawing annealing furnace of this utility model when it is turned on.

[0013] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the AA direction.

[0014] Figure 3 yes Figure 1 A schematic diagram of the structure from a top-down view.

[0015] Figure 4 yes Figure 3 A schematic diagram of the connection between the middle conductor box and the outlet slot.

[0016] Figure 5 This is a schematic diagram of the rapid cooling device in the wire drawing annealing furnace of this utility model when it is closed. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0018] like Figures 1-5As shown, the rapid cooling device in the wire drawing annealing furnace of this utility model includes: a box body 1, a first sealing ring groove is provided on the inner wall of the box body 1, a first sealing ring 11 is installed in the first sealing ring groove, a cavity 12 and a cooling tank 13 are provided in the box body 1, the volume of the cooling tank 13 is larger than the volume of the cavity 12, a drain hole 10 connected to the cooling tank 13 is provided at the bottom of the box body 1, a drain valve is provided on the drain hole 10, the drain valve is normally closed, and the drain valve is only opened when the cooling water in the cooling tank 13 needs to be drained, so that the cooling water in the cooling tank 13 is discharged out through the drain hole 10. A water inlet hole 14 communicating with the cavity 12 is provided on the housing 1. Four water outlets 15 communicating with the cavity 12 and the cooling tank 13 are provided on the partition between the cavity 12 and the cooling tank 13. A guide wheel 2 is rotatably and sealed in the cooling tank 13. The four water outlets 15 are distributed in a circle with the axis of the guide wheel 2 as the center. An inlet slot and an outlet slot communicating with the cooling tank 13 are provided on the housing 1 located on the right side of the cooling tank 13. Two cable inlets and outlet slots communicating with the cable inlet and outlet slots are provided on the right side wall of the housing 1. The cable passage 19 has an inlet slot located below the outlet slot. An inlet ceramic eye 16 is provided on the partition between the inlet slot and the cooling tank 13, and an outlet ceramic eye 17 is provided on the partition between the outlet slot and the cooling tank 13. A wire box 3 is provided in both the inlet and outlet slots. The connection structure between the wire box 3 and the inlet and outlet slots is the same. The connection structure between the inlet slot and the wire box 3 is as follows: a second liquid inlet hole 18 connected to the inlet slot is provided on the housing 1. The wire box 3 is fixedly installed in the inlet slot. A first liquid inlet 31 and a second sealing ring 32 are provided on one side wall of the wire box 3. The side wall of the wire box 3 with the second sealing ring 32 is attached to the groove wall of the wire inlet groove and then connected by bolts. The first liquid inlet 31 is connected to the second liquid inlet 18. An installation hole 33 is provided in the wire box 3, penetrating the left and right end walls. The installation hole 33 is connected to the first liquid inlet 31. A fixing guide tube 34 and a left retaining spring 35 are clamped at the left end of the installation hole 33. A tapered positioning hole 341 is provided at the right end of the fixing guide tube 34. The right end of the mounting hole 33 is fitted with a movable guide tube 36 and a right retaining spring 37. A conical positioning head is provided at the left end of the movable guide tube 36. Several guide grooves 361 are evenly distributed around the circumference of the conical positioning head. A butterfly spring 38 is provided between the movable guide tube 36 and the right retaining spring 37. Under the elastic force of the butterfly spring 38, the movable guide tube 36 abuts against the fixed guide tube 34. The conical positioning head on the movable guide tube 36 abuts against the conical positioning hole 341 on the fixed guide tube 34. The fixed guide tube 34 abuts against the left retaining spring 35.Cooling water is introduced into the wire box 3 through the second inlet hole 18 and the first inlet hole 31. After entering the mounting hole 33, the cooling water flows into the conical positioning hole 341 along the guide groove 361 on the conical positioning head, and then flows out from the fixed guide tube 34 into the inlet slot or outlet slot. A small portion of the coolant in the inlet slot flows into the cooling tank 13 through the inlet ceramic eye 16, and most of the coolant flows out through the wire passage hole 19 connected to the inlet slot. A small portion of the coolant in the outlet slot flows into the cooling tank 13 through the outlet ceramic eye 17, and most of the coolant flows out through the wire passage hole 19 connected to the outlet slot.

[0019] A cover plate 4 is hinged to the left side wall of the housing 1. An arc-shaped buffer strip 41 protrudes from the inner side wall of the cover plate 4. Several buffer grooves 411 are evenly distributed around the circumference of the arc-shaped buffer strip 41. Two return water inlets 42 are symmetrically arranged vertically on the cover plate 4 located within the arc-shaped buffer strip 41. Two baffles 43 are slidably arranged on the cover plate 4, and the two baffles 43 respectively cover the two return water inlets 42. A vertically elongated hole 431 is provided on each side of the baffle 43, and a bolt passes through the vertically elongated hole 431. The bolts are threadedly connected to the cover plate 4. Loosening the bolts allows the baffle plate 43 to move up and down along the vertical hole 431, thereby adjusting the size of the return water inlet 42. Tightening the bolts fixes the baffle plate 43 onto the cover plate 4. A U-shaped water seal groove 44 communicating with the return water inlet 42 is provided on the outer wall of the cover plate 4. Two inclined baffles 45 protrude from the outer wall of the cover plate 4, which are respectively positioned above the two U-shaped water seal grooves 44 to prevent debris from falling into the U-shaped water seal grooves 44. The cover plate 4 is fitted onto the housing 1 and fits against the first sealing ring 11 to form a sealing structure. The cover plate 4 and the housing 1 are locked together by a snap lock 5. When the cover plate 4 is fitted onto the housing 1, the arc-shaped buffer strip 41 is positioned on the outside of the guide wheel 2 and does not interfere with the inlet and outlet cable grooves.

[0020] In use, the housing 1 is fixed on the wire drawing machine and positioned above the water collection tank. The cover plate 4 is placed on the housing 1 and kept sealed. Cooling water is continuously injected into the cavity 12 of the housing 1 through the water inlet 14. The cooling water flows into the cooling tank 13 from the four water outlets 15. Then, the cooling water in the cooling tank 13 enters the U-shaped water seal groove 44 through the two water return ports 42. The cooling water forms a water seal in the U-shaped water seal groove 44, isolating the cooling tank 13 from the outside air. Because the water injection volume of the water inlet 14 is large and the total water output of the four water outlets 15 is greater than the water return volume of the two water return ports 42, the cooling water in the cooling tank 13 can still fill the cooling tank 13 even with the water outlets 15 present. Cooling water is continuously injected, so the cooling water in the cooling tank 13 overflows from the U-shaped water seal groove 44 into the water collection tank. Since the cooling water discharged from the water inlet 14 will produce large fluctuations when entering the cavity 12, and the highly fluctuating cooling water will affect the cooling effect of the wire, the cooling water with large fluctuations is introduced into the larger volume cooling tank 13 through the four water outlets 15, so that the cooling water is buffered and tends to be stable. Cooling water is introduced into the wire box 3 of both the wire inlet groove and the wire outlet groove. The temperature of the cooling water in the wire box 3 of the wire inlet groove is higher than the temperature of the cooling water in the cooling tank 13, and the temperature of the cooling water in the wire box 3 of the wire outlet groove is lower than the temperature of the cooling water in the cooling tank 13. After high-temperature annealing, the wire first enters the wire box 3 of the wire inlet slot through the wire through hole 19 connected to the wire inlet slot, where it comes into contact with the higher-temperature cooling water for pre-cooling, initially reducing the wire temperature. Then, it enters the cooling tank 13 through the wire inlet ceramic eye 16 and is wound around the guide wheel 2, where it comes into contact with the cooling water for conventional cooling, further reducing the wire temperature. Because the wire is pre-cooled in the wire box 3 of the wire inlet slot, the temperature difference between the wire and the cooling water in the cooling tank 13 is reduced, preventing phase change stress concentration when the wire comes into contact with the cooling water in the cooling tank 13. The wire is wound around the guide wheel 2. When the guide wheel 2 rotates, it will agitate the coolant in the cooling tank 13, causing the coolant to form a vortex. The vortex formed by the coolant will impact the buffer groove 411 of the arc-shaped buffer belt 41 under inertia. The buffer groove 411 on the arc-shaped buffer belt 41 will break the vortex in the coolant, ensuring the flow stability of the coolant in the cooling tank 13, thereby ensuring that the wire is cooled evenly. Then, it enters the wire box 3 of the wire outlet slot through the wire outlet ceramic eye 17 and comes into contact with the lowest temperature cooling water for final cooling, so that the temperature of the wire is reduced to room temperature. Finally, it extends out from the wire passage hole 19 connected to the wire outlet slot.

[0021] When cooling thicker wires, the temperature of the cooling water in cooling tank 13 rises relatively quickly. This necessitates increasing the water displacement rate in cooling tank 13 to prevent the cooling water temperature from becoming too high. This is achieved by increasing the water inlet 14 and enlarging the return outlet 42. When cooling thinner wires, the temperature of the cooling water in cooling tank 13 rises more slowly. This necessitates reducing the water displacement rate in cooling tank 13 to minimize cooling water consumption while preventing the cooling water temperature from becoming too high. This is achieved by reducing the water inlet 14 and decreasing the return outlet 42.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A rapid cooling device in a wire drawing annealing furnace, characterized in that: include: The housing has a first sealing ring groove on its inner wall, in which a first sealing ring is fitted. The housing contains a cavity and a cooling tank, the latter having a larger volume than the cavity. The housing has an inlet hole communicating with the cavity. Several outlet holes communicating with the cooling tank are located on the partition between the cavity and the cooling tank. A guide wheel is rotatably mounted in the cooling tank. An inlet and outlet cable groove communicating with the cooling tank are located on the right side of the housing. Two outlet cable grooves, one for the inlet cable and the other for the outlet cable, are located on the right side wall of the housing. The cable passage hole is connected to the cable inlet and outlet channels. A cover plate is hinged to the left side wall of the box. An arc-shaped buffer strip is protruding on the inner side wall of the cover plate. Several buffer grooves are evenly distributed around the circumference of the arc-shaped buffer strip. A return water port is provided on the cover plate located inside the arc-shaped buffer strip. A U-shaped water seal groove connected to the return water port is provided on the outer side wall of the cover plate. The cover plate is closed on the box and fits against the first sealing ring. The cover plate and the box are locked together by a snap lock. When the cover plate is closed on the box, the arc-shaped buffer strip is blocked on the outside of the guide wheel and does not interfere with the cable inlet and outlet channels.

2. The rapid cooling device in the wire drawing annealing furnace according to claim 1, characterized in that: Two return water inlets are symmetrically arranged on the top and bottom of the cover plate. Two U-shaped water seal grooves are provided on the outer wall of the cover plate, and the two U-shaped water seal grooves are connected to the two return water inlets respectively. Four water outlets are provided on the tank body, and the four water outlets are distributed in a circle with the axis of the guide wheel as the center.

3. The rapid cooling device in the wire drawing annealing furnace according to claim 1 or 2, characterized in that: A baffle is slidably installed on the cover plate, covering the return water inlet. A vertical hole is provided on each side of the baffle, and a bolt is inserted through the vertical hole, which is threadedly connected to the cover plate.

4. The rapid cooling device in the wire drawing annealing furnace according to claim 1 or 2, characterized in that: An inclined baffle is protruding from the outer wall of the cover plate located above the U-shaped water seal trough.

5. The rapid cooling device in the wire drawing annealing furnace according to claim 1, characterized in that: A drain hole connected to the cooling tank is provided at the bottom of the box, and a drain valve is provided on the drain hole.

6. The rapid cooling device in the wire drawing annealing furnace according to claim 1, characterized in that: The inlet slot is located below the outlet slot. An inlet ceramic eye is provided on the partition between the inlet slot and the cooling tank, and an outlet ceramic eye is provided on the partition between the outlet slot and the cooling tank.

7. The rapid cooling device in the wire drawing annealing furnace according to claim 6, characterized in that: Both the inlet and outlet cable trays are equipped with wire boxes. The connection structure between the wire boxes and the inlet and outlet cable trays is the same. The connection structure between the inlet cable tray and the wire box is as follows: a second liquid inlet hole connected to the inlet cable tray is provided on the housing. The wire box is fixedly installed in the inlet cable tray. A first liquid inlet hole and a second sealing ring are provided on one side wall of the wire box. The side wall of the wire box with the second sealing ring is attached to the tray wall of the inlet cable tray and then connected by bolts. The first liquid inlet hole and the second liquid inlet hole are connected. Mounting holes penetrating the left and right end walls are provided in the wire box. It is connected to the first liquid inlet hole. A fixed guide tube and a left retaining spring are installed at the left end of the mounting hole. A conical positioning hole is provided at the right end of the fixed guide tube. A movable guide tube and a right retaining spring are installed at the right end of the mounting hole. A conical positioning head is provided at the left end of the movable guide tube. Several guide grooves are evenly distributed around the circumference of the conical positioning head. A butterfly spring is provided between the movable guide tube and the right retaining spring. Under the elastic force of the butterfly spring, the movable guide tube abuts against the fixed guide tube. The conical positioning head on the movable guide tube abuts against the conical positioning hole on the fixed guide tube. The fixed guide tube abuts against the left retaining spring.

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