A spray quenching device

Abstract

This utility model relates to the field of heat treatment technology, and in particular to a spray quenching device, including a frame, a spray system, and a workbench. The frame includes a base, two telescopic rods, and a top plate on the two telescopic rods. The workbench is equipped with an adjusting component and a motor-driven placement platform; a clamping mechanism is also included. This utility model, through the clamping mechanism, can clamp and fix the workpiece to be quenched on the workbench, while allowing the quenching medium to penetrate the clamping mechanism from below and the side, directly spraying it onto the obstructed surface of the workpiece, avoiding the clamping mechanism from blocking the path of the quenching medium and causing insufficient local cooling. Furthermore, the centrifugal fan can draw in a large amount of high-pressure steam generated by the spray quenching under negative pressure, guiding the steam through the upper support mechanism and then discharging it through an external pipe, preventing high-pressure steam from permeating the working area and also preventing permeated steam from hindering the quenching medium from reaching the workpiece surface.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, and in particular to a spray quenching device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Spray quenching equipment is an industrial device that uses a gas-liquid two-phase fluid (mist medium) to rapidly cool (quench) high-temperature workpieces. By precisely controlling the cooling parameters, it achieves adjustable cooling capacity between single water cooling and air cooling, and is one of the key technologies in modern heat treatment processes.

[0004] Currently, because the workpiece is vertically clamped on the workbench, the structure at the bottom of the workpiece surrounded by the clamping plate cannot be cooled by spray, resulting in insufficient local cooling. This causes the hardness of the area to be low (soft spot), and there is a risk of deformation or cracking due to uneven cooling. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a spray quenching device.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a spray quenching device, including a frame, a spray system and a workbench, wherein the spray system is mounted on the frame, the frame includes a base platform and two telescopic rods symmetrically mounted on the base platform, a top plate is mounted on the two telescopic rods, an adjusting component fixed on the base platform is mounted on the workbench, and a motor-driven placement platform is also mounted on the workbench, the placement platform is rotatably mounted on the workbench, and an installation groove is provided on the top surface of the placement platform; A clamping mechanism is disposed on the placement platform for limiting the lower end of the workpiece to be quenched. The clamping mechanism includes a first clamping plate located on one side of the mounting groove and a second clamping plate that is opposite to the first clamping plate and horizontally close to the first clamping plate in the mounting groove. The end faces of the first clamping plate and the second clamping plate close to the workpiece to be quenched are provided with a hollow structure. The hollow structure is used for the quenching medium to be sprayed directly onto the outer surface of the workpiece to be quenched through the first clamping plate and the second clamping plate.

[0007] Furthermore, a screw rod is horizontally rotatably mounted on the placement platform, through which the first clamping plate and the second clamping plate pass in sequence. One end of the screw rod extends to the outside of the placement platform and is provided with a handle. The screw rod is provided with two threaded sections with opposite thread directions. By operating the handle and rotating the screw, the first clamping plate and the second clamping plate, which are respectively engaged with the two threaded sections on the screw, move in opposite directions or away in a straight line under the limiting position in the mounting groove, thereby limiting and fixing the lower end of the workpiece to be quenched.

[0008] Furthermore, the top plate is provided with an upper support mechanism, which includes a top cover fixedly mounted on the top plate and a support cover located on the lower side of the top cover and connected by an electric push rod. A centrifugal fan is provided inside the support cover, and a flow guide is connected to and rotatably mounted on the lower side of the centrifugal fan. Two upper limit positions for clamping the upper end of the workpiece to be quenched are symmetrically arranged at the bottom opening of the flow guide. During spray quenching, the centrifugal fan is started, and the resulting negative pressure airflow rapidly draws in steam and is captured by the guide shroud.

[0009] Furthermore, the upper limit member is composed of two plate-shaped members that intersect at an acute angle. A rotating shaft is provided on the axis at the intersection of the two plate-shaped members, and connecting blocks are rotatably provided at both ends of the rotating shaft at the bottom of the flow guide. When the flow guide moves toward and approaches the top of the workpiece to be quenched, the workpiece will first come into contact with the plate-shaped piece located on the upper side. Under the action of vertical force, the plate-shaped piece located on the lower side will rotate toward the center by rotating the shaft connected to the connecting block, so as to clamp and fix the top of the workpiece to be quenched.

[0010] Furthermore, the plate-shaped component also adopts a hollow structure, allowing the quenching medium to be directly sprayed onto the upper surface of the workpiece to be quenched through the hollow structure.

[0011] Furthermore, a vertically penetrating conduit that connects to the external pipe is provided on one side of the top surface of the centrifugal fan, and the outside of the conduit is slidably disposed relative to the top cover.

[0012] Furthermore, the adjusting component includes a base plate fixed on the base platform, a hydraulic cylinder located at one end of the base plate and telescopically connected to the workbench, and a support sleeve vertically arranged at the other end of the base plate for assisting in supporting the vertical lifting and lowering of the workbench.

[0013] The beneficial effects of this utility model are reflected in: This invention, through the setting of a clamping mechanism, can clamp and fix the workpiece to be quenched on the workbench, and allow the quenching medium to penetrate the clamping mechanism from below and the side, directly spraying onto the surface of the workpiece that is blocked, thus avoiding the clamping mechanism from blocking the path of the quenching medium and causing insufficient local cooling. In addition, the centrifugal fan can draw in a large amount of high-pressure steam generated by spray quenching under negative pressure, and guide the steam through the upper support mechanism to be concentrated and discharged through the external pipe, thus avoiding the high-pressure steam from spreading in the working area and causing harm to the workers, and also avoiding the spread of steam from hindering the quenching medium from reaching the surface of the workpiece smoothly. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model. Figure 2 This is a perspective view of the workbench in one embodiment of the present invention. Figure 3 This is a perspective view of the upper support mechanism in one embodiment of the present invention. Figure 4 This is a three-dimensional structural view of the upper support mechanism in one embodiment of the present invention.

[0015] In the picture: 1. Spraying system; 2. Workbench; 3. Base platform; 4. Telescopic rod; 5. Top plate; 6. Adjusting component; 61. Base plate; 62. Hydraulic cylinder; 63. Support sleeve; 7. Placement platform; 8. Clamping mechanism; 81. First clamping plate; 82. Second clamping plate; 83. Screw; 9. Upper support mechanism; 91. Top cover; 92. Support cover; 93. Centrifugal fan; 94. Flow guide; 95. Upper limit component; 96. Conduit. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figure 1-4This utility model discloses a spray quenching device, including a frame, a spray system 1 and a workbench 2. The spray system 1 is mounted on the frame. The frame includes a base 3 and two telescopic rods 4 symmetrically arranged on the base 3. A top plate 5 is provided on the two telescopic rods 4. An adjusting component 6 is fixed on the base 3 on the workbench 2. A motor-driven placement platform 7 is also provided on the workbench 2. The placement platform 7 is rotatably mounted on the workbench 2. An installation groove is provided on the top surface of the placement platform 7. A clamping mechanism 8 is disposed on the placement platform 7 and is used to limit the lower end of the workpiece to be quenched. The clamping mechanism 8 includes a first clamping plate 81 located on one side of the mounting groove and a second clamping plate 82 located opposite the first clamping plate 81 and horizontally approaching the first clamping plate 81 in the mounting groove. The end faces of the first clamping plate 81 and the second clamping plate 82 near the workpiece to be quenched are provided with a hollow structure. The hollow structure is used for the quenching medium to be directly sprayed onto the outer surface of the workpiece to be quenched through the first clamping plate 81 and the second clamping plate 82.

[0018] In specific implementation, a frame consisting of two symmetrical telescopic rods 4 is used between the base platform 3 and the top plate 5, and a spray system 1 is installed on the frame. When the workpiece to be quenched is placed on the placement platform 7 driven by a motor, the first clamping plate 81 and the second clamping plate 82 are operated to fix and clamp the workpiece to be quenched. The first clamping plate 81 and the second clamping plate 82 with a hollow structure allow the quenching medium to penetrate from below and the side and spray directly onto the surface of the workpiece that is blocked during the spray quenching operation using the spray system 1, which effectively avoids the quenching medium path being blocked due to the fixing effect.

[0019] It should be noted that the spray system 1 includes, but is not limited to, a high-pressure air source for introducing air, a pipeline for conveying quenching medium, and an array of nozzles surrounding the workpiece.

[0020] In one embodiment, a screw 83 is horizontally rotatably mounted on the placement platform 7, through which the first clamping plate 81 and the second clamping plate 82 pass in sequence. One end of the screw 83 extends to the outside of the placement platform 7 and is provided with a handle. The screw 83 is provided with two threaded sections with opposite thread directions. By operating the handle and rotating the screw 83, the first clamping plate 81 and the second clamping plate 82, which are respectively engaged with the two threaded sections of the screw 83, move in opposite directions or away in a linear motion within the mounting groove, thus fixing the lower end of the workpiece to be quenched. This design, with the screw 83 horizontally slotted and rotatably mounted on the placement table 7, and the two threaded sections machined on the screw 83 respectively engaged with the first clamping plate 81 and the second clamping plate 82, when the handle welded to one end of the screw 83 is rotated, the first clamping plate 81 and the second clamping plate 82, which are threadedly engaged with the screw 83, move in opposite directions in a linear motion within the mounting groove machined on the placement table 7, thus fixing the workpiece to be quenched on the placement table 7, achieving the fixation of the workpiece on this device.

[0021] In one embodiment, an upper support mechanism 9 is provided on the top plate 5. The upper support mechanism 9 includes a top cover 91 fixedly disposed on the top plate 5 and a support cover 92 located below the top cover 91 and connected by an electric push rod. A centrifugal fan 93 is disposed inside the support cover 92. A flow guide 94 is rotatably disposed below the centrifugal fan 93. Two upper limit members 95 for clamping the upper end of the workpiece to be quenched are symmetrically disposed at the bottom opening of the flow guide 94. During spray quenching, the centrifugal fan 93 is activated, and the generated negative pressure airflow rapidly draws in steam, which is then captured by the guide shroud 94. This design, via the top cover 91 mounted on the top plate 5 and the electric actuator mounted on the top cover 91, moves the support cover 92, bolted at the bottom of the electric actuator, relative to the top cover 91 until the guide shroud 94 mounted below the support cover 92 surrounds the top of the workpiece to be quenched. Two upper limiters 95, installed at the bottom opening of the guide shroud 94, further stabilize the top of the workpiece, ensuring its fixation within the device and preventing it from loosening during vertical movement and horizontal rotation.

[0022] It should be noted that the centrifugal fan 93 installed inside the support cover 92 can be activated to quickly draw in and concentrate the steam trajectory when a large amount of high-pressure steam is generated.

[0023] To further explain, the centrifugal fan 93 needs to be made of corrosion-resistant material, such as fiberglass or stainless steel, to avoid corrosion from wet steam.

[0024] In one embodiment, the upper limit member 95 is composed of two plate-shaped members that intersect at an acute angle. A rotating shaft is provided on the axis of the intersection of the two plate-shaped members, and connecting blocks are rotatably provided at both ends of the rotating shaft at the bottom of the flow guide 94. When the flow guide shroud 94 moves towards the top of the workpiece to be quenched, the workpiece will first contact the upper plate-shaped component. Under the vertical force, the lower plate-shaped component will rotate towards the center via the rotating shaft connected to the connecting block, thus clamping and fixing the top of the workpiece. This design, using connecting blocks welded symmetrically at the bottom of the telescopic rod 4 and rotating shafts that rotate relative to each other within the connecting blocks, ensures that when the electric actuator pushes the flow guide shroud 94 towards the top of the workpiece, the top of the workpiece will first contact the upper plate-shaped component. At this time, the lower plate-shaped component, with its acute angle, will move towards the outer end of the workpiece under the rotation of the rotating shaft, ensuring that the top of the workpiece is clamped and fixed by the upper limiters 95 installed on both sides of the bottom of the flow guide shroud 94.

[0025] In one embodiment, the plate-shaped component also employs a perforated structure, allowing the quenching medium to be directly sprayed onto the upper surface of the workpiece to be quenched through the perforated structure. This design, using a perforated plate-shaped component, also prevents the fixed position at the upper end of the workpiece from being obstructed, thus ensuring uniform quenching and cooling.

[0026] In one embodiment, a vertically extending conduit 96 is provided on one side of the top surface of the centrifugal fan 93, penetrating the top cover 91 and connected to an external pipe. The outside of the conduit 96 is slidably disposed relative to the top cover 91. This design, by having a slotted conduit 96 on one side of the centrifugal fan 93, and with the conduit 96 movable at its connection point on the top cover 91, allows the high-pressure steam drawn in by the negative pressure inside the centrifugal fan 93 to be sequentially transported to the outside via the conduit 96 and the external pipe connected to the conduit 96, where it undergoes steam treatment before being discharged into the atmosphere.

[0027] It should be noted that the catheter 96 has telescopic characteristics and can change with the extension or shortening of the electric actuator.

[0028] In one embodiment, the adjusting component 6 includes a base plate 61 fixed on the base platform 3, a hydraulic cylinder 62 disposed at one end of the base plate 61 and telescopically connected to the workbench 2, and a support sleeve 63 vertically disposed at the other end of the base plate 61 for assisting in the vertical lifting and lowering of the workbench 2. This design allows for free adjustment of the horizontal height of the workbench 2 by using the base plate 61 welded to the base platform 3, and the hydraulic cylinder 62 and support sleeve 63 fixed at both ends of the base plate 61 with bolts. During spray quenching, the hydraulic cylinder 62 vertically reciprocates, gradually moving the workpiece to be quenched, fixed by the placement platform 7 and the clamping mechanism 8, upwards or downwards on the workbench 2. Simultaneously, driven by a motor, the workpiece to be quenched mounted on the placement platform 7 rotates, ensuring uniform contact with the atomized quenching medium and guaranteeing a uniform cooling effect.

[0029] It should be noted that the lifting and lowering of the hydraulic cylinder 62 requires the coordinated movement of the telescopic rod 4, while the rotation of the placement platform 7 requires the rotation of the guide shroud 94 relative to the centrifugal fan 93, which ensures that the lifting and rotation of the workpiece to be quenched are not affected by interference.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Additionally, "multiple" refers to two or more.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spray quenching device, comprising a frame, a spray system (1), and a workbench (2), wherein the spray system (1) is mounted on the frame, characterized in that: The frame includes a base (3) and two telescopic rods (4) symmetrically arranged on the base (3). A top plate (5) is provided on the two telescopic rods (4). An adjusting component (6) fixed on the base (3) is provided on the workbench (2). A motor-driven placement platform (7) is also provided on the workbench (2). The placement platform (7) is rotatably arranged on the workbench (2). An installation groove is provided on the top surface of the placement platform (7). A clamping mechanism (8) is provided on the placement platform (7) for limiting the lower end of the workpiece to be quenched. The clamping mechanism (8) includes a first clamping plate (81) located on one side of the mounting groove and a second clamping plate (82) relative to the first clamping plate (81) and horizontally close to the first clamping plate (81) in the mounting groove. The end faces of the first clamping plate (81) and the second clamping plate (82) close to the workpiece to be quenched are provided with a hollow structure. The hollow structure is used for the quenching medium to be directly sprayed onto the outer surface of the workpiece to be quenched through the first clamping plate (81) and the second clamping plate (82).

2. The spray quenching device according to claim 1, characterized in that: The placement platform (7) is horizontally rotatably provided with a screw (83) that passes through the first clamping plate (81) and the second clamping plate (82) in sequence. One end of the screw (83) extends to the outside of the placement platform (7) and is provided with a handle. The screw (83) is provided with two threaded sections with opposite thread directions. Operate the handle and rotate the screw (83), which will cause the first clamping plate (81) and the second clamping plate (82) that are respectively engaged with the two threaded sections on the screw (83) to move in opposite directions or away from each other in the mounting groove under the limiting position, thereby limiting and fixing the lower end of the workpiece to be quenched.

3. The spray quenching device according to claim 1, characterized in that: The top plate (5) is provided with an upper support mechanism (9). The upper support mechanism (9) includes a top cover (91) fixedly installed on the top plate (5) and a support cover (92) located on the lower side of the top cover (91) and connected by an electric push rod. A centrifugal fan (93) is provided inside the support cover (92). A flow guide (94) is connected to and rotatably installed on the lower side of the centrifugal fan (93). Two upper limit positions (95) for clamping the upper end of the workpiece to be quenched are symmetrically arranged at the bottom opening of the flow guide (94). During spray quenching, the centrifugal fan (93) is started, and the generated negative pressure airflow rapidly draws in steam and is captured by the guide shroud (94).

4. The spray quenching device according to claim 3, characterized in that: The upper limit member (95) is composed of two plate-shaped members that intersect at an acute angle. A rotating shaft is provided on the axis of the intersection of the two plate-shaped members. Connecting blocks are rotatably provided at both ends of the rotating shaft at the bottom of the flow guide (94). When the flow guide (94) moves toward and approaches the top of the workpiece to be quenched, the workpiece to be quenched will first come into contact with the plate-shaped piece located on the upper side. Under the vertical force, the plate-shaped piece located on the lower side will rotate toward the center by rotating the shaft connected to the connecting block, so as to clamp and fix the top of the workpiece to be quenched.

5. The spray quenching device according to claim 4, characterized in that: The plate-shaped component also adopts a hollow structure, which allows the quenching medium to be directly sprayed onto the upper surface of the workpiece to be quenched through the hollow structure.

6. The spray quenching device according to claim 3, characterized in that: The centrifugal fan (93) has a vertically penetrating conduit (96) that runs through the top cover (91) and connects to the external pipe. The outside of the conduit (96) is slidably disposed relative to the top cover (91).

7. The spray quenching device according to claim 1, characterized in that: The adjusting component (6) includes a base plate (61) fixed on the base platform (3), a hydraulic cylinder (62) located at one end of the base plate (61) and telescopically connected to the workbench (2), and a support sleeve (63) vertically provided at the other end of the base plate (61) for assisting in supporting the vertical lifting of the workbench (2).

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