Temperature-adjustable quenching cooling device

Abstract

The utility model relates to quenching technical field especially relates to a temperature -adjustable quenching cooling device. Temperature -adjustable quenching cooling device includes the mounting seat, and the mounting seat is fixedly installed with the box, and the quenching cavity of oval type structure is established in the box inside, and the working mouth that communicates with the quenching cavity is established to the box upper end, the quenching cavity bottom is installed with two temperature -controlled coil pipes, and every temperature -controlled coil pipe is all the serpentine bending structure, and the both ends of two temperature -controlled coil pipes are all vertically through the box bottom wall and extend to the box outside laterally. Two temperature -controlled coil pipes in the utility model can maintain the cooling medium in the quenching cavity at the temperature required by the process, and the crossflow branch pipe inhales and outputs the cooling medium, cooperates the oval quenching cavity to form the backflow, avoids the medium local retention to promote the temperature uniformity, and the vertical flow branch pipe guides the medium to the cavity center, enhances the medium flow velocity of workpiece periphery, improves the cooling efficiency, and reduces the quality problem that the workpiece produces because of the cooling speed difference.

Description

Technical Field

[0001] This utility model relates to the field of quenching technology, and in particular to an adjustable temperature quenching and cooling device. Background Technology

[0002] In the field of mechanical manufacturing, quenching is a key heat treatment process to improve the hardness, strength and other mechanical properties of metal workpieces. Its core principle is to heat the metal workpiece to above the critical temperature and hold it at that temperature for a period of time, then quickly place it in a cooling medium for rapid cooling, thereby achieving performance enhancement through phase transformation. As the core equipment for process execution, the quenching cooling device's cooling efficiency, temperature control accuracy and cooling uniformity directly determine the quality stability of the workpiece after quenching.

[0003] Traditional quenching and cooling devices often use mechanical stirring to agitate and turbulent the cooling medium while controlling its temperature, in order to maintain the uniformity of the cooling medium's temperature. However, in actual use, the agitation and turbulence are indiscriminate and cannot be focused on the core area of ​​the workpiece. In fact, local eddies may even cause uneven flow velocity on the workpiece surface, resulting in some areas cooling too quickly and cracking, while other areas cooling too slowly, affecting the hardness and thus the processing quality of the workpiece.

[0004] Therefore, it is necessary to provide a new adjustable temperature quenching and cooling device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a new adjustable temperature quenching and cooling device.

[0006] The adjustable temperature quenching and cooling device provided by this utility model includes: a mounting base, on which a box is fixedly mounted, the box having an elliptical quenching cavity inside, and a working port communicating with the quenching cavity at the upper end of the box.

[0007] Two temperature control coils are installed at the bottom of the quenching chamber, and each temperature control coil has a serpentine bending structure. Both ends of the two temperature control coils vertically penetrate the bottom wall of the chamber and extend laterally to the outside of the chamber. Connectors are fixedly installed at both ends of the two temperature control coils.

[0008] Two pump bodies are fixedly installed on the mounting base, located on both sides of the housing. The input and output ends of the two pump bodies are fixedly connected to a suction pipe and a delivery pipe. Two rows of horizontally distributed branch pipes are fixedly installed on the inner walls of both sides of the quenching chamber. The two rows of horizontally distributed branch pipes on one side are connected to the suction pipe and delivery pipe on the pump body on the same side, respectively. The two rows of horizontally distributed branch pipes on the other side are connected to the delivery pipe and suction pipe on the pump body on the same side, respectively. Two rows of vertically distributed branch pipes are fixedly connected to the two delivery pipes. The ends of the two vertically distributed branch pipes away from the delivery pipes are close to the center of the quenching chamber and are vertically upward.

[0009] Preferably, a drain pipe communicating with the bottom of the quenching chamber is fixedly installed at the bottom of the box, and an electrically controlled valve for controlling the opening and closing of the drain pipe is installed on the drain pipe.

[0010] Preferably, the bottom of the mounting base is fixedly equipped with a support foot for raising the device, and the temperature control coil and drain pipe located at the bottom of the box are suspended away from the ground by the support foot.

[0011] Preferably, two symmetrically distributed thermometers are also fixedly installed on the chamber, and the detection end of the thermometer penetrates through the side wall of the chamber and extends into the quenching chamber.

[0012] Preferably, multiple arc-shaped support plates are fixedly installed at the bottom of the quenching chamber. The multiple arc-shaped support plates are distributed at intervals along the serpentine trajectory of the temperature control coil, and the arc-shaped concave surface of the arc-shaped support plate is in contact with the outer wall of the temperature control coil. Both temperature control coils are placed on the arc-shaped support plates and suspended at the bottom of the quenching chamber by the arc-shaped support plates.

[0013] Preferably, both the cross-flow branch pipe and the vertical flow branch pipe are threaded with filter screens at their ports.

[0014] Preferably, both the water suction pipe and the water delivery pipe are wrapped with insulating cotton.

[0015] Preferably, a protective frame extending into the quenching chamber is installed at the working opening, and a U-shaped support plate fixedly connected to the protective frame is attached to the upper end face of the box body. Z-shaped handles are symmetrically fixedly installed on both sides of the U-shaped support plate.

[0016] Compared with related technologies, the adjustable temperature quenching and cooling device provided by this utility model has the following beneficial effects:

[0017] This invention uses two temperature-controlled coils to maintain the cooling medium in the quenching chamber within the temperature range required for the quenching process. The cross-flow branch pipe draws in or outputs the cooling medium in the quenching chamber, allowing the upper and lower water flows to cooperate with the elliptical quenching chamber to form a backflow, preventing the cooling medium from stagnating in the chamber and improving the overall temperature uniformity. The cooling medium output by the vertical flow branch pipe is directly guided to the central area of ​​the quenching chamber, specifically enhancing the flow rate of the cooling medium around the workpiece, improving the workpiece cooling efficiency, and reducing quality problems caused by differences in cooling rates in different parts of the workpiece. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the adjustable temperature quenching and cooling device provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the distribution of internal components of the box.

[0020] Figure 3 for Figure 1 The diagram shows the structure of the box.

[0021] Figure 4 for Figure 2 The diagram shown illustrates the structure of the temperature control coil.

[0022] Figure 5 for Figure 2 The diagram shows the structure of the pump body;

[0023] Figure 6 for Figure 1 The diagram shows the structure of the protective frame.

[0024] The following are the labels in the diagram: 1. Mounting base; 11. Foot pad; 2. Housing; 21. Quenching chamber; 22. Working port; 23. Drain pipe; 24. Electrically controlled valve; 25. Thermometer; 26. Arc-shaped support plate; 3. Temperature control coil; 31. Connector; 4. Pump body; 41. Suction pipe; 42. Water delivery pipe; 43. Horizontal flow branch pipe; 44. Vertical flow branch pipe; 45. Filter screen; 5. Protective frame; 51. U-shaped support plate; 52. Z-shaped handle. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 5 This utility model provides an adjustable temperature quenching and cooling device, which includes: a mounting base 1, on which a housing 2 is fixedly mounted. The housing 2 has an elliptical quenching cavity 21 inside, and a working port 22 communicating with the quenching cavity 21 is opened at the upper end of the housing 2. Two temperature control coils 3 are installed at the bottom of the quenching cavity 21, each with a serpentine curved structure. Both ends of the two temperature control coils 3 vertically penetrate the bottom wall of the housing 2 and extend laterally to the outside of the housing 2. Connectors 31 are fixedly installed at both ends of the two temperature control coils 3. Two connectors located on opposite sides of the housing 2 are also fixedly mounted on the mounting base 1. Pump body 4, and the input and output ends of two pump bodies 4 are fixedly connected to water suction pipe 41 and water delivery pipe 42. Two rows of horizontal flow branch pipes 43 are fixedly installed on the inner walls of both sides of the quenching chamber 21. The two rows of horizontal flow branch pipes 43 on one side are connected to the water suction pipe 41 and water delivery pipe 42 on the same side of the pump body 4, respectively. The two rows of horizontal flow branch pipes 43 on the other side are connected to the water delivery pipe 42 and water suction pipe 41 on the same side of the pump body 4, respectively. Two rows of vertical flow branch pipes 44 are fixedly connected to the two water delivery pipes 42. The end of the two rows of vertical flow branch pipes 44 away from the water delivery pipe 42 is close to the center of the quenching chamber 21 and is vertically upward.

[0028] It should be noted that: the mounting base 1 in this utility model is used for the installation support of the housing 2. The quenching chamber 21 inside the housing 2 is the core space for workpiece quenching and cooling. The working port 22 at its upper end is used for the insertion and removal of workpieces, providing a convenient channel for quenching operations. The two serpentine temperature control coils 3 are connected to the temperature control medium supply device through the connectors 31 at their ends (the two temperature control coils 3 are respectively connected to the low-temperature coolant storage tank and the high-temperature heat transfer fluid device to ensure that the cooling medium will not change significantly due to the influence of the external environment). The quenching process requires... When the temperature of the cooling medium is higher than the required temperature, the temperature control coil 3, connected to the low-temperature coolant storage tank, exchanges heat with the cooling medium to lower the temperature of the cooling medium inside the quenching chamber 21 to the range required for the quenching process. When the temperature of the cooling medium is lower than the required temperature, the temperature control coil 3, connected to the high-temperature heat transfer fluid device, exchanges heat with the cooling medium to raise the temperature of the cooling medium inside the quenching chamber 21 to the range required for the quenching process. The serpentine bending design increases the contact area between the temperature control coil 3 and the cooling medium inside the quenching chamber 21. The temperature-controlled medium inside the tube conducts the temperature to the cooling medium in the quenching chamber 21 through the pipe wall. After the pumps 4 on both sides of the mounting base 1 are started, they serve as the power source for water circulation. The pumps draw the cooling medium from the quenching chamber 21 through the suction pipe 41 at the input end, and then transport the cooling medium back to the quenching chamber 21 through the water delivery pipe 42 at the output end, forming a closed loop circulation. The two rows of cross-flow branch pipes 43 on the inner walls of both sides of the quenching chamber 21 are connected to the suction pipe 41 and the water delivery pipe 42 of the pump 4 on the same side, respectively. The connection method of one side of the cross-flow branch pipe 43 to the suction pipe 41 and the water delivery pipe 42 is as follows: Conversely, the upper and lower water flows work together with the inner cavity of the elliptical quenching chamber 21 to form a backflow, preventing the cooling medium from stagnating locally in the cavity and improving the overall temperature uniformity. The two rows of vertical branch pipes 44 connected to the water supply pipe have their ports close to the center of the quenching chamber 21 and are vertically upward. This allows the cooling medium delivered by the water supply pipe 42 to be directly guided to the central area of ​​the quenching chamber 21 (i.e., the workpiece placement position), which specifically enhances the flow rate of the cooling medium around the workpiece, improves the workpiece cooling efficiency, and reduces quality problems caused by differences in cooling rates in different parts of the workpiece.

[0029] The bottom of the housing 2 is fixedly equipped with a drain pipe 23 that communicates with the bottom of the quenching chamber 21, and the drain pipe 23 is equipped with an electric control valve 24 for controlling the opening and closing of the drain pipe 23. During the quenching process, workpiece debris, oxide scale and other impurities may be generated in the quenching chamber 21, and the performance of the cooling medium may decline after long-term use and needs to be replaced. At this time, the electric control valve 24 is opened, and the drain pipe 23 can quickly discharge the impurities and waste cooling medium at the bottom of the chamber, so as to avoid the accumulation of impurities affecting the heat transfer efficiency of the temperature control coil 3 or the circulation effect of the cooling medium, and at the same time provide a clean chamber environment for replacing the new cooling medium.

[0030] Furthermore, the bottom of the mounting base 1 is fixedly equipped with support feet 11 for raising the device. The temperature control coil 3 and the drain pipe 23 located at the bottom of the housing 2 are suspended from the ground by the support feet 11. The support feet 11 are fixedly installed at the bottom of the mounting base 1, and the entire mounting base 1 and the housing 2 above it are raised by their own support height, so that the temperature control coil 3 and the drain pipe 23 at the bottom of the housing 2 are both off the ground and suspended, avoiding direct contact between these two components and the ground. The suspended design also provides operating space for the maintenance of the components at the bottom of the housing 2, making it convenient for operators to inspect and maintain components such as the connector 31 of the temperature control coil and the electric control valve 24 of the drain pipe 23 from below the equipment without the need for additional equipment elevation, thus improving the convenience of maintenance.

[0031] Two symmetrically distributed thermometers 25 are fixedly installed on the chamber 2, and the detection end of the thermometers 25 penetrates through the side wall of the chamber 2 and extends into the quenching chamber 21. The thermometers 25 can capture the actual temperature of the cooling medium in the quenching chamber 21 in real time, providing the operator with intuitive temperature data, making it easy to grasp the temperature changes of the quenching environment in a timely manner, and avoiding deviation from the process requirements due to excessively high or low temperatures. When the temperature in the quenching chamber 21 is detected to be higher or lower than the process requirements, the operator can adjust the temperature or flow rate of the medium connected to the temperature control coil 3 to control the temperature of the cooling medium inside the quenching chamber 21, so that the cooling medium is kept within the quenching temperature range suitable for the workpiece, and ensure the quenching quality of the workpiece.

[0032] It is worth noting that multiple arc-shaped support plates 26 are fixedly installed at the bottom of the quenching chamber 21. These arc-shaped support plates 26 are distributed at intervals along the serpentine trajectory of the temperature control coil 3, and the concave surface of the arc-shaped support plates 26 is in contact with the outer wall of the temperature control coil 3. Both temperature control coils 3 are supported on the arc-shaped support plates 26 and suspended from the bottom of the quenching chamber 21 by the arc-shaped support plates 26. The temperature control coil 3 has a serpentine curved structure and needs to bear the temperature control medium flowing inside for a long time, so it has a certain weight. The arc-shaped support plates 26 provide uniform support force to the coil through the spaced support points, preventing the coil from sagging or shifting due to its own weight or the impact of the medium. Structural deformation ensures the overall stability of the coil and the smooth flow of the temperature control medium within the coil. Supported by the arc-shaped support plate 26, the temperature control coil 3 remains suspended from the bottom of the quenching chamber 21. This prevents direct contact between the coil and impurities deposited at the bottom of the chamber (such as workpiece debris and oxide scale), thus preventing impurities from abrading the outer wall of the coil or blocking the contact channel between the coil and the cooling medium. Furthermore, the suspended design allows the cooling medium in the quenching chamber 21 to fully envelop the outer wall of the coil. Combined with the serpentine structure, this further expands the heat exchange area, improves the heat transfer efficiency between the temperature control medium and the cooling medium, and ensures more precise and efficient temperature regulation in the quenching chamber 21.

[0033] To prevent impurities from entering the pump body 4, filter screens 45 are threadedly connected to the ports of the cross-flow branch pipe 43 and the vertical flow branch pipe 44. During the quenching process, workpiece machining debris, metal oxide scale, and other impurities may be generated in the quenching chamber 21. If these impurities enter the cross-flow branch pipe 43 and the vertical flow branch pipe 44 with the cooling medium, they can easily cause pipe blockage or even enter the pump body 4 and damage it. The filter screens 45 can directly intercept these impurities at the port of the branch pipe, preventing them from entering the water circulation channel, ensuring the normal operation of the suction pipe 41, the delivery pipe 42, and the pump body 4, and reducing the probability of equipment failure.

[0034] To prevent heat loss, both the suction pipe 41 and the delivery pipe 42 are wrapped with insulation cotton. The insulation cotton greatly reduces the heat loss of the cooling medium during transportation by blocking the heat transfer between the water pipes (suction pipe 41, delivery pipe 42, cross flow branch pipe 43, and vertical flow branch pipe 44) and the external environment, ensuring that it can still maintain the design temperature when it enters the quenching chamber 21, thus ensuring a stable cooling effect.

[0035] In the embodiments of this utility model, please refer to Figure 1 and Figure 6 A protective frame 5 extending into the quenching chamber 21 is installed at the working port 22. A U-shaped support plate 51 fixedly connected to the protective frame 5 is attached to the upper end face of the box body 2. Z-shaped handles 52 are symmetrically fixedly installed on both sides of the U-shaped support plate 51.

[0036] It should be noted that during the process of the workpiece being placed into and removed from the quenching chamber 21 through the working port 22, the protective frame 5 can prevent the workpiece from accidentally slipping or colliding with the inner wall of the quenching chamber 21 or with components such as the temperature control coil 3 and branch pipes (crossflow branch pipe 43 and vertical flow branch pipe 44), thus avoiding damage to the workpiece or core components due to collision, ensuring the quenching quality of the workpiece and the safe operation of the equipment. The U-shaped support plate 51, through its contact with the upper surface of the box 2 and its fixed connection with the protective frame 5, transmits the force of the protective frame 5 to the box 2, preventing the protective frame 5 from shaking or deforming due to its extension into the quenching chamber 21, ensuring that the protective structure remains stable and reliable throughout the quenching process. The Z-shaped handle 52 provides convenience for the installation and disassembly of the protective frame 5.

[0037] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable temperature quenching and cooling device, comprising a mounting base (1), characterized in that: A box (2) is fixedly installed on the mounting base (1). The box (2) has an elliptical quenching cavity (21) inside, and a working port (22) communicating with the quenching cavity (21) is opened at the upper end of the box (2). Two temperature control coils (3) are installed at the bottom of the quenching chamber (21), and each temperature control coil (3) has a serpentine bending structure. Both ends of the two temperature control coils (3) penetrate vertically through the bottom wall of the box body (2) and extend laterally to the outside of the box body (2). Both ends of the two temperature control coils (3) are fixedly installed with connectors (31). Two pump bodies (4) are fixedly installed on the mounting base (1) on both sides of the housing (2). The input and output ends of the two pump bodies (4) are fixedly connected to a suction pipe (41) and a water delivery pipe (42). Two rows of horizontally distributed branch pipes (43) are fixedly installed on the inner walls of both sides of the quenching chamber (21). The two rows of horizontally distributed branch pipes (43) on one side are connected to the suction pipe (41) and the water delivery pipe (42) on the same side of the pump body (4), respectively. The two rows of horizontally distributed branch pipes (43) on the other side are connected to the water delivery pipe (42) and the suction pipe (41) on the same side of the pump body (4), respectively. Two rows of vertically distributed branch pipes (44) are fixedly connected to the two water delivery pipes (42). The end of the two vertically distributed branch pipes (44) away from the water delivery pipe (42) is close to the center of the quenching chamber (21) and is vertically upward.

2. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, The bottom of the box (2) is fixedly installed with a drain pipe (23) that communicates with the bottom of the quenching chamber (21), and the drain pipe (23) is equipped with an on / off solenoid valve (24) for controlling the drain pipe (23).

3. The adjustable temperature quenching and cooling device according to claim 2, characterized in that, The bottom of the mounting base (1) is fixedly equipped with a support foot (11) for raising the height. The temperature control coil (3) and the drain pipe (23) located at the bottom of the box (2) are suspended away from the ground by the support foot (11).

4. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, Two symmetrically distributed thermometers (25) are also fixedly installed on the box (2), and the detection end of the thermometer (25) penetrates through the side wall of the box (2) and extends into the quenching chamber (21).

5. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, Multiple arc-shaped support plates (26) are fixedly installed at the bottom of the quenching chamber (21). The multiple arc-shaped support plates (26) are distributed at intervals along the serpentine trajectory of the temperature control coil (3), and the arc-shaped concave surface of the arc-shaped support plate (26) is in contact with the outer wall of the temperature control coil (3). Both temperature control coils (3) are placed on the arc-shaped support plate (26) and suspended at the bottom of the quenching chamber (21) by the arc-shaped support plate (26).

6. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, Both the cross-flow branch pipe (43) and the vertical flow branch pipe (44) are threaded with filter screens (45).

7. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, Both the water suction pipe (41) and the water delivery pipe (42) are wrapped with insulating cotton.

8. The adjustable temperature quenching and cooling device according to claim 1, characterized in that, A protective frame (5) extending into the quenching chamber (21) is installed at the working port (22). A U-shaped support plate (51) fixedly connected to the protective frame (5) is attached to the upper end face of the box (2). Z-shaped handles (52) are symmetrically fixedly installed on both sides of the U-shaped support plate (51).

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