Quenching medium alternate preheating and cooling circulation system

Abstract

This utility model discloses an alternating preheating and cooling circulation system for quenching media, including a quenching tank with a preheating mechanism and a cooling mechanism. A mounting plate is connected to both sides of the top of the quenching tank, and a housing is mounted on the top of each mounting plate. The cooling mechanism is connected to one of the housings, and the preheating mechanism is connected to the other. A lower pipe, communicating with its inner cavity and penetrating the mounting plate, is installed at the bottom of each housing. A horizontal pipe, communicating with its inner cavity, is connected to one side of the lower pipe. Pulse pipes, communicating with their inner cavity, are evenly installed along the length of the horizontal pipe. A siphon water delivery mechanism is provided within the housing, and a temperature sensor located below one of the mounting plates is installed within the quenching tank. This utility model, through the principle of siphon pulses, can intermittently spray high-speed fluid, thereby strongly agitating the medium within the quenching tank and effectively eliminating temperature stratification between the media.

Description

Technical Field

[0001] This utility model relates to the technical field of quenching auxiliary equipment, specifically to an alternating preheating and cooling cycle system for quenching media. Background Technology

[0002] Traditional quenching processes often employ static or simple circulation methods for the quenching medium, resulting in low fluidity and uneven temperature distribution.

[0003] A quenching medium cooling device, disclosed in CN220643185U, includes a quenching tank, a water-cooling circulation mechanism, and a refrigeration mechanism. Support legs are provided at the four corners of the bottom of the quenching tank. The water-cooling circulation mechanism includes cooling pipes. Two S-shaped cooling pipes are mounted on the front and rear sides of the quenching tank via cooling pipe mounting brackets. A cooling cylinder is located on the left side of the quenching tank. The right end outlet of the cooling cylinder is connected to the inlet of a water distribution pipe. The outlet of the water distribution pipe is connected to the inlet ends of the two cooling pipes. The outlet ends of both cooling pipes are connected to one end of a return water pipe. The other end of the return water pipe passes through the top right end of the quenching tank and connects to the inlet port of a water pump. The quenching medium can be agitated by stirring blades to ensure uniform temperature mixing within the quenching tank. However, this mechanical stirring method has the following disadvantages: the underwater motor and stirring blades located inside the quenching medium are susceptible to corrosion; the underwater motor may leak electricity; and subsequent inspection and maintenance are inconvenient. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: an alternating preheating and cooling circulation system for quenching media, comprising a quenching tank, a preheating mechanism and a cooling mechanism on the quenching tank, a mounting plate connected to both sides of the top of the quenching tank, a box mounted on the top of each of the two mounting plates, the cooling mechanism connected to one of the boxes, the preheating mechanism connected to the other box, a lower pipe connected to the bottom of each of the two boxes and communicating with its inner cavity and penetrating the mounting plate, a horizontal pipe connected to its inner cavity connected to one side of the lower pipe, pulse pipes communicating with its inner cavity evenly installed along the length of the horizontal pipe, a siphon water delivery mechanism provided in the inner cavity of the box, and a temperature sensor located below one of the mounting plates installed in the inner cavity of the quenching tank.

[0005] Preferably, the cooling mechanism includes a plate cooler disposed on one side of the quenching tank, and a cooling circulation pump for extracting the quenching medium inside the quenching tank is installed on one side of the quenching tank. The outlet of the cooling circulation pump is connected to the plate cooler through a pipe, and one of the housings is connected to the plate cooler through a pipe.

[0006] Preferably, the preheating mechanism includes a plate heat exchanger disposed on the other side of the quenching tank, a preheating circulation pump for extracting quenching medium from the quenching tank is installed on one side of the quenching tank, the outlet of the preheating circulation pump is connected to the plate heat exchanger through a pipe, and the other box is connected to the plate heat exchanger through a pipe.

[0007] Preferably, the two horizontal tubes are distributed vertically, and the pulse tubes on the two horizontal tubes are staggered.

[0008] Preferably, the siphon water delivery mechanism includes an adjusting cover, which is movably disposed in the inner cavity of the box. The lower pipe at the bottom of the box extends into its inner cavity, and the top end of the lower pipe extends into the inner cavity of the adjusting cover. Both sides of the adjusting cover are equipped with U-shaped mounting pipes, one end of which is located in the inner cavity of the adjusting cover.

[0009] Preferably, the top of the housing is threadedly connected to an adjusting screw whose bottom end extends into the inner cavity of the housing. The top of the adjusting screw is equipped with an operating handle, and its bottom end is rotatably connected to the adjusting cover via a bearing.

[0010] Preferably, the inner cavity of the quenching tank is equipped with a placement block located above two horizontal tubes, and the inner cavity of the quenching tank is equipped with a grid whose bottom rests on the placement block.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model utilizes the siphon pulse principle to intermittently spray high-speed fluid, thereby strongly agitating the medium in the quenching tank, enabling the medium at different temperatures to mix fully and effectively eliminating temperature stratification between the medium.

[0013] 2. This utility model generates a strong water flow disturbance through the siphon pulse principle, which replaces the high-energy-consuming mechanical stirring mechanism, directly reducing power consumption and avoiding the wear, leakage and failure problems that are prone to occur in mechanical stirrers in high-temperature and corrosive media environments, and can be easily inspected and maintained. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention with the grille removed;

[0016] Figure 3 This is a schematic diagram of the structure of a horizontal tube.

[0017] Figure 4 This is a schematic diagram of the pulse tube structure;

[0018] Figure 5 A schematic diagram of the structure of the adjustable cover;

[0019] Figure 6 This is a schematic diagram of the planar structure of the mounting pipe.

[0020] In the diagram: 1. Quenching tank; 2. Plate cooler; 3. Cooling circulation pump; 4. Mounting plate; 5. Box; 6. Plate heat exchanger; 7. Preheating circulation pump; 8. Temperature sensor; 9. Lower tube; 10. Horizontal tube; 11. Pulse tube; 12. Adjusting cover; 13. Mounting pipe; 14. Adjusting screw; 15. Operating handle; 16. Grille; 17. Placement block. Detailed Implementation

[0021] 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 some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-6 This utility model provides a technical solution: an alternating preheating and cooling circulation system for quenching media, including a quenching tank 1. The quenching tank 1 is equipped with a preheating mechanism and a cooling mechanism. A mounting plate 4 is connected to both sides of the top of the quenching tank 1. A box 5 is installed on the top of each of the two mounting plates 4. The cooling mechanism is connected to one of the box 5, and the preheating mechanism is connected to the other box 5. A lower pipe 9 is installed at the bottom of each of the two box 5, communicating with its inner cavity and penetrating through the mounting plate 4. A horizontal pipe 10 communicating with its inner cavity is connected to one side of the lower pipe 9. Pulse pipes 11 communicating with its inner cavity are evenly installed along the length of the horizontal pipe 10. A siphon water delivery mechanism is provided in the inner cavity of the box 5. A temperature sensor 8 located below one of the mounting plates 4 is installed in the inner cavity of the quenching tank 1.

[0023] The quenching tank 1 contains quenching medium. When the initial temperature of the quenching medium does not reach the lower limit of the process requirements, the quenching medium can be preheated by a preheating mechanism.

[0024] After the workpiece is quenched, the temperature of the quenching medium rises sharply. At this time, the quenching medium can be cooled down by a cooling mechanism to maintain its performance.

[0025] The preheating mechanism and the cooling mechanism are controlled by the same PLC. The temperature sensor 8 in the quenching tank 1 is electrically connected to the PLC and can monitor the temperature of the quenching medium.

[0026] The cooling mechanism includes a plate cooler 2 disposed on one side of the quenching tank 1. A cooling circulation pump 3 for extracting the quenching medium inside the quenching tank 1 is installed on one side of the quenching tank 1. The outlet of the cooling circulation pump 3 is connected to the plate cooler 2 through a pipe. One of the housings 5 ​​is connected to the plate cooler 2 through a pipe.

[0027] The inlet of the cooling circulation pump 3 is connected to the quenching tank 1 through a pipeline. The cooling circulation pump 3 can pump the quenching medium in the quenching tank 1 to the plate cooler 2. The medium cooled by the plate cooler 2 can enter the box 5 and then be discharged through the siphon water delivery mechanism.

[0028] The preheating mechanism includes a plate heat exchanger 6 located on the other side of the quenching tank 1. A preheating circulation pump 7 for extracting the quenching medium inside the quenching tank 1 is installed on one side of the quenching tank 1. The outlet of the preheating circulation pump 7 is connected to the plate heat exchanger 6 through a pipe. The other box 5 is connected to the plate heat exchanger 6 through a pipe.

[0029] The inlet of the preheating circulation pump 7 is connected to the quenching tank 1 through a pipeline. The preheating circulation pump 7 can pump the quenching medium in the quenching tank 1 to the plate heat exchanger 6. The medium heated by the plate heat exchanger 6 can enter the box 5 and then be discharged through the siphon water delivery mechanism.

[0030] The two horizontal tubes 10 are distributed vertically, and the pulse tubes 11 on the two horizontal tubes 10 are staggered.

[0031] One horizontal tube 10, in conjunction with the pulse tube 11, discharges the preheated medium, while the other horizontal tube 10, in conjunction with the pulse tube 11, discharges the cooled medium. The two tubes do not interfere with each other.

[0032] The siphon water delivery mechanism includes an adjusting cover 12, which is movably disposed in the inner cavity of the housing 5. The lower pipe 9 at the bottom of the housing 5 extends into its inner cavity, and the top end of the lower pipe 9 extends into the inner cavity of the adjusting cover 12. Both sides of the adjusting cover 12 are equipped with U-shaped mounting pipes 13, one end of which is located in the inner cavity of the adjusting cover 12.

[0033] The pipes connecting the plate cooler 2 and the plate heat exchanger 6 to the inner cavity of the housing 5 are located above the top of the lower tube 9. When the cooled or preheated medium is transported into the housing 5, as the liquid level in the housing 5 rises, the medium can enter the inner cavity of the regulating hood 12. When the liquid level of the medium is higher than the top of the lower tube 9, the medium can flow into the lower tube 9. The medium falling along the lower tube 9 can carry away the air in the inner cavity of the regulating hood 12, creating a negative pressure state in the inner cavity of the regulating hood 12. Under the action of atmospheric pressure inside and outside the regulating hood 12, the medium in the housing 5 will quickly enter the inner cavity of the regulating hood 12 through the mounting pipe 13. At this time, a pulse is generated, and the medium in the regulating hood 12 will quickly pass through the lower tube 9 and finally be discharged through the horizontal pipe 10 and the pulse pipe 11.

[0034] Because the medium flows very fast during pulse, the medium discharged through the pulse tube 11 can disturb the medium inside the quenching tank 1, thereby promoting the mixing of media at different temperatures. This eliminates the need for mechanical stirring, saves the electrical energy consumed by mechanical stirring during operation, and is relatively easy to maintain.

[0035] The top of the housing 5 is threadedly connected to an adjusting screw 14 whose bottom end extends into the inner cavity of the housing 5. An operating handle 15 is installed at the top of the adjusting screw 14, and its bottom end is rotatably connected to the adjusting cover 12 through a bearing.

[0036] Rotating the operating handle 15 causes the adjusting screw 14 to drive the adjusting cover 12 to rise or fall, thus adjusting the height of the adjusting cover 12 relative to the lower tube 9.

[0037] The inner cavity of the quenching tank 1 is equipped with a placement block 17 located above two horizontal tubes 10, and the inner cavity of the quenching tank 1 is equipped with a grid 16 whose bottom rests on the placement block 17.

[0038] When the workpiece is quenched, the grid 16 can prevent the workpiece from contacting the horizontal tube 10 and the pulse tube 11.

Claims

1. A quenching medium alternating preheating and cooling circulation system, comprising a quenching tank (1), characterized in that: The quenching tank (1) is provided with a preheating mechanism and a cooling mechanism. A mounting plate (4) is connected to both sides of the top of the quenching tank (1). A box (5) is installed on the top of both mounting plates (4). The cooling mechanism is connected to one of the boxes (5). The preheating mechanism is connected to the other box (5). A lower tube (9) is installed at the bottom of both boxes (5) and communicates with its inner cavity and passes through the mounting plate (4). A horizontal tube (10) is connected to one side of the lower tube (9) and communicates with its inner cavity. A pulse tube (11) is evenly installed along the length of the horizontal tube (10) and communicates with its inner cavity. A siphon water supply mechanism is provided in the inner cavity of the box (5). A temperature sensor (8) located below one of the mounting plates (4) is installed in the inner cavity of the quenching tank (1).

2. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The cooling mechanism includes a plate cooler (2) disposed on one side of the quenching tank (1), and a cooling circulation pump (3) for extracting the quenching medium inside the quenching tank (1) is installed on one side of the quenching tank (1). The outlet of the cooling circulation pump (3) is connected to the plate cooler (2) through a pipe, and one of the boxes (5) is connected to the plate cooler (2) through a pipe.

3. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The preheating mechanism includes a plate heat exchanger (6) located on the other side of the quenching tank (1). A preheating circulation pump (7) for extracting the quenching medium inside the quenching tank (1) is installed on one side of the quenching tank (1). The outlet of the preheating circulation pump (7) is connected to the plate heat exchanger (6) through a pipe. The other box (5) is connected to the plate heat exchanger (6) through a pipe.

4. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The two horizontal tubes (10) are distributed vertically, and the pulse tubes (11) on the two horizontal tubes (10) are staggered.

5. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The siphon water delivery mechanism includes an adjustment cover (12), which is movably located in the inner cavity of the box (5). The lower pipe (9) at the bottom of the box (5) extends into its inner cavity, and the top end of the lower pipe (9) extends into the inner cavity of the adjustment cover (12). Both sides of the adjustment cover (12) are equipped with U-shaped mounting pipes (13), one end of which is located in the inner cavity of the adjustment cover (12).

6. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The top of the housing (5) is threaded with an adjusting screw (14) whose bottom end extends into the inner cavity of the housing (5). The top of the adjusting screw (14) is equipped with an operating handle (15), and its bottom end is rotatably connected to the adjusting cover (12) through a bearing.

7. The alternating preheating and cooling cycle system for quenching media according to claim 1, characterized in that: The quenching tank (1) has a placement block (17) installed above two horizontal tubes (10) in its inner cavity, and a grid (16) with its bottom resting on the placement block (17) is installed in the inner cavity of the quenching tank (1).

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