A marine valve casting heat treatment device

Abstract

The utility model discloses a marine valve casting heat treatment device relates to marine valve casting heat treatment technical field, including heating box and turnover mechanism, the inside of heating box is provided with turnover mechanism, and turnover mechanism includes the bearing of fixed connection in heating box inner surface position, one side of bearing is provided with turnover frame, and the inside fixedly connected with high strength elastic link of turnover frame, one side fixedly connected with U type clamping plate of high strength elastic link, and one side of bearing is provided with driving motor, the outer surface fixedly connected with double -layer heat insulation temperature control mechanism of heating box, and four groups high strength elastic link both ends are fixed in turnover frame inside both sides, compare with current ordinary heat treatment device, can bear high temperature and high pressure environment, guarantee device stable operation under the harsh working condition, and guarantee heat treatment temperature stability, satisfy marine valve casting high -precision heat treatment requirement to castings and carry out all -round heating, improve the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for marine valve castings, specifically a heat treatment device for marine valve castings. Background Technology

[0002] Marine valve casting heat treatment equipment is a specialized device for heat treatment of marine valve castings. It is mainly used to improve the mechanical properties of castings, eliminate casting stress, and stabilize the microstructure and dimensions to meet the requirements of marine valves under complex working conditions such as high pressure and corrosion. Some high-end devices are also equipped with an atmosphere protection system, which prevents the castings from oxidizing and decarburizing at high temperatures by introducing inert gases such as nitrogen and argon. It is especially suitable for the precision heat treatment of marine valve castings such as stainless steel and aluminum alloy. However, existing marine valve casting heat treatment equipment has certain defects.

[0003] For example, application number CN202321679282.3 discloses a casting heat treatment device, belonging to the field of casting heat treatment technology. It solves the problems of uneven heating and slow cooling rates in traditional casting heat treatment devices, which affect the heat treatment rate. The device includes a frame, a clamping mechanism, and a fixing frame. Two sets of fixing beams are installed at the upper end of the frame, and mounting seats are fixed to the upper ends of the two sets of fixing beams. The clamping mechanism and fixing frame are installed on the frame. This utility model heats the casting by spraying flames from a nozzle. During use, starting a first motor causes its shaft to drive a rotating rod through a bevel gear. The rotating rod drives a rocker plate at its lower end to rotate, causing the sliding frame to roll left and right on the fixing beams. Controlling a second motor causes its shaft to drive an eccentric wheel to rotate. The rotation of the eccentric wheel causes a pull rod to pull a vertical plate to swing, thus causing the shaft connecting rod to swing. The two sets of shaft connecting rods are connected by a connecting rod, allowing both sets of shaft connecting rods to swing simultaneously, thereby causing the nozzle to swing and ensuring uniform heating of the casting. However, the casing of the heat treatment device is prone to structural deformation under high temperature and high pressure heat treatment environment, and cannot withstand long-term high-intensity operation. In addition, the castings cannot be heated in all directions, which affects the heat treatment effect and the service life of the device.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a heat treatment device for marine valve castings. Utility Model Content

[0005] The purpose of this utility model is to provide a heat treatment device for marine valve castings, so as to solve the problems mentioned in the background art, that the structure is prone to deformation under high temperature and high pressure heat treatment environment, cannot withstand long-term high-intensity operation, and the castings cannot be heated in all directions, which affects the heat treatment effect and the service life of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat treatment device for marine valve castings, comprising a heating chamber and a tilting mechanism. The tilting mechanism is provided inside the heating chamber, and the tilting mechanism includes a bearing fixedly connected to the inner surface of the heating chamber. A tilting frame is provided on one side of the bearing, and a high-strength elastic rod is fixedly connected inside the tilting frame. A U-shaped clamp is fixedly connected to one side of the high-strength elastic rod, and a drive motor is provided on one side of the bearing. A double-layer heat-insulating temperature control mechanism is fixedly connected to the outer surface of the heating chamber.

[0007] Preferably, the double-layer heat insulation temperature control mechanism includes an inner heat insulation plate fixedly connected to the outer surface of the heating box, and an annular electric heating tube fixedly connected to the outer surface of the inner heat insulation plate. An outer heat insulation plate is fixedly connected to one side of the annular electric heating tube, and a reinforcing plate is fixedly connected to the outer surface of the outer heat insulation plate.

[0008] Preferably, the output end of the drive motor is fixedly connected to the flip frame through the bearing, and a shock-absorbing base is fixedly connected to the bottom of the drive motor.

[0009] Preferably, the inner wall of the heating box is fixedly connected with a grid-shaped steel beam, and the intersection of the grid-shaped steel beam is fixedly connected with a connecting angle iron.

[0010] Preferably, the top of the heating box is rotatably connected to an anti-scalding folding door, and one side of the anti-scalding folding door is fixedly connected to a heat-insulating sealing strip.

[0011] Preferably, a transparent frame is fixedly connected to the center of the anti-scalding folding door, and a ventilation and sealing door is provided on the outer surface of the reinforcing plate.

[0012] Preferably, a control box is fixedly connected to one side of the heating box, and a shock-absorbing bracket is fixedly connected to the bottom of the heating box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the flipping mechanism, ensures uniform heating of valve castings and improves the stability of the heat treatment device. It can closely fit the surface of valve castings of different sizes and shapes, ensuring that the castings do not loosen during high-speed flipping and avoiding surface damage caused by rigid contact. This stable clamping keeps the castings in a fixed posture throughout the heat treatment process, laying the foundation for uniform heating. As the castings change position with the flipping frame, the heat generated by the annular electric heating tube can be evenly radiated to the surface of the castings from all angles, effectively eliminating heating blind spots, ensuring that the temperature of all parts of the castings is consistent, and improving the quality of heat treatment.

[0015] 2. This utility model achieves efficient heating and energy saving through the setting of a double-layer heat insulation temperature control mechanism. The annular electric heating tube releases stable heat into the heating chamber through radiation and convection, further preventing residual heat from being transferred outward, so that the external temperature of the device is always kept within a safe range. The single-layer heat insulation design saves more than 30% of energy, while avoiding damage to the outer shell and other components of the device by high temperature, extending the service life of the equipment. In addition, the stable internal temperature field also reduces the adjustment frequency of the temperature control system, improves the control accuracy, and ensures the stability of the heat treatment process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional open structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the flipping mechanism 2 of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the double-layer heat insulation temperature control mechanism 3 of this utility model.

[0020] In the diagram: 1. Heating chamber; 2. Tilting mechanism; 201. Bearing; 202. Tilting frame; 203. High-strength elastic rod; 204. U-shaped clamp; 3. Double-layer heat-insulating temperature control mechanism; 301. Inner heat insulation board; 302. Annular electric heating tube; 303. Outer heat insulation board; 304. Reinforcing plate; 4. Drive motor; 5. Shock-absorbing base; 6. Grid-shaped steel beam; 7. Connecting angle iron; 8. Anti-scalding folding door; 9. Heat-insulating sealing strip; 10. Transparent frame; 11. Ventilation and sealing door; 12. Control box; 13. Shock-absorbing bracket. 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] like Figures 1-3As shown, a heat treatment device for marine valve castings includes a heating chamber 1 and a tilting mechanism 2. The tilting mechanism 2 is characterized in that it is installed inside the heating chamber 1, and includes a bearing 201 fixedly connected to the inner surface of the heating chamber 1. A tilting frame 202 is provided on one side of the bearing 201, and a high-strength elastic rod 203 is fixedly connected inside the tilting frame 202. A U-shaped clamping plate 204 is fixedly connected to one side of the high-strength elastic rod 203, and a drive motor 4 is provided on one side of the bearing 201. A double-layer heat-insulating temperature control mechanism 3 is fixedly connected to the outer surface of the heating chamber 1. Four sets of high-strength elastic rods are also included. The two ends of the elastic rod 203 are fixed inside the flip frame 202 on both sides. Its elastic deformation characteristics give it adaptive clamping ability. When valve castings of different sizes are placed, the sliders on both sides of the U-shaped clamp 204 are embedded in the guide rail inside the flip frame 202. The casting squeezes the U-shaped clamp 204 and pushes it to slide along the guide rail. At the same time, it compresses the high-strength elastic rod 203 until the U-shaped clamp 204 is tightly attached to the surface of the casting to achieve stable clamping. When the drive motor 4 rotates, the output end of the drive motor 4 drives the flip frame 202 to rotate 360 ​​degrees around the axis of the bearing 201, so that the clamped valve casting is heated evenly during the heat treatment process.

[0023] like Figure 4 As shown, the double-layer heat insulation temperature control mechanism 3 includes an inner heat insulation plate 301 fixedly connected to the outer surface of the heating chamber 1, and an annular electric heating tube 302 fixedly connected to the outer surface of the inner heat insulation plate 301. An outer heat insulation plate 303 is fixedly connected to one side of the annular electric heating tube 302, and a reinforcing plate 304 is fixedly connected to the outer surface of the outer heat insulation plate 303. The inner heat insulation plate 301 is close to the outer surface of the heating chamber 1, and the outer heat insulation plate 303 is wrapped around the outer side of the inner heat insulation plate 301 to form a sealed space. The annular electric heating tube 302 is evenly distributed between the inner heat insulation plate 301 and the outer heat insulation plate 303. After the annular electric heating tube 302 is connected to the power supply, it provides the heat required for heat treatment. The inner heat insulation plate 301 reduces heat loss, and the outer heat insulation plate 303 further blocks the heat from being transferred to the outside.

[0024] Furthermore, the output end of the drive motor 4 is fixedly connected to the rotating frame 202 through the bearing 201, and a shock-absorbing base 5 is fixedly connected to the bottom of the drive motor 4. A grid-shaped steel beam 6 is fixedly connected to the inner wall of the heating box 1, and a connecting angle iron 7 is fixedly connected to the intersection of the grid-shaped steel beam 6. The shock-absorbing base 5 reduces the vibration amplitude of the drive motor 4 during operation and extends the service life of the drive motor 4. The grid-shaped steel beam 6 evenly distributes the internal pressure of the heating box 1 to all parts of the heating box 1. When the device is subjected to high temperature and high pressure, the grid-shaped steel beam 6 effectively resists deformation. The connecting angle iron 7 enhances the node strength and improves the compressive strength of the heating box 1.

[0025] Furthermore, a scalding folding door 8 is rotatably connected to the top of the heating chamber 1, and a heat-insulating sealing strip 9 is fixedly connected to one side of the scalding folding door 8. A transparent frame 10 is fixedly connected to the center of the scalding folding door 8, and a ventilation sealing door 11 is provided on the outer surface of the reinforcing plate 304. The scalding folding door 8 is installed on the top of the heating chamber 1 by a high-temperature resistant hinge. The heat-insulating sealing strip 9 ensures a seal to prevent heat and steam from escaping. The transparent frame 10 facilitates observation of the heating status inside the heating chamber 1. The ventilation sealing door 11 can adjust the air circulation inside the heating chamber 1. When the temperature is too high, the channel is opened to expel hot air and lower the temperature.

[0026] Furthermore, a control box 12 is fixedly connected to one side of the heating chamber 1, and a shock-absorbing bracket 13 is fixedly connected to the bottom of the heating chamber 1. The control box 12 is equipped with multiple power connection ports of various specifications and is connected to the annular electric heating tube 302 through a high-temperature resistant cable. The shock-absorbing bracket 13 adopts a combination structure of spring and damper, and anti-slip rubber pads are installed at the bottom to effectively reduce the shaking of the device and maintain its stable operation.

[0027] Working principle: When using this marine valve casting heat treatment device, the valve casting is first placed on the surface of the U-shaped clamp 204 of the flipping mechanism 2. Under the action of the high-strength elastic rod 203, the U-shaped clamp 204 slides along the guide rail opened inside the flipping frame 202, firmly clamping different casting sizes. The grid-shaped steel beam 6 and the connecting angle iron 7 enhance the strength of the heating box 1. At the same time, the control box 12 supplies power to the annular electric heating tube 302 through the power connection port, providing heat to the inside of the heating box 1. Then, the drive motor 4 is started to rotate the flipping frame 202 360 degrees, so that the casting is heated from all directions. The outer layer of the double-layer heat-insulating temperature control mechanism 3 is insulated. The hot plate 303 and the reinforcing plate 304 form an insulation layer to reduce heat loss. The operator can observe the internal situation through the transparent frame 10 on the anti-scalding folding door 8. The heat insulation sealing strip 9 ensures the airtightness of the heating chamber 1. The ventilation sealing door 11 can regulate the air circulation inside the heating chamber 1. Finally, after the heat treatment is completed, the annular electric heating tube 302 is turned off. After the temperature drops to a safe range, the anti-scalding folding door 8 is opened to take out the casting. During this period, if the device vibrates, the shock-absorbing base 5 and the shock-absorbing bracket 13 continue to play a buffering role, effectively reducing the impact of vibration on the internal components of the device and extending the service life of the equipment. This is the working principle of the heat treatment device for marine valve castings.

Claims

1. A marine valve casting heat treatment apparatus comprising a heating chamber (1) and a turnover mechanism (2), characterized in that, The heating chamber (1) is provided with a flipping mechanism (2) inside, and the flipping mechanism (2) includes a bearing (201) fixedly connected to the inner surface of the heating chamber (1). A flipping frame (202) is provided on one side of the bearing (201), and a high-strength elastic rod (203) is fixedly connected inside the flipping frame (202). A U-shaped clamp (204) is fixedly connected on one side of the high-strength elastic rod (203), and a drive motor (4) is provided on one side of the bearing (201). A double-layer heat-insulating temperature control mechanism (3) is fixedly connected to the outer surface of the heating chamber (1).

2. The heat treatment apparatus for marine valve castings according to claim 1, characterized in that, The double-layer heat insulation temperature control mechanism (3) includes an inner heat insulation plate (301) fixedly connected to the outer surface of the heating box (1), and an annular electric heating tube (302) is fixedly connected to the outer surface of the inner heat insulation plate (301). An outer heat insulation plate (303) is fixedly connected to one side of the annular electric heating tube (302), and a reinforcing plate (304) is fixedly connected to the outer surface of the outer heat insulation plate (303).

3. The heat treatment apparatus for marine valve castings according to claim 1, characterized in that, The output end of the drive motor (4) is fixedly connected to the flip frame (202) through the bearing (201), and the bottom of the drive motor (4) is fixedly connected to the shock-absorbing base (5).

4. The heat treatment apparatus for marine valve castings according to claim 1, characterized in that, The inner wall of the heating box (1) is fixedly connected with a grid-shaped steel beam (6), and a connecting angle iron (7) is fixedly connected at the intersection of the grid-shaped steel beam (6).

5. The heat treatment apparatus for marine valve castings according to claim 1, characterized in that, The top of the heating box (1) is rotatably connected to a heat-resistant folding door (8), and a heat-insulating sealing strip (9) is fixedly connected to one side of the heat-resistant folding door (8).

6. A heat treatment apparatus for marine valve castings according to claim 5, characterized in that, A transparent frame (10) is fixedly connected to the center of the anti-scalding folding door (8), and a ventilation and sealing door (11) is provided on the outer surface of the reinforcing plate (304).

7. A heat treatment apparatus for marine valve castings according to claim 1, characterized in that, A control box (12) is fixedly connected to one side of the heating box (1), and a shock-absorbing bracket (13) is fixedly connected to the bottom of the heating box (1).

Images