Surface heat treatment equipment for hydraulic pipe fitting machining and operation method of surface heat treatment equipment

Abstract

The invention belongs to the technical field of hydraulic pipe fitting machining, and discloses surface heat treatment equipment for hydraulic pipe fitting machining, which comprises a heat treatment box, a pushing plate and a bearing plate, the top of the heat treatment box is provided with a stand column, the heat treatment box is internally provided with a heating structure, the top end of the stand column is provided with a top plate, and the top plate is provided with a pushing structure; the pushing plate is connected with the pushing structure, a fixing ring is arranged on the pushing plate, a driving structure is arranged on the pushing plate, the bearing plate is movably connected with the driving structure, and a bearing ring is arranged on the bearing plate. The motor drives the transmission shaft and the bearing plate on the transmission shaft to rotate, the bearing plate drives the bearing ring and the hydraulic pipe fitting in the bearing ring to rotate, the hydraulic pipe fitting makes full contact with heat, the surface of the hydraulic pipe fitting is fully subjected to heat treatment, and therefore the heat treatment efficiency and the heat treatment quality of the hydraulic pipe fitting are improved; and the quality performance of the hydraulic pipe fitting is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic pipe fitting production, and specifically relates to a surface heat treatment device and an operation method for processing hydraulic pipe fittings. Background Art

[0002] Hydraulic pipe fittings include pipes and pipe joints. During the production process, the surface of hydraulic pipe fittings needs to be heat treated to ensure the quality of the hydraulic pipe fittings. Most of the existing surface heat treatment devices for processing hydraulic pipe fittings.

[0003] For example, the patent with the patent publication number CN216337857U discloses a surface heat treatment device for processing hydraulic pipe fittings, including a main body structure, a spray box and a heat dissipation fan. A connecting frame is arranged inside the main body structure, and magnetic rings are evenly distributed on the connecting frame. At the same time, the side of the connecting frame away from the magnetic ring is connected to the inner wall of one side of the main body structure through a connecting piece. Transmission rollers are arranged on both sides of the main body structure, and the transmission rollers are connected to the main body structure through fixing plates. Two groups of spray boxes are symmetrically arranged, and the spray boxes are arranged on one side of the magnetic rings. The spray boxes are connected to a liquid pump through a conveying pipeline, and the liquid pump is arranged in a water storage cavity inside the main body structure. This surface heat treatment device for processing hydraulic pipe fittings is provided with transmission rollers, which can drive the hydraulic pipe to move so that it passes through the inside of the magnetic ring and the nozzle in sequence, so that the magnetic ring and the nozzle can be used to heat and spray-cool the hydraulic pipe, thereby facilitating the enrichment of its functionality and improving the heat treatment efficiency of the device.

[0004] The above patent simply uses a fan to simply dissipate heat outside the water storage cavity. After the equipment runs for a long time, the temperature of the coolant that continuously cools the high-temperature hydraulic pipe may also increase accordingly, which may lead to an unclear heat treatment effect. On the other hand, there are problems such as inability to adaptively adjust according to hydraulic pipe fittings of different sizes, low versatility, and non-circulating flow of heat. Based on this, the applicant has proposed a surface heat treatment device and an operation method for processing hydraulic pipe fittings. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems existing in the existing heat treatment of hydraulic pipe fittings, such as poor heat treatment effect, inability to adaptively adjust according to hydraulic pipe fittings of different sizes, low versatility, and non-circulating flow of heat, and to provide a surface heat treatment device and an operation method for processing hydraulic pipe fittings with reasonable structural design, which can adaptively adjust according to hydraulic pipe fittings of different sizes, have good heat treatment effect, high versatility, and circulating flow of heat.

[0006] The technical solutions adopted to solve the technical problems of the present invention are as follows:

[0007] A surface heat treatment device for processing hydraulic pipe fittings, comprising a heat treatment box, a push plate and a bearing plate. A column is provided at the top of the heat treatment box, a heating structure is provided inside the heat treatment box, a top plate is provided at the top of the column, and a pushing structure is provided on the top plate. The heating structure can generate a large amount of heat, providing sufficient heat for the surface heat treatment of hydraulic pipe fittings, thereby improving the heat treatment efficiency and quality of hydraulic pipe fittings. The push plate is connected to the pushing structure, a fixing ring is provided on the push plate, and a driving structure is provided on the push plate. The bearing plate is movably connected to the driving structure, and a bearing ring is provided on the bearing plate. The hydraulic pipe fitting to be heat-treated is hoisted into the bearing ring. Under the action of the pushing structure, the push plate drives the bearing plate, the bearing ring and the hydraulic pipe fitting in the bearing ring to move downward, so that the hydraulic pipe fitting enters the heat treatment box. The fixing ring contacts the inner wall of the top of the heat treatment box, sealing the heat treatment box and preventing the heat in the heat treatment box from flowing out between the inner wall of the heat treatment box and the fixing ring, improving the utilization efficiency of heat. The bearing plate rotates under the action of the driving structure, driving the hydraulic pipe fitting to rotate in the heat treatment box, so that the heat in the heat treatment box fully heat-treats the hydraulic pipe fitting, thereby improving the heat treatment efficiency and quality of the hydraulic pipe fitting.

[0008] Preferably, the heating structure includes heating rods. Heating grooves are provided on both the inner side wall and the bottom of the heat treatment box, heating blocks are provided on the inner wall of the heating grooves, and the heating rods are arranged between the heating blocks. Heating rods are provided on both the inner side wall and the bottom of the heat treatment box, which can make the heat flow from the inner side wall and the bottom of the heat treatment to the middle of the heat treatment box, quickly raising the temperature inside the heat treatment box during the heat treatment of the hydraulic pipe fitting, quickly heat-treating the hydraulic pipe fitting, and improving the heat treatment efficiency and quality of the hydraulic pipe fitting.

[0009] Preferably, the pushing structure includes a hydraulic cylinder. The hydraulic cylinder is provided on the top plate, a piston rod is provided on the hydraulic cylinder, a connecting rod is provided on the piston rod, and the connecting rod is connected to the push plate. The hydraulic cylinder and the piston rod drive the push plate to rise or fall. Under the action of the pushing structure, the push plate drives the bearing plate, the bearing ring and the hydraulic pipe fitting in the bearing ring to move downward, so that the hydraulic pipe fitting enters the heat treatment box. The fixing ring contacts the inner wall of the top of the heat treatment box, sealing the heat treatment box and preventing the heat in the heat treatment box from flowing out between the inner wall of the heat treatment box and the fixing ring, improving the utilization efficiency of heat.

[0010] Preferably, a limiting ring is provided on the push plate, and the column passes vertically through the limiting ring. The push plate moves vertically under the action of the hydraulic cylinder, and the limiting ring rises or falls along the column, so that the limiting ring plays a limiting role in the vertically moving push plate, enabling the fixing ring on the push plate to accurately enter the heat treatment box, thereby improving the sealing performance between the heat treatment box and the fixing ring.

[0011] Preferably, the driving structure includes a motor disposed on the pushing plate. A transmission shaft is provided on the motor and connected to the bearing plate. The motor drives the transmission shaft and the bearing plate thereon to rotate. The bearing plate drives the bearing ring and the hydraulic pipe fittings inside the bearing ring to rotate, enabling the hydraulic pipe fittings to come into full contact with heat and fully performing heat treatment on the surface of the hydraulic pipe fittings, thereby improving the heat treatment efficiency and quality of the hydraulic pipe fittings, and further enhancing the quality performance of the hydraulic pipe fittings.

[0012] Preferably, fixing grooves are provided at the edge of the bearing plate. Auxiliary wheels are provided in the fixing grooves through pin shafts. A support plate is provided at the inner bottom of the fixing ring and connected to the bottom of the auxiliary wheels. The bearing plate rotates inside the fixing ring under the action of the motor, and the auxiliary wheels rotate on the support plate, enabling the support plate to hold the auxiliary wheels, so that the bearing plate drives the hydraulic pipe fittings to rotate smoothly and fully performs heat treatment on the hydraulic pipe fittings.

[0013] Preferably, an inner cavity is provided inside the pushing plate. An exhaust duct communicating with the inner cavity is provided at the bottom of the pushing plate, and an exhaust fan is provided in the exhaust duct. A ventilation cavity communicating with the inner cavity is provided inside the fixing ring, and an air inlet duct communicating with the ventilation cavity is provided at the bottom of the fixing ring. The exhaust fan discharges the air flow in the inner cavity of the pushing plate from the exhaust duct, forming a negative pressure in the inner cavity of the pushing plate, so that the air flow at the bottom of the heat treatment box carries heat and enters the ventilation cavity through the air inlet duct, and flows into the inner cavity from the ventilation cavity. Finally, the air flow carries heat and is discharged into the heat treatment box, enabling the air flow and heat to circulate in the heat treatment box and the inner cavity, evenly distributing the heat in the heat treatment box and performing uniform heat treatment on the hydraulic pipe fittings. On the other hand, the exhaust fan blows the air flow carrying heat from top to bottom, enabling the air flow carrying heat to enter the hydraulic pipe fittings and performing heat treatment on the inner surface of the hydraulic pipe fittings, further improving the heat treatment quality of the hydraulic pipe fittings.

[0014] Preferably, a sealing layer is provided on the outer wall of the fixing ring. The hydraulic cylinder and the piston rod push the pushing plate downward. The pushing plate drives the fixing ring, the motor, the bearing plate, the bearing ring and the hydraulic pipe fittings inside the bearing ring to move downward, enabling the hydraulic pipe fittings to enter the heat treatment box. The fixing ring contacts the inner wall of the top of the heat treatment box, and the sealing layer seals the heat treatment box, improving the sealing performance between the heat treatment box and the fixing ring, preventing the heat in the heat treatment box from flowing out between the heat treatment box and the fixing ring, and reducing heat waste.

[0015] Preferably, the bearing ring is configured as a replaceable structure on the bearing plate. A fastening rod is arranged on the inner wall of the bearing ring through a spring, and the fastening rod is configured as an arc-shaped structure. The bearing ring and the bearing plate are connected by threads, which facilitates the selection of the corresponding bearing ring according to different hydraulic pipe fittings, enables the heat treatment equipment to be applicable to different hydraulic pipe fittings, improves the versatility of the heat treatment equipment, expands the applicable range of the heat treatment equipment, reduces the cost of manufacturing multiple sets of heat treatment equipment. The hydraulic pipe fitting is hoisted into the bearing ring. The hydraulic pipe fitting squeezes the fastening rod, and the fastening rod squeezes the spring. The compressed spring pushes the fastening rod to clamp the hydraulic pipe fitting, thereby improving the stability of the hydraulic pipe fitting in the bearing ring. On the other hand, the exhaust fan blows the heat-carrying air flow from top to bottom. The heat-carrying air flow enters the bearing ring and conducts heat treatment on the surface of the hydraulic pipe fitting inside the bearing ring, thereby improving the heat treatment quality of the hydraulic pipe fitting.

[0016] An operation method for a surface heat treatment equipment applicable to the processing of hydraulic pipe fittings, characterized in that the operation method includes the following steps:

[0017] I. Check whether the circuit of the surface heat treatment equipment for hydraulic pipe fitting processing is intact, and check whether the motor, hydraulic cylinder, motor, and heating block are working properly;

[0018] II. Select a suitable bearing ring according to the size of the hydraulic pipe fitting to be surface-treated, install the bearing ring on the bearing plate, vertically place the hydraulic pipe fitting in the bearing ring, and the fastening rod in the bearing ring clamps the hydraulic pipe fitting in the bearing ring, so that the hydraulic pipe fitting is hoisted in the bearing ring;

[0019] III. Start the hydraulic cylinder. The hydraulic cylinder and the piston rod push the push plate downward, and the push plate drives the fixed ring, motor, bearing plate, bearing ring and the hydraulic pipe fitting in the bearing ring to move downward, so that the hydraulic pipe fitting enters the heat treatment box. The fixed ring contacts the inner wall of the top of the heat treatment box, and the sealing layer seals the heat treatment box;

[0020] IV. Start the heating block to make the heating rod between the heating blocks work to generate heat and conduct heat treatment on the hydraulic pipe fitting in the heat treatment box;

[0021] V. Start the motor. The motor drives the transmission shaft and the bearing plate on the transmission shaft to rotate. The bearing plate drives the bearing ring and the hydraulic pipe fitting in the bearing ring to rotate, so that the hydraulic pipe fitting is fully contacted with the heat;

[0022] VI. Start the exhaust fan. The exhaust fan will discharge the air flow in the inner cavity of the push plate from the exhaust pipe. A negative pressure is formed in the inner cavity of the push plate, causing the air flow at the bottom of the heat treatment box to carry heat and enter the ventilation cavity through the air inlet pipe, and then flow from the ventilation cavity into the inner cavity. Finally, the air flow carries heat and is discharged into the heat treatment box, enabling the air flow and heat to circulate in the heat treatment box and the inner cavity, evenly distributing the heat in the heat treatment box, and uniformly heat-treating the hydraulic pipe fittings.

[0023] VII. After the heat treatment of the hydraulic pipe fittings is completed, turn off the motor and start the hydraulic cylinder. The push plate drives the motor and the bearing plate to rise, so that the heat-treated hydraulic pipe fittings are removed from the heat treatment box. Take out the hydraulic pipe fittings in the bearing ring and put in new hydraulic pipe fittings to continue the heat treatment.

[0024] VIII. After the heat treatment of the hydraulic pipe fittings is completed, turn off the heating block, exhaust fan, motor, and hydraulic cylinder, clean the impurities generated during the heat treatment process of the hydraulic pipe fittings, and cut off the power supply.

[0025] Beneficial effects:

[0026] 1. The motor drives the transmission shaft and the bearing plate on the transmission shaft to rotate. The bearing plate drives the bearing ring and the hydraulic pipe fittings in the bearing ring to rotate, enabling the hydraulic pipe fittings to fully contact with the heat, and fully heat-treating the surface of the hydraulic pipe fittings, thereby improving the heat treatment efficiency and quality of the hydraulic pipe fittings, and further enhancing the quality performance of the hydraulic pipe fittings.

[0027] 2. Connect the bearing ring and the bearing plate by threads, which is convenient to select the corresponding bearing ring according to different hydraulic pipe fittings, enabling the heat treatment equipment to be applicable to different hydraulic pipe fittings, improving the versatility of the heat treatment equipment, expanding the applicable range of the heat treatment equipment, reducing the cost of manufacturing multiple sets of heat treatment equipment. Hang the hydraulic pipe fittings in the bearing ring. The hydraulic pipe fittings squeeze the fastening rod, and the fastening rod squeezes the spring. The compressed spring pushes the fastening rod to clamp the hydraulic pipe fittings, thereby improving the stability of the hydraulic pipe fittings in the bearing ring. On the other hand, the exhaust fan blows the air flow carrying heat from top to bottom. The air flow carrying heat enters the bearing ring and heat-treats the surface of the hydraulic pipe fittings inside the bearing ring, thereby improving the heat treatment quality of the hydraulic pipe fittings.

[0028] 3. The exhaust fan discharges the air flow in the inner cavity of the push plate from the exhaust pipe. A negative pressure is formed in the inner cavity of the push plate, causing the air flow at the bottom of the heat treatment box to carry heat and enter the ventilation cavity through the air inlet pipe, and then flow from the ventilation cavity into the inner cavity. Finally, the air flow carries heat and is discharged into the heat treatment box, enabling the air flow and heat to circulate in the heat treatment box and the inner cavity, evenly distributing the heat in the heat treatment box, and uniformly heat-treating the hydraulic pipe fittings, thereby improving the heat treatment quality of the hydraulic pipe fittings. Description of the drawings

[0029] Figure 1 It is a schematic structural diagram of the present invention.

[0030] Figure 2 It is a partial structural schematic diagram of the present invention, showing the connection structure between the push plate and the inner cavity.

[0031] Figure 3 It is a partial structural schematic diagram of the present invention, showing the connection structure between the fixing ring and the air inlet pipe.

[0032] Figure 4 It is a partial structural schematic diagram of the present invention, showing the connection structure between the bearing plate and the bearing ring.

[0033] Figure 5 It is a partial structural schematic diagram of the present invention, showing the connection structure between the bearing ring and the fastening rod.

[0034] Figure 6 It is a partial structural schematic diagram of the present invention, showing the connection structure between the support plate and the auxiliary wheel.

[0035] Figure 7 It is another schematic diagram of the implementation structure of the present invention.

[0036] In the figure: 1. Heat treatment box, 2. Push plate, 3. Bearing plate, 4. Column, 5. Heating groove, 6. Top plate, 7. Heating block, 8. Heating rod, 9. Hydraulic cylinder, 10. Piston rod, 11. Connecting rod, 12. Limit ring, 13. Fixing ring, 14. Inner cavity, 15. Exhaust duct, 16. Air inlet pipe, 17. Sealing layer, 18. Support plate, 19. Ventilation cavity, 20. Exhaust fan, 21. Motor, 22. Transmission shaft, 23. Bearing ring, 24. Spring, 25. Fastening rod, 26. Fixed groove, 27. Connecting rod, 28. Auxiliary wheel, 29. Heat conducting plate. Specific implementation manners

[0037] The present invention will be described in more detail below with reference to the accompanying drawings.

[0038] Embodiment 1:

[0039] As shown in the Figures 1-6 accompanying drawings, a surface heat treatment device for processing hydraulic pipe fittings includes a heat treatment box 1, a push plate 2 and a bearing plate 3. A column 4 is provided at the top of the heat treatment box 1. A heating structure is provided inside the heat treatment box 1. A top plate 6 is provided at the top of the column 4, and a pushing structure is provided on the top plate 6. The push plate 2 is connected to the pushing structure. A fixing ring 13 is provided on the push plate 2, and a driving structure is provided on the push plate 2. The bearing plate 3 is movably connected to the driving structure, and a bearing ring 23 is provided on the bearing plate 3.

[0040] Among them, the heating structure includes a heating rod 8. Heating grooves 5 are provided on the inner side wall and the bottom of the heat treatment box 1. Heating blocks 7 are provided on the inner wall of the heating groove 5. The heating rod 8 is arranged between the heating blocks 7.

[0041] Among them, the pushing structure includes a hydraulic cylinder 9. The hydraulic cylinder 9 is arranged on the top plate 6. A piston rod 10 is arranged on the hydraulic cylinder 9. A connecting rod 11 is arranged on the piston rod 10, and the connecting rod 11 is connected to the pushing plate 2. A limiting ring 12 is arranged on the pushing plate 2, and the vertical column 4 is vertically passed through the limiting ring 12.

[0042] Among them, the driving structure includes a motor 21. The motor 21 is arranged on the pushing plate 2. A transmission shaft 22 is arranged on the motor 21, and the transmission shaft 22 is connected to the bearing plate 3. A fixing groove 26 is arranged at the edge of the bearing plate 3. An auxiliary wheel 28 is arranged in the fixing groove 26 through a pin shaft 27. A supporting plate 18 is arranged at the inner bottom of the fixing ring 13, and the supporting plate 18 is connected to the bottom of the auxiliary wheel 28.

[0043] Among them, a cavity 14 is arranged inside the pushing plate 2. An exhaust duct 15 communicating with the cavity 14 is arranged at the bottom of the pushing plate 2. An exhaust fan 20 is arranged in the exhaust duct 15. A ventilation cavity 19 communicating with the cavity 14 is arranged inside the fixing ring 13. An air inlet duct 16 communicating with the ventilation cavity 19 is arranged at the bottom of the fixing ring 13. A sealing layer 17 is arranged on the outer wall of the fixing ring 13. The bearing ring 23 is set as a structure that can be replaced from the bearing plate 3. A fastening rod 25 is arranged on the inner wall of the bearing ring 23 through a spring 24, and the fastening rod 25 is set as an arc-shaped structure.

[0044] An operation method of a surface heat treatment device suitable for hydraulic pipe fittings processing. The operation method includes the following steps:

[0045] First, check whether the circuit of the surface heat treatment device for hydraulic pipe fittings processing is intact, and check whether the motor 21, hydraulic cylinder 9, motor 21, and heating block 7 are working properly;

[0046] Second, according to the size of the hydraulic pipe fittings to be surface-treated, select a suitable bearing ring 23, install the bearing ring 23 on the bearing plate 3, place the hydraulic pipe fittings vertically in the bearing ring 23, and the fastening rod 25 in the bearing ring 23 clamps the hydraulic pipe fittings in the bearing ring 23, so that the hydraulic pipe fittings are suspended in the bearing ring 23

[0047] Third, start the hydraulic cylinder 9. The hydraulic cylinder 9 and the piston rod 10 push the pushing plate 2 downward. The pushing plate 2 drives the fixing ring 13, motor 21, bearing plate 3, bearing ring 23 and the hydraulic pipe fittings in the bearing ring 23 to move downward, so that the hydraulic pipe fittings enter the heat treatment box 1. The fixing ring 13 contacts the inner wall of the top of the heat treatment box 1, and the sealing layer 17 seals the heat treatment box 1;

[0048] IV. Start the heating block 7 to make the heating rod 8 between the heating blocks 7 generate heat and perform heat treatment on the hydraulic pipe fittings in the heat treatment box 1;

[0049] V. Start the motor 21. The motor 21 drives the transmission shaft 22 and the bearing plate 3 on the transmission shaft 22 to rotate. The bearing plate 3 drives the bearing ring 23 and the hydraulic pipe fittings in the bearing ring 23 to rotate, enabling the hydraulic pipe fittings to come into full contact with the heat;

[0050] VI. Start the exhaust fan 20. The exhaust fan 20 discharges the air flow in the inner cavity 14 of the push plate 2 from the exhaust pipe 15. A negative pressure is formed in the inner cavity 14 of the push plate 2, causing the air flow at the bottom of the heat treatment box 1 to carry heat and enter the ventilation cavity 19 through the air inlet pipe 16, and flow from the ventilation cavity 19 into the inner cavity 14. Finally, the air flow carries heat and is discharged into the heat treatment box 1, enabling the air flow and heat to circulate in the heat treatment box 1 and the inner cavity 14, evenly distributing the heat in the heat treatment box 1, and performing uniform heat treatment on the hydraulic pipe fittings;

[0051] VII. After the heat treatment of the hydraulic pipe fittings is completed, turn off the motor 21 and start the hydraulic cylinder 9. The push plate 2 drives the motor 21 and the bearing plate 3 to rise, so that the heat-treated hydraulic pipe fittings are removed from the heat treatment box 1. Remove the hydraulic pipe fittings in the bearing ring 23 and place new hydraulic pipe fittings to continue the heat treatment;

[0052] VIII. After the heat treatment of the hydraulic pipe fittings is completed, turn off the heating block 7, the exhaust fan 20, the motor 21, and the hydraulic cylinder 9, clean the impurities generated during the heat treatment of the hydraulic pipe fittings, and cut off the power supply.

[0053] Embodiment 2:

[0054] On the basis of Embodiment 1, further explanations are as follows. As shown in the attached Figure 7 figure: A heat conducting plate 29 is provided at the bottom of the heat treatment box 1. The hydraulic pipe fittings suspended in the bearing ring 23 rotate in the heat treatment box 1 along with the bearing plate 3. During the rotation, the hydraulic pipe fittings come into contact with the heat conducting plate 29, enabling the heat on the heat conducting plate 29 to be transferred to the hydraulic pipe fittings, performing sufficient heat treatment on the hydraulic pipe fittings, and thus improving the heat treatment efficiency and quality of the hydraulic pipe fittings.

[0055] Working principle: According to the size of the hydraulic pipe fittings to be surface-treated, select a suitable bearing ring 23, install the bearing ring 23 on the bearing plate 3, place the hydraulic pipe fittings vertically in the bearing ring 23, and the fastening rods 25 in the bearing ring 23 clamp the hydraulic pipe fittings in the bearing ring 23, so that the hydraulic pipe fittings are suspended in the bearing ring 23. Start the hydraulic cylinder 9, and the hydraulic cylinder 9 and the piston rod 10 drive the push plate 2 to rise or fall. Under the action of the hydraulic cylinder 9, the push plate 2 drives the bearing plate 3, the bearing ring 23 and the hydraulic pipe fittings in the bearing ring 23 to move downward, so that the hydraulic pipe fittings enter the heat treatment box 1. The fixed ring 13 contacts the inner wall of the top of the heat treatment box 1, and the sealing layer 17 on the outer wall of the fixed ring 13 seals the heat treatment box 1. Start the heating block 7, so that the heating rods 8 between the heating blocks 7 work to generate heat, and heat-treat the hydraulic pipe fittings in the heat treatment box 1. Start the motor 21, and the motor 21 drives the transmission shaft 22 and the bearing plate 3 on the transmission shaft 22 to rotate. The bearing plate 3 drives the bearing ring 23 and the hydraulic pipe fittings in the bearing ring 23 to rotate, so that the hydraulic pipe fittings are in full contact with the heat. Start the exhaust fan 20, and the exhaust fan 20 discharges the air flow in the inner cavity 14 of the push plate 2 from the exhaust pipe 15. A negative pressure is formed in the inner cavity 14 of the push plate 2, so that the air flow at the bottom of the heat treatment box 1 carries heat and enters the ventilation cavity 19 through the air inlet pipe 16, and flows into the inner cavity 14 from the ventilation cavity 19. Finally, the air flow carries heat and is discharged into the heat treatment box 1, so that the air flow and heat circulate in the heat treatment box 1 and the inner cavity 14, and the heat is evenly distributed in the heat treatment box 1 to uniformly heat-treat the hydraulic pipe fittings. After the heat treatment of the hydraulic pipe fittings is completed, turn off the motor 21, start the hydraulic cylinder 9, and the push plate 2 drives the motor 21 and the bearing plate 3 to rise, so that the heat-treated hydraulic pipe fittings are removed from the heat treatment box 1, take out the hydraulic pipe fittings in the bearing ring 23, and put in new hydraulic pipe fittings to continue the heat treatment.

[0056] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0058] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art.

Claims

1. A surface heat treatment device for hydraulic pipe fittings processing, comprising a heat treatment box, a pushing plate and a bearing plate, characterized in that: A vertical column is provided at the top of the heat treatment box. A heating structure is provided inside the heat treatment box. A top plate is provided at the top of the vertical column, and a pushing structure is provided on the top plate. The pushing plate is connected to the pushing structure. A fixing ring is provided on the pushing plate, and a driving structure is provided on the pushing plate. The bearing plate is movably connected to the driving structure, and a bearing ring is provided on the bearing plate.

2. The surface heat treatment equipment for processing hydraulic pipe fittings according to claim 1, wherein: The heating structure includes heating rods. Heating grooves are provided on the inner side wall and the bottom of the heat treatment box. Heating blocks are provided on the inner wall of the heating grooves. The heating rods are arranged between the heating blocks.

3. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: The pushing structure includes a hydraulic cylinder. The hydraulic cylinder is provided on the top plate. A piston rod is provided on the hydraulic cylinder. A connecting rod is provided on the piston rod, and the connecting rod is connected to the pushing plate.

4. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: A limiting ring is provided on the pushing plate, and the vertical column passes through the limiting ring vertically.

5. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: The driving structure includes a motor. The motor is provided on the pushing plate. A transmission shaft is provided on the motor, and the transmission shaft is connected to the bearing plate.

6. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: Fixing grooves are provided at the edge of the bearing plate. Auxiliary wheels are arranged in the fixing grooves through pin shafts. A supporting plate is provided at the inner bottom of the fixing ring, and the supporting plate is connected to the bottom of the auxiliary wheels.

7. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: An inner cavity is provided inside the pushing plate. An exhaust duct communicating with the inner cavity is provided at the bottom of the pushing plate. An exhaust fan is provided in the exhaust duct. A ventilation cavity communicating with the inner cavity is provided inside the fixing ring, and an air inlet duct communicating with the ventilation cavity is provided at the bottom of the fixing ring.

8. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 7, characterized in that: A sealing layer is provided on the outer wall of the fixing ring.

9. The surface heat treatment equipment for hydraulic pipe fittings processing according to claim 1, characterized in that: The bearing ring is set as a replaceable structure on the bearing plate. A fastening rod is provided on the inner wall of the bearing ring through a spring, and the fastening rod is set as an arc-shaped structure.

10. An operating method for a surface heat treatment device for processing hydraulic pipe fittings as described in claim 1, characterized in that, The operation method includes the following steps:

1. Check whether the circuit of the surface heat treatment equipment for hydraulic pipe fittings processing is intact, and check whether the motor, hydraulic cylinder, motor, and heating block are working properly; 2. Select a suitable bearing ring according to the size of the hydraulic pipe fittings to be surface-treated. Install the bearing ring on the bearing plate. Place the hydraulic pipe fittings vertically in the bearing ring. The fastening rods in the bearing ring clamp the hydraulic pipe fittings in the bearing ring, so that the hydraulic pipe fittings are suspended in the bearing ring; 3. Start the hydraulic cylinder. The hydraulic cylinder and the piston rod push the pushing plate downward. The pushing plate drives the fixing ring, motor, bearing plate, bearing ring and the hydraulic pipe fittings in the bearing ring to move downward, so that the hydraulic pipe fittings enter the heat treatment box. The fixing ring contacts the inner wall of the top of the heat treatment box, and the sealing layer seals the heat treatment box; 4. Start the heating blocks, so that the heating rods between the heating blocks work to generate heat, and perform heat treatment on the hydraulic pipe fittings in the heat treatment box; 5. Start the motor. The motor drives the transmission shaft and the bearing plate on the transmission shaft to rotate. The bearing plate drives the bearing ring and the hydraulic pipe fittings in the bearing ring to rotate, so that the hydraulic pipe fittings are in full contact with the heat. Six, start the exhaust fan. The exhaust fan will push the air flow in the inner cavity of the push plate out through the exhaust pipe. A negative pressure is formed in the inner cavity of the push plate, causing the air flow at the bottom of the heat treatment box to carry heat and enter the ventilation cavity through the air inlet pipe, and then flow from the ventilation cavity into the inner cavity. Finally, the air flow carries heat and is discharged into the heat treatment box, enabling the air flow and heat to circulate in the heat treatment box and the inner cavity, evenly distributing the heat in the heat treatment box and uniformly heat-treating the hydraulic pipe fittings; Seven, after the heat treatment of the hydraulic pipe fittings is completed, turn off the motor and start the hydraulic cylinder. The push plate drives the motor and the bearing plate to rise, so that the heat-treated hydraulic pipe fittings are removed from the heat treatment box. Take out the hydraulic pipe fittings in the bearing ring and put in new hydraulic pipe fittings to continue the heat treatment; Eight, after the heat treatment of the hydraulic pipe fittings is completed, turn off the heating block, the exhaust fan, the motor, and the hydraulic cylinder, clean the impurities generated during the heat treatment of the hydraulic pipe fittings, and cut off the power supply.

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