Surface quenching device for plunger machining

Abstract

The utility model relates to the technical field of plunger processing, and discloses a surface quenching device for plunger processing, which comprises a cooling box, a plurality of groups of rotating rods distributed at equal intervals are rotatably mounted on two sides in the cooling box, and the plurality of groups of rotating rods are distributed at the top of the cooling box in an arc shape. According to the technical scheme, the movable seat is moved to the top of the plunger, the electric push rod is opened to push the abutting cover to move downwards, the arc-shaped heating blocks in the abutting cover are distributed on one side of the top of the plunger, and meanwhile the first motor and the second motor are driven to be matched with the two adjacent rotating rods to be in transmission connection through the transmission toothed belt; according to the plunger quenching device, multiple sets of rotating rods can be driven to rotate, the plunger slowly rotates at the tops of the multiple sets of rotating rods, a rotating screw rod can drive a moving block to move towards one side, and when an arc-shaped heating block continuously and comprehensively heats the outer surface of the plunger, the heated plunger can be rapidly guided into cooling liquid in a cooling box, so that the plunger is efficiently quenched; the device is practical and suitable for being widely popularized and used.

Description

Technical Field

[0001] This utility model relates to the field of plunger processing technology, specifically to a surface hardening device for plunger processing. Background Technology

[0002] Currently, plungers are mostly used as important parts in natural gas and oil and gas extraction machinery. During the processing of plungers, quenching is used to enhance the surface hardness and wear resistance.

[0003] Quenching is a heat treatment process in which steel is heated to a critical temperature Ac3 or above Ac1, held at that temperature for a period of time to austenitize it completely or partially, and then rapidly cooled to below Ms at a cooling rate greater than the critical cooling rate to carry out martensitic transformation.

[0004] For large-volume plungers, quenching remains a challenge. It is difficult to fully heat the surface of large-volume plungers, and it is also difficult to cool them quickly after heating. Therefore, we propose a surface quenching device for plunger processing, which can not only fully heat the plunger, but also efficiently cool it while heating. Utility Model Content

[0005] The purpose of this invention is to provide a surface hardening device for plunger processing, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface hardening device for plunger processing, comprising a cooling box, wherein multiple sets of equidistantly distributed rotating rods are rotatably installed on both sides inside the cooling box, the multiple sets of rotating rods are distributed in an arc shape on the top of the cooling box, and multiple sets of equidistantly distributed convex rollers are fixedly installed on each of the multiple sets of rotating rods; coolant is placed inside the cooling box; a movable seat is installed on one side of the top of the cooling box, and a heating adjustment mechanism is installed inside the movable seat;

[0007] The heating adjustment mechanism includes screws rotatably mounted on both sides inside the movable seat, a movable block threaded onto one end of the screw, a mounting base fixedly mounted on the bottom of the movable block, an electric push rod fixedly mounted in the middle of the mounting base, a cover fixedly mounted on the other end of the electric push rod, and an arc-shaped heating block fixedly mounted inside the cover. A plunger is placed on the top of multiple sets of rotating rods, and the arc-shaped heating block corresponds to the outer wall of the plunger. The movable block is slidably connected to the inner cavity of the movable seat.

[0008] Optionally, a first motor is fixedly installed on one end of the side wall of the cooling box. The drive output end of the first motor is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on one end of a rotating rod located on one side. Two adjacent sets of rotating rods are connected by a transmission toothed belt.

[0009] By adopting the above technical solution, multiple sets of rotating rods can be driven to rotate.

[0010] Optionally, water pumps are fixedly installed on both sides inside the cooling box, and the outlet ends of the two sets of water pumps are located at the top of the cooling box.

[0011] By adopting the above technical solution, the coolant can be cooled down.

[0012] Optionally, a second motor is fixedly installed on the side wall of the movable seat. The drive output end of the second motor is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on one side of the screw.

[0013] By adopting the above technical solution, the screw can be driven to rotate.

[0014] Optionally, limit holes are provided on both sides of the mounting base, and limit rods are movably installed in the two sets of limit holes. The bottom of the two sets of limit rods is fixedly installed with the cover.

[0015] By adopting the above technical solution, the shield can be limited.

[0016] Optionally, electric slide rails are fixedly installed on both sides of the cooling box, and two sets of equidistantly distributed movable brackets are slidably installed on both sides of the two sets of electric slide rails. The top of the four sets of movable brackets is fixedly installed on the bottom side of the movable seat.

[0017] By adopting the above technical solution, it is convenient to adjust the movable seats at the top of the four sets of movable supports.

[0018] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0019] The technical solution of this application moves the movable seat to the top of the plunger. When the electric push rod is opened, it pushes the cover down, so that the arc-shaped heating blocks inside the cover are distributed on one side of the top of the plunger. At the same time, the first motor and the second motor are driven, and the two adjacent sets of rotating rods are connected by transmission toothed belts. This not only drives the multiple sets of rotating rods to rotate, so that the plunger slowly rotates on the top of the multiple sets of rotating rods, but also the rotating screw can drive the movable block to one side. When the arc-shaped heating blocks continuously heat the outer surface of the plunger, the heated plunger will be quickly introduced into the coolant inside the cooling box, so that the plunger can efficiently complete the quenching.

[0020] Water pumps are fixedly installed on both sides inside the cooling box, with the outlets of the two sets of water pumps located at the top of the cooling box. When the device is continuously quenching the plunger, the water pumps inside the cooling box can be turned on simultaneously, so that the two sets of water pumps continuously draw the coolant inside the cooling box and discharge it from the outlets located at the top of the two sets of water pumps. This ensures that the temperature of the coolant inside the cooling box is kept uniform and avoids the coolant at the top of the cooling box from being in contact with the high-level plunger for a long time, causing the temperature to rise continuously and greatly reducing the plunger quenching efficiency. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a surface hardening device for plunger processing according to the present invention;

[0023] Figure 2 This is a schematic diagram of the movable seat structure of a surface hardening device for plunger processing according to this utility model;

[0024] Figure 3 This is a schematic diagram of the arc-shaped heating block structure of a surface hardening device for plunger processing according to the present invention;

[0025] Figure 4 This is a schematic diagram of the multi-group rotating rod distribution structure of a surface hardening device for plunger processing according to the present invention.

[0026] In the diagram: 1. Cooling box; 11. Rotating rod; 12. Convex roller; 13. First motor; 14. Transmission toothed belt; 15. Water pump; 2. Moving seat; 21. Screw; 22. Moving block; 23. Mounting seat; 24. Electric push rod; 25. Back cover; 26. Arc-shaped heating block; 3. Second motor; 31. Limiting rod; 32. Electric slide rail; 33. Moving bracket. Detailed Implementation

[0027] Please see Figure 1-4 This utility model provides a technical solution: a surface hardening device for plunger processing, including a cooling box 1, with multiple sets of equidistantly distributed rotating rods 11 rotatably installed on both sides inside the cooling box 1, the multiple sets of rotating rods 11 being distributed in an arc shape on the top of the cooling box 1, and multiple sets of equidistantly distributed convex rollers 12 fixedly installed on each of the multiple sets of rotating rods 11, the cooling box 1 containing coolant, and a movable seat 2 installed on one side of the top of the cooling box 1, the movable seat 2 containing a heating adjustment mechanism.

[0028] The heating adjustment mechanism includes a screw 21 rotatably mounted on both sides inside the movable seat 2, a movable block 22 threadedly mounted on one end of the screw 21, a mounting base 23 fixedly mounted on the bottom of the movable block 22, an electric push rod 24 fixedly mounted in the middle of the mounting base 23, a cover 25 fixedly mounted on the other end of the electric push rod 24, and an arc-shaped heating block 26 fixedly mounted inside the cover 25. The top of the multiple sets of rotating rods 11 is equipped with a plunger, the arc-shaped heating block 26 corresponds to the outer wall of the plunger, and the movable block 22 is slidably connected to the inner cavity of the movable seat 2.

[0029] By moving the movable seat 2 to the top of the plunger, and opening the electric push rod 24 to push the cover 25 down, the arc-shaped heating blocks 26 inside the cover 25 are distributed on one side of the top of the plunger. At the same time, the first motor 13 and the second motor 3 are driven, and the two adjacent sets of rotating rods 11 are connected by the transmission toothed belt 14. This not only drives the multiple sets of rotating rods 11 to rotate, making the plunger slowly rotate on the top of the multiple sets of rotating rods 11, but also the rotating screw 21 can drive the movable block 22 to move to one side. When the arc-shaped heating blocks 26 continuously heat the outer surface of the plunger, the heated plunger will be quickly introduced into the coolant inside the cooling box 1, so that the plunger can efficiently complete the quenching.

[0030] In this technical solution, water pumps 15 are fixedly installed on both sides inside the cooling tank 1. The outlet of the two sets of water pumps 15 is located at the top of the cooling tank 1, which can cool the coolant.

[0031] While the device is continuously quenching the plunger, the water pumps 15 inside the cooling tank 1 can be turned on simultaneously, so that the two sets of water pumps 15 continuously draw the coolant inside the cooling tank 1 and discharge it from the outlet at the top of the two sets of water pumps 15. This ensures that the temperature of the coolant inside the cooling tank 1 is kept uniform and avoids the coolant at the top of the cooling tank 1 from being in contact with the high-level plunger for a long time and having its temperature rise continuously, which would greatly reduce the plunger quenching efficiency.

[0032] In this technical solution, limit holes are provided on both sides of the mounting base 23, and limit rods 31 are movably installed in the two sets of limit holes. The bottom of the two sets of limit rods 31 are fixedly installed with the cover 25, which can limit the cover 25.

[0033] When the operator drives the electric push rod 24 to move the cover 25 up and down, the limit rod 31 in the limit hole can limit and support the cover 25, ensuring that the cover 25 moves up and down vertically.

[0034] In this technical solution, electric slide rails 32 are fixedly installed on both sides of the cooling box 1. Two sets of equidistantly distributed movable supports 33 are slidably installed on both sides of the two sets of electric slide rails 32. The top of the four sets of movable supports 33 is fixedly installed on the bottom side of the movable seat 2, which facilitates the adjustment of the movable seat 2 on the top of the four sets of movable supports 33.

[0035] When the operator places the plunger inside the top side of the cooling box 1, he can first drive the two sets of electric slide rails 32 to move the support 33, move the moving seat 2 away from the top of the cooling box 1, and wait for the plunger to be hoisted inside the cooling box 1. Then, he can drive the two sets of electric slide rails 32 to move the support 33, move the moving seat 2 to the top of the plunger.

[0036] In this technical solution, a second motor 3 is fixedly installed on the side wall of the movable seat 2. The drive output end of the second motor 3 is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on one side of the screw 21, which can drive the screw 21 to rotate.

[0037] After the second motor 3 drives the screw 21 to rotate, the rotating screw 21 can drive the moving block 22 to move to one side, so that the arc-shaped heating block 26 continuously heats the outer surface of the plunger.

[0038] In this technical solution, a first motor 13 is fixedly installed on one end of the side wall of the cooling box 1. The drive output end of the first motor 13 is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on one end of the rotating rod 11 located on one side. Two adjacent sets of rotating rods 11 are connected by a transmission toothed belt 14, which can drive multiple sets of rotating rods 11 to rotate.

[0039] After the first motor 13 drives the rotating rod 11 on one side to rotate, the two adjacent sets of rotating rods 11 are connected by the transmission toothed belt 14, which can drive multiple sets of rotating rods 11 to rotate, and make the plunger slowly rotate on the top of multiple sets of rotating rods 11.

[0040] In use, the plunger is first hoisted into the cooling tank 1 using a crane and supported on top of multiple sets of rotating rods 11, so that the bottom of the plunger is submerged in the coolant. The operator moves the bracket 33 on the two sets of electric slide rails 32 to move the moving seat 2 to the top of the plunger. Then, the electric push rod 24 is opened to push the cover 25 down, so that the arc-shaped heating blocks 26 inside the cover 25 are distributed on one side of the top of the plunger. At the same time, the first motor 13 and the second motor 3 are driven, and the two adjacent sets of rotating rods 11 are connected by the transmission belt 14. This not only drives the multiple sets of rotating rods 11 to rotate, making the plunger slowly rotate on top of the multiple sets of rotating rods 11, but also the rotating screw 21 can drive the moving block 22 to one side, so that the arc-shaped heating blocks 26 are distributed on one side of the top of the plunger. 6. When the outer surface of the plunger is continuously heated, the heated plunger will be quickly introduced into the coolant inside the cooling box 1, so that the plunger can be quenched efficiently. At the same time, water pumps 15 are fixedly installed on both sides inside the cooling box 1, and the outlet of the two sets of water pumps 15 is located at the top of the cooling box 1. When the device is continuously quenching the plunger, the water pumps 15 inside the cooling box 1 can be turned on simultaneously, so that the two sets of water pumps 15 continuously draw the coolant inside the cooling box 1 and discharge it from the outlet at the top of the two sets of water pumps 15. This ensures that the temperature of the coolant inside the cooling box 1 is kept uniform and avoids the coolant at the top of the cooling box 1 from being in contact with the high-level plunger for a long time and the temperature from continuously rising, which would greatly reduce the quenching efficiency of the plunger.

Claims

1. A surface quenching device for processing a plunger, comprising a cooling box (1), characterized in that: The rotatingly installed rotating rods (11) are distributed in equal intervals inside the cooling box (1), and a plurality of groups of convex rollers (12) are fixedly installed on the rotating rods (11) in equal intervals. The heating adjusting mechanism comprises the rotatingly installed screw rods (21) inside the moving seat (2), the moving blocks (22) threadedly installed on one end of the screw rods (21), the mounting seats (23) fixedly installed on the bottom of the moving blocks (22), the electric push rods (24) fixedly installed in the middle of the mounting seats (23), the abutting covers (25) fixedly installed on the other end of the electric push rods (24), and the arc-shaped heating blocks (26) fixedly installed inside the abutting covers (25).

2. A surface quenching device for processing a plunger as set forth in claim 1, characterized in that: The first motor (13) is fixedly installed on one end of the side wall of the cooling box (1), the driving output end of the first motor (13) is in transmission connection with a transmission shaft, and the other end of the transmission shaft is fixedly installed on one end of the rotating rod (11) on one side.

3. The surface quenching device for processing a plunger according to claim 1, characterized in that: The water pumps (15) are fixedly installed on both sides inside the cooling box (1), and the water outlets of the two groups of water pumps (15) are located at the top end of the cooling box (1).

4. The surface quenching device for processing a plunger according to claim 1, wherein: The second motor (3) is fixedly installed on the side wall of the moving seat (2), the driving output end of the second motor (3) is in transmission connection with a transmission shaft, and the other end of the transmission shaft is fixedly installed on one side of the screw rod (21).

5. The apparatus of claim 1 wherein: The limiting rods (31) are movably installed in the limiting holes on both sides of the mounting seat (23).

6. The apparatus of claim 1 wherein: The electric sliding rails (32) are fixedly installed on both sides of the cooling box (1), and the two groups of moving supports (33) are slidably installed on both sides of the two groups of electric sliding rails (32) in equal intervals, and the four groups of moving supports (33) are fixedly installed on the bottom side of the moving seat (2).

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