Solid drill rod heat treatment quenching device

Abstract

The utility model relates to the technical field of drill rod processing, in particular to a heat treatment quenching device for a solid drill rod, which adopts the combination of spraying rapid cooling quenching and soaking slow cooling, so that the time of occupying a supporting structure by the drill rod is shortened, and the quenching rhythm and the quenching efficiency are improved. Comprising a quenching box, a liquid feeding pipeline and a spraying pipe, the quenching device further comprises two wheel carriers, a plurality of carrier rollers, two steering engines and a rod feeding assembly, the two wheel carriers are rotationally installed on the inner wall of a quenching cavity of the quenching box and oppositely arranged on the two sides of an inlet of the quenching box respectively, the carrier rollers are rotationally installed on the two wheel carriers, the steering engines are installed on the inner wall of the quenching cavity of the quenching box, and the rod feeding assembly is arranged on the two sides of the inlet of the quenching box. The output ends of the two steering engines are in transmission connection with the two wheel carriers correspondingly, and the rod feeding assembly is installed on the quenching box and conveys a drill rod outside the quenching box to the position between the two wheel carriers through an inlet of the quenching box.

Description

Technical Field

[0001] The utility model relates to the technical field of drill pipe processing, in particular to a heat treatment quenching device for solid drill pipes. Background Technique

[0002] After the drill pipe is processed and formed, heat treatment quenching is required. The Chinese utility model patent with the publication number CN213866312U in the prior art proposes a drill pipe heat treatment quenching device. When the device conducts heat treatment on the drill pipe, the quenching medium in the liquid storage tank is transported into the main liquid pipe through the first infusion pipe, and is sprayed onto the drill pipe in the box body through the liquid distribution pipe and the nozzle, so as to achieve the purpose of heat treatment of the drill pipe. The Chinese utility model patent with the publication number CN213866312U in the prior art proposes a drill pipe heat treatment quenching device. An external spray water tank and an internal spray water tank are arranged beside the quenching machine tool. The external spray water tank can directly replenish water to the water storage tank during the quenching process to ensure the water volume and pressure of the water storage tank of the quenching machine tool; the internal spray water tank sprays water into the inner hole of the workpiece, which not only solves the problems of long internal spray distance and large resistance, but also ensures sufficient water volume or pressure of the internal spray, and avoids the phenomenon that the joints or thickened ends of non-excavation drill pipes, oil drill pipes, etc. are not quenched through.

[0003] However, the above-mentioned existing heat treatment quenching equipment only quenches and cools the drill pipe by spraying, and takes it out of the box after cooling to a sufficiently low temperature. However, the spraying method has a very obvious cooling effect in the early quenching stage of the drill pipe quenching, and the cooling effect is not obvious enough in the cooling stage from medium-high temperature to medium-low temperature after the drill pipe is quenched, resulting in a long cooling time after the overall quenching, and the drill pipe occupies the support frame for a long time, which is not conducive to improving the quenching rhythm and quenching efficiency. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a heat treatment quenching device for solid drill pipes, which combines spraying for rapid cooling quenching and soaking for slow cooling, reduces the time for the drill pipe to occupy the support structure, and improves the quenching rhythm and quenching efficiency.

[0005] The utility model discloses a solid drill pipe heat treatment quenching device, comprising a quenching box, a liquid feeding pipeline and a spray pipe, wherein a quenching chamber is arranged inside the quenching box, an inlet connected to the quenching chamber is arranged on the front side wall of the quenching box, an input end of the liquid feeding pipeline is connected to the bottom of the quenching chamber of the quenching box, an output end of the liquid feeding pipeline is connected to the input end of the spray pipe, the spray pipe is located at the top of the quenching chamber of the quenching box, and a plurality of spray heads are arranged on the spray pipe; the utility model also comprises two wheel frames, a plurality of rollers, two steering gears and a feeding rod assembly, the two wheel frames are rotatably mounted on the inner wall of the quenching chamber of the quenching box, and the two wheel frames are rotatably mounted on the inner wall of the quenching chamber of the quenching box. The wheel frames are respectively arranged on both sides of the inlet of the quenching box, and multiple rollers are rotatably installed on the two wheel frames. The two steering gears are installed on the inner wall of the quenching chamber of the quenching box. The output ends of the two steering gears are respectively connected to the two wheel frames in a transmission manner. The rod delivery assembly is installed on the quenching box, and the rod delivery assembly delivers the drill rods outside the quenching box to between the two wheel frames through the inlet of the quenching box; initially, the axes of the multiple rollers are all in a downward vertical state. When working, the multiple high-temperature drill rods are placed on the rod delivery assembly, and the rod delivery assembly delivers the multiple drill rods to between the two wheel frames through the inlet of the quenching box. The two steering gears drive the two wheel frames to flip respectively, so that the two wheel frames drive the axes of the multiple rollers to rotate to an inward horizontal state, so that the multiple rollers roll and lift up the two ends of the multiple drill rods respectively, so that the multiple drill rods are separated from the rod delivery assembly, and the rod delivery assembly exits the quenching box from the inlet, and the new multiple high-temperature drill rods are placed on the rod delivery assembly. The liquid delivery pipeline runs to extract the quenching liquid from the lower part of the quenching chamber of the quenching box and spray it to the multiple drill rods through the multiple nozzles of the spray pipe, so that the quenching liquid sprays the multiple drill rods to cool down and quench. When the multiple drill rods are quenched and cooled to a certain temperature Afterwards, the two steering gears respectively drive the two wheel frames to flip in the opposite direction, so that the two wheel frames drive the axes of the multiple rollers to rotate to a downward vertical state, so that the multiple drill rods slide from the multiple rollers into the quenching liquid at the bottom of the quenching chamber of the quenching box, so that the multiple drill rods are immersed in the quenching liquid for cooling. At this time, the rod sending assembly sends the new multiple drill rods into the quenching box for quenching heat treatment again. Compared with the prior art which combines spraying rapid cooling quenching with immersion slow cooling, the time that the drill rods occupy the supporting structure is reduced, the overall quenching time is reduced, and the quenching rhythm and quenching efficiency are improved.

[0006] Preferably, it also includes a grid plate and a discharge part, the lower part of the quenching box is provided with a discharge part protruding outward, the upper end surface of the discharge part is provided with an outlet, the grid plate is obliquely installed in the lower part of the quenching chamber of the quenching box and the discharge part, and the low point of the grid plate is located in the discharge part; when multiple drill rods fall into the quenching liquid in the lower part of the quenching chamber of the quenching box, the multiple drill rods are caught by the grid plate and roll or slide toward the discharge part, and when the multiple drill rods are immersed and cooled to a sufficiently low temperature, the multiple drill rods are fished out through the outlet of the discharge part, thereby improving the discharge efficiency of the multiple drill rods.

[0007] Preferably, the rod feeding assembly includes a slide rail frame, a support plate, a motor, a driving wheel and a driven plate. The slide rail frame is horizontally installed outside the inlet of the quenching tank. The support plate is slidably installed on the slide rail frame. The support plate is located between two wheel frames. A plurality of V-shaped support grooves are evenly arranged on the upper end surface of the support plate. The motor is installed on the slide rail frame. The output shaft of the motor is concentrically installed with the driving wheel. The driven plate is installed on the support plate and is in transmission connection with the driving wheel. The driving wheel and the driven plate can be a gear and a rack, or a friction wheel and a friction plate, etc. A plurality of high-temperature drill pipes are respectively placed in a plurality of V-shaped support grooves of the support plate. The motor drives the driving wheel to rotate. The driving wheel cooperates with the driven plate to drive the support plate to move along the slide rail frame. During feeding, the support plate enters the upper part of the quenching chamber through the inlet of the quenching tank, and makes a plurality of drill pipes respectively located between a plurality of supporting rollers. After the plurality of supporting rollers lift the plurality of drill pipes, the motor drives the driving wheel to reverse, so that the support plate exits the quenching tank along the slide rail frame from the inlet of the quenching tank, realizing automatic feeding, and having good practicability.

[0008] Preferably, it further includes a lifting rod and a salvage device. The fixed end of the lifting rod is installed outside the discharging part. The salvage device is installed on the top of the piston rod of the lifting rod. The salvage device is provided with a plurality of salvage claws, and the plurality of salvage claws are respectively aligned with the gaps of the grille plate. When the piston rod of the lifting rod contracts, it drives the salvage device to descend, so that the plurality of salvage claws of the salvage device respectively extend below the grille plate through the gaps of the grille plate. After a plurality of drill pipes roll or slide along the grille plate into the discharging part and cool down to a low enough temperature, the piston rod of the lifting rod extends to raise the salvage device, and the plurality of salvage claws of the salvage device rise to salvage the plurality of drill pipes from the discharging part, facilitating discharging and having good practicability.

[0009] Preferably, it further includes a filter plate and a slag discharge plate. The filter plate is installed at the lower part of the quenching chamber of the quenching tank. The filter plate filters the quenching liquid entering the liquid delivery pipeline. A slag discharge port is arranged on the side wall of the quenching tank. The slag discharge port is located on the side of the filter plate away from the liquid delivery pipeline. The slag discharge plate is detachably installed on the slag discharge port of the quenching tank. When a plurality of drill pipes are quenched, oxide layers will be generated on their surfaces, and these oxide layers will fall off into the quenching liquid. The filter plate filters and intercepts the fallen oxide layers to prevent clogging of the liquid delivery pipeline and the spray pipe. After working for a period of time, the quenching liquid at the lower part of the quenching chamber of the quenching tank is discharged through the liquid delivery pipeline, and the slag discharge plate is opened to clean out the oxide layers through the slag discharge port, improving the reliability of the equipment.

[0010] Preferably, it further includes a cooling tank and a cooling pipe. A cooling tank is arranged in the middle of the liquid delivery pipeline. A cooling chamber is arranged inside the cooling tank, and a cooling pipe is arranged in the cooling chamber of the cooling tank. When the quenching liquid flows in the liquid delivery pipeline, it passes through the cooling chamber of the cooling tank. The low-temperature cooling liquid cools the quenching liquid in the cooling tank through the cooling pipe, so that a sufficient temperature difference is maintained between the quenching liquid and a plurality of drill pipes, improving the stability of the quenching quality.

[0011] Preferably, it further includes a plurality of fins, and a plurality of fins are arranged on the outer wall of the cooling box; the heat dissipation effect of the cooling box is improved by arranging the plurality of fins.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: by combining spray quenching with rapid cooling and soaking quenching with slow cooling, the time for the drill pipe to occupy the support structure is reduced, the overall quenching time is reduced, and the quenching rhythm and quenching efficiency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a front sectional structural diagram of the present utility model;

[0015] Figure 3 is an axonometric partial sectional structural diagram of the present utility model;

[0016] Figure 4 is a schematic structural diagram of structures such as a wheel frame, a roller, and a steering gear;

[0017] Figure 5 is a schematic structural diagram of structures such as a rod feeding assembly;

[0018] Figure 6 is a schematic structural diagram of structures such as a lifting rod and a fishing tool.

[0019] Reference numerals in the drawings: 1, quenching box; 2, liquid supply pipeline; 3, spray pipe; 4, wheel frame; 5, roller; 6, steering gear; 7, grid plate; 8, discharging part; 9, slide rail frame; 10, support plate; 11, motor; 12, driving wheel; 13, driven plate; 14, lifting rod; 15, fishing tool; 16, filter plate; 17, slag discharging plate; 18, cooling box; 19, cooling pipe; 20, fin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present utility model is thorough and complete.

[0021] Embodiment 1

[0022] As Figures 1 to 5As shown, a solid drill pipe heat treatment quenching device comprises a quenching box 1, a liquid feeding pipeline 2 and a spray pipe 3. A quenching chamber is arranged inside the quenching box 1, and an inlet connected to the quenching chamber is arranged on the front side wall of the quenching box 1. The input end of the liquid feeding pipeline 2 is connected to the bottom of the quenching chamber of the quenching box 1, and the output end of the liquid feeding pipeline 2 is connected to the input end of the spray pipe 3. The spray pipe 3 is located at the top of the quenching chamber of the quenching box 1, and the spray pipe 3 is provided with a plurality of nozzles; it also comprises two wheel frames 4, a plurality of rollers 5, two steering gears 6 and a feeding rod assembly. The two wheel frames 4 are rotatably mounted on the inner wall of the quenching chamber of the quenching box 1, and the two wheel frames 4 are respectively arranged on both sides of the inlet of the quenching box 1. A plurality of rollers 5 are rotatably mounted on the two wheel frames 4, and the two steering gears 6 are installed on the quenching chamber. On the inner wall of the quenching chamber of the fire box 1, the output ends of the two steering gears 6 are respectively connected to the two wheel frames 4 in a transmission manner, and the rod feeding assembly is installed on the quenching box 1. The rod feeding assembly transports the drill rod outside the quenching box 1 to between the two wheel frames 4 through the inlet of the quenching box 1; the rod feeding assembly includes a slide rail frame 9, a support plate 10, a motor 11, a driving wheel 12 and a driven plate 13. The slide rail frame 9 is horizontally installed on the outer side of the inlet of the quenching box 1, and the support plate 10 is slidably installed on the slide rail frame 9. The support plate 10 is located between the two wheel frames 4. A plurality of V-shaped brackets are evenly arranged on the upper end surface of the support plate 10. The motor 11 is installed on the slide rail frame 9, and the output shaft of the motor 11 is concentrically installed with the driving wheel 12. The driven plate 13 is installed on the support plate 10, and the driven plate 13 is connected to the driving wheel 12 in a transmission manner.

[0023] Initially, the axes of multiple idlers 5 are all vertically downward. During operation, multiple high-temperature drill pipes are placed in multiple V-shaped troughs of the support plate 10. The motor 11 drives the driving wheel 12 to rotate. The driving wheel 12 cooperates with the driven plate 13 to drive the support plate 10 to move along the slide rail frame 9. The support plate 10 conveys multiple drill pipes through the inlet of the quenching tank 1 between the two wheel frames 4. Two steering gears 6 respectively drive the two wheel frames 4 to turn over, so that the axes of the multiple idlers 5 driven by the two wheel frames 4 rotate to the inward horizontal state, enabling the multiple idlers 5 to respectively roll and lift the two ends of the multiple drill pipes, causing the multiple drill pipes to separate from the support plate 10. The motor 11 drives the driving wheel 12 to reverse, causing the support plate 10 to withdraw from the inlet of the quenching tank 1. New multiple high-temperature drill pipes are placed in multiple V-shaped troughs of the support plate 10. The liquid supply pipeline 2 operates to pump out the quenching liquid at the lower part of the quenching chamber of the quenching tank 1 and spray it onto the multiple drill pipes through multiple nozzles of the spray pipe 3, so that the quenching liquid sprays and cools the multiple drill pipes for quenching. After the multiple drill pipes are quenched and cooled to a certain temperature, two steering gears 6 respectively drive the two wheel frames 4 to turn over in the reverse direction, so that the axes of the multiple idlers 5 driven by the two wheel frames 4 rotate to the vertically downward state, causing the multiple drill pipes to slide from the multiple idlers 5 into the quenching liquid at the lower part of the quenching chamber of the quenching tank 1, enabling the multiple drill pipes to be soaked and cooled in the quenching liquid. At this time, the support plate 10 feeds the new multiple drill pipes into the quenching tank 1 for quenching heat treatment again. Compared with the prior art that combines spray rapid cooling quenching and soaking slow cooling, the time for the drill pipes to occupy the support structure is reduced, the overall quenching time is reduced, and the quenching rhythm and quenching efficiency are improved. The driving wheel 12 and the driven plate 13 can be a gear and a rack, or a friction wheel and a friction plate, etc.

[0024] Embodiment 2

[0025] As Figures 1 to 3 and Figure 6 shown, on the basis of Embodiment 1, it further includes a grille plate 7 and a discharging part 8. The lower part of the quenching tank 1 is provided with a discharging part 8 protruding outward. The upper end surface of the discharging part 8 is provided with an outlet. The grille plate 7 is inclined and installed in the lower part of the quenching chamber of the quenching tank 1 and the discharging part 8, and the low point of the grille plate 7 is located in the discharging part 8; it further includes a lifting rod 14 and a salvage device 15. The fixed end of the lifting rod 14 is installed outside the discharging part 8, and the salvage device 15 is installed on the top of the piston rod of the lifting rod 14. The salvage device 15 is provided with multiple salvage claws, and the multiple salvage claws are respectively aligned with the gaps of the grille plate 7; it further includes a filter plate 16 and a slag discharging plate 17. The filter plate 16 is installed in the lower part of the quenching chamber of the quenching tank 1. The filter plate 16 filters the quenching liquid entering the liquid supply pipeline 2. A slag discharging port is provided on the side wall of the quenching tank 1, and the slag discharging port is located on the side of the filter plate 16 away from the liquid supply pipeline 2. The slag discharging plate 17 is detachably installed on the slag discharging port of the quenching tank 1.

[0026] When the piston rod of the lifting rod 14 contracts, it drives the fishing device 15 to descend, so that multiple fishing claws of the fishing device 15 respectively extend downward through the gaps of the grille plate 7. When multiple drill pipes fall into the quenching liquid in the lower part of the quenching chamber of the quenching tank 1, the multiple drill pipes are caught by the grille plate 7 and roll or slide towards the discharge part 8. When the multiple drill pipes are soaked and cooled to a sufficiently low temperature, the piston rod of the lifting rod 14 extends to raise the fishing device 15, and the multiple fishing claws of the fishing device 15 rise to fish out the multiple drill pipes from the discharge part 8. When the multiple drill pipes are quenched, an oxide layer will be generated on their surfaces, and these oxide layers will fall off into the quenching liquid. The filter plate 16 filters and intercepts the fallen oxide layers to prevent clogging of the liquid supply pipeline 2 and the spray pipe 3. After working for a period of time, the quenching liquid in the lower part of the quenching chamber of the quenching tank 1 is discharged through the liquid supply pipeline 2, the slag discharge plate 17 is opened, and the oxide layers are cleaned out through the slag discharge port, improving the reliability of the equipment.

[0027] Embodiment 3

[0028] As Figures 1 to 3 shown, on the basis of Embodiment 1, it further includes a cooling tank 18 and a cooling pipe 19. A cooling tank 18 is arranged in the middle of the liquid supply pipeline 2. A cooling chamber is arranged inside the cooling tank 18, and a cooling pipe 19 is arranged in the cooling chamber of the cooling tank 18; it further includes multiple fins 20, and multiple fins 20 are arranged on the outer wall of the cooling tank 18.

[0029] When the quenching liquid flows in the liquid supply pipeline 2, it passes through the cooling chamber of the cooling tank 18. The low-temperature cooling liquid cools the quenching liquid in the cooling tank 18 through the cooling pipe 19, so that a sufficient temperature difference is maintained between the quenching liquid and the multiple drill pipes. By arranging multiple fins 20, the heat dissipation effect of the cooling tank 18 is improved, and the stability of the quenching quality is improved.

[0030] As Figures 1 to 6As shown in the figure, a heat treatment quenching device for a solid drill pipe of the present utility model, when working, first places a plurality of high-temperature drill pipes on the V-shaped support grooves of the support plate 10. The motor 11 drives the driving wheel 12 to rotate, and the driving wheel 12 cooperates with the driven plate 13 to drive the support plate 10 to move along the slide rail frame 9. The support plate 10 conveys a plurality of drill pipes through the inlet of the quenching tank 1 between the two wheel frames 4. Then, two steering gears 6 respectively drive the two wheel frames 4 to flip, so that the axes of the plurality of rollers 5 driven by the two wheel frames 4 rotate to the inward horizontal state, so that the plurality of rollers 5 respectively roll up the two ends of the plurality of drill pipes, so that the plurality of drill pipes are separated from the rod feeding assembly. The support plate 10 exits the quenching tank 1 from the inlet, places a new plurality of high-temperature drill pipes on the V-shaped support grooves of the support plate 10, and then the liquid supply pipeline 2 operates to pump out the quenching liquid at the lower part of the quenching chamber of the quenching tank 1, cools it through the cooling tank 18 and the cooling pipe 19, and sprays it onto the plurality of drill pipes through the nozzles of the spray pipe 3, so that the quenching liquid sprays and cools the plurality of drill pipes for quenching. After the plurality of drill pipes are quenched and cooled to a certain temperature, the two steering gears 6 respectively drive the two wheel frames 4 to flip in the reverse direction, so that the axes of the plurality of rollers 5 driven by the two wheel frames 4 rotate to the downward vertical state, so that the plurality of drill pipes slide from the plurality of rollers 5 into the quenching liquid at the lower part of the quenching chamber of the quenching tank 1. The plurality of drill pipes are caught by the grid plate 7 and roll or slide towards the discharging part 8, so that the plurality of drill pipes are soaked and cooled in the quenching liquid. At this time, the rod feeding assembly sends the new plurality of drill pipes into the quenching tank 1 for quenching heat treatment again. Finally, when the plurality of drill pipes are soaked and cooled to a sufficiently low temperature, the piston rod of the lifting rod 14 extends to raise the fishing device 15, and the plurality of fishing claws of the fishing device 15 rise to fish out the plurality of drill pipes from the discharging part 8.

[0031] The main functions achieved by the present utility model are as follows:

[0032] 1. By combining spray rapid cooling quenching with immersion slow cooling, the time for the drill pipe to occupy the support structure is reduced, and the quenching rhythm and quenching efficiency are improved;

[0033] 2. It can automatically fish out the drill pipes for efficient discharging;

[0034] 3. It can automatically and efficiently feed materials.

[0035] A quenching device for heat treatment of a solid drill pipe according to the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; the quenching tank 1, liquid supply pipeline 2, spray pipe 3, idler roller 5, steering gear 6, grille plate 7, slide rail frame 9, support plate 10, motor 11, driving wheel 12, driven plate 13, lifting rod 14, filter plate 16, cooling tank 18, cooling pipe 19, and fin 20 of the quenching device for heat treatment of a solid drill pipe according to the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached user manual, without the need for creative labor from those skilled in the art.

[0036] All technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A heat treatment quenching device for a solid drill pipe, comprising a quenching tank (1), a liquid supply pipeline (2) and a spray pipe (3). A quenching chamber is arranged inside the quenching tank (1). An inlet communicating with the quenching chamber is arranged on the front side wall of the quenching tank (1). The input end of the liquid supply pipeline (2) is connected to the bottom of the quenching chamber of the quenching tank (1), and the output end of the liquid supply pipeline (2) is connected to the input end of the spray pipe (3). The spray pipe (3) is located at the top of the quenching chamber of the quenching tank (1), and the spray pipe (3) is provided with a plurality of nozzles; characterized in that, The invention also comprises two wheel frames (4), a plurality of rollers (5), two steering gears (6) and a rod delivery assembly. The two wheel frames (4) are rotatably mounted on the inner wall of the quenching chamber of the quenching box (1). The two wheel frames (4) are respectively arranged on both sides of the inlet of the quenching box (1) in a relatively manner. The two wheel frames (4) are both rotatably mounted with a plurality of rollers (5). The two steering gears (6) are mounted on the inner wall of the quenching chamber of the quenching box (1). The output ends of the two steering gears (6) are respectively connected to the two wheel frames (4) in a transmission manner. The rod delivery assembly is mounted on the quenching box (1). The rod delivery assembly delivers the drill rod outside the quenching box (1) to between the two wheel frames (4) through the inlet of the quenching box (1).

2. The heat treatment quenching device for a solid drill pipe according to claim 1, wherein The quenching box (1) further comprises a grid plate (7) and a discharge portion (8). The lower part of the quenching box (1) is provided with a discharge portion (8) protruding outward, and the upper end surface of the discharge portion (8) is provided with an outlet. The grid plate (7) is obliquely installed in the lower part of the quenching chamber of the quenching box (1) and in the discharge portion (8), and the lowest point of the grid plate (7) is located in the discharge portion (8).

3. A heat treatment quenching device for a solid drill pipe according to claim 1, characterized in that, The feeding rod assembly comprises a slide rail frame (9), a support plate (10), a motor (11), a driving wheel (12) and a driven plate (13). The slide rail frame (9) is horizontally mounted on the outer side of the inlet of the quenching box (1). The support plate (10) is slidably mounted on the slide rail frame (9). The support plate (10) is located between two wheel frames (4). A plurality of V-shaped brackets are evenly arranged on the upper end surface of the support plate (10). The motor (11) is mounted on the slide rail frame (9). The output shaft of the motor (11) is coaxially mounted with the driving wheel (12). The driven plate (13) is mounted on the support plate (10). The driven plate (13) is transmission-connected with the driving wheel (12).

4. The heat treatment quenching device for a solid drill pipe according to claim 2, characterized in that, It also includes a lifting rod (14) and a salvage device (15), wherein the fixed end of the lifting rod (14) is mounted on the outside of the discharge portion (8), and the salvage device (15) is mounted on the top of the piston rod of the lifting rod (14). The salvage device (15) is provided with a plurality of salvage claws, and the plurality of salvage claws are respectively aligned with the gaps of the grid plate (7).

5. The heat treatment quenching device for a solid drill pipe according to claim 2, wherein, The invention also comprises a filter plate (16) and a slag discharge plate (17). The filter plate (16) is mounted at the lower part of the quenching chamber of the quenching box (1). The filter plate (16) filters the quenching liquid entering the liquid feeding pipeline (2). A slag discharge port is arranged on the side wall of the quenching box (1). The slag discharge port is located on the side of the filter plate (16) away from the liquid feeding pipeline (2). The slag discharge plate (17) is detachably mounted on the slag discharge port of the quenching box (1).

6. The heat treatment quenching device for a solid drill pipe according to claim 1, characterized in that, It also comprises a cooling box (18) and a cooling pipe (19); the cooling box (18) is arranged in the middle of the liquid delivery pipeline (2); a cooling chamber is arranged inside the cooling box (18); and the cooling pipe (19) is arranged in the cooling chamber of the cooling box (18).

7. The heat treatment quenching device for a solid drill pipe according to claim 6, wherein, It also includes a plurality of fins (20), and the plurality of fins (20) are arranged on the outer wall of the cooling box (18).

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