Heat treatment equipment for machining thin-wall welded steel pipe

Abstract

The utility model provides heat treatment equipment for processing a thin-wall welded steel pipe, which relates to the technical field of heat treatment equipment and comprises a machine body, conveying frames are respectively arranged at two ends of the machine body, a filtering device is arranged at one end, close to a water spraying disc, of the machine body, and the filtering device comprises two groove rods. A collecting box with a first filtering frame and a second filtering frame is installed at one end of the machine body, an inserting rod is fixedly connected to the top end of the collecting box, a metal filtering net is arranged on the outer surface of the first filtering frame, and a non-woven fabric filtering net is arranged on the outer surface of the second filtering frame. The cooling water sprayed by the water spraying disc is filtered by the metal filter screen of the first filter frame and the non-woven fabric filter screen of the second filter frame, and most of oxide skin and metal chipping impurities in the cooling water are removed, so that the cooling water does not affect the surface of a heat-treated steel pipe when being reused, the environmental protection property is improved when the heat treatment equipment is used, and the service life of the heat treatment equipment is prolonged. The use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment equipment technology, and in particular to heat treatment equipment for processing thin-walled welded steel pipes. Background Technology

[0002] Thin-walled welded steel pipe is a common type of pipe widely used in construction, machinery, chemical industry, decoration and other fields. In the processing of thin-walled welded steel pipe, heat treatment is a key process to improve its mechanical properties, eliminate welding stress and improve its microstructure.

[0003] When quenching thin-walled steel pipes, after quenching by high-frequency heating, cooling water needs to be used to rinse the pipe at the output position for cooling. The rinsed cooling water is usually recycled and reused by a pump. However, the cooling water may contain metal debris and oxide scale generated during quenching from the surface of the steel pipe. If impurities such as metal debris, oxide scale, and oil in the cooling water are not filtered, they will adhere to the surface of the steel pipe during the quenching process, resulting in uneven hardness of the quenched layer, pitting or cracks, and affecting the mechanical properties of the thin-walled steel pipe. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the cooling water may contain metal debris and oxide scale generated during quenching on the surface of the steel pipe. If the metal debris, oxide scale, oil and other impurities in the cooling water are not filtered, they will adhere to the surface of the steel pipe during the quenching process, resulting in uneven hardness of the quenched layer, pitting or cracks, and affecting the mechanical properties of the thin-walled steel pipe. Therefore, this invention proposes a heat treatment equipment for processing thin-walled welded steel pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heat treatment equipment for processing thin-walled welded steel pipes, comprising a machine body, conveyor frames respectively provided at both ends of the machine body, two sets of rotating rollers connected by chain and sprocket sets and a drive motor for driving the rotating rollers to rotate are provided on the outer surface of the conveyor frames, a water spray plate is fixedly connected to one end of the machine body, a plurality of water spray holes are opened on the outer surface of the water spray plate, a pump is provided at the top of the machine body, one end of the pump is connected to the top of the water spray plate through a pipe, and a filter device is provided at the end of the machine body near the water spray plate.

[0006] Preferably, the filtration device includes two grooved rods and a collection box. One end of the grooved rods is fixedly connected to one side of the machine body. Two insert rods are fixedly connected to the top of the collection box, and a drain pipe is fixedly connected to the bottom of the collection box. A first filter frame and a second filter frame are provided inside the collection box. A metal filter screen is provided on the outer surface of the first filter frame, and a non-woven fabric filter screen is provided on the outer surface of the second filter frame.

[0007] Furthermore, the inside of the collection box is provided with a positioning component that can fix the positions of the first filter frame and the second filter frame inside the collection box.

[0008] Furthermore, the positioning component includes several locking blocks and springs. Two rectangular grooves are respectively opened on both sides of the inner wall of the collection box. Two locking slots are opened on one side of the inner wall of the rectangular groove. The two locking slots are located on the upper and lower sides of the inner wall of the rectangular groove. The locking blocks are installed at the four corners of the outer surface of the first filter frame and the second filter frame by the springs. The locking blocks slide on the inner wall of the first filter frame and the second filter frame.

[0009] Furthermore, a T-shaped block is fixedly connected to the top of the card block, and several positioning grooves are respectively opened on the outer surfaces of the first filter frame and the second filter frame, and the T-shaped block slides on the inner wall of the positioning groove.

[0010] Furthermore, the inner walls of the first and second filter frames are respectively fixedly connected with several round rods, and the locking block slides on the outer surface of the round rods.

[0011] Furthermore, U-shaped rods are fixedly connected to the top sides of the first and second filter frames respectively.

[0012] Furthermore, two inclined guide plates are fixedly connected to the top of the collection box, with the two guide plates located on both sides of the top of the collection box.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In this invention, by setting up a filtration device and installing a collection box with a first filter frame and a second filter frame at one end of the machine body, the cooling water sprayed from the spray plate is filtered through the metal filter screen of the first filter frame and the non-woven fabric filter screen of the second filter frame, removing most of the oxide scale and metal debris impurities in the cooling water. This ensures that the cooling water will not affect the surface of the heat-treated steel pipe when reused, improving the environmental friendliness of the heat treatment equipment and reducing the operating cost. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the body of this utility model;

[0017] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the collection box of this utility model;

[0018] Figure 4 This utility model Figure 3 A magnified three-dimensional structural diagram of point A;

[0019] Figure 5 This is a three-dimensional structural diagram of the collection box of this utility model;

[0020] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the first filter frame of this utility model;

[0021] Figure 7 This utility model Figure 6 A magnified three-dimensional structural diagram of part B.

[0022] Legend: 1. Body; 2. Filter device; 3. Conveyor frame; 4. Pump; 5. Spray plate; 21. Groove rod; 22. Insert rod; 23. Collection box; 24. Drain pipe; 25. First filter frame; 26. Second filter frame; 27. Positioning component; 271. Rectangular groove; 272. Slot; 273. Spring; 274. Locking block; 275. Positioning groove; 276. T-block; 277. Round rod; 278. U-shaped rod; 28. Guide plate. Detailed Implementation

[0023] Example 1, as Figure 1-2 As shown, the heat treatment equipment for processing thin-walled welded steel pipes includes a machine body 1. Conveyor frames 3 are respectively installed at both ends of the machine body 1. Two sets of rotating rollers connected by chain and sprocket sets and a drive motor for rotating the rollers are installed on the outer surface of the conveyor frames 3. A water spray plate 5 is fixedly connected to one end of the machine body 1. Several water spray holes are opened on the outer surface of the water spray plate 5. A pump 4 is installed at the top of the machine body 1. One end of the pump 4 is connected to the top of the water spray plate 5 through a pipe. A filter device 2 is installed at the end of the machine body 1 near the water spray plate 5. The heat treatment equipment is used to process thin-walled welded steel pipes. When the pipe is quenched, one end of the pump 4 is connected to the cooling water pipe, and the steel pipe is placed on the rotating roller of the conveyor frame 3 at one end of the machine body 1. The drive motors on one side of the conveyor frame 3 at both ends of the machine body 1 are operated to control the rotation of the rotating roller, so that the rotating roller drives the steel pipe into the machine body 1. The steel pipe is quenched by energizing the high-frequency heating tube inside the machine body 1. When the steel pipe is output through the other end of the machine body 1, it passes through the inside of the spray pipe. The pump 4 is operated to send the cooling water to the spray plate 5, and the water is sprayed out through the spray holes on the outer surface of the spray plate 5 to cool the surface of the steel pipe.

[0024] Reference Figure 1-6As shown in this embodiment: the filter device 2 includes two grooved rods 21 and a collection box 23. One end of the grooved rods 21 is fixedly connected to one side of the machine body 1. Two insert rods 22 are fixedly connected to the top of the collection box 23, and a drain pipe 24 is fixedly connected to the bottom of the collection box 23. A first filter frame 25 and a second filter frame 26 are arranged inside the collection box 23. A metal filter screen is arranged on the outer surface of the first filter frame 25, and a non-woven fabric filter screen is arranged on the outer surface of the second filter frame 26. By setting the collection box 23, when using the heat treatment equipment, the two insert rods 22 at the top of the collection box 23 can be inserted into the two grooved rods 21 at one end of the machine body 1 to fix the collection box 23 below the water spray plate 5. Then, the pipe for collecting cooling water is connected to the drain pipe 24 at the bottom of the collection box 23. The cooling water sprayed from the water spray plate 5 will enter the collection box 23. Inside the collection box 23, the oxide scale and metal debris in the cooling water are filtered through the metal filter screen on the surface of the first filter frame 25. Then, the cooling water passes through the second filter frame 26, where the fine particulate impurities are filtered through the non-woven fabric filter screen on the surface of the second filter frame 26. The filtered cooling water is then discharged through the drain pipe 24. By setting up the filtration device 2 and installing the collection box 23 with the first filter frame 25 and the second filter frame 26 at one end of the machine body 1, the cooling water sprayed from the spray plate 5 is filtered through the metal filter screen of the first filter frame 25 and the non-woven fabric filter screen of the second filter frame 26, removing most of the oxide scale and metal debris impurities in the cooling water. This ensures that the cooling water will not affect the surface of the heat-treated steel pipe when reused, improving the environmental friendliness of the heat treatment equipment and reducing operating costs.

[0025] Reference Figure 2-7As shown in this embodiment: the collection box 23 is internally equipped with a positioning component 27 that can fix the positions of the first filter frame 25 and the second filter frame 26 inside the collection box 23. The positioning component 27 includes several locking blocks 274 and springs 273. Two rectangular grooves 271 are respectively opened on both sides of the inner wall of the collection box 23. Two locking slots 272 are opened on one side of the inner wall of the rectangular grooves 271. The two locking slots 272 are located on the upper and lower sides of the inner wall of the rectangular grooves 271. The locking blocks 274 are installed at the four corners of the outer surface of the first filter frame 25 and the second filter frame 26 by the springs 273. The locking blocks 274 slide on the inner wall of the first filter frame 25 and the second filter frame 26. When installing the first filter frame 25 and the second filter frame 26, first align the second filter frame 26 with the top of the collection box 23 and align each locking block 274 with the rectangular groove 271. Then push the locking blocks 274 at the four corners of the second filter frame 26 towards the second filter frame 26. The filter frame 26 is moved internally and the spring 273 is compressed. Then, the second filter frame 26 is inserted vertically downward into the collection box 23, so that the second filter frame 26 is located at the bottom of the inner wall of the rectangular groove 271. The locking block 274 is released, and the compressed spring 273 returns to its original state, pushing the locking block 274 outward to insert the locking block 274 into the slot 272, thus fixing the position of the second filter frame 26 inside the collection box 23. Then, the first filter frame 25 is aligned with the slot 272 at the top of the inner wall of the rectangular groove 271. The locking block 274 on the outer surface of the first filter frame 25 is pressed and the spring 273 is compressed. The first filter frame 25 is moved downward, and the locking blocks 274 at the four corners of the first filter frame 25 are inserted into the slot 272 at the top of the inner wall of the rectangular groove 271, thus fixing the first filter frame 25 at the top of the inner wall of the rectangular groove 271. The positions of the first filter frame 25 and the second filter frame 26 inside the collection box 23 are thus fixed and installed.

[0026] Reference Figure 2-7As shown in this embodiment: a T-shaped block 276 is fixedly connected to the top of the locking block 274. Several positioning grooves 275 are respectively opened on the outer surfaces of the first filter frame 25 and the second filter frame 26. The T-shaped block 276 slides on the inner wall of the positioning groove 275. When installing the first filter frame 25 and the second filter frame 26, the T-shaped block 276 at the top of the locking block 274 can be pinched to slide on the inner wall of the positioning groove 275, facilitating control of the movement of the locking block 274. When removing the first filter frame 25 and the second filter frame 26, the T-shaped block 276 is pushed to control the locking block 274 to compress the spring 273 and disengage it from the slot 272. Then, the first filter frame 25 or the second filter frame 26 can be pulled upwards. Several round rods 277 are fixedly connected to the inner walls of the first filter frame 25 and the second filter frame 26 respectively. The locking block 274 slides on the outer surface of the round rod 277. When the locking block 274 is pushed to move, the locking block 274 will slide on the outer surface of the round rod 277. The round rod 277 can further limit the angle between the locking block 274 and the first filter frame 25 or the second filter frame 26, so as to avoid the angle of the locking block 274 from deflecting. U-shaped rods 278 are fixedly connected to the top sides of the first filter frame 25 and the second filter frame 26 respectively. Holding the U-shaped rods 278 on the top sides of the first filter frame 25 and the second filter frame 26 can make it easier to lift the first filter frame 25 and the second filter frame 26 for assembly and disassembly.

[0027] Reference Figure 2-7 As shown in this embodiment: two inclined guide plates 28 are fixedly connected to the top of the collection box 23. The two guide plates 28 are located on both sides of the top of the collection box 23. By setting the guide plates 28, the cooling water near the top of the collection box 23 can be guided, making it easier for the cooling water to enter the interior of the collection box 23.

[0028] Working principle: Before using the equipment, align the top of the second filter frame 26 with the top of the collection box 23 and align each locking block 274 with the rectangular groove 271. Then, push the locking blocks 274 at the four corners of the second filter frame 26 inward to compress the spring 273. Next, insert the second filter frame 26 vertically downward into the collection box 23, so that the second filter frame 26 is located at the bottom of the inner wall of the rectangular groove 271. Release the locking blocks 274, and the compressed spring 273 returns to its original state, pushing the locking blocks 274 outward to insert them into the slot 272, thus fixing the position of the second filter frame 26 inside the collection box 23. Next, align the first filter frame 25 with the slot 272 at the top of the inner wall of the rectangular groove 271. Press the locking block 274 on the outer surface of the first filter frame 25 and compress the spring 273. Move the first filter frame 25 downwards and insert the locking blocks 274 at the four corners of the first filter frame 25 into the slot 272 at the top of the inner wall of the rectangular groove 271. Fix the first filter frame 25 at the top of the inner wall of the rectangular groove 271. Fix the positions of the first filter frame 25 and the second filter frame 26 inside the collection box 23. Then, insert the two insert rods 22 at the top of the collection box 23 into the two slot rods 21 at one end of the machine body 1 to fix the collection box 23 under the spray plate 5. To process the thin-walled welded steel pipe, connect the cooling water collection pipe to the drain pipe 24 at the bottom of the collection box 23. When using heat treatment equipment to quench the thin-walled welded steel pipe, connect one end of the pump 4 to the cooling water pipe, place the steel pipe on the rotating roller of the conveyor frame 3 at one end of the machine body 1, and operate the drive motors on one side of the conveyor frame 3 at both ends of the machine body 1 to control the rotation of the rotating rollers, so that the rotating rollers carry the steel pipe into the machine body 1. The high-frequency heating tube inside the machine body 1 is energized to quench the steel pipe. When the steel pipe is output through the other end of the machine body 1, it passes through the inside of the spray pipe. The pump 4 is operated to send the cooling water to the spray plate 5, and the water is sprayed out through the spray holes on the outer surface of the spray plate 5 to cool the surface of the steel pipe. The cooling water sprayed from the spray plate 5 enters the collection box 23. The metal filter on the surface of the first filter frame 25 filters out oxide scale and metal debris. Then, the cooling water passes through the second filter frame 26, where the non-woven fabric filter filters out fine particulate impurities. The filtered cooling water is then discharged through the drain pipe 24. Pushing the T-shaped block 276 controls the locking block 274 to compress the spring 273, disengaging it from the slot 272. Then, the first filter frame 25 or the second filter frame 26 can be pulled upwards to remove it for cleaning and replacement.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A heat treatment device for processing thin-walled welded steel pipes, comprising a machine body (1), characterized in that: The machine body (1) is provided with conveyor frames (3) at both ends. The outer surface of the conveyor frame (3) is provided with two sets of rotating rollers connected by chain and sprocket sets and a drive motor for driving the rotating rollers to rotate. One end of the machine body (1) is fixedly connected with a water spray plate (5). The outer surface of the water spray plate (5) is provided with several water spray holes. The top of the machine body (1) is provided with a pump (4). One end of the pump (4) is connected to the top of the water spray plate (5) through a pipe. The end of the machine body (1) near the water spray plate (5) is provided with a filter device (2).

2. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 1, characterized in that: The filter device (2) includes two groove rods (21) and a collection box (23). One end of the groove rod (21) is fixedly connected to one side of the body (1). Two insert rods (22) are fixedly connected to the top of the collection box (23). A drain pipe (24) is fixedly connected to the bottom of the collection box (23). A first filter frame (25) and a second filter frame (26) are provided inside the collection box (23). A metal filter screen is provided on the outer surface of the first filter frame (25), and a non-woven filter screen is provided on the outer surface of the second filter frame (26).

3. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 2, characterized in that: The collection box (23) is equipped with a positioning component (27) that can fix the positions of the first filter frame (25) and the second filter frame (26) inside the collection box (23).

4. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 3, characterized in that: The positioning component (27) includes several locking blocks (274) and springs (273). Two rectangular grooves (271) are respectively opened on both sides of the inner wall of the collection box (23). Two locking slots (272) are opened on one side of the inner wall of the rectangular groove (271). The two locking slots (272) are located on the upper and lower sides of the inner wall of the rectangular groove (271). The locking blocks (274) are installed at the four corners of the outer surface of the first filter frame (25) and the second filter frame (26) by the springs (273). The locking blocks (274) slide on the inner wall of the first filter frame (25) and the second filter frame (26).

5. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 4, characterized in that: The top of the card block (274) is fixedly connected to a T-shaped block (276). The outer surfaces of the first filter frame (25) and the second filter frame (26) are respectively provided with a number of positioning grooves (275). The T-shaped block (276) slides on the inner wall of the positioning groove (275).

6. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 5, characterized in that: The inner walls of the first filter frame (25) and the second filter frame (26) are respectively fixedly connected with a number of round rods (277), and the locking block (274) slides on the outer surface of the round rods (277).

7. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 6, characterized in that: The top sides of the first filter frame (25) and the second filter frame (26) are respectively fixedly connected with U-shaped rods (278).

8. The heat treatment equipment for processing thin-walled welded steel pipes according to claim 7, characterized in that: The top of the collection box (23) is fixedly connected to two inclined guide plates (28), which are located on both sides of the top of the collection box (23).

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