A device for heat treating cast steel parts

Abstract

The utility model discloses a cast steel heat treatment device, it belongs to the field of continuous heat treatment, including first pool and second pool, be equipped with quick cooling liquid in the first pool, be equipped with slow cooling liquid in the second pool, be equipped with conveying device in the first pool can convey cast steel in the first pool to the second pool in, be equipped with two groups of conveying device in the second pool can convey cast steel in the second pool and send out the second pool, conveying device includes the inclined conveying chain of several of equal interval arrangement, and equal interval is equipped with several outward extending support rod on the conveying chain, be equipped with on high pressure air -blowing subassembly on the first pool, can blow out high pressure air on the cast steel on the conveying chain in the first pool top, still be equipped with on high pressure air -blowing subassembly on the first pool along the upper, can blow out high pressure air below the cast steel on the conveying chain in the first pool. The above structure can clean up the cast steel surface moisture that takes out in quick cooling liquid on the basis of guaranteeing heat treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of continuous heat treatment, specifically to a heat treatment device for cast steel parts. Background Technology

[0002] The heat treatment process for cast steel parts includes two quenching processes. The purpose is to first quench in a fast coolant to transform austenite into martensite, and then quench in a slow coolant. Although this heat treatment process has been automated through conveying equipment, it can cause the fast coolant to mix with the slow coolant, which not only changes the composition of the slow coolant but also affects its temperature.

[0003] Although reducing the conveying speed of the conveying equipment can help to dry the surface of the cast steel parts as much as possible after they are removed from the rapid cooling liquid, this operation will affect the heat treatment efficiency.

[0004] In view of the problems existing in the prior art, this utility model designs and manufactures a heat treatment device for cast steel parts to overcome the above defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a heat treatment device for cast steel parts, which, while ensuring heat treatment efficiency, can clean the surface moisture of cast steel parts taken out of the rapid cooling liquid.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a heat treatment device for cast steel parts, comprising a first water tank and a second water tank, wherein the first water tank is provided with a rapid cooling liquid, the second water tank is provided with a slow cooling liquid, and the first water tank is provided with a conveying device capable of conveying the cast steel parts in the first water tank to the second water tank. The second water tank is equipped with two sets of conveying devices. The two sets of conveying devices are arranged sequentially in front of and behind each other along the conveying direction. The first set of conveying devices can convey the cast steel parts from the first water tank to the second set of conveying devices, and the second set of conveying devices can convey the cast steel parts from the second water tank out of the second water tank. The conveying device includes several inclined conveying chains arranged at equal intervals. Several outwardly extending support rods are provided at equal intervals on the conveying chains. The upper and lower ends of the conveying chains are respectively connected to a first sprocket and a second sprocket. The several conveying chains can convey the cast steel parts obliquely upward. The first sprocket, which drives the uppermost end of the conveyor chain in the first water tank, is exposed above the first water tank. An upper high-pressure air blowing assembly is provided above the first sprocket in the first water tank. The upper high-pressure air blowing assembly is installed on the upper edge of the first water tank and can blow high-pressure air above the cast steel parts on the conveyor chain in the first water tank. A lower high-pressure air blowing assembly is also provided on the upper edge of the first water tank and can blow high-pressure air below the cast steel parts on the conveyor chain in the first water tank.

[0007] Preferably, the high-pressure air blowing assembly includes an air blowing pipe, and an air blowing channel is provided on the side wall of the air blowing pipe. The air blowing channel can blow out high-pressure gas, and the high-pressure gas blown out by the air blowing channel is directed toward the first water tank.

[0008] Preferably, the high-pressure air blowing assembly includes several air blowing pipes, which are arranged between the conveyor chains adjacent to the first water tank. Each air blowing pipe has an air blowing channel, which can blow out high-pressure gas. The high-pressure gas blown out by the air blowing channel is perpendicular to the conveyor chain of the first water tank and in an upward direction.

[0009] Preferably, each of the upper blowing air pipes and each of the lower blowing air pipes is provided with an air pipe connector at its end, and the air pipe connector is connected to a high-pressure air source through a pipeline.

[0010] Preferably, the lower end of the conveyor chain is connected to the fixed base, the fixed base of the first water tank is located below the side away from the second water tank, and the two fixed bases of the second water tank are respectively located below the side close to the first water tank and in the middle of the second water tank; The fixed base is provided with an inclined mounting groove, which is consistent with the inclined conveying direction of the conveyor chain. A driven shaft is rotatably installed in the mounting groove, and a second sprocket is installed on the driven shaft. The conveyor chain is driven by the first sprocket and the second sprocket.

[0011] Preferably, the upper end of the conveyor chain is connected to a drive shaft via a first sprocket. The drive shaft of the first water tank is mounted on the upper edge of the first water tank near the second water tank via a bearing seat. The drive shaft on the front side of the second water tank is mounted on a support plate in the middle of the second water tank via a bearing seat. The drive shaft on the front side of the second water tank is mounted on the upper edge of the second water tank away from the first water tank via a bearing seat. One end of the drive shaft is connected to a drive reduction motor.

[0012] Preferably, the driven shaft is provided with rotation limiting components at both ends to prevent the driven shaft from disengaging from the mounting groove; The rotation limiting assembly includes two limiting blocks, one end of which is provided with a semi-circular opening groove, which can rotate with both ends of the driven shaft. The other ends of the two limiting blocks are connected by a fixing block, and the end of the fixing block away from the limiting block is rotatably connected to a lead screw; Fixed frames are provided on the upper edge of the side wall of the first water tank near the second water tank, on the support plate, and on the upper edge of the side wall of the second water tank away from the first water tank. An adjusting block with a threaded hole is fixed on the fixed frame. The direction of the threaded hole is consistent with the inclined conveying direction of each conveying device. The lead screw is screwed to the threaded hole. Rotating the lead screw can drive the limiting block to move along the direction of the mounting groove through the fixed block.

[0013] Preferably, the upper end face of the fixing block is provided with an upward-facing channel steel, and the setting direction of the channel steel is parallel to the lead screw; The conveyor chain can be mounted in the channel steel.

[0014] Preferably, a support block is provided at the bottom of the end of the channel steel away from the fixing block, and the bottom of the support block is provided with a mating hole; The end of the channel steel away from the fixed block is fitted onto the lead screw through a mating hole.

[0015] Preferably, the fixed base has a downward sloping surface along the conveying direction.

[0016] The advantages of this utility model are: 1. This utility model utilizes an inclined conveying device to transfer the casting from a first pool containing rapid cooling liquid to a second pool containing slow cooling liquid. During the conveying process, the cast steel parts first detach from the water surface of the first pool before falling into the second pool, thus achieving water control after detachment from the first pool. Then, high-pressure gas is blown out with the help of the upper and lower high-pressure blowing components to complete the cleaning of moisture from the surface of the cast steel parts.

[0017] 2. This utility model utilizes an inclined conveying device set in the first and second water tanks, which not only does not affect the quenching process of the cast steel parts, but also ensures the continuous conveying of the cast steel parts. In addition, the setting of the conveyor chain also facilitates water control after the cast steel parts leave the water surface.

[0018] 3. The second sprocket in the mounting groove of this utility model can be limited by adjusting the upper screw. Moreover, the distance between the first and second sprockets can be adjusted by rotating the screw, which serves to tension the conveyor chain and thus ensure the stability of the conveying. Furthermore, the screw can be adjusted away from the water surface, making it convenient for the operator to operate.

[0019] 4. The channel steel of this utility model can support the cast steel parts that have just fallen into the water pool; the inclined slope of the fixed seat helps to guide the cast steel parts in the water pool to slowly transfer onto the conveyor chain, which is conducive to the stable transportation of the cast steel parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a heat treatment device for cast steel parts; Figure 2 This is a partial schematic diagram of the second sprocket of a heat treatment device for cast steel parts.

[0021] In the diagram: 1. First water tank; 2. Second water tank; 3. Fixed base; 4. Driven shaft; 5. Second sprocket; 6. Conveyor chain; 7. Support rod; 8. First sprocket; 9. Upper air pipe; 10. Lower air pipe; 11. Limiting block; 12. Fixed block; 13. Lead screw; 14. Adjusting block; 15. Channel steel; 16. Support block; 17. Mounting groove; 18. Support plate. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 As shown, a heat treatment apparatus for cast steel parts includes a first water tank 1 and a second water tank 2. The first water tank 1 is provided with a rapid cooling liquid, and the second water tank 2 is provided with a slow cooling liquid. The steel castings will first enter the first water tank 1 for a first quenching, and then enter the second water tank 2 for a second quenching. Specifically, the first water tank 1 is provided with a conveying device that can transport the cast steel parts in the first water tank 1 to the second water tank 2.

[0024] To ensure the quenching time in the second water tank 2 and the transfer of the cast steel parts from the second water tank 2 to the outside, the second water tank 2 of this utility model is equipped with two sets of conveying devices. The two sets of conveying devices are arranged sequentially back and forth along the conveying direction. The first set of conveying devices can transport the cast steel parts from the first water tank 1 to the second set of conveying devices, and the second set of conveying devices can transport the cast steel parts from the second water tank 2 out of the second water tank 2.

[0025] The conveying device specifically includes several inclined conveying chains 6 arranged at equal intervals. Several outwardly extending support rods 7 are arranged at equal intervals on the conveying chains 6. The upper and lower ends of the conveying chains 6 are respectively connected to the first sprocket 8 and the second sprocket 5. The several conveying chains 6 can convey the cast steel parts obliquely upwards, and the support rods 7 play a certain supporting and limiting role during the conveying process.

[0026] By using inclined conveying devices in the first water tank 1 and the second water tank 2, the quenching process of the cast steel parts is not affected, and the continuous conveying of the cast steel parts is guaranteed. In addition, the setting of the conveyor chain 6 also facilitates water control after the cast steel parts leave the water surface.

[0027] The first sprocket 8, which drives the uppermost end of the conveyor chain 6 in the first water tank 1, is exposed above the first water tank 1. An upper high-pressure air blowing assembly is provided above the first sprocket 8 on the first water tank 1. The upper high-pressure air blowing assembly is installed on the upper edge of the first water tank 1 and can blow high-pressure air above the cast steel parts on the conveyor chain 6 in the first water tank 1. A lower high-pressure air blowing assembly is also provided on the upper edge of the first water tank 1 and can blow high-pressure air below the cast steel parts on the conveyor chain 6 in the first water tank 1.

[0028] By using an inclined conveying device, the castings are transferred from the first water tank 1 containing fast-cooling liquid to the second water tank 2 containing slow-cooling liquid. During the conveying process, the cast steel parts first detach from the water surface of the first water tank 1 and then fall into the second water tank 2, which realizes the water control operation after detachment from the first water tank 1. Then, with the help of the upper high-pressure blowing assembly and the lower high-pressure blowing assembly, high-pressure gas is blown out to complete the cleaning of moisture on the surface of the cast steel parts.

[0029] The high-pressure air blowing assembly of this utility model includes an upper air blowing pipe 9, and an upper air blowing channel is provided on the side wall of the upper air blowing pipe 9. The upper air blowing channel can blow out high-pressure gas, and the high-pressure gas blown out by the upper air blowing channel is directed towards the first water tank 1. The lower high-pressure air blowing assembly includes several lower air blowing pipes 10, which are arranged between adjacent conveyor chains 6 of the first water tank 1. The lower air blowing pipes 10 are provided with lower air blowing channels, which can blow out high-pressure gas. The high-pressure gas blown out by the lower air blowing channels is perpendicular to the conveyor chain 6 of the first water tank 1 and in an oblique upward direction.

[0030] Specifically, each of the upper blowing air pipe 9 and each lower blowing air pipe 10 is equipped with an air pipe connector at its end, and the air pipe connector is connected to a high-pressure air source through a pipeline.

[0031] The lower end of the conveyor chain 6 of this utility model is connected to the fixed base 3. The fixed base 3 of the first water tank 1 is located below the side away from the second water tank 2. The two fixed bases 3 of the second water tank 2 are respectively located below the side near the first water tank 1 and in the middle of the second water tank 2. The fixed base 3 is provided with an inclined mounting groove 17, which is consistent with the inclined conveying direction of the conveyor chain 6. A driven shaft 4 is rotatably mounted in the mounting groove 17, and a second sprocket 5 is mounted on the driven shaft 4. The conveyor chain 6 is driven by the first sprocket 8 and the second sprocket 5.

[0032] The upper end of the conveyor chain 6 is connected to a drive shaft via a first sprocket 8. The drive shaft of the first water tank 1 is mounted on the upper edge of the first water tank 1 near the second water tank 2 via a bearing seat. The drive shaft on the front side of the second water tank 2 is mounted on the support plate 18 in the middle of the second water tank 2 via a bearing seat. The drive shaft on the front side of the second water tank 2 is mounted on the upper edge of the second water tank 2 away from the first water tank 1 via a bearing seat. One end of the drive shaft is connected to a drive reduction motor.

[0033] The above structure ensures the inclined conveying of the conveyor chain 6. Since the second sprocket 5 below the conveyor chain 6 is installed in the mounting groove 17 through the driven shaft 4, in order to position the driven shaft 4, the present invention provides rotation limiting components at both ends of the driven shaft 4 to prevent the driven shaft 4 from disengaging from the mounting groove 17.

[0034] The rotation limit assembly specifically includes two limit blocks 11. One end of each limit block 11 is provided with a semi-circular opening groove, which can rotate and engage with both ends of the driven shaft 4. The other end of each limit block 11 is connected by a fixing block 12, and a lead screw 13 is rotatably connected to the end of the fixing block 12 away from the limit block 11.

[0035] Fixed frames are provided on the upper edge of the side wall of the first water tank 1 near the second water tank 2, on the support plate 18, and on the upper edge of the side wall of the second water tank 2 away from the first water tank 1. An adjusting block 14 with a threaded hole is fixed on the fixed frame. The direction of the threaded hole is consistent with the inclined conveying direction of each conveying device. The lead screw 13 is screwed to the threaded hole. Rotating the lead screw 13 can drive the limiting block 11 to move along the direction of the mounting groove 17 through the fixed block 12.

[0036] The second sprocket 5 in the mounting groove 17 of this utility model can be limited by adjusting the lead screw 13 above. Moreover, the distance between the first sprocket 8 and the second sprocket 5 can be adjusted by rotating the lead screw 13, which serves to tension the conveyor chain 6 and thus ensure the stability of the conveying. In addition, the adjustment of the lead screw 13 is off the water surface, which makes it convenient for the operator to operate.

[0037] The upper surface of the fixing block 12 of this utility model is provided with an upward-facing channel steel 15. The channel steel 15 is arranged parallel to the lead screw 13, and the conveyor chain 6 can be supported in the channel steel 15. A support block 16 is provided at the bottom of the end of the channel steel 15 away from the fixing block 12. The bottom of the support block 16 is provided with a mating hole. The end of the channel steel 15 away from the fixing block 12 is sleeved on the lead screw 13 through the mating hole, thereby ensuring that both ends of the channel steel 15 can be supported. The purpose of the above structure is to provide support for the cast steel parts that have just fallen into the water pool.

[0038] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A heat treatment apparatus for cast steel parts, characterized in that, It includes a first water tank (1) and a second water tank (2). The first water tank (1) is provided with a fast coolant, and the second water tank (2) is provided with a slow coolant. The first water tank (1) is provided with a conveying device that can convey the cast steel parts in the first water tank (1) to the second water tank (2). The second water tank (2) is provided with two sets of conveying devices. The two sets of conveying devices are arranged in sequence along the conveying direction. The first set of conveying devices can convey the cast steel parts from the first water tank (1) to the second set of conveying devices. The second set of conveying devices can convey the cast steel parts from the second water tank (2) out of the second water tank (2). The conveying device includes several inclined conveying chains (6) arranged at equal intervals. Several outwardly extending support rods (7) are arranged at equal intervals on the conveying chains (6). The upper and lower ends of the conveying chains (6) are respectively connected to a first sprocket (8) and a second sprocket (5). The several conveying chains (6) can convey the cast steel parts obliquely upward. The first sprocket (8) that drives the uppermost end of the conveyor chain (6) in the first water tank (1) is exposed above the first water tank (1). An upper high-pressure air blowing assembly is provided above the first sprocket (8) in the first water tank (1). The upper high-pressure air blowing assembly is installed on the upper edge of the first water tank (1). The upper high-pressure air blowing assembly can blow high-pressure air above the cast steel parts on the conveyor chain (6) in the first water tank (1). A lower high-pressure air blowing assembly is also provided on the upper edge of the first water tank (1). The lower high-pressure air blowing assembly can blow high-pressure air below the cast steel parts on the conveyor chain (6) in the first water tank (1).

2. The heat treatment apparatus for cast steel parts according to claim 1, characterized in that, The high-pressure blowing assembly includes an upper blowing pipe (9), and an upper blowing channel is provided on the side wall of the upper blowing pipe (9). The upper blowing channel can blow out high-pressure gas, and the high-pressure gas blown out by the upper blowing channel is directed toward the first water tank (1).

3. The heat treatment apparatus for cast steel parts according to claim 2, characterized in that, The high-pressure blowing assembly includes several blowing pipes (10). The blowing pipes (10) are arranged between the adjacent conveyor chains (6) of the first water tank (1). The blowing pipes (10) are provided with blowing channels. The blowing channels can blow out high-pressure gas. The high-pressure gas blown out by the blowing channels is perpendicular to the conveyor chain (6) of the first water tank (1) and in an oblique upward direction.

4. The heat treatment apparatus for cast steel parts according to claim 3, characterized in that, Each of the upper blowing air pipes (9) and each of the lower blowing air pipes (10) is provided with an air pipe connector at its end, and the air pipe connector is connected to a high-pressure air source through a pipeline.

5. The heat treatment apparatus for cast steel parts according to claim 1, characterized in that, The lower end of the conveyor chain (6) is connected to the fixed seat (3). The fixed seat (3) of the first water tank (1) is located below the side away from the second water tank (2). The two fixed seats (3) of the second water tank (2) are respectively located below the side close to the first water tank (1) and in the middle of the second water tank (2). The fixed base (3) is provided with an inclined mounting groove (17), the mounting groove (17) is in the same direction as the inclined conveying of the conveying chain (6), a driven shaft (4) is rotatably installed in the mounting groove (17), a second sprocket (5) is installed on the driven shaft (4), and the conveying chain (6) is driven by the first sprocket (8) and the second sprocket (5).

6. The heat treatment apparatus for cast steel parts according to claim 5, characterized in that, The upper end of the conveyor chain (6) is connected to a drive shaft via a first sprocket (8). The drive shaft of the first water tank (1) is mounted on the upper edge of the first water tank (1) near the second water tank (2) via a bearing seat. The drive shaft on the front side of the second water tank (2) is mounted on the support plate (18) in the middle of the second water tank (2) via a bearing seat. The drive shaft on the front side of the second water tank (2) is mounted on the upper edge of the second water tank (2) away from the first water tank (1) via a bearing seat. One end of the drive shaft is connected to a drive reduction motor.

7. The heat treatment apparatus for cast steel parts according to claim 6, characterized in that, The driven shaft (4) is provided with rotation limiting components at both ends to prevent the driven shaft (4) from disengaging from the mounting groove (17); The rotation limiting assembly includes two limiting blocks (11), one end of each limiting block (11) is provided with a semi-circular opening groove, and the semi-circular opening groove of the two limiting blocks (11) can rotate and cooperate with the two ends of the driven shaft (4). The other ends of the two limiting blocks (11) are connected by a fixing block (12), and a lead screw (13) is rotatably connected to the end of the fixing block (12) away from the limiting block (11). Fixed frames are provided on the upper edge of the side wall of the first water tank (1) near the second water tank (2), on the support plate (18), and on the upper edge of the side wall of the second water tank (2) away from the first water tank (1). An adjusting block (14) with a threaded hole is fixed on the fixed frame. The direction of the threaded hole is consistent with the inclined conveying direction of each conveying device. The lead screw (13) is screwed to the threaded hole. Rotating the lead screw (13) can drive the limiting block (11) to move along the direction of the mounting groove (17) through the fixed block (12).

8. The heat treatment apparatus for cast steel parts according to claim 7, characterized in that, The upper surface of the fixed block (12) is provided with an upward-facing channel steel (15), and the setting direction of the channel steel (15) is parallel to the lead screw (13); The conveyor chain (6) can be installed in the channel steel (15).

9. A heat treatment apparatus for cast steel parts according to claim 8, characterized in that, The bottom of the channel steel (15) away from the fixed block (12) is provided with a support block (16), and the bottom of the support block (16) is provided with a mating hole; The end of the channel steel (15) away from the fixed block (12) is sleeved on the lead screw (13) through a mating hole.

10. A heat treatment apparatus for cast steel parts according to claim 5, characterized in that, The fixed seat (3) has a downward slope surface along the conveying direction.

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