Heat treatment device for valve forgings

Abstract

The utility model belongs to the technical field of heat treatment of valve forgings, and particularly relates to a heat treatment device for valve forgings. By arranging the water storage tank, the water pump, the hose, the connecting water pipe, the conveying water pipe and the water spraying head, forging valve body cooling water can be continuously injected into the quenching pool, the injected forging valve body cooling water drives the stirring spiral blade in the quenching pool to rotate, and the stirring spiral blade drives the cooling water in the quenching pool to flow; therefore, the problem that the cooling efficiency of the forge piece valve body on the inner side of the quenching bath is affected due to high local temperature and low local temperature on the inner side of the quenching bath can be avoided; through the arrangement of the overflow port, cooling water in the quenching pool can be circulated to the water storage tank through the guide plate, and the guide plate can prolong the cooling water overflowing from the quenching pool, so that the air cooling effect of the cooling water overflowing from the quenching pool can be improved, and the cooling water flowing out of the guide plate can freely fall to the quenching pool; therefore, the air cooling effect of the cooling water overflowing out of the quenching bath can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of valve body forging heat treatment technology, concretely to a valve body forging heat treatment device. BACKGROUND

[0002] Forging heat treatment is a series of heat treatment processes for metal parts (forgings) obtained during forging to improve their mechanical properties, hardness, strength, toughness and other characteristics. The purpose of forging heat treatment is to change the internal structure of the metal by controlling the temperature and cooling rate to improve the performance of the parts and prolong the service life. The valve body needs to be processed by a forging heat treatment device during production and processing. Common processes of forging heat treatment include:

[0003] Normalizing: heating the forging to a certain temperature (usually above the critical temperature of steel), then naturally cooling in air to homogenize the internal structure of the steel and improve the overall mechanical properties of the forging:

[0004] Annealing: heating the forging to an appropriate temperature and slowly cooling it. Annealing is usually used to reduce the hardness of the metal, increase its plasticity or eliminate internal stress;

[0005] Quenching: heating the forging to a high temperature (usually in the austenite region), then rapidly cooling it (usually with water, oil or air), to change the crystal structure of the steel to martensite, thereby obtaining higher hardness and strength;

[0006] Tempering: re-heating the quenched forging to a lower temperature (usually between 150°C and 650°C) and then cooling it in air to adjust its hardness and brittleness;

[0007] Carburizing: by exposing the forging to a carbon-rich gas or solid at high temperature, the surface of the forging absorbs carbon, thereby improving the surface hardness and wear resistance;

[0008] Nitriding: heating the forging to a certain temperature and exposing it to nitrogen gas to make the surface of the forging absorb nitrogen and form a nitriding layer, thereby improving the surface hardness, wear resistance and corrosion resistance.

[0009] Quenching is an indispensable step in the heat treatment process of valve body forgings. Currently, when quenching the valve body, the high-temperature valve body is usually immersed in a quenching tank filled with water (or oil) for cooling. When the high-temperature valve body is cooled by water (or oil), the water (or oil) near the valve body will be heated and its temperature will rise. Since the water (or oil) in the quenching tank is not flowing, there will be a large temperature difference between the water (or oil) near the valve body and the water (or oil) far from the valve body, which will affect the quenching efficiency of the valve body.

[0010] Therefore, we propose a valve body forging heat treatment device to solve the above problems. Utility model content

[0011] (I) technical problems solved

[0012] In view of the deficiencies of the prior art, the utility model provides a valve body forging heat treatment device, and the problems in the background art are solved.

[0013] (II) technical solutions

[0014] The utility model discloses in order to realize above-mentioned purpose specifically adopts following technical scheme:

[0015] A valve body forging heat treatment device, including quenching pool, the upper end surface of quenching pool is provided with forging valve body placing subassembly, the inside of quenching pool is provided with two flowing water cooling subassembly, two flowing water cooling subassembly are symmetrical about forging valve body placing subassembly, the flowing water cooling subassembly is used for injecting the cooling water of forging valve body to quenching pool, and the cooling water of forging valve body can flow in quenching pool, and the water of cooling forging valve body can be recycled cooling and use.

[0016] Further, the flowing water cooling subassembly includes a plurality of connecting bases fixedly connected to the inside bottom end of the quenching pool, a connecting shaft is rotatably arranged on the upper end surface of the connecting base, a plurality of stirring spiral leaves are fixedly arranged on the connecting shaft, and a water delivery pipe is arranged on one side of the connecting shaft.

[0017] Further, a water spraying head is fixedly arranged on one end of the water delivery pipe, a connecting water pipe is connected to one end of the plurality of water delivery pipes, a water storage tank is arranged below the connecting water pipe, a water pump is fixedly arranged at the inside bottom end of the water storage tank, and the water pump is connected to the connecting water pipe through a hose.

[0018] Further, a flow guide plate is arranged above the water storage tank, the flow guide plate is an inclined plate, the flow guide plate is fixedly connected to the quenching pool, a water overflow opening is formed in the quenching pool, and the position of the water overflow opening corresponds to the position of the flow guide plate.

[0019] Further, the forging valve body placing subassembly includes a support frame fixedly arranged on the upper end surface of the quenching pool, and two air cylinders are fixedly arranged on the upper end surface of the support frame.

[0020] Further, the output end of the air cylinder penetrates through the support frame, a connecting frame is arranged below the support frame, and the output end of the air cylinder is fixedly connected to the connecting frame.

[0021] Further, a forging valve body placing net box is arranged below the support frame, and the forging valve body placing net box is fixedly connected to the connecting frame.

[0022] (III) beneficial effects

[0023] Compared with the prior art, the valve body forging heat treatment device has the following beneficial effects:

[0024] The utility model discloses, through the setting of water storage tank, water pump, hose, connecting water pipe, conveying water pipe, water jet head can continuously inject the forging valve body cooling water to quenching pool, and the forging valve body cooling water drives the stirring helical vane rotation in quenching pool, and the stirring helical vane drives the flow of cooling water in quenching pool, and this can avoid the problem that the local high temperature, local low temperature of the inside of quenching pool affect the forging valve body cooling efficiency of the inside of quenching pool, and through the setting of overflow port can circulate the cooling water in quenching pool to water storage tank through deflector, and deflector can extend the cooling water overflowed from quenching pool, thereby can improve the air cooling effect of the cooling water overflow quenching pool, and the cooling water flowing from deflector will free fall to quenching pool, and this can effectively improve the air cooling effect of the cooling water overflow quenching pool. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is whole structure schematic diagram of the utility model;

[0026] Figure 2 It is forging valve body placing subassembly perspective view first visual angle of the utility model;

[0027] Figure 3 It is forging valve body placing subassembly perspective view second visual angle of the utility model;

[0028] Figure 4 It is flowing water cooling subassembly perspective view of the utility model.

[0029] In the drawing: 1, quenching pool;2, forging valve body placing subassembly;21, support frame;22, air cylinder;23, connecting frame;24, forging valve body placing net box;3, flowing water cooling subassembly;31, connecting base;32, connecting shaft;33, stirring helical vane;34, conveying water pipe;35, water jet head;36, connecting water pipe;37, water storage tank;38, water pump;39, hose;310, overflow port;312, deflector. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] EMBODIMENT

[0032] As Figures 1-4The utility model discloses a valve body forging heat treatment device, including quenching pool 1, the upper end surface of quenching pool 1 is provided with forging valve body placing subassembly 2, the inboard of quenching pool 1 is provided with two flowing water cooling subassembly 3, two flowing water cooling subassembly 3 about forging valve body placing subassembly 2 symmetry, the flowing water cooling subassembly 3 is used for to quenching pool 1 inside injection forging valve body's cooling water when forging valve body's cooling water can flow in quenching pool 1, and the water of cooling forging valve body can circulate cooling and use.

[0033] As Figure 4 The flowing water cooling subassembly 3 includes a plurality of connecting bases 31 fixedly connected to the inboard bottom end of the quenching pool 1, a connecting shaft 32 rotatably arranged on the upper end surface of the connecting base 31, a plurality of stirring helical blades 33 fixedly arranged on the connecting shaft 32, and a water delivery pipe 34 arranged on one side of the connecting shaft 32. One end of the water delivery pipe 34 is fixedly provided with a water spraying head 35, one end of the plurality of water delivery pipes 34 is connected with a connecting water pipe 36, a water storage tank 37 is arranged below the connecting water pipe 36, a water pump 38 is fixedly arranged at the inboard bottom end of the water storage tank 37, and the water pump 38 is connected with the connecting water pipe 36 through a hose 39. A flow guide plate 312 is arranged above the water storage tank 37, the flow guide plate 312 is an inclined plate, the flow guide plate 312 is fixedly connected with the quenching pool 1, a water overflow port 310 is arranged on the quenching pool 1, and the water overflow port 310 corresponds to the position of the flow guide plate 312.

[0034] The arrangement of the water storage tank 37, the water pump 38, the hose 39, the connecting water pipe 36, the water delivery pipe 34, and the water spraying head 35 can continuously inject the forging valve body cooling water into the quenching pool 1, the injection of the forging valve body cooling water drives the stirring helical blades 33 in the quenching pool 1 to rotate, and the stirring helical blades 33 drive the flow of the cooling water in the quenching pool 1, which can avoid the problem of high local temperature and low local temperature on the inboard of the quenching pool 1, thereby affecting the cooling efficiency of the forging valve body on the inboard of the quenching pool 1. The arrangement of the water overflow port 310 can circulate the cooling water in the quenching pool 1 to the water storage tank 37 through the flow guide plate 312, the flow guide plate 312 can prolong the cooling water overflowing from the quenching pool 1, thereby improving the air cooling effect of the cooling water overflowing from the quenching pool 1, and the cooling water flowing out of the flow guide plate 312 will fall freely into the quenching pool 1, which can effectively improve the air cooling effect of the cooling water overflowing from the quenching pool 1.

[0035] As Figure 2 And Figure 3As shown, the forging valve body placing assembly 2 comprises a support frame 21 fixedly arranged on the upper end face of the quenching pool 1, and the upper end face of the support frame 21 is fixedly provided with two air cylinders 22. The output ends of the air cylinders 22 pass through the support frame 21, and the lower portion of the support frame 21 is provided with a connecting frame 23, and the output ends of the air cylinders 22 are fixedly connected with the connecting frame 23. The lower portion of the support frame 21 is provided with a forging valve body placing net box 24, and the forging valve body placing net box 24 is fixedly connected with the connecting frame 23.

[0036] Through the arrangement of the air cylinders 22, the forging valve bodies placed on the forging valve body placing net box 24 can be transported into the cooling water in the quenching pool 1 for cooling.

[0037] The utility model works as follows:

[0038] Firstly, the forging valve bodies are placed on the forging valve body placing net box 24, and then the air cylinders 22 are started, the air cylinders 22 drive the forging valve bodies on the forging valve body placing net box 24 to move towards the quenching pool 1, until the forging valve bodies on the forging valve body placing net box 24 are immersed in the cooling water in the quenching pool 1, and then the water pump 38 is started, the starting of the water pump 38 sprays the cooling water in the water storage tank 37 to the stirring spiral blades 33 in the quenching pool 1 through the water spraying head 35, the rotation of the stirring spiral blades 33 stirs the cooling water in the quenching pool 1, the stirring of the cooling water makes the cooling water in the quenching pool 1 flow, so that the local high temperature and the local low temperature on the inner side of the quenching pool 1 can be avoided, when the cooling water in the quenching pool 1 exceeds the water limit of the overflow port 310, the cooling water in the quenching pool 1 will overflow from the overflow port 310, and the overflowed cooling water will fall on the flow guide plate 312, and the flow guide plate 312 guides the cooling water to the water storage tank 37.

[0039] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for heat treatment of valve body forgings, comprising a quenching bath (1), characterised in that: The upper end face of the quenching tank (1) is provided with a forged valve body placing assembly (2), the inner side of the quenching tank (1) is provided with two flowing water cooling assemblies (3), the two flowing water cooling assemblies (3) are symmetrical about the forged valve body placing assembly (2), the flowing water cooling assembly (3) is used for injecting cooling water of the forged valve body into the quenching tank (1), the cooling water of the forged valve body can flow in the quenching tank (1), and the water for cooling the forged valve body can be recycled and used.

2. The valve body forging heat treatment apparatus of claim 1, wherein: The flowing water cooling assembly (3) comprises a plurality of connecting bases (31) fixedly connected to the bottom end of the inner side of the quenching tank (1), a connecting shaft (32) is rotationally arranged on the upper end face of the connecting base (31), a plurality of stirring spiral leaves (33) are fixedly arranged on the connecting shaft (32), and a water conveying pipe (34) is arranged on one side of the connecting shaft (32).

3. The valve body forging heat treatment apparatus of claim 2, wherein: One end of the water conveying pipe (34) is fixedly provided with a water spraying head (35), one end of the water conveying pipe (34) is connected with a connecting water pipe (36), a water storage tank (37) is arranged below the connecting water pipe (36), a water pump (38) is fixedly arranged at the bottom end of the inner side of the water storage tank (37), and the water pump (38) is connected with the connecting water pipe (36) through a hose (39).

4. The valve body forging heat treatment apparatus of claim 3, wherein: An inclined guide plate (312) is arranged above the water storage tank (37), the guide plate (312) is fixedly connected with the quenching tank (1), a water overflow port (310) is arranged on the quenching tank (1), and the position of the water overflow port (310) corresponds to the position of the guide plate (312).

5. The valve body forging heat treatment apparatus of claim 1, wherein: The forged valve body placing assembly (2) comprises a support frame (21) fixedly arranged on the upper end face of the quenching tank (1), and two air cylinders (22) are fixedly arranged on the upper end face of the support frame (21).

6. The valve body forging heat treatment apparatus of claim 5, wherein: The output end of the air cylinder (22) penetrates through the support frame (21), a connecting frame (23) is arranged below the support frame (21), and the output end of the air cylinder (22) is fixedly connected with the connecting frame (23).

7. The valve body forging heat treatment apparatus of claim 6, wherein: A forged valve body placing net box (24) is arranged below the support frame (21), and the forged valve body placing net box (24) is fixedly connected with the connecting frame (23).

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