Water quenching device for iron casting

Abstract

The utility model provides a water quenching device for iron castings, which relates to the field of water quenching of iron castings and comprises an outer annular bin with an open upper end, an outer water inlet penetrating through the lower end of the outer annular bin, a water inlet pipe communicated with the lower end of the outer water inlet, and a plurality of outer water outlets penetrating through the side wall with smaller radius around the central axis of the outer annular bin in a circumferential array manner, the outer water outlet is communicated with a sprinkler head, and the water outlet end of the sprinkler head faces the center shaft of the outer annular bin; the inner annular bin is rotationally matched in the outer annular bin, the upper end of the inner annular bin is open, an inner water inlet used for being communicated with the outer water inlet penetrates through the lower end of the inner annular bin, and inner water outlets matched with the outer water outlets in number and used for being communicated with the outer water outlets penetrate through the side wall with the small radius around the center axis of the inner annular bin in a circumferential array mode. The sealing ring is movably arranged in the height direction of the inner annular bin. The device does not need a water pump to drive cooling water to flow, has a large coverage on the surface of the iron casting during water quenching, and has higher practicability.

Description

Technical Field

[0001] The present application relates to the field of water quenching of cast iron parts, and in particular to a water quenching device for cast iron parts. Background Art

[0002] When processing wear-resistant cast iron parts, they need to be heat treated and water quenched after the heat treatment to quickly cool the cast iron parts to achieve a specific structural transformation, thereby improving or enhancing the performance of the cast iron parts. In the prior art, the water quenching method of cast iron parts is generally to immerse them in cooling water. This water quenching method is more convenient, but it is more troublesome to replace the cooling water in the cooling pool; there is also a spraying water quenching method, which uses a nozzle connected to a branch pipe to spray cooling water on the cast iron parts to achieve cooling. This water quenching method requires a water pump to drive the cooling water in the branch pipe to flow, and the water quenching range is difficult to cover the surface of the cast iron parts, the economic benefits are not high, and the water quenching effect is poor. Utility Model Content

[0003] In order to solve the above-mentioned defects of the related prior art, the present application provides a water quenching device for cast iron parts, which does not require a water pump to drive the cooling water to flow, and has a large coverage area on the surface of the cast iron parts during water quenching, and has strong practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] A water quenching device for cast iron parts, comprising:

[0006] The outer annular bin is open at its upper end, and is penetrated by an external water inlet at its lower end, and the lower end of the external water inlet is connected to a water inlet pipe, and a side wall with a smaller radius of the outer annular bin is penetrated by a plurality of external water outlets in a circular array around its own central axis, and the external water outlets are connected to a water spray head, and the water outlet end of the water spray head is arranged toward the central axis of the outer annular bin;

[0007] The inner annular bin is rotatably fitted in the outer annular bin, with its upper end being open and its lower end being penetrated by an inner water inlet for connecting with an outer water inlet, and its side wall with a smaller radius is penetrated by inner water outlets in a circular array around its own central axis, the number of which matches the outer water outlets and is used to connect with the outer water outlet, and a sealing ring is fitted in the inner annular bin, and the sealing ring is movable along the height direction of the inner annular bin.

[0008] Furthermore, a connecting frame is provided at the upper end of the inner annular warehouse, the connecting frame is connected to a connecting rod, the connecting rod is connected to a rotating ring, the rotating ring is coaxially arranged with the inner annular warehouse and rotates around its own central axis, and a linear cylinder is provided on the rotating ring along the height direction of the inner annular warehouse, and the driving shaft of the linear cylinder is connected to the sealing ring.

[0009] Furthermore, a support block is connected to the outer wall surface of the side wall with a larger radius of the outer annular warehouse, a first support rod is connected to the upper surface of the support block, the first support rod is connected to a support sleeve, a rotating ring is rotatably fitted on the support sleeve, a second support rod is connected to the lower surface of the support block, the second support rod is connected to the upper end of a water receiving pool, and the water receiving pool is coaxial with the outer annular warehouse and arranged directly below it.

[0010] Furthermore, a matching groove is penetrated through the upper surface of the support sleeve and a mounting plate is provided. A rotating motor is provided on the mounting plate along the radial direction of the rotating ring. The driving shaft of the rotating motor is coaxially connected with a rotating wheel. The circumference of the rotating wheel passes through the matching groove and contacts the upper surface of the rotating ring.

[0011] The beneficial effects of the utility model are:

[0012] A moving sealing ring is used to drive the flow of cooling water, and the pumping and spraying modes are switched by the rotation of the inner annular bin. No water pump is needed to drive the flow of liquid, thus simplifying the water spraying steps. Multiple water spray heads are provided, and a large surface area of ​​the cast iron part is covered during water spraying and water quenching. Only one water source and a water inlet pipe are required to supply water to multiple water spray heads, thus improving economic benefits and water quenching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of a water quenching device for cast iron parts according to an embodiment of the present application.

[0014] Figure 2 It is a partial cross-sectional stereoscopic schematic diagram of the exploded structure of the outer annular bin, the inner annular bin, the sealing ring, and the rotating ring of an embodiment of the present application.

[0015] Figure 3 It is a partial cross-sectional stereoscopic schematic diagram of the exploded structure of the support sleeve, rotating ring, rotating wheel, mounting plate, and rotating motor of an embodiment of the present application.

[0016] Markings in the figure: 1-outer annular warehouse, 11-outer water inlet, 12-outer water outlet, 13-sprinkler head, 14-support block, 15-first support rod, 16-support sleeve, 17-second support rod, 18-water receiving pool, 19-matching groove, 110-mounting plate, 111-rotating motor, 112-rotating wheel, 113-water inlet pipe, 2-inner annular warehouse, 21-inner water inlet, 22-inner water outlet, 23-sealing ring, 24-connecting frame, 25-connecting rod, 26-rotating ring, 27-linear cylinder. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0018] like Figure 1 As shown, this embodiment provides a water quenching device for cast iron parts, including an outer annular bin 1 and an inner annular bin 2.

[0019] Specifically, Figure 1 and Figure 2 As shown, the upper end of the outer annular bin 1 is open, and the lower end thereof is penetrated by an external water inlet 11, and the lower end of the external water inlet 11 is connected to a water inlet pipe 113, and the water inlet pipe 113 is connected to an external water source; the side wall of the outer annular bin 1 with a smaller radius is penetrated by eight external water outlets 12 in a circular array around its own central axis, and the external water outlets 12 are connected to a water spray head 13, and the water outlet end of the water spray head 13 is arranged toward the central axis of the outer annular bin 1, for spraying cooling water onto the cast iron parts.

[0020] Specifically, Figure 1 and Figure 2 As shown, the inner annular bin 2 is rotatably fitted in the outer annular bin 1. Specifically, the outer wall of the inner annular bin 2 is in contact with the inner wall of the outer annular bin 1 to ensure airtightness. The upper end of the inner annular bin 2 is open, and the lower end is penetrated by an inner water inlet 21 for communicating with the outer water inlet 11. The side wall with a smaller radius is penetrated by inner water outlets 22 in a circular array around its own central axis, the number of which matches the outer water outlet 12 and is used to communicate with the outer water outlet 12. In this example, eight inner water outlets 22 are provided. A sealing ring 23 is provided in the inner annular bin 2. The sealing ring 23 is movable along the height direction of the inner annular bin 2, and the annular surfaces on both sides of the sealing ring 23 are in contact with the inner walls on both sides of the inner annular bin 2 to ensure airtightness.

[0021] During operation, the iron castings that need to be heat treated and water quenched are hoisted to the central axis of the outer annular bin 1 by using a hanging device, and the iron castings are lowered to the intersection of the water spraying tracks of the water spraying heads 13; the inner annular bin 2 is rotated to connect the outer water inlet 11 with the inner water inlet 21, at which time the outer water outlet 12 is not connected with the inner water outlet 11, and the sealing ring 23 is moved upward, the volume of the closed space formed by the sealing ring 23 and the inner annular bin 2 becomes larger, the air pressure is reduced, and the cooling water flows from the water through the air pressure difference. The source enters the enclosed space through the water inlet pipe 113, the external water inlet 11, and the internal water inlet 21 in sequence; after the water absorption is completed, the inner annular bin 2 is rotated so that the external water outlet 12 is connected with the internal water outlet 11 one by one. At this time, the external water inlet 11 is not connected with the internal water inlet 21, and the sealing ring 23 is moved downward. The volume of the enclosed space formed by the sealing ring 23 and the inner annular bin 2 is reduced, and the air pressure is increased, forcing the cooling water to be sprayed from the water spray head 13 onto the cast iron part, that is, water quenching is performed.

[0022] Preferably, Figure 1 and Figure 2As shown, two connecting frames 24 are provided at the upper end of the inner annular warehouse 2, and the connecting frames 24 are connected with connecting rods 25 along the height direction of the inner annular warehouse 2. The connecting rods 25 are vertically connected with the same rotating ring 26. The rotating ring 26 is coaxially arranged with the inner annular warehouse 2 and rotates around its own central axis, and is used to drive the inner annular warehouse 2 to rotate in the outer annular warehouse 1; two linear cylinders 27 are provided on the rotating ring 26 along the height direction of the inner annular warehouse 2, and the driving shafts of the linear cylinders 27 are connected to the sealing ring 23, which is used to drive the sealing ring 23 to move in the inner annular warehouse 2 along the height direction of the inner annular warehouse 2.

[0023] Preferably, Figure 1 As shown, the outer wall surface of the side wall with a larger radius of the outer annular warehouse 1 is connected to a support block 14. In this example, there are four support blocks 14 in a circular array around the central axis of the outer annular warehouse 1; the upper surfaces of the support blocks 14 are connected to first support rods 15 arranged along the height direction of the outer annular warehouse 1, and the first support rods 15 are connected to support sleeves 16. The rotating ring 26 is rotatably fitted on the four support sleeves 16, and the support sleeves 16 are used to support the rotating ring 26; the lower surfaces of the support blocks 14 are connected to second support rods 17 arranged along the height direction of the outer annular warehouse 1, and the second support rods 17 are connected to the upper end of a water receiving pool 18. The water receiving pool 18 is coaxial with the outer annular warehouse 1 and is arranged directly below it. The second support rods 17 are used to support the outer annular warehouse 1, and the water receiving pool 18 is used to collect waste water falling after water quenching.

[0024] Preferably, Figure 3 As shown, a matching groove 19 is passed through the upper surface of the support sleeve 16 and a mounting plate 110 is provided. A rotating motor 111 is provided on the mounting plate 110 along the radial direction of the rotating ring 26. The driving shaft of the rotating motor 111 is coaxially connected with a rotating wheel 112. The circumference of the rotating wheel 112 passes through the matching groove 19 and contacts with the upper surface of the rotating ring 26. When working, the rotating motor 111 drives the rotating wheel 112 to rotate, and the rotating wheel 112 drives the rotating ring 26 to rotate around its own central axis.

[0025] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application.

Claims

1. A water quenching device for cast iron parts, characterized in that: include: The outer annular bin (1) is open at its upper end and has an external water inlet (11) extending through its lower end. The lower end of the external water inlet (11) is connected to a water inlet pipe (113). A plurality of external water outlets (12) are provided in a circular array around the central axis of the outer annular bin (1) through a side wall with a smaller radius. The external water outlets (12) are connected to a water spray head (13). The water outlet end of the water spray head (13) is arranged toward the central axis of the outer annular bin (1). The inner annular bin (2) is rotatably fitted in the outer annular bin (1), the upper end of which is open, the lower end of which is penetrated by an inner water inlet (21) for communicating with the outer water inlet (11), and the side wall with a smaller radius is penetrated by a number of inner water outlets (22) matching the outer water outlets (12) and for communicating with the outer water outlets (12) in a circular array around its own central axis. The inner annular bin (2) is fitted with a sealing ring (23), which is arranged to move along the height direction of the inner annular bin (2).

2. The water quenching device for cast iron parts according to claim 1, characterized in that: A connecting frame (24) is provided at the upper end of the inner annular bin (2), the connecting frame (24) is connected to a connecting rod (25), the connecting rod (25) is connected to a rotating ring (26), the rotating ring (26) is coaxially arranged with the inner annular bin (2) and is rotatable around its own central axis, a linear cylinder (27) is provided on the rotating ring (26) along the height direction of the inner annular bin (2), and a driving shaft of the linear cylinder (27) is connected to a sealing ring (23).

3. The water quenching device for cast iron parts according to claim 2, characterized in that: A support block (14) is connected to the outer wall surface of the side wall with a larger radius of the outer annular bin (1); a first support rod (15) is connected to the upper surface of the support block (14); the first support rod (15) is connected to a support sleeve (16); a rotating ring (26) is rotatably engaged with the support sleeve (16); a second support rod (17) is connected to the lower surface of the support block (14); the second support rod (17) is connected to the upper end of a water receiving pool (18); and the water receiving pool (18) is coaxial with the outer annular bin (1) and is arranged directly below it.

4. The water quenching device for cast iron parts according to claim 3, characterized in that: The upper surface of the support sleeve (16) is penetrated by a matching groove (19) and is provided with a mounting plate (110). A rotating motor (111) is provided on the mounting plate (110) along the radial direction of the rotating ring (26). The driving shaft of the rotating motor (111) is coaxially connected to a rotating wheel (112). The circumference of the rotating wheel (112) passes through the matching groove (19) and contacts the upper surface of the rotating ring (26).

Images