Bearing steel isothermal quenching device

Abstract

The utility model relates to the technical field of bearing steel machining, in particular to a bearing steel isothermal quenching device which comprises a shell, a first limiting groove located on the left side is formed in the top end of the shell, and a second limiting groove is formed in the inner side of the shell. Through components such as a shell, a second limiting groove, a third limiting groove, a limiting block, a limiting shaft, a filter screen, a second collecting hopper and a collecting pipe, steel balls can be completely wrapped through the filter screen, then a handle is held to drive the filter screen to be lifted through a guide block, and the filter screen drives the limiting block to move together; a limiting block moves upwards in a second limiting groove under the action of a limiting shaft and a third limiting groove, when the limiting block moves to the topmost end, a filter screen is turned over, the filter screen is turned over under the action of the limiting shaft and the third limiting groove, and steel balls in the filter screen are poured into a second collecting hopper at a time; and the steel balls are collected to a designated position through a collecting pipe below the second collecting hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing steel processing, in particular to an isothermal quenching device for bearing steel. Background Technique

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. All three major parts of the bearing are made of bearing steel. Among them, the steel ball part needs to undergo a quenching process to enhance its hardness and wear resistance effect. Compared with ordinary quenching, the steel balls manufactured by isothermal quenching have better performance. Isothermal quenching is a heat treatment process for steel, aiming to obtain lower bainite structure by controlling the cooling process, thereby improving the strength, hardness and toughness of the steel. This process method includes, after austenitizing treatment, quenching the workpiece into a salt bath and maintaining it for a sufficient long time to transform it into lower bainite structure, and then cooling it in the air. The heating temperature of isothermal quenching is usually higher than that of ordinary quenching, aiming to improve the stability of austenite and increase its cooling rate to prevent pearlite transformation during isothermal cooling.

[0003] Due to the small volume and smoothness of the bearing steel balls themselves, the existing isothermal quenching devices cannot quickly fish them out at one time, which is very troublesome and delays the construction period. When the existing isothermal quenching devices are quenching, generally, the steel balls in the bearing are directly poured into the isothermal quenching device. During the pouring process, the nitrate solution with a relatively high temperature in the isothermal quenching device will splash out, posing a risk of scalding the surrounding workers. Therefore, an isothermal quenching device for bearing steel is proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an isothermal quenching device for bearing steel to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An isothermal quenching device for bearing steel includes a housing. A first limiting groove is opened at the top of the housing on the left side. A second limiting groove is opened inside the housing. Third limiting grooves are opened inside the housing on both sides of the second limiting groove. Supporting legs are fixedly connected to the bottom of the housing at the edge. A limiting block is snap-fitted inside the second limiting groove. A limiting shaft is rotatably connected inside the limiting block and is located inside the third limiting groove. A filter screen is fixedly connected to the end of the limiting block away from the second limiting groove. A second collecting hopper is fixedly connected to the right side of the housing. A collecting pipe is provided at the bottom of the second collecting hopper. An outlet pipe is provided at the bottom of the housing. A valve is communicated with the outside of the outlet pipe.

[0007] Preferably, a guiding block located inside the first limiting groove is fixedly connected to the top end of the filter net. A first collecting hopper is fixedly connected to the top end of the guiding block. A guiding groove located below the first collecting hopper is formed inside the guiding block. A handle is fixedly connected to the left side of the guiding block. Fixing holes arranged symmetrically are formed in the top end of the outer shell. A fixing rod is snap-fitted inside the fixing holes. The top end of the fixing rod is fixedly connected to an upper cover located above the outer shell.

[0008] Preferably, the second limiting groove, the third limiting groove, the limiting block and the limiting shaft are taken as a group, and there are two groups in total. The second limiting groove, the third limiting groove, the limiting block and the limiting shaft are symmetrically arranged on the surface of the outer shell.

[0009] Preferably, the fixing holes and the fixing rods are taken as a group, and there are two groups of the fixing holes and the fixing rods in total. The outer shell and the upper cover are connected together through the fixing holes and the fixing rods.

[0010] Preferably, the shape of the support legs is a cuboid, and the support legs are symmetrically arranged on the surface of the outer shell.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. In the utility model, through components such as the outer shell, the second limiting groove, the third limiting groove, the limiting block, the limiting shaft, the filter net, the second collecting hopper and the collecting pipe, first, all the steel balls can be wrapped by the arranged filter net. Then, hold the handle and drive the filter net to lift through the guiding block. The limiting block is driven to move together by the filter net. The limiting block moves upward in the second limiting groove under the action of the limiting shaft and the third limiting groove. When the limiting block moves to the topmost position, turn over the filter net. The filter net is turned over under the action of the limiting shaft and the third limiting groove, and the steel balls in the filter net are poured into the second collecting hopper at one time. The steel balls are collected to a designated position through the collecting pipe below the second collecting hopper, thus solving the problem that due to the small volume and smoothness of the bearing steel balls themselves, the existing isothermal quenching device cannot quickly fish them out at one time, which is very troublesome and delays the construction period.

[0013] 2. In the present utility model, through components such as the outer shell, upper cover, guiding block, guiding groove, and first collecting hopper, the heated steel balls are poured into the first collecting hopper. The steel balls enter the guiding groove through the first collecting hopper and slide along the trajectory of the guiding groove into the filter screen for isothermal quenching. By setting the first collecting hopper, guiding block, and guiding groove, the trajectory of the steel balls entering the nitrate solution is extended, making the process of the steel balls entering the nitrate solution smoother, so as to avoid the splashing of the nitrate solution. By setting the upper cover to block the top end of the outer shell, the safety of workers is further ensured, thus solving the problem that in the existing isothermal quenching device during quenching, generally the steel balls in the bearing are directly poured into the isothermal quenching device, and the relatively high-temperature nitrate solution in the isothermal quenching device will splash out during the pouring process, posing a risk of scalding the surrounding workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic top view structure diagram of the present utility model;

[0016] Figure 3 is a schematic top view sectional structure diagram of the present utility model.

[0017] In the figure: 1, outer shell; 2, first limiting groove; 3, second limiting groove; 4, third limiting groove; 5, support leg; 6, limiting block; 7, limiting shaft; 8, filter screen; 9, guiding block; 10, first collecting hopper; 11, guiding groove; 12, handle; 13, second collecting hopper; 14, collecting pipe; 15, fixing hole; 16, fixing rod; 17, upper cover; 18, water outlet pipe; 19, valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meaning, so it cannot be understood as a limitation to the protection scope of the present invention.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0022] An isothermal quenching device for bearing steel, comprising a housing 1. A first limiting groove 2 is provided at the top of the housing 1 on the left side. A second limiting groove 3 is provided inside the housing 1. Third limiting grooves 4 are provided on both sides of the second limiting groove 3 inside the housing 1. Support legs 5 are fixedly connected to the bottom end of the housing 1 at the edges. A limiting block 6 is snap-fitted inside the second limiting groove 3. A limiting shaft 7 located inside the third limiting groove 4 is rotatably connected to the inside of the limiting block 6. A filter screen 8 is fixedly connected to the end of the limiting block 6 away from the second limiting groove 3. A second collecting hopper 13 is fixedly connected to the right side of the housing 1. A collecting pipe 14 is provided at the bottom end of the second collecting hopper 13. A water outlet pipe 18 is provided at the bottom end of the housing 1. A valve 19 is communicated with the outside of the water outlet pipe 18.

[0023] A guiding block 9 located inside the first limiting groove 2 is fixedly connected to the top end of the filter screen 8. A first collecting hopper 10 is fixedly connected to the top end of the guiding block 9. A guiding groove 11 located below the first collecting hopper 10 is provided inside the guiding block 9. A handle 12 is fixedly connected to the left side of the guiding block 9. Fixing holes 15 are symmetrically provided at the top end of the housing 1. A fixing rod 16 is snap-fitted inside the fixing holes 15. An upper cover 17 located above the housing 1 is fixedly connected to the top end of the fixing rod 16. The second limiting groove 3, the third limiting groove 4, the limiting block 6 and the limiting shaft 7 are a group, and there are two groups in total. The second limiting groove 3, the third limiting groove 4, the limiting block 6 and the limiting shaft 7 are symmetrically arranged on the surface of the housing 1. The fixing holes 15 and the fixing rods 16 are a group, and there are two groups of fixing holes 15 and fixing rods 16 in total. The housing 1 and the upper cover 17 are connected together through the fixing holes 15 and the fixing rods 16. The shape of the support legs 5 is a cuboid, and the support legs 5 are symmetrically arranged on the surface of the housing 1.

[0024] Workflow: When the bearing isothermal quenching device is needed, first pour high-temperature nitrate solution into the outer shell 1, then align the fixing rod 16 at the bottom end of the upper cover 17 with the fixing hole 15. After alignment, press the upper cover 17 to engage the fixing rod 16 and the fixing hole 15, and connect the upper cover 17 and the outer shell 1 by the engagement of the fixing rod 15 and the fixing hole 16. Then pour the heated steel balls into the first collecting hopper 10. The steel balls enter the guiding groove 11 through the first collecting hopper 10, slide along the track of the guiding groove 11 and fall into the filter net 8 for isothermal quenching. By setting the first collecting hopper 10, the guiding block 9 and the guiding groove 11, the track of the steel balls entering the nitrate solution is extended, making the process of the steel balls entering the nitrate solution smoother to avoid the splashing of the nitrate solution. By setting the upper cover 17 to block the top end of the outer shell 1, the safety of the workers is further ensured. After quenching, open the upper cover 17 upward to separate the fixing rod 16 from the fixing hole 15, then hold the handle 12 and drive the filter net 8 to lift through the guiding block 9. The filter net 8 drives the limit block 6 to move together. The limit block 6 moves upward in the second limit groove 3 under the action of the limit shaft 7 and the third limit groove 4. When the limit block 6 moves to the topmost position, flip the filter net 8, and the filter net 8 flips under the action of the limit shaft 7 and the third limit groove 4, pouring the steel balls in the filter net 8 into the second collecting hopper 13 at one time, and collecting the steel balls to the designated position through the collecting pipe 14 under the second collecting hopper 13.

[0025] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An isothermal quenching device for bearing steel, comprising a housing (1), characterized in that: A first limiting groove (2) located on the left is provided at the top end of the housing (1), a second limiting groove (3) is provided inside the housing (1), third limiting grooves (4) are provided on both sides of the second limiting groove (3) inside the housing (1), support legs (5) located at the edge are fixedly connected to the bottom end of the housing (1), a limiting block (6) is snap-fitted inside the second limiting groove (3), a limiting shaft (7) located inside the third limiting groove (4) is rotatably connected to the inside of the limiting block (6), a filter screen (8) is fixedly connected to one end of the limiting block (6) away from the second limiting groove (3), a second collection hopper (13) is fixedly connected to the right side of the housing (1), a collection pipe (14) is provided at the bottom end of the second collection hopper (13), a water outlet pipe (18) is provided at the bottom end of the housing (1), and a valve (19) is communicated with the outside of the water outlet pipe (18).

2. The austempering device for bearing steel according to claim 1, characterized in that: A guiding block (9) located inside the first limiting groove (2) is fixedly connected to the top end of the filter screen (8), a first collection hopper (10) is fixedly connected to the top end of the guiding block (9), a guiding groove (11) located below the first collection hopper (10) is provided inside the guiding block (9), a handle (12) is fixedly connected to the left side of the guiding block (9), fixing holes (15) arranged symmetrically are provided at the top end of the housing (1), a fixing rod (16) is snap-fitted inside the fixing holes (15), and an upper cover (17) located above the housing (1) is fixedly connected to the top end of the fixing rod (16).

3. The austenitizing quenching device for bearing steel according to claim 2, wherein: The second limiting groove (3), the third limiting groove (4), the limiting block (6) and the limiting shaft (7) form a group, and there are two groups in total. The second limiting groove (3), the third limiting groove (4), the limiting block (6) and the limiting shaft (7) are symmetrically arranged on the surface of the housing (1).

4. The isothermal quenching device for bearing steel according to claim 2, characterized in that: The fixing holes (15) and the fixing rods (16) form a group, and there are two groups of the fixing holes (15) and the fixing rods (16). The housing (1) and the upper cover (17) are connected together through the fixing holes (15) and the fixing rods (16).

5. The isothermal quenching device for bearing steel according to claim 1, characterized in that: The shape of the support leg (5) is a cuboid, and the support legs (5) are symmetrically arranged on the surface of the housing (1).

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