Rapid air cooling device for quenched steel balls

Abstract

The utility model discloses a rapid air cooling device for quenched steel balls, which belongs to the technical field of steel ball cooling and comprises a cooling shell, an outer cylinder is mounted in the cooling shell, a rotatable honeycomb hole inner cylinder is mounted in the outer cylinder, and the steel balls are placed between the outer cylinder and the honeycomb hole inner cylinder. After the steel balls fall between the outer cylinder and the honeycomb hole inner cylinder, a second driving motor is started to drive the honeycomb hole inner cylinder to rotate, and the steel balls directly falling from the outer cylinder and the honeycomb hole inner cylinder can rotate through a scraping plate, so that the steel balls are in full contact with outside air for cooling; a first driving motor is started to rotate to drive fan blades to rotate to blow air into the honeycomb hole inner barrel, the blown air passes through a conical protrusion, the air is diffused to the periphery and enters the space between the outer barrel and the honeycomb hole inner barrel to make contact with the steel balls, and then heat of the steel balls is discharged outwards through a second ventilation grid and a first ventilation grid; and therefore, the cooling speed is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel ball cooling, in particular to a device for rapid air cooling of steel balls after quenching. Background Art

[0002] After the bearing steel ball is heated and kept warm for a certain period of time in the quenching furnace, it will be poured into the quenching oil pool. After cooling in the quenching oil pool for a certain period of time, it will be lifted from the quenching oil pool to the ground for air cooling. After the bearing steel ball cools to room temperature, it will be quickly tempered. The time it takes for the bearing steel ball to be taken out of the quenching oil pool and cooled to room temperature is called the air cooling time. The length of the air cooling time determines the content of tempered martensite and residual austenite and the quality of the structure of the bearing steel ball after the first tempering.

[0003] At present, the prior art, authorization announcement number CN202658191U discloses a steel ball cooling and quenching device, in which half of the metal barrel is immersed in the quenching medium. When the steel ball enters the metal barrel, the motor controls the metal barrel to rotate forward, and the steel ball slides on the bottom of the metal barrel. When the steel ball is cooled, the motor controls the metal to reverse, and the steel ball is brought to the highest point under the action of the ball-carrying plate and falls into the ball receiving bucket and flows into the ball loading frame to complete the ball unloading. The steel ball adopts the above-mentioned rolling cooling method, which can make the steel ball dissipate heat evenly, thereby greatly improving the hardness uniformity of the steel ball, especially for steel balls with a diameter larger than, the effect is particularly obvious.

[0004] The above-mentioned prior art also has the following defects: the temperature of the steel ball after quenching is still higher than room temperature, and there is quenching medium on the surface of the steel ball, which needs to be cooled to room temperature and the quenching medium needs to be processed, which makes the production time of the steel ball longer. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A device for rapid air cooling of steel balls after quenching comprises a cooling shell, first ventilation grilles are arranged on both side outer walls of the cooling shell, ventilation holes are arranged on one side outer wall of the cooling shell, a mounting plate is installed on the outer wall of the ventilation hole, a first driving motor is installed on the outer wall of the mounting plate, a rotating end of the first driving motor passes through the mounting plate and is connected with a fan blade, an outer cylinder is installed inside the cooling shell, a rotatable honeycomb hole inner cylinder is installed inside the outer cylinder, a plurality of second ventilation grilles are arranged on the outer wall of the outer cylinder, steel balls are placed between the outer cylinder and the honeycomb hole inner cylinder, the first driving motor rotates to drive the fan blades to rotate to drive external wind into the interior of the honeycomb hole inner cylinder through the ventilation holes and contact with the steel balls between the honeycomb hole inner cylinder and the outer cylinder, and the wind discharges heat to the outside from the second ventilation grilles and the first ventilation grilles.

[0008] Preferably, a slot is provided on one side of the upper end of the cooling shell, and a feed port is connected to the outer wall of the outer cylinder near the upper end. The feed port passes through the slot, and a plurality of downwardly inclined and relatively positioned inclined plates are provided inside the feed port. The steel balls move between the outer cylinder and the honeycomb inner cylinder through the plurality of inclined plates.

[0009] Preferably, mounting holes are provided at both ends of the outer cylinder, and the honeycomb hole inner cylinder is rotatably connected to the inside of the mounting holes on both sides, one end of the honeycomb hole inner cylinder is penetrated, and a conical protrusion is connected to the inner wall of the honeycomb hole inner cylinder opposite to the penetration point, and the tip part of the conical protrusion faces the penetration point, and the wind blows toward the conical protrusion and spreads to the surroundings.

[0010] Preferably, a scraper plate is connected to the outer wall of the honeycomb hole inner cylinder, and a second drive motor is installed on the outer wall of the cooling shell. The rotating end of the second drive motor is inserted into the interior of the cooling shell and connected to the end of the conical protrusion. The rotation of the second drive motor drives the honeycomb hole inner cylinder to rotate, and the scraper plate stirs the steel balls between the outer cylinder and the honeycomb hole inner cylinder.

[0011] Preferably, a cylinder door is rotatably connected to one side of the outer wall of the outer cylinder, a handle is connected to the outer wall of the cylinder door, and a ball receiving plate is connected to the outer wall of the feed port near the outer wall of the cylinder door, and the steel ball falls on the ball receiving plate when the cylinder door is opened.

[0012] Preferably, the bottom of the cooling shell is provided with an inner concave inclined groove, and the outer wall of the cooling shell is provided with an opening.

[0013] Preferably, a liquid drain pipe communicating with the inner concave inclined groove is connected to one side of the outer wall of the cooling shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] After the steel ball falls between the outer cylinder and the honeycomb hole inner cylinder, the second drive motor is started to drive the honeycomb hole inner cylinder to rotate. The scraper plate can make the steel ball that directly falls from the outer cylinder and the honeycomb hole inner cylinder rotate, and then fully contact with the outside air for cooling. The first drive motor is started to rotate to drive the fan blades to blow air into the inner cylinder of the honeycomb hole. The blown wind diffuses to the surroundings through the conical protrusion and enters between the outer cylinder and the honeycomb hole inner cylinder to contact the steel ball. Then the heat of the steel ball is discharged outward through the second ventilation grille and the first ventilation grille, so that the cooling speed can be faster. In the cooling process, the quenching medium on the surface of the steel ball falls into the inside of the concave inclined groove through the second ventilation grille and is discharged outward through the drain pipe. The use of a rapid air cooling device for steel balls after quenching can greatly shorten the cooling time of the steel balls in the air after quenching, so that after quenching, the steel balls can quickly enter the primary tempering tank for primary tempering, so that the content of residual austenite in the bearing steel ball is lower, the content of tempered martensite is higher, more uniform and fine, and the organizational level of the steel ball is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the device for rapid air cooling of steel balls after quenching in the utility model;

[0017] Figure 2 This is a schematic diagram of the cooling shell structure in the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the outer tube and the honeycomb inner tube in the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer tube in the utility model;

[0020] Figure 5 This is a schematic diagram of the inner cylinder structure in the utility model;

[0021] Figure 6 It is a schematic diagram of the back structure of the inner tube in the utility model.

[0022] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0023] 100, cooling housing; 101, first ventilation grille; 102, opening; 103, drain pipe; 104, inner concave chute; 105, mounting plate; 106, fan blade; 107, first drive motor; 108, slot;

[0024] 200, feed port; 201, outer cylinder; 202, second ventilation grille; 203, ball receiving plate; 204, handle; 205, mounting hole; 206, tilting plate; 207, cylinder door;

[0025] 300, honeycomb hole inner cylinder; 301, conical protrusion; 302, scraper plate; 303, second drive motor. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0029] like Figure 1 and 3 As shown, it is a schematic structural diagram of a device for rapid air cooling of steel balls after quenching in a preferred embodiment of the utility model. The device for rapid air cooling of steel balls after quenching in this embodiment comprises a cooling shell 100, an outer cylinder 201 is installed inside the cooling shell 100, a rotatable honeycomb hole inner cylinder 300 is installed inside the outer cylinder 201, and the steel balls are placed between the outer cylinder 201 and the honeycomb hole inner cylinder 300. In this embodiment, the steel balls are rotated between the outer cylinder 201 and the honeycomb hole inner cylinder 300 by rotating the honeycomb hole inner cylinder 300, so that sufficient air exchange with the outside can be carried out, so that the cooling effect is better.

[0030] like Figure 1-2As shown, it is a schematic diagram of the cooling shell structure in this embodiment, the outer walls of both sides of the cooling shell 100 are provided with a plurality of first ventilation grilles 101 opposite to each other, the outer wall of one side of the cooling shell 100 near the bottom is provided with an opening 102, the inner bottom of the cooling shell 100 is provided with a concave inclined groove 104, the outer wall of the cooling shell 100 near the bottom is detachably connected with a drain pipe 103 connected with the inside of the concave inclined groove 104, the outer wall of the cooling shell 100 away from the first ventilation grilles 101 on both sides is provided with ventilation holes, the outer wall of the cooling shell 100 near the ventilation holes is detachably connected with a mounting plate 105, the outer wall of the mounting plate 105 away from the ventilation hole is detachably connected with a first drive motor 107, the rotating end of the first drive motor 107 passes through the mounting plate 105 and is detachably connected with a fan blade 106, the cooling shell 100 A slot 108 is provided on one side of the upper end. In the present embodiment, the inner part of the cooling shell 100 is used to install the outer cylinder 201 and the honeycomb hole inner cylinder 300. The quenching medium left by the steel ball can be discharged outward through the drain pipe 103 through the concave inclined groove 104. The fan blades 106 are driven to rotate by the first driving motor 107, so that the external wind can be blown into the interior of the cooling shell 100, and then discharged through the first ventilation grilles 101 on both sides after passing through the steel balls between the outer cylinder 201 and the honeycomb hole inner cylinder 300, so that the internal steel balls can be cooled, so as to solve the problem in the prior art that the temperature of the steel balls after quenching is still higher than the room temperature, and there is a quenching medium on the surface of the steel balls, and it is necessary to place the steel balls to cool down to room temperature and process the quenching medium, so that the production time of the steel balls is long, and the cooling time can be shortened.

[0031] like Figure 3-4As shown, it is a schematic diagram of the installation structure of the cylinder and the honeycomb inner cylinder in this embodiment, the outer wall of the outer cylinder 201 is provided with a plurality of second ventilation grilles 202, the outer wall of the outer cylinder 201 near the upper end is fixedly connected with a feed port 200 connected to the inner part of the outer cylinder 201, the outer wall of the second ventilation grille 202 near the bottom is rotatably connected with a cylinder door 207, the outer wall of the cylinder door 207 is fixedly connected with a handle 204, the outer wall of the outer cylinder 201 near the cylinder door 207 is fixedly connected with a ball receiving plate 203, both ends of the outer cylinder 201 are provided with mounting holes 205, the honeycomb hole inner cylinder 300 is rotatably connected to the inside of the mounting holes 205 on both sides, and the inner wall of the feed port 200 is provided with two downwardly inclined and The inclined plates 206 are installed in opposite directions, and the feed port 200 is inserted into the interior of the slot 108. In this embodiment, the steel balls are added between the outer cylinder 201 and the honeycomb hole inner cylinder 300 through the feed port 200, and the quenching medium can flow outward through the second ventilation grille 202, and the wind blown by the fan blades 106 can enter between the outer cylinder 201 and the honeycomb hole inner cylinder 300 to cool the steel balls. The cylinder door 207 is opened by the handle 204, and the internal steel balls can fall onto the ball receiving plate 203 for removal. The arrangement of the inclined plates 206 on both sides can buffer the falling speed of the steel balls during the process of adding the steel balls, thereby avoiding damage to the outer cylinder 201 and the honeycomb hole inner cylinder 300.

[0032] like Figure 5 As shown, it is a schematic diagram of the inner cylinder structure in this embodiment, the outer wall of the honeycomb hole inner cylinder 300 is fixedly connected with a scraper plate 302, one side of the honeycomb hole inner cylinder 300 is penetrated, and the inner wall of the other side close to the honeycomb hole inner cylinder 300 is fixedly connected with a conical protrusion 301, the tip part of the conical protrusion 301 is facing the through side, and the through side of the honeycomb hole inner cylinder 300 is facing the fan blade 106. In this embodiment, the internal space of the honeycomb hole inner cylinder 300 can be reduced by the conical protrusion 301, so that after the external wind blows into the interior of the honeycomb hole inner cylinder 300, it diffuses to the surroundings through the conical protrusion 301, and then can contact the steel ball between the outer cylinder 201 and the honeycomb hole inner cylinder 300 for heat dissipation.

[0033] like Figure 6 As shown, it is a schematic diagram of the back view structure of the inner cylinder in this embodiment, the back of the honeycomb hole inner cylinder 300 is detachably connected with the rotating end of the second drive motor 303, the second drive motor 303 is detachably connected to the outer wall of the cooling shell 100, and the rotating end passes through the cooling shell 100 and is detachably connected to the outer wall of the honeycomb hole inner cylinder 300. In this embodiment, the honeycomb hole inner cylinder 300 is driven to rotate by the rotation of the second drive motor 303, and then the steel balls between the outer cylinder 201 and the honeycomb hole inner cylinder 300 are stirred by the scraper plate 302 to dissipate heat faster.

[0034] In summary, the specific use of this embodiment is as follows: a steel ball is added between the outer cylinder 201 and the honeycomb hole inner cylinder 300 through the feed port 200, and the inclined plate 206 is provided to buffer the impact force of the steel ball falling, thereby avoiding damage to the outer cylinder 201 and the honeycomb hole inner cylinder 300. After the steel ball falls between the outer cylinder 201 and the honeycomb hole inner cylinder 300, the second drive motor 303 is started to drive the honeycomb hole inner cylinder 300 to rotate, and the scraper plate 302 can make the steel ball directly falling from the outer cylinder 201 and the honeycomb hole inner cylinder 300 rotate, and then fully contact with the outside air for cooling, and the first drive motor 107 is started to rotate to drive the fan blades 106 to rotate to blow air into the interior of the honeycomb hole inner cylinder 300, and the blown wind passes through the conical protrusion 301 so that the wind diffuses to the surroundings and enters the outer cylinder 201 and the honeycomb hole inner cylinder 30 0, and then the heat of the steel ball is discharged outwardly through the second ventilation grille 202 and the first ventilation grille 101, so that the cooling speed can be faster, and in the cooling process, the quenching medium on the surface of the steel ball falls into the interior of the inwardly concave inclined groove 104 through the second ventilation grille 202 and is discharged outwardly through the drain pipe 103. After the cooling is completed, the handle 204 is held to open the cylinder door 207 so that the steel ball falls on the surface of the ball receiving plate 203, so that the steel ball can be taken out. The use of a rapid air cooling device for steel balls after quenching can greatly shorten the cooling time of the steel balls in the air after quenching, so that after quenching, the steel balls can quickly enter the primary tempering tank for primary tempering, so that the content of residual austenite in the bearing steel balls is lower, the content of tempered martensite is higher, more uniform and fine, and the organizational level of the steel balls is further improved.

[0035] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A device for rapidly cooling steel balls after quenching, comprising a cooling housing (100), characterized in that: The outer walls of both sides of the cooling shell (100) are provided with first ventilation grilles (101), the outer wall of one side of the cooling shell (100) is provided with ventilation holes, the outer wall of the ventilation holes is installed with a mounting plate (105), the outer wall of the mounting plate (105) is installed with a first drive motor (107), the rotating end of the first drive motor (107) passes through the mounting plate (105) and is connected to a fan blade (106), the interior of the cooling shell (100) is installed with an outer cylinder (201), and the interior of the outer cylinder (201) is installed with a rotatable honeycomb The honeycomb hole inner cylinder (300) and the outer wall of the outer cylinder (201) are provided with a plurality of second ventilation grilles (202), and the steel balls are placed between the outer cylinder (201) and the honeycomb hole inner cylinder (300). The first driving motor (107) rotates to drive the fan blades (106) to rotate so that the external wind enters the interior of the honeycomb hole inner cylinder (300) through the ventilation holes and contacts with the steel balls between the honeycomb hole inner cylinder (300) and the outer cylinder (201), and the wind discharges the heat from the second ventilation grilles (202) and the first ventilation grilles (101) to the outside.

2. The device for rapid air cooling of quenched steel balls according to claim 1, characterized in that: A slot (108) is provided on one side of the upper end of the cooling shell (100); an outer wall of the outer cylinder (201) near the upper end is connected to a feed port (200); the feed port (200) passes through the slot (108); a plurality of downwardly inclined and relatively positioned inclined plates (206) are provided inside the feed port (200); and the steel balls move between the outer cylinder (201) and the honeycomb inner cylinder (300) through the plurality of inclined plates (206).

3. The device for rapid air cooling of quenched steel balls according to claim 2, characterized in that: Mounting holes (205) are arranged at both ends of the outer cylinder (201), and the honeycomb hole inner cylinder (300) is rotatably connected to the inside of the mounting holes (205) on both sides. One end of the honeycomb hole inner cylinder (300) is penetrated, and a conical protrusion (301) is connected to the inner wall of the honeycomb hole inner cylinder (300) opposite to the penetration point, and the tip part of the conical protrusion (301) faces the penetration point, and wind blows toward the conical protrusion (301) and spreads to all sides.

4. The device for rapid air cooling of quenched steel balls according to claim 3, characterized in that: The outer wall of the honeycomb hole inner cylinder (300) is connected with a scraper plate (302), and the outer wall of the cooling shell (100) is installed with a second drive motor (303). The rotating end of the second drive motor (303) is inserted into the interior of the cooling shell (100) and connected with the end of the conical protrusion (301). The second drive motor (303) rotates to drive the honeycomb hole inner cylinder (300) to rotate, and the scraper plate (302) stirs the steel balls between the outer cylinder (201) and the honeycomb hole inner cylinder (300).

5. The device for rapid air cooling of quenched steel balls according to claim 4, characterized in that: A cylinder door (207) is rotatably connected to one side of the outer wall of the outer cylinder (201), and a handle (204) is connected to the outer wall of the cylinder door (207). A ball receiving plate (203) is connected to the outer wall of the feed port (200) near the cylinder door (207). When the cylinder door (207) is opened, the steel ball falls on the ball receiving plate (203).

6. The device for rapid air cooling of quenched steel balls according to claim 5, characterized in that: The bottom of the cooling shell (100) is provided with an inner concave inclined groove (104), and the outer wall of the cooling shell (100) is provided with an opening (102).

7. The device for rapid air cooling of quenched steel balls according to claim 6, characterized in that: One side of the outer wall of the cooling shell (100) is connected to a liquid discharge pipe (103) which is in communication with the inner concave inclined groove (104).

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