CN201046977Y - External agitation type hardening bath - Google Patents

Abstract

The utility model discloses workpiece heat treatment equipment, in particular to an external stirring quenching tank. The utility model includes a tank body (22) and is characterized in that: the outside of the tank body (22) is equipped with a stirrer (23), an inlet communicating pipe (18) and an outlet communicating pipe (19) are connected between the stirrer (23) and the tank body (22). The stirrer of the utility model neither occupies the effective space of the tank body, nor affects the workpiece to go in and out of the tank body, at the same time, the utility model eliminates the collision of the workpiece to the stirrer; when in maintenance of the stirrer, the cooling liquid in the tank does not need to be removed, the utility model can carry out on-line maintenance, so the utility model can save the reserve storage tank, improve operating efficiency, simplify equipment and reduce production cost.

Description

External stirring quenching tank

technical field

The utility model relates to a quenching device for workpieces, in particular to an external stirring quenching tank.

Background technique

Quenching is a way to heat treat metal workpieces. First, the workpiece is heated. When it reaches a certain temperature, the workpiece is placed in a tank filled with coolant (oil or water) for quenching. At this time, the workpiece is in the A certain cooling rate lowers the temperature to change the internal metallographic structure, and finally makes the workpiece have corresponding physical properties. The temperature of the cooling liquid in the quenching tank must be uniform, otherwise it will affect the quality of heat treatment, therefore, the cooling liquid in the tank needs to be stirred. The existing quenching tank stirrer is arranged at the top of the tank body, and the rotating shaft is driven to rotate by the rotating device. The rotating shaft is connected with stirring blades, and the stirring blades are located inside the tank body. This kind of quenching tank has the following disadvantages: occupying the effective space of the quenching tank, resulting in a waste of space; when the quenching workpiece enters and exits the quenching tank, it is very easy to collide with the agitator, which will cause damage to the equipment in serious cases; the operation must be stopped when the agitator is maintained. , and all the coolant in the tank is removed, which not only affects production, but also requires a coolant reserve tank, resulting in increased production costs.

Contents of the invention

The purpose of the utility model is to provide an external stirring quenching tank which does not occupy the effective space of the quenching tank, does not need to stop operation during maintenance, has high production efficiency, simplified equipment, and low cost, so as to overcome the shortcomings of the prior art.

The external stirring quenching tank of the utility model includes a tank body, and is characterized in that a stirrer is installed outside the tank body, and an inlet connecting pipe and an outlet connecting pipe are connected between the stirrer and the tank body.

In the external stirring quenching tank of the present utility model, the structure of the agitator is as follows: it includes a guide tube, and the inlet connecting pipe and the outlet connecting pipe are connected with the guide tube. The cylinder is provided with an impeller connected to the bottom end of the rotating shaft. The impeller is composed of spiral blades, and the impeller is located between the upper inlet connecting pipe and the lower outlet connecting pipe. The upper end of the rotating shaft is connected to the rotating device outside the guide cylinder. A sealing device is provided between the rotating shaft and the guide cylinder.

In the external stirring quenching tank of the present invention, the rotating device is a motor.

In the external stirring quenching tank of the utility model, the structure of the sealing device is as follows: a bearing and a lower bearing seat matched with the bearing are set on the rotating shaft, a sealing ring is arranged between the lower bearing seat and the rotating shaft, and the lower bearing seat It is connected with the bottom end of the cylindrical support seat, and the upper end of the cylindrical support seat is connected with the upper end cover of the guide tube, on which the upper end cover is fixed with an upper bearing seat, and a bearing is arranged between the upper bearing seat and the rotating shaft.

In the external stirring quenching tank of the utility model, the sealing ring is a plurality of axially arranged sealing rings sleeved on the rotating shaft and embedded in the inner hole of the lower bearing seat.

In the external stirring quenching tank of the utility model, the motor is connected to the motor seat, the motor seat is connected to the upper end cover, and the shaft of the motor is connected to the rotating shaft through a coupling.

In the external stirring quenching tank of the present utility model, a guide plate is provided at the outlet connecting pipe.

In the external stirring quenching tank of the present utility model, since an agitator is installed on the outside of the tank body, and an inlet connecting pipe and an outlet connecting pipe are connected between the agitator and the tank body, the agitator does not occupy the effective space of the tank body and does not It affects the workpiece entering and leaving the tank, and at the same time prevents the workpiece from colliding with the agitator. When maintaining the agitator, it is not necessary to clear the coolant in the tank, and it can be maintained online, saving a spare storage tank, which not only improves operating efficiency, but also simplifies The equipment is improved, and the production cost is reduced.

Description of drawings

Fig. 1 is the structural representation of the specific embodiment of the present utility model;

Fig. 2 is the structural representation of stirrer;

Fig. 3 is an enlarged view of part A shown in Fig. 2 .

Detailed ways

As shown in the figure: 22 is a tank body, 23 is an agitator located outside the tank body 22, and there are multiple agitators 23, which are evenly distributed outside the tank body 22. The agitator 23 includes a guide tube 17 , an inlet communication pipe 18 is connected between the upper side of the guide tube 17 and the tank body 22 , and an outlet communication tube 19 is connected between the lower side of the guide tube 17 and the tank body 22 . An impeller 20 connected to the bottom end of the rotating shaft 7 is provided inside the guide tube 17. The impeller 20 is composed of spiral blades and is propeller-shaped, and the impeller 20 is just located between the upper inlet communication pipe 18 and the lower outlet communication pipe 19. .

The upper end of the rotating shaft 7 is connected to the rotating device positioned at the outside of the guide tube 17, and a sealing device is provided between the rotating shaft 7 and the guide tube 17. Bearing seat 11, a sealing ring is provided between the lower bearing seat 11 and the rotating shaft 7, and the sealing ring is a plurality of axially arranged sealing rings sleeved on the rotating shaft 7 and embedded in the inner hole of the lower bearing seat 11, including O-shaped sealing rings 12 and lip seal ring 13 and lip seal ring 14, the screw on the lower bearing seat 11 is fixed with gland 15. The lower bearing seat 11 is in contact with the bottom end of the cylindrical support seat 9, and an asbestos rubber sealing gasket 10 is arranged between the two. The upper end of the cylindrical support seat 9 is connected to the upper end cover 25 of the guide tube 17, the upper bearing seat 5 is fixed on the upper end cover 25, the bearing 6 is arranged between the upper bearing seat 5 and the rotating shaft 7, and the inner hole of the upper bearing seat 5 The place is inlaid with a J-shaped skeleton rubber sealing ring 4. On the upper end cover 25, a motor seat 26 is fixedly connected with bolts, and the motor 16 is end-fixed and connected with the motor seat 26 by bolts. The shaft of the motor 16 is connected with the end of the rotating shaft 7 by a flexible coupling and a flat key 1, and the flexible coupling can be an existing coupling, which includes a sprocket 2 and a pair of sprockets that match the sprocket 2. Row chain 3.

An obliquely arranged guide plate 27 is fixedly welded at the outlet connecting pipe 19 .

The working process is as follows: when the motor 16 drives the rotating shaft 7 to rotate, the impeller 20 rotates accordingly. At this time, the coolant in the tank body 22 enters the guide tube 17 from the inlet connecting pipe 18, and then is pushed by the impeller 20 from the outlet connecting pipe 19. In the tank body 22, the cooling liquid in the tank body 22 is continuously circulated. After circulating and stirring, the temperature of the cooling liquid is uniform everywhere. Due to the existence of the guide plate 27, the flow direction of the cooling liquid entering the tank body 22 is different. Different, played a better mixing effect.

Claims (7)

1. An external stirring type quenching tank, which comprises a tank body (22), is characterized in that: an agitator (23) is installed on the outside of the tank body (22), and the agitator (23) and the tank body (22) An inlet connecting pipe (18) and an outlet connecting pipe (19) are connected therebetween. 2. The external stirring quenching tank according to claim 1, characterized in that: the structure of the agitator (23) is: comprising a guide tube (17), the inlet connecting pipe (18) and The outlet connecting pipe (19) is all connected with the guide tube (17), and the impeller (20) connected with the bottom end of the rotating shaft (7) is arranged in the guide tube (17), and the impeller (20) consists of Composed of spiral blades, and located between the upper inlet connecting pipe (18) and the lower outlet connecting pipe (19), the upper end of the rotating shaft (7) is connected to the rotating device located outside the guide tube (17), and the rotating shaft (7) A sealing device is provided between the guide cylinder (17). 3. The external stirring quenching tank according to claim 2, characterized in that: the rotating device is a motor (16). 4. The external stirring quenching tank according to claim 3, characterized in that: the structure of the sealing device is: a bearing (24) and a lower bearing matched with the bearing (24) are set on the rotating shaft (7) Seat (11), a sealing ring is arranged between the lower bearing seat (11) and the rotating shaft (7), the lower bearing seat (11) is connected with the bottom end of the cylindrical support seat (9), and the cylindrical support seat (9) The upper end of the upper end is connected to the upper end cover (25) of the guide tube (17), and the upper bearing seat (5) is fixed on the upper end cover (25), and the bearing (6) is arranged between the upper bearing seat (5) and the rotating shaft (7). ). 5. The external stirring quenching tank according to claim 4, characterized in that: the sealing ring is an axially arranged multi-layer sealing ring set on the rotating shaft (7) and embedded in the inner hole of the lower bearing seat (11). a sealing ring. 6. The external stirring quenching tank according to claim 5, characterized in that: the motor (16) is connected to the motor base (26), and the motor base (26) is connected to the upper end cover (25), The shaft of the motor (16) is connected with the rotating shaft (7) by a coupling. 7. The external stirring quenching tank according to claim 6, characterized in that: the outlet connecting pipe (19) is provided with a guide plate (27).

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