CN209893973U

CN209893973U - Smelting furnace stirring device

Info

Publication number: CN209893973U
Application number: CN201920419197.0U
Authority: CN
Inventors: 张占才; 陈正伟; 步怀立; 朱东辉; 周金玲
Original assignee: Shenyang Hengrun Vacuum Technology Co Ltd; SHENYANG HENGJIN VACUUM TECHNOLOGY Co Ltd
Current assignee: Shenyang Hengrun Vacuum Technology Co Ltd; SHENYANG HENGJIN VACUUM TECHNOLOGY Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-03
Anticipated expiration: 2029-03-29

Abstract

The embodiment of the utility model discloses a smelting furnace stirring device, which relates to the technical field of alloy smelting and manufacturing, and the technical scheme comprises a smelting furnace stirring device, which is arranged on a total preparation chamber, a connecting port is arranged on the total preparation chamber, the stirring device comprises a rotating motor and a stirring shaft arranged at the lower end of the rotating motor, a support frame is arranged at the connecting port of the total preparation chamber, a lifting device is arranged on the support frame, and the lifting device drives the rotating motor to move towards one side close to or far away from the total preparation chamber; and a rotary sealing assembly for sealing the rotation of the stirring shaft and a movable sealing assembly which is arranged on the support frame and seals the vertical movement of the rotary sealing assembly are fixed on the outer side of the rotary motor. The problem of make the rubber circle seal effect not good when being used for solving among the prior art because the indoor pressure variation of total preparation is great.

Description

Smelting furnace stirring device

Technical Field

The embodiment of the utility model provides a manufacturing technical field, concretely relates to smelting furnace agitating unit are smelted to the alloy.

Background

The induction heating technology is a technology which makes a material with better magnetic induction obtain induction current through the electromagnetic induction principle so as to achieve the purpose of heating. The induction melting technology is the induction heating technology which has the highest heating efficiency, the fastest speed, low consumption, energy conservation and environmental protection on metal materials at present. The technology is mainly realized on equipment such as an induction melting furnace and the like, and has a very wide application range. In order to facilitate the removal of gas impurities in the metal, the obtained metal alloy material is purer, and most processes occur in a vacuum environment. Meanwhile, in the smelting process, the smelting temperature can be adjusted and alloy metal can be supplemented in time through the control of a vacuum environment and induction heating, so that the refining purpose is achieved. In the melting process, due to the characteristics of the induction melting technology, the liquid metal material can be automatically stirred in the crucible under the interaction of electromagnetic force, so that the components are more uniform, and the induction melting technology has the great advantage.

Compared with the traditional smelting, the vacuum induction smelting has the advantages of energy conservation, environmental protection, good working environment for workers, low labor intensity and great advantages. By utilizing the induction melting technology, the finally poured alloy material has fewer impurities, and the added alloy proportion is more appropriate, so that the requirements of the process on various properties of the material can be better met.

The stirring device of the existing smelting furnace is used for stirring alloy liquid in the smelting process. Agitating unit among the prior art includes rotating electrical machines and the (mixing) shaft of being connected with it, and the (mixing) shaft stretches into always prepares indoor, need seal (mixing) shaft and always prepare room hookup location in the use, seals among the prior art and adopts ordinary rubber circle, after using a period, because the pressure change in the stove is great to, the rubber circle life-span that plays sealed effect is shorter, and sealed effect is relatively poor simultaneously.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a smelting furnace agitating unit to make the not good problem of rubber circle sealing effect when solving among the prior art because the indoor pressure variation of total preparation is great.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to the embodiment of the utility model, the stirring device of the smelting furnace is arranged on a main preparation chamber, a connecting port is arranged on the main preparation chamber, the stirring device comprises a rotating motor and a stirring shaft arranged at the lower end of the rotating motor, a support frame is arranged at the connecting port of the main preparation chamber, a lifting device is arranged on the support frame, and the lifting device drives the rotating motor to move towards or away from one side of the main preparation chamber; and a rotary sealing assembly for sealing the rotation of the stirring shaft and a movable sealing assembly which is arranged on the support frame and seals the vertical movement of the rotary sealing assembly are fixed on the outer side of the rotary motor.

Further, the rotary sealing assembly comprises a sleeve covered outside the stirring shaft, an end plate fixed at one end of the sleeve close to the rotary motor, and a container type mechanical sealing element fixed on the end plate and sealing the stirring shaft.

Furthermore, the rotary sealing assembly comprises a mounting frame arranged on one side of the support frame and a sealing shaft sleeve arranged on the mounting frame and sleeved outside the sleeve, an annular sealing cavity is formed in one side, close to the sleeve, of the sealing shaft sleeve, sealing rings are arranged in the sealing cavity at intervals, and a locking assembly for fixing the sleeve is arranged on one side, far away from the connecting port, of the mounting frame; a lubricating component connected with the sealing cavity is arranged on one side of the mounting rack; and a pressure balance pipeline is further arranged on the mounting frame, and two ends of the pressure balance pipeline are respectively connected with the general preparation chamber and the sealing cavity.

Further, the locking assembly comprises an annular cover plate which is pressed on the sealing shaft sleeve in a pressing mode, one side, close to the sealing cavity, of the annular cover plate extends downwards to form a rib capable of abutting against the sealing cavity, and the annular cover plate and the sealing shaft sleeve are fixedly connected through bolts; a locking plate is covered on the upper side of the annular cover plate, and the locking plate, the sealing shaft sleeve and the mounting frame are fixedly connected through bolts; sealing rubber rings are respectively arranged among the locking plate, the sealing shaft sleeve and the mounting frame; the locking plate is provided with a locking ring which covers the locking groove.

Further, a solenoid valve for controlling the passage or the disconnection of the pressure balance line is provided in the pressure balance line.

Furthermore, the lubricating assembly comprises an oil bottle arranged on the locking plate, an oil pipe is connected to the lower side of the oil bottle, the oil pipe is communicated with the sealing cavity, an oil ring is arranged in the sealing cavity and between two adjacent sealing rings, and a switch for controlling oil supply is arranged on the oil bottle; and a pressure pad is arranged in the sealing cavity and on one side close to the annular cover plate, and the convex edge is in pressure joint with the pressure pad.

Furthermore, one end of the sealing shaft sleeve, which is close to the connecting port, is provided with an annular wear-resisting groove, and a wear-resisting ring is arranged in the wear-resisting groove.

Furthermore, the support frame extends to form an installation cylinder at one side close to the connecting port, and a heat insulation layer is arranged on the inner side of the installation cylinder.

Furthermore, the lifting device comprises a lifting motor fixed on the support frame, a screw rod connected with the lifting motor and vertically arranged, guide posts fixed on the support frame and positioned at two sides of the rotating motor, and a supporting plate for fixing the rotating motor, wherein the supporting plate is sleeved on the guide posts, one side close to the screw rod is connected with a guide block, and the guide block is sleeved on the screw rod; the supporting plate and the end plate are fixedly connected through a connecting screw rod.

Furthermore, an upper travel switch and a lower travel switch are respectively arranged at two ends of the guide post, and when the guide post moves to the top or the bottom, the supporting plate is abutted against the upper travel switch or the lower travel switch.

The embodiment of the utility model provides a have following advantage:

the embodiment of the utility model can seal the stirring shaft in rotation and movement through the rotary sealing component and the movable sealing component, thereby realizing the separation of the rotary sealing and the movable sealing and having better sealing effect; meanwhile, the sealing cavity and the total preparation chamber are connected through the arranged pressure balance pipeline, so that the pressure balance can be carried out on the sealing position of the stirring shaft, and the sealing effect of the sealing ring in the stirring shaft can be kept in a better state under different pressure conditions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of a protruded stirring device in a stirring device of a smelting furnace according to an embodiment of the present invention;

fig. 2 is an enlarged view of a structure a in fig. 1 in a stirring device of a smelting furnace provided in an embodiment of the present invention;

fig. 3 is a schematic view of a protruded movable sealing assembly in a stirring device of a smelting furnace according to an embodiment of the present invention.

In the figure: 1. a total preparation chamber; 11. a connecting port; 2. a stirring device; 21. a rotating electric machine; 22. A stirring shaft; 23. a blade; 3. a support frame; 31. mounting the cylinder; 32. a thermal insulation layer; 4. a lifting device; 41. a lifting motor; 42. a screw rod; 43. a guide post; 44. a support plate; 45. a guide block; 46. an upper travel switch; 47. a lower travel switch; 5. a sealing device; 51. a rotary seal assembly; 511. a sleeve; 512. an end plate; 513. a cartridge mechanical seal; 52. moving the seal assembly; 521. a mounting frame; 522. sealing the shaft sleeve; 5221. sealing the cavity; 5222. a seal ring; 5223. a wear resistant groove; 5224. a wear ring; 53. a locking assembly; 531. an annular cover plate; 5311. a rib; 532. a locking plate; 5321. a sealing groove; 5322. a bidirectional sealing ring; 5323. a locking ring; 533. sealing the rubber ring; 54. a lubrication assembly; 541. an oil bottle; 542. an oil pipe; 543. an oil ring; 544. a pressure pad; 55. a pressure balancing line; 551. an electromagnetic valve.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A stirring apparatus for a melting furnace, as shown in FIG. 1, wherein a connection port 11 is opened in a main preparation chamber 1, and a stirring apparatus 2 is passed through the connection port 11 to perform a stirring operation.

The stirring device 2 comprises a rotating motor 21 and a stirring shaft 22 arranged at the lower end of the rotating motor 21, wherein a blade 23 is arranged at the end part of the stirring shaft 22, and when the stirring device is used, the rotating motor 21 drives the stirring shaft 22 to rotate, so that the blade 23 is driven to rotate to realize the stirring effect on the alloy liquid.

A support frame 3 is arranged on the main preparation chamber 1 and at the position of the connecting port 11, a lifting device 4 is arranged on the support frame 3, and the lifting device 4 drives a rotating motor 21 to lift up and down, so that alloy liquid is uniformly stirred.

The lifting device 4 comprises a lifting motor 41 fixed on the support frame 3, a screw rod 42 connected with the lifting motor 41, guide posts 43 fixed on the support frame 3 and positioned at two sides of the rotating motor 21, and a support plate 44 sleeved on the two guide posts 43 and used for bearing the rotating motor 21, a guide block 45 is horizontally extended on the support plate 44 and positioned at one side close to the screw rod 42, the guide block 45 is in threaded connection with the screw rod 42, the lifting motor 41 drives the screw rod 42 to rotate, the support plate 44 is driven up and down, and therefore the lifting effect of the rotating motor 21 is achieved.

Further, an upper travel switch 46 and a lower travel switch 47 are respectively disposed at two ends of the guide post 43, when the supporting plate 44 moves to the top or bottom of the guide post 43, it abuts on the upper travel switch 46 or the lower travel switch 47, and when the upper travel switch 46 or the lower travel switch 47 is stressed, the lifting motor 41 is turned on to rotate in the opposite direction, thereby realizing the reciprocating motion of the rotating motor 21.

As shown in fig. 2 and 3, in the preparation process, it is necessary to maintain the inside of the preparation chamber 1 in a high pressure state or a vacuum state, and the stirring device 2 is required to be lifted up and down, so that it is necessary to seal the connection port 11. A sealing device 5 for sealing the connection point is provided at the connection port 11.

The sealing device 5 includes a rotary seal assembly 51 fixedly provided outside the rotary motor 21 and sealing rotation of the agitation shaft 22, and a movable seal assembly 52 provided outside the rotary seal assembly 51 and linearly moving the rotary seal assembly 51.

The rotary seal assembly 51 includes a sleeve 511 covering the outside of the stirring shaft 22, an end plate 512 fixed to one end of the sleeve 511 close to the rotary motor 21, and a container type mechanical seal 513 fixed to the end plate 512 and sealing the stirring shaft 22. Wherein, the integrated mechanical seal 513 is the prior art, and can adopt the integrated mechanical seal 513 of leining light tnin or the mechanical seal of zhonggeman, both of which can realize the sealing to the stirring shaft 22.

The rotary seal assembly 51 is arranged on a mounting frame 521 at one side of the support frame 3, and a seal shaft sleeve 522 which is arranged on the mounting frame 521 and sleeved outside the sleeve 511, wherein an annular seal cavity 5221 is formed in one side, close to the inner side of the sleeve 511, of the seal shaft sleeve 522, seal rings 5222 are arranged in the seal cavity 5221 at intervals, and a locking assembly 53 for locking the seal shaft sleeve 522 is arranged on one side, far away from the connecting port 11, of the mounting frame 521.

The locking assembly 53 comprises an annular cover plate 531 pressed on the sealing sleeve 522, and a locking plate 532 positioned on the upper side of the annular cover plate 531, wherein the annular cover plate 531 and the sealing sleeve 522 are fixedly connected through bolts, and the locking plate 532, the sealing sleeve 522 and the mounting frame 521 are fixedly connected through bolts. And sealing rubber rings 533 are respectively arranged among the locking plate 532, the sealing shaft sleeve 522 and the mounting frame 521.

Since the sleeve 511 moves linearly, a lubrication assembly 54 connected to the sealing chamber 5221 is provided at one side of the mounting bracket 521 in order to maintain a sealing effect during the linear movement. The lubricating assembly 54 comprises an oil bottle 541 arranged on the locking plate 532, an oil pipe 542 is connected to the lower end of the oil bottle 541, and one end of the oil pipe 542 far away from the oil bottle 541 is communicated with the seal cavity 5221. An oil ring 543 is provided between two adjacent seal rings 5222 to lubricate the seal rings 5222, and a pressure pad 544 is provided at one end close to the annular cover 531. A rib 5311 that can abut into the sealing chamber 5221 extends on the annular cover 531 at a side close to the sealing chamber 5221. Thus, the seal ring 5222 is positioned to a certain extent, so that the sleeve 511 has a better sealing effect when sliding up and down. The oil bottle 541 is provided with a switch for controlling oil supply. The opening can be opened at intervals to supply oil into the seal ring 5222, thereby achieving a lubricating effect.

Meanwhile, because the pressure in the general preparation chamber 1 changes greatly, the mounting frame 521 is provided with the pressure balance pipeline 55, and two ends of the pressure balance pipeline 55 are respectively communicated with the general preparation chamber 1 and the sealing cavity 5221, so that the pressures on two sides of the sealing ring 5222 are constant, and the sealing effect of the position of the sealing ring 5222 is better. The pressure balance line 55 is also provided with a solenoid valve 551 for controlling the passage or the cutoff thereof.

Next, a seal groove 5321 is formed in the upper side of the lock plate 532 and on the side close to the sleeve, a bidirectional seal ring 5322 is provided in the seal groove 5321, and a lock ring 5323 that covers the seal groove 5321 is provided in the lock plate 532. The last sealing operation is performed by the bidirectional sealing ring 5322, and after a period of use, only the bidirectional sealing ring 5322 needs to be replaced.

An annular wear-resistant groove 5223 is formed in one end of the seal sleeve 522 near the connection port 11, a wear-resistant ring 5224 is provided in the wear-resistant groove 5223, and the sleeve 511 is kept in linear motion by the contact of the wear-resistant ring 5224 with the sleeve 511.

A mounting tube 31 is formed extending from the support frame 3 on a side close to the connection port 11, and a heat insulating layer 32 is provided inside the mounting tube 31. The temperature in the overall preparation chamber 1 is insulated by the provision of an insulating layer 32, which prevents it from influencing the sealing device 5.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A smelting furnace agitating unit, set up on total preparation room (1), its characterized in that: a connecting port (11) is formed in the main preparation chamber (1), the stirring device (2) comprises a rotating motor (21) and a stirring shaft (22) arranged at the lower end of the rotating motor (21), a support frame (3) is arranged at the position, located at the connecting port (11), of the main preparation chamber (1), a lifting device (4) is arranged on the support frame (3), and the lifting device (4) drives the rotating motor (21) to move towards one side close to or far away from the main preparation chamber (1);

and a rotary sealing assembly (51) for sealing the rotation of the stirring shaft (22) and a movable sealing assembly (52) which is arranged on the support frame (3) and seals the vertical movement of the rotary sealing assembly (51) are fixed on the outer side of the rotary motor (21).

2. The melting furnace stirring device according to claim 1, characterized in that: the rotary sealing assembly (51) comprises a sleeve (511) which covers the outer side of the stirring shaft (22), an end plate (512) which is fixed at one end of the sleeve (511) close to the rotary motor (21), and a container type mechanical sealing element (513) which is fixed on the end plate (512) and seals the stirring shaft (22).

3. The melting furnace stirring device according to claim 2, characterized in that: the rotary sealing assembly (51) comprises a mounting frame (521) arranged on one side of the support frame (3), and a sealing shaft sleeve (522) arranged on the mounting frame (521) and sleeved outside the sleeve (511), one side, close to the sleeve (511), of the sealing shaft sleeve (522) is provided with an annular sealing cavity (5221), sealing rings (5222) are arranged in the sealing cavity (5221) at intervals, and one side, far away from the connecting port (11), of the mounting frame (521) is provided with a locking assembly (53) for fixing the sleeve (511);

a lubricating component (54) connected with the sealing cavity (5221) is arranged on one side of the mounting frame (521);

and a pressure balance pipeline (55) is further arranged on the mounting frame (521), and two ends of the pressure balance pipeline (55) are respectively connected with the general preparation chamber (1) and the sealing cavity (5221).

4. A smelting furnace stirring apparatus according to claim 3, characterized in that: the locking assembly (53) comprises an annular cover plate (531) which is pressed on the sealing shaft sleeve (522), one side, close to the sealing cavity (5221), of the annular cover plate (531) extends downwards to form a convex rib (5311) which can abut against the inside of the sealing cavity (5221), and the annular cover plate (531) and the sealing shaft sleeve (522) are fixedly connected through bolts;

a locking plate (532) is covered on the upper side of the annular cover plate (531), and the locking plate (532), the sealing shaft sleeve (522) and the mounting frame (521) are fixedly connected through bolts; sealing rubber rings (533) are respectively arranged among the locking plate (532), the sealing shaft sleeve (522) and the mounting frame (521);

the upper side of lockplate (532) and the one side that is close to sleeve (511) has seted up seal groove (5321) be provided with two-way sealing ring (5322) in seal groove (5321) the lockplate is provided with lid and establishes locking ring (5323) on seal groove (5321).

5. A smelting furnace stirring apparatus according to claim 3, characterized in that: the pressure balance pipeline (55) is provided with an electromagnetic valve (551) for controlling the on-off of the pressure balance pipeline.

6. The melting furnace stirring device according to claim 4, characterized in that: the lubricating assembly (54) comprises an oil bottle (541) arranged on the locking plate (532), an oil pipe (542) is connected to the lower side of the oil bottle (541), the oil pipe (542) is communicated with a sealing cavity (5221), an oil ring (543) is arranged in the sealing cavity (5221) and between two adjacent sealing rings (5222), and a switch for controlling oil supply is arranged on the oil bottle (541);

a pressure pad (544) is arranged in the sealing cavity (5221) and on one side close to the annular cover plate (531), and the convex ribs (5311) are pressed on the pressure pad (544).

7. A smelting furnace stirring apparatus according to claim 3, characterized in that: an annular wear-resisting groove (5223) is formed in one end, close to the connecting port (11), of the sealing shaft sleeve (522), and a wear-resisting ring (5224) is arranged in the wear-resisting groove (5223).

8. The melting furnace stirring device according to claim 1, characterized in that: the support frame (3) is provided with an installation cylinder (31) in an extending manner at one side close to the connecting port (11), and a heat insulation layer (32) is arranged on the inner side of the installation cylinder (31).

9. The melting furnace stirring device according to claim 2, characterized in that: the lifting device (4) comprises a lifting motor (41) fixed on the support frame (3), a lead screw (42) which is connected with the lifting motor (41) and is vertically arranged, guide posts (43) which are fixed on the support frame (3) and are positioned at two sides of the rotating motor (21), and a supporting plate (44) used for fixing the rotating motor (21), wherein the supporting plate (44) is sleeved on the guide posts (43), one side close to the lead screw (42) is connected with a guide block (45), and the guide block (45) is sleeved on the lead screw (42); the supporting plate (44) and the end plate (512) are fixedly connected through a connecting screw rod.

10. The melting furnace stirring device according to claim 9, characterized in that: an upper travel switch (46) and a lower travel switch (47) are respectively arranged at two ends of the guide post (43), and when the guide post moves to the top or the bottom, the supporting plate (44) abuts against the upper travel switch (46) or the lower travel switch (47).