WO2020151409A1

WO2020151409A1 - Slag dredging mechanism

Info

Publication number: WO2020151409A1
Application number: PCT/CN2019/125849
Authority: WO
Inventors: 盛镝; 丛志刚
Original assignee: 烟台盛利达工程技术有限公司
Priority date: 2019-01-25
Filing date: 2019-12-17
Publication date: 2020-07-30
Also published as: CN209502962U

Abstract

A slag dredging mechanism, comprising a body and a rotating shaft (2) vertically mounted on the body, and further comprising a slag rake (1) used for connecting with the rotating shaft. A top portion of the slag rake is provided with a connecting shaft (1-1), the cross-sectional shape of the connecting shaft is polygonal, and a bottom portion of the rotating shaft is provided with a connecting hole that matches the connecting shaft; a horizontal first pin hole is also provided on the rotating shaft, and the first pin hole penetrates the connecting hole; a horizontal second pin hole corresponding to the position of the first pin hole is provided on the connecting shaft; and the slag dredging mechanism further comprises a mounting pin (3) which penetrates the first pin hole and the second pin hole so as to achieve the connection between the slag rake and the rotating shaft. The present slag dredging mechanism employs the connection manner of a shaft hole matching a mounting pin to replace a traditional bolt connection, which not only improves the bearing capacity and reliability of the connection, but also simplifies installation and disassembly operations.

Description

Slag removal mechanism

Technical field

The utility model relates to a slag removing mechanism for removing slag from molten metal.

Background technique

Rotary slag rake slag removal mechanism is one of the common slag removal mechanisms. Its structure is as follows: two sets of vertical synchronous and counter-rotating rotating shafts are arranged on the body, and the lower end of each rotating shaft is installed for slag removal Two sets of slag rakes are arranged oppositely. When removing slag, the two sets of slag rakes rotate backward to open. After the slag rake is immersed in the molten metal, the slag rake rotates forward to close and accumulate the slag, and then the slag removal mechanism is lifted and moved to remove the slag to the target area. Open to release the dross.

In the prior art, the slag rake and the rotating shaft are connected by bolts. The disadvantage is that the torque carried by the slag rake is relatively large, the bolts are easily loosened, and the bolt installation and disassembly operations are complicated.

technical problem

The utility model proposes a slag removal mechanism, whose purpose is to improve the reliability of the connection between the slag rake and the rotary shaft and the convenience of disassembly and assembly.

Technical solutions

The technical scheme of the utility model is as follows:

A slag removal mechanism includes a main body and a rotating shaft vertically installed on the main body, and further includes a slag harrow for connecting with the rotating shaft. A connecting shaft is provided on the top of the slag rake, and the section of the connecting shaft The shape is a polygon, and the bottom of the rotary shaft is provided with a connecting hole that matches with the connecting shaft;

The rotary shaft is also provided with a horizontal first pin hole, and the first pin hole penetrates the connecting hole;

The connecting shaft is provided with a horizontal second pin hole corresponding to the position of the first pin hole;

The slag removal mechanism further includes a mounting pin that passes through the first pin hole and the second pin hole to realize the connection between the slag rake and the rotating shaft.

As a further improvement of the device: the connecting shaft is a tapered shaft, and the connecting hole is a tapered hole that coincides with the connecting shaft.

As a further improvement of the device: the cross-sectional shape of the mounting pin is a rectangle with a height greater than a width.

As a further improvement of the device: the bottom surface of the first pin hole is a first inclined surface, the bottom surface of the mounting pin is a second inclined surface that is in contact with the first inclined surface; the top surface of the mounting pin is in contact with the The top surface of the second pin hole is in contact.

As a further improvement of the device: a third pin hole is opened at the thinner end of the mounting pin, the third pin hole is perpendicular to the mounting pin, and a locking pin is installed in the third pin hole.

As a further improvement of the device: the number of the third pin holes is more than two groups, arranged along the length direction of the mounting pin.

As a further improvement of the device: the slag rake is divided into two groups, and bumps are installed on the outer surface of one group of slag rake.

As a further improvement of the device: the outer side of the rear part of the slag harrow is also fixedly connected with a vertical baffle, and the baffle is located on the rear side below the connecting shaft.

As a further improvement of the device: the cross-sectional shape of the connecting shaft is square.

Beneficial effect

Compared with the prior art, the utility model has the following positive effects: (1) The utility model adopts the connection method of shaft hole and mounting pin to replace the traditional bolt connection, which not only improves the bearing capacity and reliability of the connection, but also simplifies (2) The connecting shaft adopts a tapered structure, which is convenient for disassembly and assembly. Further, the mounting pin is improved into a wedge block structure, so that the connecting shaft can be lifted up when the mounting pin is squeezed to ensure that the tapered surface is always in contact , To further improve the torque carrying capacity; (3) The locking pin structure prevents the mounting pin from falling off, and further, by setting multiple sets of pin holes, the position of the locking pin is adjusted to prevent the mounting pin from loosening after wear; (4) Increase the bumper structure to move the collision point during vibration slag removal to a position away from the axis, which improves the slag removal effect; (5) Increase the baffle mechanism, when the slag rake is opened to a state of 180 to 200 degrees, It can block the gap between the slag rake and prevent the dregs from leaking from the gap to the rear of the slag rake.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Figure 2 is a top view of the slag rake part.

Figure 3 is a left view of the slag rake part.

Figure 4 is a top view of the two slag rakes opened.

Embodiments of the invention

The technical scheme of the utility model will be described in detail below in conjunction with the drawings:

As shown in Figures 1 to 3, a slag removal mechanism includes a main body and a rotating shaft 2 vertically mounted on the main body. The rotating shaft 2 can rotate relative to the main body. It also includes a slag harrow for connecting with the rotating shaft 2 1.

Generally, the slag rake 1 is two groups arranged opposite to each other, and the rotary shaft 2 drives the slag rake 1 to rotate under the drive of a driving device such as a hydraulic motor and a motor.

When removing slag, the two groups of slag rakes 1 rotate backward to be open. After the slag rake 1 is immersed in the molten metal, the slag rake 1 rotates forward to close and accumulate slag, and then the slag removal mechanism is lifted and moved to remove the slag to the target area. The slag rake 1 is opened again to release the scum. Generally, the slag rake 1 needs to be opened to the maximum angle for multiple collisions, and the slag is removed by vibration.

The connecting mechanism between the slag harrow 1 and the connecting shaft 1-1 is:

The top of the slag harrow 1 is provided with a connecting shaft 1-1, the cross-sectional shape of the connecting shaft 1-1 is polygonal, and the bottom of the rotating shaft 2 is provided with a connecting hole matching the connecting shaft 1-1.

Preferably, the cross-sectional shape of the connecting shaft 1-1 is square, which is convenient for processing. It may also have other shapes such as a hexagon.

The rotating shaft 2 is also provided with a horizontal first pin hole, and the first pin hole is connected with the connecting hole;

The connecting shaft 1-1 is provided with a horizontal second pin hole corresponding to the position of the first pin hole.

The slag removal mechanism further includes a mounting pin 3, after the connecting shaft 1-1 is inserted into the connecting hole, the mounting pin 3 is inserted into the first pin hole and the second pin hole to realize the slag rake 1 and the rotating shaft 2 the connection between.

The torque borne by the slag harrow 1 is mainly carried by the square shaft hole. The function of the mounting pin 3 is to carry the gravity of the slag rake 1, so its cross-sectional shape is preferably a rectangle with a height greater than its width.

Preferably, the connecting shaft 1-1 is a tapered shaft that tapers from the bottom to the top, the connecting hole is a tapered hole that coincides with the connecting shaft 1-1, and the tapered structure can make the connecting shaft 1-1 loading and unloading is more convenient.

Further, the mounting pin 3 may be designed in a wedge shape: the bottom surface of the first pin hole is a first inclined surface, and the bottom surface of the mounting pin 3 is a second inclined surface in contact with the first inclined surface; The top surface of the pin 3 is in contact with the top surface of the second pin hole. After inserting the mounting pin 3, squeeze from the big end inward, under the action of the inclined surface, the top surface of the mounting pin 3 pushes the connecting shaft 1-1 upwards until the tapered surface between the connecting shaft 1-1 and the connecting hole is in full contact .

Further, a third pin hole is formed at the thinner end of the mounting pin 3, and the third pin hole is perpendicular to the mounting pin 3, and a locking pin 4 is installed in the third pin hole. By inserting the locking pin 4, the mounting pin 3 can be prevented from falling off.

After many times of disassembly and assembly, the mounting pin 3 will wear out. Inserting the locking pin 4 into the original position cannot prevent the mounting pin 3 from still being loose, and it cannot guarantee the complete contact of the cone surface. In order to solve this problem, the number of the third pin holes is set to be more than two groups, arranged along the length direction of the mounting pin 3. After the mounting pin 3 is worn, the locking pin 4 is moved to the big end and inserted into the pin hole. Make sure that the cone surfaces are in full contact.

In some cases, it is necessary to remove the slag while removing the slag. After the two slag rakes 1 are opened to 180 to 200 degrees, they are pushed forward on the molten metal surface, and then closed. During the advancing process, the dross easily leaks from the gap between the two slag rakes 1 to the rear side of the slag rake 1. In order to solve this problem, a vertical baffle 6 is fixedly connected to the outer side of the rear part of the slag rake 1, and the baffle 6 is located on the rear side below the connecting shaft 1-1, and the baffle 6 is arranged obliquely with respect to the front and rear direction. When the slag rake 1 is opened and pushed forward, the baffle 6 blocks the gap in the middle to prevent the slag from leaking to the rear side.

On the other hand, bumpers 5 are also installed on the outer surface of one group of slag rake 1. When there is no bumper 5, when the two slag rakes 1 are opened to the maximum angle for collision and slag removal, the roots of the two slag rakes 1 will first contact and collide. The position is relatively close to the axis, and the impact vibration effect is not ideal. After the raised bumper 5 is added, the collision point can be moved to a position away from the axis, and the effect of vibration slag removal is greatly improved.

Claims

A slag removal mechanism includes a main body and a rotating shaft (2) vertically installed on the main body, and also includes a slag harrow (1) for connecting with the rotating shaft (2), and is characterized in that: The top of the rake (1) is provided with a connecting shaft (1-1), the cross-sectional shape of the connecting shaft (1-1) is polygonal, and the bottom of the rotating shaft (2) is provided with the connecting shaft (1-1) Matching connection holes;

The rotary shaft (2) is also provided with a horizontal first pin hole, and the first pin hole is connected to the connecting hole;

The connecting shaft (1-1) is provided with a horizontal second pin hole corresponding to the position of the first pin hole;

The slag removal mechanism also includes a mounting pin (3) that passes through the first pin hole and the second pin hole to realize the connection between the slag rake (1) and the rotating shaft (2) .
The slag removal mechanism according to claim 1, characterized in that: the connecting shaft (1-1) is a tapered shaft, and the connecting hole is a tapered hole that coincides with the connecting shaft (1-1) .
The slag removal mechanism according to claim 1, characterized in that: the cross-sectional shape of the mounting pin (3) is a rectangle with a height greater than a width.
The slag removal mechanism according to claim 1, characterized in that: the bottom surface of the first pin hole is a first inclined surface, and the bottom surface of the mounting pin (3) is a second inclined surface in contact with the first inclined surface ; The top surface of the mounting pin (3) is in contact with the top surface of the second pin hole.
The slag removal mechanism according to claim 4, characterized in that: a third pin hole is opened at the thinner end of the mounting pin (3), and the third pin hole is perpendicular to the mounting pin (3), so A locking pin (4) is installed in the third pin hole.
The slag removal mechanism according to claim 5, characterized in that: the number of the third pin holes is more than two groups, arranged along the length direction of the mounting pin (3).
The slag removal mechanism according to claim 1, characterized in that: the slag rake (1) is in two groups, and bumps (5) are installed on the outer surface of one group of slag rake (1).
The slag removal mechanism according to claim 1, characterized in that: the outer surface of the rear part of the slag rake (1) is also fixedly connected with a vertical baffle (6), and the baffle (6) is located on the connecting shaft. (1-1) Lower back side.
The slag removal mechanism according to any one of claims 1 to 8, wherein the cross-sectional shape of the connecting shaft (1-1) is square.