CN210262002U

CN210262002U - Powder feeder for repairing roller

Info

Publication number: CN210262002U
Application number: CN201921250765.5U
Authority: CN
Inventors: 常天鹏; 常清峰; 郭赛; 李晓晓
Original assignee: Handan City Handan Steel Attached Enterprise Lida Laser Technology Co Ltd
Current assignee: Handan City Handan Steel Attached Enterprise Lida Laser Technology Co Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-04-07
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a roll restoration is with sending whitewashed ware, including storing up the powder jar, store up powder tank top and install first step motor, first step motor output shaft installs the (mixing) shaft, install helical blade and last striker plate on the (mixing) shaft, store up powder tank bottom end seal is fixed with out the powder jar, store up powder tank bottom portion and open the feed opening that has three and play powder jar intercommunication, first step motor drive goes up the striker plate and seals two feed openings, it is fixed with second step motor to go out powder tank bottom end, second step motor drive lower striker plate seals two feed openings, it is totally closed to make three feed opening form one upper and lower end respectively, the upper end opening of another seals, another lower extreme confined structure. The utility model discloses avoid inert gas to let in and store up the powder jar, through setting up helical blade, carry out the stirring of pushing down to powder in the powder jar that stores up, make quantitative powder get into the feed opening fast, make the powder ration let in out the powder jar in the powder jar that stores up, inert gas sends out the powder by a powder mouth, improves and send the powder precision.

Description

Powder feeder for repairing roller

Technical Field

The utility model relates to a roll repair equipment technical field, especially a roll is restoreed and is used powder feeder.

Background

The rolls are the main equipment for rolling steel, and the quality of the rolls plays a very critical role in the quality and quantity of the produced steel. At the same time, the rolls are also consumable parts of the rolling mill. After the roller is used for a long time in a rolling way, the radius of the middle part of the roller is reduced, and pits are formed on the surface of the roller, which can seriously affect the quality of rolled steel. To extend the useful life of a roll, it is often necessary to repair the working surface of the roll.

In the laser cladding repair process, metal alloy powder is conveyed to a laser processing molten pool by a powder feeding device, and the powder conveying precision of the powder feeding device has a decisive role besides the quality of the powder. Therefore, the special powder feeding device for the laser cladding technology is one of the key technologies for ensuring the laser cladding quality.

The existing laser cladding powder feeder is a negative pressure type powder feeder, after pressure gas is introduced, the powder feeding rotary disc is driven to rotate through a servo motor, powder is taken out through a groove of the powder feeding rotary disc, and the powder is conveyed to a powder outlet through gas pressure difference.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem and designing a powder feeder for repairing a roller.

The technical scheme of the utility model is that the powder feeder for repairing the roller comprises a powder storage tank, wherein one side of the upper part of the powder storage tank is provided with a feed inlet, the feed inlet is provided with a feed cover, the feed cover is in threaded connection with the feed inlet, the top of the powder storage tank is provided with a first step motor, the output shaft of the first step motor extends into the powder storage tank and is provided with a stirring shaft through a coupler, the stirring shaft is provided with a helical blade, the bottom of the stirring shaft is fixedly provided with an upper baffle plate, the bottom of the powder storage tank is fixedly provided with a powder outlet tank in a sealing way, the bottom of the powder storage tank is provided with three feed openings communicated with the powder outlet tank, the feed openings are distributed along the axis of the stirring shaft in a circumferential way, the first step motor drives the upper baffle plate to rotate clockwise 120 degrees and simultaneously seal two feed openings, the bottom of the powder outlet tank is fixedly provided with, the second step motor output shaft stretches into in the powder outlet tank and installs down the striker plate, striker plate and last striker plate are the sector plate that the structure is the same down, striker plate interval clockwise rotation 120 degrees seals wherein two feed openings simultaneously under the drive of second step motor, makes three feed opening form respectively one by last striker plate and lower striker plate seal jointly, seal its opening upper end alone by last striker plate, another seal its structure of opening lower extreme alone by lower striker plate again, powder outlet tank both sides are equipped with symmetric distribution's inert gas air inlet and powder outlet.

The inner cavity of the powder outlet tank is a waist-shaped cavity.

The inner cavity at the lower part of the powder storage tank is a conical cavity.

And a sealing bearing is arranged at the center of the bottom of the powder outlet tank, and an output shaft of the second stepping motor is connected with an inner ring of the sealing bearing.

The utility model has the advantages that: through setting up the striker plate and lower striker plate, it is rotatory in turn with lower striker plate to go up the striker plate, make three feed opening form one respectively by last striker plate and lower striker plate seal jointly, another seal its opening upper end alone by last striker plate, another seal its structure of opening lower extreme alone by lower striker plate, avoid inert gas to let in and store up the powder jar, through setting up helical blade, the stirring is pushed down to powder in the powder jar stores up, make quantitative powder get into the feed opening fast, prevent the powder caking simultaneously, make powder ration let in the powder jar in store up, inert gas sends out the powder by a powder mouth, improve and send the powder precision.

Drawings

Fig. 1 is a schematic structural view of a powder feeder for roller repairing of the present invention;

FIG. 2 is a sectional view of the interior of the powder storage tank taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view of the interior of the powder outlet tank taken along line B-B of FIG. 1;

in the figure, 1, a powder storage tank; 2. a feed inlet; 3. a feeding cover; 4. a first stepper motor; 5. a stirring shaft; 6. a helical blade; 7. a material baffle plate is arranged; 8. a powder outlet tank; 9. a feeding port; 10. a second stepping motor; 11. a lower retainer plate; 12. an inert gas inlet; 13. a powder outlet; 14. and sealing the bearing.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings, as shown in fig. 1-3: a powder feeder for repairing a roller comprises a powder storage tank 1, a feed inlet 2 is arranged on one side of the upper portion of the powder storage tank 1, a feed cover 3 is installed at the position of the feed inlet 2, the feed cover 3 is in threaded connection with the feed inlet 2, a first stepping motor 4 is installed at the top of the powder storage tank 1, an output shaft of the first stepping motor 4 extends into the powder storage tank 1 and is provided with a stirring shaft 5 through a coupler, helical blades 6 are installed on the stirring shaft 5, an upper baffle plate 7 is fixedly installed at the bottom of the stirring shaft 5, a powder outlet tank 8 is fixed at the bottom of the powder storage tank 1 in a sealing manner, three feed openings 9 communicated with the powder outlet tank 8 are formed at the bottom of the powder storage tank 1, the feed openings 9 are circumferentially distributed along the axis of the stirring shaft 5, the first stepping motor 4 drives the upper baffle plate 7 to intermittently rotate clockwise by 120 degrees and simultaneously seals two feed openings 9, a second stepping motor 10 is fixed at the bottom end of the powder outlet tank 8, the lower material retaining plate 11 and the upper material retaining plate are sector plates with the same structure, the second stepping motor 10 drives the lower material retaining plate 11 to intermittently rotate clockwise by 120 degrees and simultaneously seal two of the blanking ports 9, so that three blanking ports 9 respectively form a structure that the upper material retaining plate 7 and the lower material retaining plate 11 jointly seal one blanking port, the upper material retaining plate 7 independently seals the upper end of the opening of the other blanking port, the lower material retaining plate 11 independently seals the lower end of the opening of the other blanking port, two sides of the powder outlet tank 8 are provided with an inert gas inlet 12 and a powder outlet 13 which are symmetrically distributed, the powder outlet 13 is used for receiving and sending a powder pipe, and the powder conveying pipe is further used for receiving and sending a powder head to feed materials.

The inner cavity of the powder outlet tank 8 is a waist-shaped cavity, so that the inert gas can conveniently send out the powder in the powder outlet tank 8 from the powder outlet 13.

The inner cavity at the lower part of the powder storage tank 1 is a conical cavity, so that powder at the lower part of the inner cavity of the powder storage tank 1 can be conveniently gathered at the feed opening 9.

A sealing bearing 14 is arranged at the center of the bottom of the powder outlet tank 8, and an output shaft of the second stepping motor 10 is connected with an inner ring of the sealing bearing 14. The seal bearing 12 plays a role of sealing, and prevents the powder in the powder outlet tank 8 from being discharged from the position where the output shaft of the second stepping motor 10 extends into the powder outlet tank 8.

The working principle of the embodiment is as follows: a controller is arranged outside the feeder and is electrically connected with the first stepping motor 4 and the second stepping motor 10, a powder feeding program is preset in the controller, when the controller is in an initial state, the upper baffle plate 7 blocks two of the feed openings 9, the two feed openings 9 blocked by the lower baffle plate 11 are overlapped with the two feed openings 9 blocked by the upper baffle plate 7, so that the three feed openings respectively form a structure that the upper baffle plate 7 and the lower baffle plate 11 are jointly closed, the upper baffle plate 7 independently closes the upper end of the opening of the structure, the lower baffle plate 11 independently closes the lower end of the opening of the structure, the lower baffle plate 11 independently closes the feed openings 9 with the lower end opening to contain powder, for the convenience of describing the working principle of the embodiment, the feed opening 9 containing powder is called as a first feed opening 9, the feed opening 9 independently closing the upper end opening by the upper baffle plate 7 is called as a second feed opening 9, the blanking port 9 with an opening closed by an upper material baffle 7 and a lower material baffle 11 is called as a third blanking port 9, a powder feeding program is started by a controller, a first stepping motor 4 is electrified to rotate clockwise by 120 degrees to drive a helical blade 6 and the upper material baffle 7 to rotate by 120 degrees, the upper material baffle 7 closes the upper end of the first blanking port 9, the upper material baffle 7 is far away from the third blanking port 9, powder in a powder storage tank 1 falls into the third blanking port 9 under the action of gravity and the helical blade 6, then a second stepping motor 10 rotates clockwise by 120 degrees rapidly to drive the lower material baffle 11 to rotate by 120 degrees, the lower material baffle 11 is far away from the first blanking port 9, the lower end of the first blanking port 9 is opened, the powder in the first blanking port 9 falls into a powder outlet tank 8 under the action of gravity, inert gas with pressure is continuously introduced into an inert gas inlet 12, and the inert gas carries the powder to be discharged from a powder outlet 13, at the moment, the upper baffle plate 7 seals the upper ends of the first feed opening 9 and the second feed opening 9, and the lower baffle plate 11 seals the lower ends of the second feed opening 9 and the third feed opening 9, so that inert gas cannot enter the powder storage tank 1;

the first stepping motor 10 and the second stepping motor 10 alternately and intermittently rotate, so that powder in the powder storage tank 1 quantitatively enters the powder outlet tank 8 from the three feed openings 9 one by one, the powder feeding precision is ensured, and the powder feeding is performed in such a circulating manner.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The powder feeder for repairing the roller comprises a powder storage tank (1) and is characterized in that a feed inlet (2) is arranged on one side of the upper portion of the powder storage tank (1), a feed cover (3) is installed at the position of the feed inlet (2), the feed cover (3) is in threaded connection with the feed inlet (2), a first stepping motor (4) is installed at the top of the powder storage tank (1), an output shaft of the first stepping motor (4) extends into the powder storage tank (1) and is provided with a stirring shaft (5) through a coupler, a spiral blade (6) is installed on the stirring shaft (5), an upper baffle plate (7) is fixedly installed at the bottom of the stirring shaft (5), a powder outlet tank (8) is fixedly arranged at the bottom end of the powder storage tank (1), three feed openings (9) communicated with the powder outlet tank (8) are formed in the bottom of the powder storage tank (1), and the feed openings (9) are distributed circumferentially along the axis of the stirring shaft (5, the first stepping motor (4) drives the upper material baffle plate (7) to intermittently rotate clockwise by 120 degrees and simultaneously seal two feed openings (9), a second stepping motor (10) is fixed at the bottom end of the powder outlet tank (8), an output shaft of the second stepping motor (10) extends into the powder outlet tank (8) and is provided with a lower retainer plate (11), the lower material retaining plate (11) and the upper material retaining plate are sector plates with the same structure, the second stepping motor (10) drives the lower material retaining plate (11) to intermittently rotate clockwise by 120 degrees and simultaneously seal two feed openings (9), so that the three feed openings (9) respectively form a structure that the upper material retaining plate (7) and the lower material retaining plate (11) are jointly sealed, the upper end of the opening of the structure is separately sealed by the upper material retaining plate (7), and the lower end of the opening of the structure is separately sealed by the lower material retaining plate (11), and inert gas inlets (12) and powder outlets (13) which are symmetrically distributed are arranged on two sides of the powder outlet tank (8).

2. The powder feeder for repairing the roller as claimed in claim 1, wherein the inner cavity of the powder outlet tank (8) is a waist-shaped cavity.

3. The powder feeder for repairing a roller according to claim 1, wherein the inner cavity at the lower part of the powder storage tank (1) is a conical cavity.

4. The powder feeder for repairing the roller as claimed in claim 1, wherein a sealed bearing (14) is installed at the center of the bottom of the powder outlet tank (8), and an output shaft of the second stepping motor (10) is connected with an inner ring of the sealed bearing (14).