CN211142175U

CN211142175U - Cold spraying aluminum powder supplementing device

Info

Publication number: CN211142175U
Application number: CN201921842638.4U
Authority: CN
Inventors: 余成有
Original assignee: Xiamen Baishun Xing Automation Technology Co ltd
Current assignee: Xiamen Baishun Xing Automation Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-31
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a cold aluminium powder supplementary device that spouts, wherein, cold aluminium powder supplementary device that spouts includes that feed bin and intermittent type formula aluminite powder add the mechanism, through balanced trachea intercommunication between the powder feeder of feed bin and cold device that spouts, and have than the powder feeder is the capacity that is far greater, intermittent type formula aluminite powder add the feed inlet of mechanism with the feed opening intercommunication of feed bin, the discharge gate with powder feeder intercommunication for add the aluminite powder in the feed bin regularly and quantitatively in the powder feeder. The utility model discloses a set up feed bin and clearance formula aluminite powder of large capacity and add the mechanism, can supplement the aluminite powder to the powder feeder regularly and quantitatively, prolonged the continuous operation time of cold device of spouting greatly, improved production efficiency.

Description

Cold spraying aluminum powder supplementing device

Technical Field

The utility model belongs to cold equipment field that spouts specifically relates to a cold aluminium powder that spouts supplyes device.

Background

Cold spraying is a new and advanced surface coating technology developed from thermal spraying technology. The cold spraying is based on the aerodynamic and high-speed collision dynamics principle, firstly, high-pressure gas is introduced into a contraction-expansion Laval nozzle, supersonic flow is generated after the gas flows through the throat part of the nozzle, then powder conveying gas is used for conveying spraying powder into airflow from the upstream of the nozzle along the axial direction, powder particles are accelerated to the high speed of more than 300-1200 m/s through the whole nozzle to form high-speed particle flow, and the high-speed particle flow collides with a substrate to generate severe plastic deformation so as to deposit and form a coating. In the process, the working gas is usually preheated, and the temperature is generally 100-800 ℃ according to different spraying materials, but is far lower than the melting point of the spraying materials. Because the spraying process adopts relatively low temperature, adverse effects such as oxidation (aiming at metal materials), phase change, decomposition, chemical reaction, grain growth (aiming at nano-structure materials) and the like in the thermal spraying process can be avoided. At present, cold spray technology has been successfully used to prepare most pure metals, alloys, metal matrix composites, nanostructured metal coatings or blocks, and the like.

The aluminum powder has the characteristics of light weight, high viscosity and easy agglomeration, so the capacity of the powder feeder is relatively small, generally about 2 kilograms, the usable time is limited, the working pressure of a cold spraying device is generally between 3.5 and 6MPa, and the pressure is very high. For safety reasons, the powder feed to the powder feeder is usually carried out in a shut-down state. And each time the powder adding is stopped, the temperature is required to be reduced from the working temperature (generally above 500 ℃) to below 100 ℃, which probably needs 10 minutes, and the temperature is increased to the working temperature after the powder adding is finished, which also needs about 10 minutes, so that the whole powder adding process needs at least 20 minutes, the production continuity is poor, and the working efficiency is low.

Disclosure of Invention

The utility model aims at providing a cold spraying aluminum powder supplementary device to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:

according to the embodiment of the utility model provides a cold aluminium powder that spouts supplementary device, wherein, cold aluminium powder that spouts supplementary device includes that feed bin and intermittent type formula aluminite powder add the mechanism, through balanced trachea intercommunication between the powder feeder of feed bin and cold device that spouts, and have than send the powder feeder capacity that is much bigger, intermittent type formula aluminite powder add the feed inlet of mechanism with the feed opening intercommunication of feed bin, the discharge gate with send powder feeder intercommunication for add the aluminite powder in the feed bin into regularly and quantitatively in sending the powder feeder.

Further, the intermittent aluminum powder adding mechanism comprises a feeding pipe, a limiting seat, a feeding plate and a linear reciprocating motion driving device, wherein one end of the feeding pipe is provided with the discharge port, the other end of the feeding pipe is sealed, a rectangular axial through groove leading to the powder feeder is arranged in the feeding pipe, the feeding port is arranged on the peripheral wall of the feeding pipe and communicated with the rectangular axial through groove, the limiting seat is arranged on the rectangular axial through groove right below the feeding port and provided with a cavity aligned and communicated with the feeding port, the feeding plate is slidably arranged on the rectangular axial channel, the upper surface of the feeding plate is tightly attached to the lower edge of the limiting seat, the lower surface of the feeding plate is tightly attached to the bottom of the rectangular axial through groove, a through hole is arranged at the tail end of the feeding plate, and a driving rod of the linear reciprocating motion driving device penetrates through the sealing end, so that the through hole of the feeding plate can reciprocate between a feeding position and a discharging position, the through hole contains aluminum powder at the feeding position, and the aluminum powder is pushed into the powder feeder by the feeding plate at the discharging position.

Furthermore, the intermittent aluminum powder adding mechanism further comprises a positioning seat and a mounting groove, the positioning seat is inserted in the feeding hole, the limiting seat is fixedly mounted on the mounting groove from the upper side, the mounting groove is fixedly mounted in the rectangular axial through groove, the feeding plate is slidably mounted on the mounting groove, the upper surface of the feeding plate is tightly attached to the lower edge of the limiting seat, and the lower surface of the feeding plate is tightly attached to the bottom of the mounting groove.

Further, the limiting seat is T-shaped, two side walls of the installation groove are provided with notches, the transverse part of the limiting seat is received in the notches, and the width of the vertical part is substantially equal to the groove width of the installation groove.

Further, the linear reciprocating motion driving device is an electric linear reciprocating motion driving device.

Further, electrodynamic type straight reciprocating motion drive arrangement includes motor, reduction gear and crank link mechanism, the motor with the reduction gear drive is connected, crank link mechanism one end with the reduction gear drive is connected, the other end with the delivery sheet drive is connected.

Further, the crank link mechanism comprises a rotary disc, a connecting rod and a driving rod, the rotary disc is fixedly installed on a rotating shaft of the speed reducer, one end of the connecting rod is hinged to the rotary disc, the other end of the connecting rod is hinged to the driving rod, the driving rod is movably arranged in the feeding pipe in a penetrating mode through a sealing element, and the tail end of the driving rod is fixedly connected to the end portion of the feeding plate.

Further, the motor is a servo motor so as to be convenient to control.

Further, a vibrating device is installed on a feed opening of the storage bin.

The utility model adopts the above technical scheme, the beneficial effect who has is: the utility model discloses a set up feed bin and clearance formula aluminite powder of large capacity and add the mechanism, can supplement the aluminite powder to the powder feeder regularly and quantitatively, prolonged the continuous operation time of cold device of spouting greatly, improved production efficiency.

Drawings

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Fig. 1 is a perspective view of a cold spray aluminum powder replenishing device according to an embodiment of the present invention;

fig. 2 is another perspective view of the cold sprayed aluminum powder replenishing apparatus shown in fig. 1.

FIG. 3 is a partial perspective view of an intermittent aluminum powder adding mechanism of the cold spray aluminum powder replenishing apparatus shown in FIG. 1;

fig. 4 is an exploded view of the batch-type aluminum powder adding mechanism shown in fig. 2;

FIG. 5 is a plan view of the intermittent aluminum powder adding mechanism shown in FIG. 2;

fig. 6 is a sectional view of the intermittent aluminum powder adding mechanism taken along line a-a of fig. 5;

fig. 7 is a sectional view of the intermittent aluminum powder adding mechanism in the feeding position;

fig. 8 is a sectional view of the intermittent aluminum powder adding mechanism in the discharging position.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 and 2, a cold sprayed aluminum powder replenishing apparatus may include a hopper 1 and a batch type aluminum powder adding mechanism 2, the hopper 1 and the batch type aluminum powder adding mechanism 2 being generally installed on a steel structure. The bin 1 is communicated with the powder feeder 100 of the cold spraying device through the balance air pipe 3, so that the air pressure between the bin and the powder feeder is the same. The silo 1 is generally made of a stainless steel plate having a certain thickness to be able to withstand high pressure (i.e., the operating pressure of the cold spray device). The silo 1 typically has a much larger capacity than the powder feeder 100, e.g. more than 10 times. The feeding port 21 of the intermittent aluminum powder adding mechanism 2 is communicated with the discharging port 11 of the silo 1, and the discharging port 22 is communicated with the powder feeder 100, and is used for adding the aluminum powder in the silo 1 into the powder feeder 100 regularly and quantitatively, for example, 5g of aluminum powder is fed every 1 second. It should be understood that the time interval and amount of the aluminum powder addition can be set according to actual process conditions. Since the aluminum powder of the bin 1 is continuously supplemented into the powder feeder 100, the continuous working time of the cold spraying device can be greatly increased, and therefore, the production efficiency is greatly improved. The structure of the powder feeder 100 is well known and will not be described here. The specific structure of the batch-type aluminum powder addition mechanism will be described in detail below.

As shown in fig. 1 to 6, the intermittent aluminum powder adding mechanism 2 may include a feeding pipe 23, a limiting seat 24, a feeding plate 25, a positioning seat 26, a mounting groove 27, and a linear reciprocating motion driving device 28. The feed port 21 is provided on the peripheral wall of the feed pipe 23, and the discharge port 22 is provided on the end of the feed pipe 23 communicating with the powder feeder 100. The feed inlet 21 is fixedly connected with the feed outlet 11 of the silo 1 through a corresponding flange in a sealing way. The feed tube 23 communicates at one end with the powder feeder 100 and at the other end is sealed by a corresponding flange 29 and seal (not shown) in which a rectangular axial through slot 231 is provided leading to the powder feeder 100. The positioning seat 26 is cylindrical and has a flange surface at its upper end. The positioning socket 26 is inserted into the feed opening 21 and is fixedly connected to the feed opening 21 and the flange of the discharge opening 11 of the silo 1 by its flange surface. The lower end of the positioning seat 26 abuts against the stopper seat 24, that is, the stopper seat 24 is fixedly mounted on the mounting groove 27 from above. It should be understood that the positioning seat 26 may be omitted, that is, the position-limiting seat 24 is fixedly mounted on the mounting groove 27 by other means. The limiting seat 24 is T-shaped and comprises a transverse part and a vertical part. The vertical portion has a vertical through hole which is in aligned communication with the feed port 21. The mounting groove 27 is fixedly mounted in the rectangular axial through groove 231, and has a length identical to that of the rectangular axial through groove 231. Both side walls of the mounting groove 27 have notches 271. Thus, the stopper seat 24 can be fixedly mounted on the mounting groove 27 by receiving a lateral portion thereof in the notch 271. The width of the vertical portion of the stopper seat 24 is substantially equal to the width of the mounting groove 27. The feeding plate 25 is slidably mounted on the mounting groove 27, and has an upper surface closely attached to the lower edge of the stopper seat 24 (specifically, the vertical portion) and a lower surface closely attached to the bottom of the mounting groove 27. The feeding plate 25 has a through hole 251 near the end, and the through hole 251 is used for receiving aluminum powder. The volume of the through hole 251 can be set according to actual needs. The shape of the through-hole 251 may be square or circular, etc. In the illustrated embodiment, the upper surface of the feed plate 25 is convex on both sides. It should be understood that the upper surface of the feed plate 25 may also be planar. The driving rod 285 of the linear reciprocating motion driving device 28 passes through the sealed end of the feeding pipe 23 and is fixedly connected with the feeding plate 25, so that the through hole 251 of the feeding plate 25 can reciprocate between a feeding position and a discharging position; wherein, at the feed position, the through-hole 251 is located under the vertical through-hole of spacing seat for the aluminium powder can fall into in the through-hole 251, and the through-hole 251 holds the aluminium powder promptly, and at discharge position, because the through-hole 251 leaves mounting groove 27, therefore the aluminium powder in the through-hole 251 can fall into powder feeder 100, and the aluminium powder is pushed to the powder feeder by the delivery sheet 25 promptly.

It should be understood that the mounting slot 27 may be omitted, i.e. both the stopper seat 24 and the feeder plate 25 are mounted directly on the rectangular axial channel 231 of the feeder tube 23. In this case, the upper surface of the feeding plate 25 abuts against the lower edge of the stopper seat 24, and the lower surface abuts against the bottom of the rectangular axial through groove 231. That is, the aluminum powder of the through-hole is supported by the rectangular axial through-groove 231.

In the present embodiment, the linear reciprocating drive device 28 is an electric linear reciprocating drive device. Specifically, the electric linear reciprocating motion driving device includes a motor 281, a decelerator 282, a dial 283, a link 284, and a driving lever 285. The motor 281 is in driving connection with a speed reducer 282. Preferably, the motor 281 is a servo motor for easy control. The rotary plate 283 is fixedly arranged on the rotating shaft of the speed reducer 282, one end of the connecting rod 284 is hinged on the rotary plate 283, the other end is hinged with the driving rod 285, the driving rod 285 is movably arranged in the feeding pipe 23 in a penetrating way through a sealing element, and the tail end of the driving rod is fixedly connected with the end part of the feeding plate 25. The dial 283, the link 284, and the drive lever 285 constitute a crank link mechanism.

It should be understood that the linear reciprocating drive 28 may also be pneumatic; the structure of the electric linear reciprocating drive device is not limited to the illustrated structure.

Furthermore, a vibration device (not shown) can be mounted on the feed opening 11 of the silo 1. Through the vibration effect of the vibration device, the aluminum powder can be ensured not to block the feed opening.

The working principle of the cold spraying aluminum powder supplementing device of the present invention is briefly described below. The motor 281 rotates to drive the driving rod 285 to reciprocate, so as to drive the feeding plate 25 to reciprocate, when the through hole 251 of the feeding plate 25 moves to the feeding position, as shown in fig. 7, the aluminum powder in the bin 1 falls into the through hole 251 through the feeding hole, the positioning seat 26 and the limiting seat 25, and when the through hole 251 of the feeding plate 25 moves to the discharging position (i.e., leaves the feeding pipe), as shown in fig. 8, the aluminum powder in the through hole 251 falls into the powder feeder 100; the aluminum powder is supplemented at regular time and quantity by the reciprocating motion of the feeding plate 25, the continuous working time of the cold spraying device is greatly prolonged, and the production efficiency is improved.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The cold aluminum powder spraying supplementing device is characterized by comprising a storage bin and an intermittent aluminum powder adding mechanism, wherein the storage bin is communicated with a powder feeder of the cold aluminum powder spraying device through a balance air pipe and has a capacity much larger than that of the powder feeder, a feeding hole of the intermittent aluminum powder adding mechanism is communicated with a discharging hole of the storage bin, and a discharging hole is communicated with the powder feeder and is used for adding aluminum powder in the storage bin into the powder feeder regularly and quantitatively.

2. The cold spray aluminum powder supplementing device of claim 1, wherein the intermittent aluminum powder adding mechanism comprises a feeding pipe, a limiting seat, a feeding plate and a linear reciprocating motion driving device, the feeding pipe is provided with the discharge port at one end and sealed at the other end, a rectangular axial through groove leading to the powder feeder is arranged in the feeding pipe, the feeding port is arranged on the peripheral wall of the feeding pipe and communicated with the rectangular axial through groove, the limiting seat is arranged on the rectangular axial through groove right below the feeding port and provided with a cavity aligned and communicated with the feeding port, the feeding plate is slidably arranged on the rectangular axial channel, the upper surface of the feeding plate is tightly attached to the lower edge of the limiting seat, the lower surface of the feeding plate is tightly attached to the bottom of the rectangular axial through groove, a through hole is arranged at the tail end of the feeding pipe, and a driving rod of the linear reciprocating motion driving device passes through the sealed end of the feeding pipe and is fixedly connected, so that the through hole of the feeding plate can reciprocate between a feeding position and a discharging position, the through hole contains aluminum powder at the feeding position, and the aluminum powder is pushed into the powder feeder by the feeding plate at the discharging position.

3. The cold aluminum powder spraying supplementing device of claim 2, wherein the intermittent aluminum powder adding mechanism further comprises a positioning seat and a mounting groove, the positioning seat is inserted into the feeding hole and fixedly mounts the limiting seat on the mounting groove from above, the mounting groove is fixedly mounted in the rectangular axial through groove, the feeding plate is slidably mounted on the mounting groove, the upper surface of the feeding plate is tightly attached to the lower edge of the limiting seat, and the lower surface of the feeding plate is tightly attached to the bottom of the mounting groove.

4. The cold sprayed aluminum powder replenishing device of claim 3, wherein the stopper seat is T-shaped, both side walls of the installation groove are provided with notches, the transverse portion of the stopper seat is received in the notches, and the width of the vertical portion is substantially equal to the groove width of the installation groove.

5. The cold sprayed aluminum powder replenishing apparatus of claim 2, wherein the linear reciprocating driving means is an electric linear reciprocating driving means.

6. The cold spray aluminum powder supplementing device of claim 5, wherein the electric linear reciprocating motion driving device comprises a motor, a speed reducer and a crank link mechanism, the motor is in driving connection with the speed reducer, one end of the crank link mechanism is in driving connection with the speed reducer, and the other end of the crank link mechanism is in driving connection with the feeding plate.

7. The cold spray aluminum powder supplementing device of claim 6, wherein the crank-link mechanism comprises a rotary disc, a link rod and a driving rod, the rotary disc is fixedly installed on a rotating shaft of the speed reducer, one end of the link rod is hinged to the rotary disc, the other end of the link rod is hinged to the driving rod, the driving rod is movably arranged in the feeding pipe in a penetrating mode through a sealing element, and the tail end of the driving rod is fixedly connected to the end portion of the feeding plate.

8. The cold sprayed aluminum powder replenishing device of claim 6, wherein the motor is a servo motor.

9. The cold sprayed aluminum powder replenishing device of claim 2, wherein a vibrating device is installed on a feed opening of the bin.