CN114395760B

CN114395760B - Cold spraying powder feeding system

Info

Publication number: CN114395760B
Application number: CN202210291674.6A
Authority: CN
Inventors: 卢静; 路腾; 解路; 吴应东; 陈东; 孙澄川; 杨莎莎
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-05-24
Anticipated expiration: 2042-03-24
Also published as: CN114395760A

Abstract

The present disclosure relates to the field of cold spray technology, and more particularly, to a cold spray powder feeding system including a powder feeder, a powder collecting device, a powder amount measuring device, a cold spray gun, and a gas transporting unit. The powder feeder comprises a powder feeder main body, a powder dropping barrel and a powder transfer device, so that the powder feeder can convey light or heavy powder; the powder collecting device comprises a powder collecting barrel and a vulcanizing plate, and the vulcanizing plate is arranged in the powder collecting barrel to filter and collect the powder output by the powder feeder; the powder amount measuring device measures the weight of the powder collected by the powder collecting device; the gas transportation part is responsible for connecting each part of cold spraying powder feeding system, makes the powder feeder realize transporting light or heavy powder to the cold spraying rifle through valve control and carry out the spraying or send to the powder collection device and collect the back and carry out the powder feeding volume through powder volume measuring device and measure. The cold spraying powder feeding system of the present disclosure provides a transportation mode of multiple types of powder, and can be suitable for the transportation of different types of powder.

Description

Cold spraying powder feeding system

Technical Field

The disclosure relates to the technical field of cold spraying processes, in particular to a cold spraying powder feeding system.

Background

Cold spraying is used as a new material surface modification technology, powder is sprayed onto a substrate by gas-solid two-phase flow at normal temperature or lower temperature to form a compact coating, and the spraying on the surfaces of some non-heat-resistant or limited heat-resistant materials which is difficult to realize by hot spraying can be realized.

In a cold spray system, a powder feeder is used as a powder storage and conveying device, and the powder feeding uniformity and continuity of the powder feeder are important factors influencing the surface performance of a coating.

The existing powder feeder can only realize the same type of powder conveying, for example, two kinds of powder classified according to the weight can only convey light-weight powder or heavy-weight powder, and the powder feeding type is single.

For example, when a powder feeder for a powder having a heavy weight and a large particle diameter conveys a powder having a light weight and a small particle diameter, the problems of uneven powder feeding and difficulty in controlling the powder feeding amount tend to occur. The powder feeder for the powder with light weight and small particle size has the problems of small powder feeding amount and powder feeding blockage when the powder with heavy weight and large particle size is conveyed.

Disclosure of Invention

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a cold spray powder feeding system that can be adapted to different types of powder to be fed.

Cold spray powder feed system, including the powder feeder, the powder feeder includes: the powder feeder comprises a powder feeder body, a powder dropping barrel and a powder transfer device, wherein the powder feeder body is provided with a powder storage cavity and a powder feeding cavity, and the powder storage cavity is used for storing light powder or heavy powder;

the powder falling barrel is provided with a ventilation passage communicated with the powder storage cavity and the powder feeding cavity;

the powder transfer device comprises a filter disc, a driving device and a powder scraping plate, the filter disc is arranged in the ventilation passage to separate the powder feeder main body from the powder dropping barrel, and the driving device drives the powder scraping plate to rotate so as to transfer light or heavy powder falling from the powder storage cavity onto the filter disc to the bottom of the powder feeding cavity from the bottom of the powder storage cavity;

gas is introduced into the ventilation passage to drive the light powder on the filter disc to be sent out through the powder feeding cavity; or the heavy powder in the ventilation passage is driven to pass through the filter disc and is sent out through the powder falling barrel.

Optionally, the powder feeder main body is provided with a first inlet and a first outlet which are communicated with the powder storage cavity, and the powder feeder main body is also provided with a second inlet and a second outlet which are communicated with the powder feeding cavity;

the powder falling barrel is provided with a powder groove, a third inlet and a third outlet which are communicated with the powder groove, and the powder groove is communicated with the ventilation passage;

gas is introduced into the first inlet to balance the air pressure in the powder storage cavity, so that light or heavy powder in the powder storage cavity normally falls from the first outlet;

gas is introduced into the third inlet so that the gas is introduced into the ventilation passage to drive the light powder on the filter disc to enter the second outlet from the second inlet of the powder storage cavity and to be sent out; or the second outlet is filled with gas so that the gas is filled into the ventilation passage to drive the heavy powder to pass through the filter disc to the third outlet of the powder falling barrel and be sent out.

Optionally, the filter sheet comprises a closed portion and an opening portion;

the seal sets up in the bottom of storing up the powder cavity, and trompil portion sets up in the bottom of sending the powder cavity, drive arrangement drives and scrapes the rotation of powder board to make the light or the heavy powder of storing up the powder cavity shift to trompil portion from the seal.

Optionally, the powder feeder main body comprises a powder feeder end cover, a powder feeder shell and a powder blocking plate, the powder feeder end cover is connected with the powder feeder shell in a sealing mode, a notch is formed in the inner wall of the powder feeder shell, and the powder blocking plate is arranged in the notch to divide the inside of the powder feeder main body into a powder storage cavity and a powder feeding cavity.

Optionally, the inner wall of the powder dropping barrel is arc-shaped, so that powder in the powder dropping barrel is collected in the powder groove.

Optionally, the cold spraying powder feeding system further comprises a gas transportation part and a cold spraying gun, wherein the gas transportation part comprises a gas input part and a gas output part, the gas input part is connected to the powder feeder to input gas to the powder feeder, and the powder feeder is connected to the cold spraying gun through the gas output part to spray light or heavy powder outwards through the cold spraying gun.

Optionally, the cold spraying powder feeding system further comprises a powder collecting device, and the powder feeder is connected to the powder collecting device through a gas output part so as to input light or heavy powder to the powder collecting device for collection.

Optionally, the powder collecting device includes a powder collecting barrel and a vulcanization plate, the powder collecting barrel is provided with a powder inlet and a gas outlet, the powder feeder is connected to the powder inlet of the powder collecting barrel through a gas output part, and the vulcanization plate is arranged between the powder inlet and the gas outlet to filter and leave light or heavy powder carried by gas.

Optionally, the cold spray powder feeding system further comprises a powder amount measuring device, and the powder amount measuring device is arranged at the bottom of the powder collecting device to measure the weight of the light or heavy powder collected by the powder collecting device.

Optionally, the gas input portion includes a gas source, a first ball valve, a second ball valve, a third ball valve, a pressure regulating valve and a first three-way ball valve, and the gas output portion includes a second three-way ball valve and a third three-way ball valve;

the air source is connected with the first end of the first ball valve, the second end of the first ball valve is connected with the first end of the pressure regulating valve, the second end of the pressure regulating valve is connected with the first end of the second ball valve, the second end of the second ball valve is respectively connected with the first inlet and the third inlet of the powder feeder and the first end of the first three-way ball valve, the second end of the first three-way ball valve is connected with the second outlet of the powder feeder, the third end of the first three-way ball valve is connected with the first port of the second three-way ball valve, the third outlet of the powder feeder is connected with the first end of the third ball valve, the second end of the third ball valve is connected with the second end of the second three-way ball valve, the third end of the second three-way ball valve is connected with the first end of the third three-way ball valve, the second end of the third three-way ball valve is divided into two paths and is respectively connected with the air outlets of the cold spraying gun and the powder collecting device, and the third end of the powder inlet of the powder collecting device.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

the utility model provides a cold spraying powder feeding system, the light powder in the powder storage cavity of powder feeder falls to the filter disc on, transfers to the bottom of powder feeding cavity under the effect of powder transfer device, lets in gas in the passageway of ventilating for the light powder is directly broken up, is driven by gas and reaches outside the powder feeding cavity via the powder feeding cavity. Heavy powder in the powder feeding cavity falls onto the filter disc below, and gas is introduced into the ventilation passage, so that the heavy powder falls into the powder falling barrel after being filtered by the filter disc and is conveyed out of the powder falling barrel through the powder falling barrel.

When the powder feeder conveys light powder, the light powder is scattered by the gas and is uniformly distributed in the gas, so that the problems of uneven powder feeding and difficult control of the powder feeding amount when the traditional large-particle-size powder feeder conveys small-particle-size powder are solved. When the powder feeder transports heavy powder, the heavy powder falls into the powder dropping barrel after being filtered by the filter disc and is output to the outside of the powder dropping barrel through the powder dropping barrel, so that the problems of small powder feeding amount and easy blockage of powder feeding when the traditional small-particle-size powder feeder conveys powder with large particle size are solved. Therefore, the cold spraying powder feeding system provided by the disclosure can be suitable for feeding different types of powder.

Drawings

FIG. 1 is a schematic structural diagram of a cold spray powder delivery system according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a powder feeder according to an embodiment of the disclosure;

FIG. 3 is a cross-sectional view taken along line A-A of the powder feeder according to an embodiment of the disclosure;

FIG. 4 is an exploded view of the powder feeder according to the embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a powder scraping plate of the powder feeder according to the embodiment of the disclosure;

FIG. 6 is a schematic structural diagram of a filter disc of the powder feeder according to the embodiment of the disclosure;

FIG. 7 is a cross-sectional view of a powder dropping barrel of the powder feeder according to the embodiment of the present disclosure;

FIG. 8 is another cross-sectional view of the powder falling barrel of the powder feeder according to the embodiment of the present disclosure, with the thread being omitted;

FIG. 9 is a schematic structural view of a powder feeder body of the powder feeder according to the embodiment of the present disclosure;

FIG. 10 is a schematic structural view of a powder baffle of the powder feeder according to the embodiment of the disclosure;

FIG. 11 is a flow chart of a powder feeding method according to an embodiment of the disclosure;

FIG. 12 is a second flowchart of a powder feeding method according to an embodiment of the disclosure;

fig. 13 is an exploded view of the powder collecting device according to the embodiment of the present disclosure.

Wherein, 1, a powder feeder;

11. a powder feeder main body; 111. a powder storage cavity; 112. a powder feeding cavity; 113. a first inlet; 114. a first outlet; 115. a second inlet; 116. a second outlet; 117. a powder baffle plate; 118. a notch; 119. a powder feeder end cover; 1110. a powder feeder housing; 1111. a vibration motor;

12. a powder transfer device; 121. a filter disc; 1211. an opening part; 1212. a closing part; 1213. a first pressure ring; 1214. filtering with a screen; 1215. a second pressure ring; 122. a drive motor; 123. a motor transmission shaft; 124. a powder scraping plate;

13. a powder falling barrel; 131. a ventilation passage; 132. a third inlet; 133. a third outlet; 134. the inner wall of the powder falling barrel; 135. a powder groove;

2. a gas transport section;

21. a gas input portion; 211. a gas source; 212. a first ball valve; 213. a pressure regulating valve; 214. a barometer; 215. a second ball valve; 216. a first three-way ball valve; 217. a third ball valve;

22. a gas output section; 221. a second three-way ball valve; 222. a third three-way ball valve;

3. a cold spray gun;

4. a powder collection device; 41. a powder collection barrel; 42. vulcanizing the board; 43. a powder inlet; 44. an air outlet;

5. powder quantity measuring device.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Fig. 1 is a schematic structural view of a cold spray powder feeding system according to an embodiment of the present disclosure, fig. 2 is a schematic structural view of a powder feeder according to an embodiment of the present disclosure, fig. 3 is a sectional view a-a of the powder feeder according to an embodiment of the present disclosure, and fig. 4 is an exploded structural view of the powder feeder according to an embodiment of the present disclosure. As shown in fig. 1, the cold spray powder feeding system includes a powder feeder 1, and as shown in fig. 2, 3, and 4, the powder feeder 1 includes: a powder feeder main body 11, a powder transfer device 12 and a powder dropping barrel 13. The powder feeder main body 11 is provided with a powder storage cavity 111 and a powder feeding cavity 112, wherein the powder storage cavity 111 is used for storing light powder or heavy powder; the powder falling barrel 13 is provided with an air passage 131 communicated with the powder storage cavity 111 and the powder feeding cavity 112;

a powder transfer device 12, wherein the powder transfer device 12 comprises a filter disc 121, a driving device and a powder scraping plate 124, the filter disc 121 is arranged in the air passage 131 to separate the powder feeder main body 11 from the powder dropping barrel 13, the driving device drives the powder scraping plate 124 to rotate so as to transfer the light or heavy powder dropped from the powder storage cavity 111 onto the filter disc 121 from the bottom of the powder storage cavity 111 to the bottom of the powder feeding cavity 112;

gas is introduced into the ventilation passage 131 to drive the light powder on the filter disc 121 to be sent out through the powder feeding cavity 112; or the heavy powder in the ventilation channel 131 is driven to pass through the filter disc and to be sent out through the powder falling barrel 13.

The light or heavy powders can be measured by the concept of powder apparent density. Powder apparent density is the bulk density of a powder measured after it has been freely filled in a standard container under specified conditions, i.e., the mass per unit volume of the powder when loosely packed, and is a process property of the powder. The powder bulk density of heavy powders is an order of magnitude higher than that of light powders. In the disclosed embodiment, the loose packed density of the powder is less than or equal to 0.5g/cm³And the average grain diameter of the powder is less than or equal to 5 microns, and the powder is light powder. The loose density of the powder is more than or equal to 1.0g/cm³And the powder with the average grain diameter more than or equal to 15 microns is heavy powder.

In specific implementation, the powder storage cavity 111 is used for storing light powder or heavy powder, and air is introduced into the powder storage cavity 111 to balance the air pressure in the powder storage cavity 111 and the air pressure in the air passage 131, so that the light powder or the heavy powder in the powder storage cavity 111 can normally fall onto the filter 121 of the powder transfer device 12.

Because the filter 121 is disposed in the ventilation passage 131 of the powder dropping barrel 13, which is communicated with the powder storage cavity 111 and the powder feeding cavity 112, if the powder storage cavity 111 stores light powder, gas is introduced into the ventilation passage 131, so that the light powder on the filter 121 is carried by the gas to enter the powder feeding cavity 112, and is conveyed to the outside of the powder feeding cavity 112 through the powder feeding cavity 112. If the powder storage cavity 111 stores heavy powder, the gas is introduced into the ventilation passage 131, so that the heavy powder on the filter disc 121 falls into the powder dropping barrel 13 after being filtered by the filter disc 121, and is conveyed to the outside of the powder dropping barrel 13 through the powder dropping barrel 13. Therefore, the powder conveying barrel realizes the conveying operation suitable for the powder with different particle sizes.

The powder feeder main body 11 is provided with a first inlet 113 and a first outlet 114 which are communicated with the powder storage cavity 111, the powder feeder main body 11 is further provided with a second inlet 115 and a second outlet 116 which are communicated with the powder feeding cavity 112, the powder falling barrel 13 is provided with a third inlet 132 and a third outlet 133 which are communicated with the powder groove 135, and the powder groove 135 is arranged at the bottom of the powder falling barrel 13 and is communicated with the outside.

Fig. 11 is a flowchart of a powder feeding method according to an embodiment of the disclosure, and as shown in fig. 11, the flow of the powder feeder 1 to convey the light powder is as follows:

s101, putting the light powder into the powder storage cavity 111 for storage;

s102, introducing gas into the first inlet 113, so that the gas pressure in the powder storage cavity 111 and the gas pressure in the ventilation channel 131 are balanced, and the light powder falls onto the filter 121 through the first outlet 114;

s103, introducing gas from the third inlet 132 of the powder groove 135 and closing the third outlet 133 to realize the gas delivery from the powder groove 135 to the ventilation channel 131;

s104, the filter disc 121 is arranged in the ventilation passage 131, and due to the holes in the filter disc 121, when the gas conveyed to the ventilation passage 131 from the powder groove 135 flows through the filter disc 121 at a constant speed, the light powder on the filter disc 121 can be uniformly conveyed to the interior of the powder conveying cavity 112 through the second inlet 115, so that the uniformity of conveying the light powder can be ensured, and the condition that the ultrafine powder is conveyed unevenly in the conveying process by taking the powder out through the air flow to realize spraying is avoided;

s105, the light powder in the powder feeding cavity 112 is carried by the gas to the outside of the powder feeding cavity 112 through the second outlet 116.

Fig. 12 is a second flowchart of the powder feeding method according to the embodiment of the disclosure, and as shown in fig. 12, the flow of the powder feeder 1 for conveying heavy powder is as follows:

s201, putting heavy powder into the powder storage cavity 111 for storage;

s202, introducing gas into the first inlet 113, so that the gas pressure in the powder storage cavity 111 and the gas pressure in the ventilation channel 131 reach equilibrium, and the heavy powder normally falls onto the filter 121 from the first outlet 114;

s203, introducing gas from the second outlet 116, so that the gas is introduced into the ventilation passage 131;

s204, the filter disc 121 is arranged in the ventilation passage 131, heavy powder falling from the powder storage cavity 111 enters the powder falling barrel 13 after being filtered by the filter disc 121 under the action of gas introduced from the second outlet 116, and finally is collected in the powder groove 135 at the bottom of the powder falling barrel 13, and the arrangement mode can ensure that the problems of small powder feeding amount and powder feeding blockage during heavy powder conveying can be avoided;

s205, introducing a gas into the third inlet 132 of the powder groove 135 at the bottom of the powder dropping barrel 13, wherein the gas further drives the powder in the powder dropping barrel 13 to flow out of the powder dropping barrel 13 through the third outlet 133.

The embodiment of the disclosure provides a concrete implementation mode of a powder feeder 1, wherein the powder feeder 1 comprises a powder feeder main body 11, a powder transfer device 12 and a powder falling barrel 13. Fig. 9 is a schematic structural view of a powder feeder main body of the powder feeder according to the embodiment of the present disclosure, and fig. 10 is a schematic structural view of a powder blocking plate of the powder feeder according to the embodiment of the present disclosure.

Referring to fig. 9 and 10, the powder feeder main body 11 includes a powder feeder end cover 119, a powder feeder casing 1110, and a powder blocking plate 117. In this embodiment, the powder feeder cover 119 is provided with an internal thread, the upper end of the powder feeder housing 1110 is provided with an external thread, the powder feeder cover 119 and the powder feeder housing 1110 are tightly fitted by a thread structure, and a joint between the powder feeder cover 119 and the powder feeder housing 1110 is hermetically sealed by a raw adhesive tape, which is not shown in the figure. In other embodiments, the powder feeder cap 119 and the powder feeder housing 1110 may be joined and mated by welding.

In this embodiment, a notch 118 is formed in the inner wall of the powder feeder casing 1110, the powder blocking plate 117 is nested in the notch 118 on the inner wall of the powder feeder casing 1110, the cavity inside the powder feeder main body 11 is divided into the powder storage cavity 111 and the powder feeding cavity 112, so that mutual interference between air flow in the powder storage cavity 111 and air flow in the powder feeding cavity 112 can be avoided, and powder output by the powder storage cavity 111 and powder conveying by the powder feeding cavity 112 are performed sequentially. In other embodiments, the powder baffle 117 may be connected to the inner wall of the powder feeder casing 1110 by welding.

In this embodiment, the powder feeder casing 1110 is a cylinder, and the tail of the powder feeder casing 1110 gradually shrinks to form a hopper-shaped structure, which is designed to facilitate the falling and outputting of the light powder or the heavy powder in the powder storage cavity 111. In other embodiments, the powder feeder housing 1110 may be a cube, a cuboid, or a sphere.

The powder feeder shell 1110 is further provided with a vibration motor 1111, and the vibration motor 1111 can ensure that light powder or heavy powder in the powder storage cavity 111 normally falls, because when relatively more light powder or heavy powder is stored in the powder storage cavity 111, the light powder or heavy powder in the powder storage cavity 111 is difficult to fall. Meanwhile, by providing the vibration motor 1111, the powder is relatively easily dispersed on the filter sheet 121. Preferably, in this embodiment, the vibration motor 1111 is disposed at a side of the powder feeder casing 1110 close to the powder storage cavity 111. The magnitude of the vibration force of the vibration motor 1111 can be adjusted by a worker. In this embodiment, the vibration motor 1111 is fixed to the powder feeder casing 1110 by a band, and in other embodiments, the vibration motor 1111 may be fixed to the powder feeder casing 1110 by welding.

The outer contour of the powder baffle 117 is attached to the inner wall of the powder feeder casing 1110, which can prevent the light powder or heavy powder in the powder storage cavity 111 from entering the powder feeding cavity 112. The middle part of the powder baffle 117 is also provided with a powder baffle 117 channel which is penetrated up and down.

Fig. 5 is a schematic structural diagram of a powder scraping plate of the powder feeder according to the embodiment of the disclosure, and fig. 6 is a schematic structural diagram of a filter disc of the powder feeder according to the embodiment of the disclosure.

Referring to fig. 4, 5, and 6, the powder transferring device 12 includes a driving device, a powder scraping plate 124, and a filter 121. Drive arrangement includes driving motor 122, motor drive shaft 123, driving motor 122 is installed powder feeder end cover 119 top, still be equipped with the transmission through-hole on the powder feeder end cover 119, motor drive shaft 123 nestification is in keeping off powder board 117 passageway that link up from top to bottom at powder board 117, the one end of motor drive shaft 123 is connected to driving motor 122 through the transmission through-hole, and the powder board 124 is scraped in the other end connection, in order to drive it is rotatory to scrape powder board 124. The rotation speed of the driving motor 122 can be set by a worker, and in this embodiment, the rotation speed of the driving motor 122 can be adjusted by changing the voltage supplied to the driving motor 122. In this embodiment, the driving motor 122 is fixed on the end cover 119 of the powder feeder by screws, and a gap between the driving shaft 123 of the motor and the driving through hole is sealed by silica gel.

In this embodiment, the powder scraping plate 124 is composed of six inclined plates and a sleeve in the middle, and the powder scraping plate 124 is disposed on the filter 121 and rotated by the driving motor 122 to uniformly disperse the powder on the filter 121. In other embodiments, the powder scraping plate 124 may also be composed of a baffle plate and a sleeve which are arranged vertically, and the number of the inclined plates can be freely adjusted according to the common knowledge of the skilled person.

Filter 121 includes a closing portion 1212 and an opening portion 1211; the closed portion 1212 is disposed at the bottom of the powder storage cavity 111, the opening portion 1211 is disposed at the bottom of the powder feeding cavity 112, and the driving device drives the powder scraping plate 124 to rotate, so that the light or heavy powder falling from the powder storage cavity 111 is transferred from the closed portion 1212 to the opening portion 1211. In the present embodiment, the sealing portion 1212 is disposed at the bottom of the powder storage cavity 111, and the opening 1211 is disposed at the bottom of the powder feeding cavity 112, so that the gas in the ventilation channel does not affect the falling of the powder in the powder storage cavity 111. In this embodiment, the filter sheet 121 includes a first pressing ring 1213, a second pressing ring 1215, and a filter screen 1214, in which only a portion of the filter screen 1214 is perforated to constitute the perforated portion 1211, and the first pressing ring 1213 and the second pressing ring 1215 press the filter screen 1214 therebetween. In this embodiment, approximately half of the area of the filter 121 is the opening 1211.

Fig. 7 is a sectional view of a powder dropping barrel of the powder feeder according to the embodiment of the present disclosure, and fig. 8 is another sectional view of the powder dropping barrel of the powder feeder according to the embodiment of the present disclosure, in which a thread is omitted. As shown in fig. 7 and 8, the inner wall 134 of the powder dropping barrel is provided with a powder groove 135, in this embodiment, the cross section of the powder groove 135 is arc-shaped, the inner wall of the powder dropping barrel 13 is arc-shaped so that the heavy powder in the powder dropping barrel 13 is collected in the powder groove 135, both ends of the powder groove 135 are provided with a third inlet 132 and a third outlet 133, the third inlet 132 can introduce gas into the powder groove 135, so that the heavy powder in the powder groove 135 is sent out through the third outlet 133, and in this embodiment, the radius of the powder groove 135 is the same as the radius of the third outlet 133.

As shown in fig. 1, the cold spray powder feeding system further includes a gas transporting portion 2, a cold spray gun 3, a powder collecting device 4, and a powder amount measuring device 5. The gas transportation part 2 includes a gas input part 21 and a gas output part 22, the gas input part 21 is connected to the powder feeder 1 to input gas to the powder feeder 1, the powder feeder 1 is connected to the cold spray gun 3 through the gas output part 22 to externally spray light or heavy powder through the cold spray gun 3, or the powder feeder 1 is connected to the powder collection device 4 through the gas output part 22 to input the light or heavy powder to the powder collection device 4 for collection.

Fig. 13 is an exploded view of the powder collecting device 4 according to the embodiment of the present disclosure. As shown in fig. 13, the powder collecting device 4 includes a powder collecting barrel 41, the powder collecting barrel 41 is provided with a powder inlet 43 and a gas outlet 44, the powder feeder 1 is connected to the powder inlet 43 of the powder collecting barrel 41 through the gas output part 22, and a vulcanizing plate 42 is provided between the powder inlet 43 and the gas outlet 44 to filter and leave light or heavy powder carried by gas entering from the powder inlet 43. In this embodiment the powder collecting vessel 41 includes powder collecting vessel end cover, powder collecting vessel shaft and powder collecting vessel tail-hood, the upper end and the lower extreme that the powder collecting vessel end cover has internal thread, powder collecting vessel shaft have the external screw thread, the tail-hood of powder collecting vessel has the internal thread, the upper end of powder collecting vessel end cover and powder collecting vessel shaft is fixed the vulcanized plate 42 through the screw-thread fit structure between powder collecting vessel end cover and the powder collecting vessel shaft. The lower end of the powder collecting barrel body is connected with the tail cover of the powder collecting barrel in a matching mode through a threaded structure. The powder inlet 43 is arranged on the powder collecting barrel body, and the gas outlet 44 is arranged on the end cover of the powder collecting barrel.

The powder amount measuring device 5 is provided at the bottom of the powder collecting device 4 to measure the weight of the light or heavy powder collected by the powder collecting device 4. In the present embodiment, the powder amount measuring device 5 is an electronic scale which is provided at the bottom of the powder collecting device 4 to measure the weight of the light or heavy powder collected by the powder collecting device 4. In other embodiments, the electronic scale may be replaced with a pressure gauge, a pressure sensor, or other weight measuring instrument.

Specifically, as shown in fig. 1, in the present embodiment, the gas input portion 21 includes a gas source 211, a first ball valve 212, a second ball valve 215, a third ball valve 217, a pressure regulating valve 213, a first three-way ball valve 216, and a pressure gauge 214, and the gas output portion 22 includes a second three-way ball valve 221 and a third three-way ball valve 222;

the air source 211 is connected to a first end of the first ball valve 212, a second end of the first ball valve 212 is connected to a first end of the pressure regulating valve 213, a second end of the pressure regulating valve 213 is connected to a first end of the second ball valve 215, a second end of the second ball valve 215 is connected to the first inlet 113 and the third inlet 132 of the powder feeder 1 and a first end of the first three-way ball valve 216, respectively, and a second end of the first three-way ball valve 216 is connected to the second outlet 116 of the powder feeder 1. A pressure gauge 214 is connected between the pressure regulating valve 213 and a second ball valve 215 to measure the pressure of the air flow pressurized by the pressure regulating valve 213.

The third end of the first three-way ball valve 216 is connected with the first end of the second three-way ball valve 221, the third outlet 133 of the powder feeder 1 is connected with the first end of the third ball valve 217, the second end of the third ball valve 217 is connected with the second end of the second three-way ball valve 221, the third end of the second three-way ball valve 221 is connected with the first end of the third three-way ball valve 222, the second end of the third three-way ball valve 222 is divided into two paths to be respectively connected with the gas outlets 44 of the cold spray gun 3 and the powder collecting device 4, and the third end of the third three-way ball valve 222 is connected with the powder inlet 43 of the powder collecting device 4. The connection between the various components in the gas transportation section 2 is realized by pipe fittings, it should be understood that pipe fittings are only one means for realizing gas transportation, and for those skilled in the art, pipe fittings can be replaced by other alternatives of pipe fittings in the prior art.

For the transportation of the light powder, the first ball valve 212, the second ball valve 215, and the third ball valve 217 are initially kept closed, and the pressure regulating valve 213 is released. When the light powder is conveyed, the second end and the third end of the first three-way ball valve 216 are adjusted to be communicated, the first end and the third end of the second three-way ball valve 221 are adjusted to be communicated, the first ball valve 212 is opened, the third ball valve 217 is closed, the second ball valve 215 is opened after the pressure of the pressure regulating valve 213 is regulated, and the light powder in the powder feeder 1 is conveyed to the first end of the third three-way ball valve 222 under the driving of the air flow. The worker can choose to conduct the second end of the third three-way ball valve 222 to spray the light powder through the cold spray gun 3, or choose to conduct the third end of the third three-way ball valve 222 to make the light powder enter the powder collecting device 4 and be collected by the powder collecting device 4.

For the transportation of the heavy powder, the first ball valve 212, the second ball valve 215, and the third ball valve 217 are initially kept closed, and the pressure regulating valve 213 is released. When heavy powder is conveyed, the third ball valve 217 is opened, the first end and the second end of the first three-way ball valve 216 are adjusted to be communicated, the second end and the third end of the second three-way ball valve 221 are adjusted to be communicated, the first ball valve 212 is opened, the gas output by the gas source 211 is subjected to pressure regulation by the pressure regulating valve 213, and then the second ball valve 215 is opened, so that the heavy powder in the powder feeder 1 is conveyed to the first end of the third three-way ball valve 222. The operator can choose to conduct the second end of the third three-way ball valve 222 to make the heavy powder output through the cold spray gun 3 for spraying, or choose to conduct the third end of the third three-way ball valve 222 to make the heavy powder enter the powder collecting device 4 and be collected by the powder collecting device 4.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The previous description is only for the purpose of describing particular embodiments of the present disclosure, so as to enable those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Cold spray powder feeding system, its characterized in that, including the powder feeder, the powder feeder includes: the powder feeder comprises a powder feeder body, a powder dropping barrel and a powder transfer device, wherein the powder feeder body is provided with a powder storage cavity and a powder feeding cavity, and the powder storage cavity is used for storing light powder or heavy powder;

2. The cold spray powder delivery system of claim 1, wherein the powder feeder body is provided with a first inlet and a first outlet communicating with the powder storage cavity, and the powder feeder body is further provided with a second inlet and a second outlet communicating with the powder delivery cavity;

3. The cold spray powder delivery system of claim 1, wherein the filter includes a closed portion and an open portion;

4. The cold spray powder delivery system of claim 1, wherein the powder feeder body comprises a powder feeder end cover, a powder feeder housing, and a powder blocking plate, the powder feeder end cover is hermetically connected with the powder feeder housing, the inner wall of the powder feeder housing is provided with a notch, and the powder blocking plate is arranged in the notch to divide the interior of the powder feeder body into a powder storage cavity and a powder feeding cavity.

5. The cold spray powder delivery system of claim 2, wherein the inner wall of the powder hopper is curved such that powder in the powder hopper is collected in the powder chute.

6. The cold spray powder feed system of claim 1, further comprising a gas transport section and a cold spray gun, the gas transport section comprising a gas input and a gas output, the gas input being connected to the powder feeder to input gas to the powder feeder, the powder feeder being connected to the cold spray gun through the gas output to spray light or heavy powder through the cold spray gun to the exterior.

7. The cold spray powder feed system of claim 6, further comprising a powder collection device, the powder feeder connected to the powder collection device by a gas output to input light or heavy powder to the powder collection device for collection.

8. The cold spray powder delivery system of claim 7, wherein the powder collection device comprises a powder collection barrel provided with a powder inlet and a gas outlet, the powder feeder is connected to the powder inlet of the powder collection barrel through a gas output, and a vulcanization plate is provided between the powder inlet and the gas outlet to filter out light or heavy powder carried by the gas.

9. The cold spray powder delivery system of claim 7, further comprising a powder amount measuring device disposed at a bottom of the powder collecting device to measure a weight of the light or heavy powder collected by the powder collecting device.

10. The cold spray powder feed system of claim 7, wherein the gas input comprises a gas source, a first ball valve, a second ball valve, a third ball valve, a pressure regulating valve, and a first three-way ball valve, and the gas output comprises a second three-way ball valve and a third three-way ball valve;