阅读说明：本技术 一种板材热喷涂系统 (Plate thermal spraying system ) 是由 申志杰 赵纪明 于 2020-07-15 设计创作，主要内容包括：本发明涉及热喷涂技术领域,具体的说是一种板材热喷涂系统,包括喷枪,喷枪的上表面上固定连接有上粉盒,喷枪的一端固定套接有进气管,上粉盒的内部设置有上粉机构,喷枪的内部设置有进气机构,喷枪的外壁上转动连接有调节机构,通过设置的调节机构,将杠杆与喷枪的侧壁转动连接,利用夹槽内部上下两端开设的第一卡槽和第二卡槽对第一卡杆和第二卡杆进行滑动卡接,通过第一卡槽带动第一卡杆进行移动,通过第二卡槽带动第二卡杆进行移动,通过第一卡杆带动拨动块移动,通过第二卡杆带动推杆移动,进而对进气机构和上粉机构同时进行调节,进而方便喷枪在使用时根据不同规格的板材快速的对喷枪进行调节,无需分别对喷粉量和火焰喷射速进行调节。(The invention relates to the technical field of thermal spraying, in particular to a plate thermal spraying system which comprises a spray gun, wherein the upper surface of the spray gun is fixedly connected with an upper powder box, one end of the spray gun is fixedly sleeved with an air inlet pipe, a powder feeding mechanism is arranged inside the upper powder box, an air inlet mechanism is arranged inside the spray gun, an adjusting mechanism is rotatably connected on the outer wall of the spray gun, a lever is rotatably connected with the side wall of the spray gun through the arranged adjusting mechanism, a first clamping bar and a second clamping bar are slidably clamped and connected through a first clamping groove and a second clamping groove which are formed in the upper end and the lower end inside a clamping groove, the first clamping bar is driven to move through the first clamping groove, the second clamping bar is driven to move through the second clamping groove, a shifting block is driven to move through the first clamping bar, a push rod is driven to move through the second clamping bar, the air inlet mechanism and the powder feeding mechanism are simultaneously adjusted, and the spray gun can be conveniently and, the powder spraying amount and the flame spraying speed do not need to be respectively adjusted.)

1. A thermal spray system for sheet material, comprising: the powder feeding device comprises a spray gun (1), wherein the upper surface of the spray gun (1) is fixedly connected with a powder feeding box (2), one end of the spray gun (1) is fixedly sleeved with an air inlet pipe (3), a powder feeding mechanism (4) is arranged inside the powder feeding box (2), an air inlet mechanism (5) is arranged inside the spray gun (1), the outer wall of the spray gun (1) is rotatably connected with an adjusting mechanism (6), and the upper surface of the powder feeding box (2) is provided with a powder loading mechanism (7);

the powder feeding mechanism (4) comprises a powder outlet (41), an adjusting groove (42), a powder outlet groove (43), a feed inlet (44), an adjusting block (45), a push rod (46), an adjusting hole (47), a first spring (48) and a baffle (49), wherein the powder outlet (41) is formed on the inner wall of the lower end of the upper powder box (2), the adjusting groove (42) is formed at the lower end of the powder outlet (41), the powder outlet groove (43) is formed on the inner wall of the lower end of the adjusting groove (42), the powder outlet groove (43) corresponds to the feed inlet (44), the feed inlet (44) is formed on the outer wall of the upper end of the spray gun (1), the adjusting block (45) is movably sleeved in the adjusting groove (42), the push rod (46) is fixedly connected to one side of the adjusting block (45), and the push rod (46) extends to the outside of the upper powder box (2) through the adjusting hole (47) formed in the side wall of the upper powder box (2), first spring (48) has been cup jointed in the activity on the surface of push rod (46), fixedly connected with baffle (49) on the upper end outer wall of spray gun (1), baffle (49) are run through to the one end that regulating block (45) were kept away from in push rod (46), first spring (48) are located between baffle (49) and last powder box (2).

2. A thermal spray system for sheet material as claimed in claim 1, wherein: the air inlet mechanism (5) comprises an air conveying channel (51), a fixed plate (52), an expansion link (53), an air inlet sealing plate (54), a second spring (55), an air inlet groove (56), a sliding groove (57), a sliding block (58), an arc sealing groove (59), an arc sealing plate (510), a stirring groove (511) and a stirring block (512), the air conveying channel (51) is arranged inside one end, close to the air inlet pipe (3), of the spray gun (1), the fixed plate (52) is fixedly sleeved on the inner wall of the air conveying channel (51), the expansion link (53) is fixedly connected to the side wall, close to the air inlet pipe (3), of the fixed plate (52), the air inlet sealing plate (54) is fixedly connected to the other end of the expansion link (53), the second spring (55) is movably sleeved on the surface of the expansion link (53), the air inlet groove (56) is formed in the inner wall of the upper end, the gas transmission channel is characterized in that a sliding groove (57) is formed in the inner wall of the lower end of the gas transmission channel (51), a sliding block (58) is connected to the inner portion of the sliding groove (57) in a sliding mode, the sliding block (58) is fixedly connected with an air inlet sealing plate (54), an arc sealing groove (59) is formed in the lower end of the sliding groove (57), an arc sealing plate (510) is connected to the inner portion of the arc sealing groove (59) in a sliding mode, the upper surface of the arc sealing plate (510) is fixedly connected with the sliding block (58), a stirring groove (511) is formed in the lower end of the arc sealing groove (59), a stirring block (512) is connected to the inner portion of the stirring groove (511) in a sliding mode, and the.

3. A thermal spray system for sheet material as claimed in claim 1, wherein: adjustment mechanism (6) have been seted up on the surface including lever (61), clamp groove (62), first draw-in groove (63), first kelly (64), second draw-in groove (65) and second kelly (66), clamp groove (61) have been seted up on the surface and have been pressed from both sides groove (62), clamp groove (62) both sides inner wall center department all rotates through the bull stick and is connected with the outer wall of spray gun (1), first draw-in groove (63) have been seted up to the both sides inner wall lower extreme of clamp groove (62), two the inside sliding connection of first draw-in groove (63) has first kelly (64), first kelly (64) with dial and move piece (512) fixed connection, second draw-in groove (65) have been seted up on the both sides inner wall upper end of clamp groove (62), two the inside sliding connection of second draw-in groove (65) has second kelly (66), second kelly (66) and push rod (46) fixed connection.

4. A thermal spray system for sheet material as claimed in claim 1, wherein: the powder filling mechanism (7) comprises fixing rods (71), round plates (72), a spring seat (73), a third spring (74), a sealing plate (75), a powder filling pipe (76) and a powder filling opening (77), the two fixing rods (71) are respectively and fixedly connected to the inner walls of the two sides of the upper powder box (2), one end of each fixing rod (71) close to each other is fixedly connected with the same round plate (72), a spring seat (73) is fixedly connected on the upper surface of the circular plate (72), a third spring (74) is clamped inside the spring seat (73), the other end of the third spring (74) is fixedly connected with a sealing plate (75), the sealing plate (75) is movably sleeved inside the powder containing pipe (76), the powder containing pipe (76) is fixedly sleeved on the upper surface of the upper powder box (2), and a powder loading opening (77) is formed in the inner wall of one end of the powder loading pipe (76) positioned in the upper powder box (2).

5. A thermal spray system for sheet material as claimed in claim 2, wherein: the gas transmission channel (51) is communicated with the feed inlet (44), a spraying hole (8) is formed in the inner wall of one side, away from the gas inlet pipe (3), of the gas transmission channel (51), the spraying hole (8) extends to the outer wall of one end, away from the gas inlet pipe (3), of the spray gun (1), and a handle (9) is fixedly connected to the outer wall of the lower end of the spray gun (1); the arc-shaped sealing groove (59) is larger than the sliding groove (57), and the arc-shaped sealing plate (510) is tightly contacted with the sliding groove (57).

Technical Field

The invention relates to the technical field of thermal spraying, in particular to a plate thermal spraying system.

Background

Thermal spraying means that a coating material is heated and melted, atomized into ultrafine particles by high-speed airflow and sprayed onto the surface of a workpiece at a high speed to form a coating, different coating materials are selected according to requirements, one or more performances in the aspects of wear resistance, corrosion resistance, oxidation resistance, heat resistance and the like can be obtained, and a flame spray gun is a device for adjusting and controlling gas combustion flame, spraying material feeding and spraying atmosphere in the flame thermal spraying process.

The existing flame spray gun carries out thermal spraying on plates with different specifications, so that the powder spraying amount and the flame spraying speed during thermal spraying need to be adjusted through the device, but the powder feeding framework and the air inlet mechanism of the spray gun are separately arranged, so that the powder spraying amount and the flame spraying speed of the spray gun need to be respectively adjusted during adjustment, the powder spraying amount and the flame spraying speed of the spray gun cannot be adjusted simultaneously, and further the powder spraying amount and the flame spraying speed of the spray gun are adjusted more inconveniently, and the whole powder box needs to be replaced after metal powder in the existing spray gun powder box is used up, and the spraying efficiency of the spray gun is greatly reduced.

Disclosure of Invention

The invention provides a thermal spraying system for plates, which aims to solve the problems in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a panel hot spraying system, includes the spray gun, fixedly connected with goes up the powder box on the upper surface of spray gun, the fixed cover of one end of spray gun has connect the intake pipe, the inside of going up the powder box is provided with powder mechanism, the inside of spray gun is provided with air inlet mechanism, it is connected with adjustment mechanism to rotate on the outer wall of spray gun, the upper surface of going up the powder box has seted up dress powder mechanism.

Specifically, the powder feeding mechanism comprises a powder outlet, an adjusting groove, a powder outlet groove, a feeding hole, an adjusting block, a push rod, an adjusting hole, a first spring and a baffle plate, the powder outlet is arranged on the inner wall of the lower end of the upper powder box, the lower end of the powder outlet is provided with an adjusting groove, a powder outlet groove is arranged on the inner wall of the lower end of the adjusting groove, the powder outlet groove corresponds to the feeding hole, the feed inlet is arranged on the outer wall of the upper end of the spray gun, the adjusting block is movably sleeved in the adjusting groove, one side of the adjusting block is fixedly connected with a push rod, the push rod extends to the outside of the upper powder box through an adjusting hole arranged on the side wall of the upper powder box, a first spring is movably sleeved on the surface of the push rod, a baffle plate is fixedly connected on the outer wall of the upper end of the spray gun, the one end that the regulating block was kept away from to the push rod runs through the baffle, first spring is located between baffle and the last powder box.

Specifically, the air inlet mechanism comprises an air delivery channel, a fixed plate, a telescopic rod, an air inlet sealing plate, a second spring, an air inlet groove, a sliding block, an arc-shaped sealing groove, an arc-shaped sealing plate, a stirring groove and a stirring block, wherein the air delivery channel is arranged inside one end of the spray gun close to the air inlet pipe, the fixed plate is fixedly sleeved on the inner wall of the air delivery channel, the telescopic rod is fixedly connected to one side wall of the fixed plate close to the air inlet pipe, the air inlet sealing plate is fixedly connected to the other end of the telescopic rod, the second spring is movably sleeved on the surface of the telescopic rod, the air inlet groove is arranged on the inner wall of the upper end of the air delivery channel, the sliding groove is arranged on the inner wall of the lower end of the air delivery channel, the sliding block is connected inside the sliding groove in a sliding manner, the sliding block, the upper surface and the slider fixed connection of arc shrouding, stir the groove has been seted up to the lower extreme in arc seal groove, stir the inside sliding connection in groove and stir the piece, stir piece and arc shrouding fixed connection.

The adjusting mechanism comprises a lever, a clamping groove, a first clamping rod, a second clamping groove and a second clamping rod, the clamping groove is formed in the surface of the lever, the centers of the inner walls of two sides of the clamping groove are connected with the outer wall of the spray gun through rotating rods in a rotating mode, the lower ends of the inner walls of two sides of the clamping groove are provided with the first clamping groove and the second clamping groove, the first clamping rod is connected with the first clamping rod in a sliding mode, the first clamping rod is fixedly connected with a poking block, the upper ends of the inner walls of two sides of the clamping groove are provided with the second clamping groove and the second clamping rod in a sliding mode, and the second clamping rod is fixedly connected with the push rod.

Specifically, dress powder mechanism includes dead lever, plectane, spring holder, third spring, closing plate, dress powder pipe and dress powder mouth, two the dead lever is fixed connection respectively on the both sides inner wall of last powder box, two the same plectane of one end fixedly connected with that the dead lever is close to each other, fixedly connected with spring holder on the upper surface of plectane, the inside joint of spring holder has the third spring, the other end fixedly connected with closing plate of third spring, the closing plate activity cup joints inside the dress powder pipe, dress powder pipe is fixed to cup joint on the upper surface of last powder box, dress powder pipe is located and has seted up dress powder mouth on the inside one end inner wall of last powder box.

Specifically, the gas transmission channel is communicated with the feed inlet, a spraying hole is formed in the inner wall of one side, away from the gas inlet pipe, of the gas transmission channel, the spraying hole extends to the spray gun and is far away from the outer wall of one end of the gas inlet pipe, a handle is fixedly connected to the outer wall of the lower end of the spray gun, the arc-shaped sealing groove is large in size and is in close contact with the sliding groove, and the arc-shaped sealing plate is in close contact.

The invention has the beneficial effects that:

(1) according to the plate thermal spraying system, the first clamping rod is driven to move through the first clamping groove, the second clamping rod is driven to move through the second clamping groove, the shifting block is driven to move through the first clamping rod, the push rod is driven to move through the second clamping rod, the air inlet mechanism and the powder feeding mechanism are adjusted simultaneously, the powder spraying amount and the flame spraying speed of the spray gun can be adjusted simultaneously, the spray gun can be adjusted rapidly according to plates of different specifications when the spray gun is used conveniently, and the powder spraying amount and the flame spraying speed do not need to be adjusted respectively.

(2) According to the plate thermal spraying system, the upper powder box is arranged, the upper powder box is used for storing powder, when the powder is used up, the connection between the upper powder box and the gas transmission channel is closed, then the sealing plate is pressed to drive the sealing plate to move downwards, so that the powder loading port is communicated with the outside of the upper powder box, the powder is introduced into the upper powder box, and the spray gun can be loaded without replacing the upper powder box.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a thermal spray system for a sheet material according to the present invention;

FIG. 2 is an external block diagram of a thermal spray system for sheet material provided by the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1 of a thermal spray system for a sheet material according to the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 1 of a thermal spray system for a sheet material provided by the present invention;

fig. 5 is a structural diagram of a powder loading mechanism of the thermal spraying system for plates provided by the invention.

In the figure: 1. a spray gun; 2. feeding the powder box; 3. an air inlet pipe; 4. a powdering mechanism; 41. a powder outlet; 42. an adjustment groove; 43. a powder outlet groove; 44. a feed inlet; 45. an adjusting block; 46. a push rod; 47. an adjustment hole; 48. a first spring; 49. a baffle plate; 5. an air intake mechanism; 51. a gas transmission channel; 52. a fixing plate; 53. a telescopic rod; 54. an air inlet closing plate; 55. a second spring; 56. an air inlet groove; 57. a chute; 58. a slider; 59. arc-shaped groove sealing; 510. an arc-shaped sealing plate; 511. a poking groove; 512. a shifting block; 6. an adjustment mechanism; 61. a lever; 62. a clamping groove; 63. a first card slot; 64. a first clamping rod; 65. a second card slot; 66. a second clamping rod; 7. a powder loading mechanism; 71. fixing the rod; 72. a circular plate; 73. a spring seat; 74. a third spring; 75. a sealing plate; 76. a powder filling pipe; 77. filling a powder opening; 8. spraying holes; 9. a handle.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-5, the thermal spraying system for plates according to the present invention includes a spray gun 1, wherein an upper powder box 2 is fixedly connected to an upper surface of the spray gun 1, an air inlet pipe 3 is fixedly sleeved at one end of the spray gun 1, a powder feeding mechanism 4 is disposed inside the upper powder box 2, an air inlet mechanism 5 is disposed inside the spray gun 1, an adjusting mechanism 6 is rotatably connected to an outer wall of the spray gun 1, and a powder loading mechanism 7 is disposed on an upper surface of the upper powder box 2.

The powder feeding mechanism 4 comprises a powder outlet 41, an adjusting groove 42, a powder outlet groove 43, a feed inlet 44, an adjusting block 45, a push rod 46, an adjusting hole 47, a first spring 48 and a baffle plate 49, wherein the powder outlet 41 is formed on the inner wall of the lower end of the upper powder box 2, the adjusting groove 42 is formed at the lower end of the powder outlet 41, the powder outlet groove 43 is formed on the inner wall of the lower end of the adjusting groove 42, the powder outlet groove 43 corresponds to the feed inlet 44, the feed inlet 44 is formed on the outer wall of the upper end of the spray gun 1, the adjusting block 45 is movably sleeved in the adjusting groove 42, the push rod 46 is fixedly connected to one side of the adjusting block 45, the push rod 46 extends to the outside of the upper powder box 2 through the adjusting hole 47 formed in the side wall of the upper powder box 2, the first spring 48 is movably sleeved on the surface of the push rod 46, the baffle plate 49 is fixedly connected to the outer wall of the upper end of the spray gun 1, one end, the push rod 46 drives the adjusting block 45 to move when moving, the adjusting block 45 enables the powder outlet 41 to be communicated with the powder outlet groove 43 through the adjusting groove 42 when moving, the opening size of the adjusting groove 42 can be adjusted when the adjusting block 45 moves, then the powder amount entering the gas transmission pipeline 51 is adjusted, and further the powder spraying amount of the spray gun 1 can be adjusted.

Specifically, the air inlet mechanism 5 comprises an air delivery channel 51, a fixing plate 52, an expansion link 53, an air inlet sealing plate 54, a second spring 55, an air inlet groove 56, a sliding groove 57, a sliding block 58, an arc sealing groove 59, an arc sealing plate 510, a stirring groove 511 and a stirring block 512, the air delivery channel 51 is arranged inside one end of the spray gun 1 close to the air inlet pipe 3, the fixing plate 52 is fixedly sleeved on the inner wall of the air delivery channel 51, the expansion link 53 is fixedly connected on the side wall of one side of the fixing plate 52 close to the air inlet pipe 3, the air inlet sealing plate 54 is fixedly connected at the other end of the expansion link 53, the second spring 55 is movably sleeved on the surface of the expansion link 53, the air inlet groove 56 is arranged on the inner wall of the upper end of the air delivery channel 51, the sliding groove 57 is arranged on the inner wall of the lower end of the air delivery channel 51, the sliding block, arc seal groove 59's inside sliding connection has arc shrouding 510, arc shrouding 510's upper surface and slider 58 fixed connection, stir groove 511 has been seted up to arc seal groove 59's lower extreme, stir groove 511's inside sliding connection has stir moving block 512, stir moving block 512 and arc shrouding 510 fixed connection, it moves arc shrouding 510 to drive when stirring block 512 removes, arc shrouding 510 drives slider 58 and removes, slider 58 drives the shrouding 54 that admits air and removes, and then make intake pipe 3 pass through intake duct 56 and gas transmission path 51 intercommunication, remove the opening size that admits air shrouding 54 can add intake duct 56, and then adjust the inside gas flow of gas transmission path 51, and then can adjust spray gun 1's flame jet velocity.

Specifically, the adjusting mechanism 6 includes a lever 61, a clamping groove 62, a first clamping groove 63, a first clamping bar 64, a second clamping groove 65 and a second clamping bar 66, the surface of the lever 61 is provided with the clamping groove 62, the centers of the inner walls at two sides of the clamping groove 62 are rotatably connected with the outer wall of the spray gun 1 through rotating bars, the lower ends of the inner walls at two sides of the clamping groove 62 are provided with the first clamping grooves 63, the first clamping bars 64 are slidably connected with the inside of the two first clamping grooves 63, the first clamping bars 64 are fixedly connected with a toggle block 512, the upper ends of the inner walls at two sides of the clamping groove 62 are provided with the second clamping grooves 65, the inside of the two second clamping grooves 65 is slidably connected with the second clamping bars 66, the second clamping bars 66 are fixedly connected with the push rod 46, when different plates are sprayed and the powder spraying amount and the flame spraying speed of the spray gun 1 need to be adjusted at the same time, the lower end of the lever 61 is pressed to drive the lever 61 to rotate on the side wall of the spray gun 1 through the rotating shaft, the first engaging groove 63 drives the first engaging rod 64 to move, the first engaging rod 64 drives the moving block 512 to move, and the second engaging rod 66 drives the pushing rod 46 to move.

Specifically, the powder loading mechanism 7 includes fixing rods 71, circular plates 72, spring seats 73, third springs 74, sealing plates 75, powder loading pipes 76 and powder loading ports 77, the two fixing rods 71 are respectively and fixedly connected to the inner walls of the two sides of the upper powder box 2, one end of the two fixing rods 71 close to each other is fixedly connected with the same circular plate 72, the spring seat 73 is fixedly connected to the upper surface of the circular plate 72, the third spring 74 is clamped inside the spring seat 73, the sealing plate 75 is fixedly connected to the other end of the third spring 74, the sealing plate 75 is movably sleeved inside the powder loading pipe 76, the powder loading pipe 76 is fixedly sleeved on the upper surface of the upper powder box 2, the powder loading port 77 is formed in the inner wall of one end of the powder loading pipe 76 inside the upper powder box 2, when the powder inside the upper powder box 2 is used up, the lever 8 is released, the push rod 46 is driven to move back by the first spring 48, the, regulating block 45 is closed with regulation hole 47, remove the intercommunication of powder outlet 41 and powder outlet groove 43, close the connection of last powder box 2 and gas transmission channel 51, then press sealing plate 75 to drive sealing plate 75 and move down, and then make powder loading mouth 77 and the outside intercommunication of last powder box 2, and then let in the powder through dress powder pipe and powder loading mouth 77 and go up inside powder box 2 with the powder, need not to change powder box 2, just can carry out the material loading to spray gun 1, the material loading speed is very fast, and then great improvement spraying efficiency.

Specifically, gas transmission channel 51 is linked together with feed inlet 44, has seted up spraying hole 8 on the gas transmission channel 51 keeps away from one side inner wall of intake pipe 3, and spraying hole 8 extends to spray gun 1 and keeps away from intake pipe 3 one end outer wall, fixedly connected with handle 9 on the lower extreme outer wall of spray gun 1, and the gas promotes the powder from spraying hole 8 blowout gas transmission pipeline 51, can be stable through handle 9 press lever 71.

Specifically, the arc seal groove 59 is large and close to the sliding groove 57, and the arc seal plate 510 is closely contacted with the sliding groove 57, so that the opening at the lower end of the sliding groove 57 is blocked by the arc seal plate 510, and further, the gas is prevented from leaking from the sliding groove 57.

When the spraying device is used, when different plates are sprayed and the powder spraying amount and the flame spraying speed of the spray gun 1 need to be adjusted at the same time, the lower end of the lever 61 is pressed to drive the lever 61 to rotate on the side wall of the spray gun 1 through the rotating shaft, the lever 61 drives the positions of the first clamping groove 63 and the second clamping groove 65 to move when rotating, the first clamping groove 63 drives the first clamping rod 64 to move, the first clamping rod 64 drives the shifting block 512 to move, the second clamping rod 66 drives the push rod 46 to move, the shifting block 512 drives the arc-shaped sealing plate 510 to move when moving, the arc-shaped sealing plate 510 drives the sliding block 58 to move, the sliding block 58 drives the air inlet sealing plate 54 to move, so that the air inlet pipe 3 is communicated with the air conveying channel 51 through the air inlet channel 56, the size of the opening of the air inlet sealing plate 54 can be increased, the gas flow inside the air conveying channel 51 can be adjusted, and the flame spraying, the push rod 46 drives the adjusting block 45 to move when moving, the adjusting block 45 enables the powder outlet 41 to be communicated with the powder outlet groove 43 through the adjusting groove 42 when moving, the adjusting block 45 can adjust the opening size of the adjusting groove 42 when moving, further, the powder amount entering the gas transmission pipeline 51 can be adjusted, further, the powder spraying amount of the spray gun 1 can be adjusted, further, the powder spraying amount and the flame spraying speed of the spray gun 1 can be adjusted simultaneously, further, the spray gun 1 can be conveniently adjusted rapidly according to plates of different specifications when in use, the powder spraying amount and the flame spraying speed are not required to be adjusted respectively, the upper powder box 2 is utilized to store powder, when the powder inside the upper powder box 2 is used up, the lever 8 is released, the push rod 46 is driven to move back through the first spring 48, the adjusting block 45 is driven to move back through the push rod 46, the adjusting block 45 closes the adjusting hole 47, the communication between the powder outlet 41 and the powder outlet groove 43 is released, close being connected of going up powder box 2 and gas transmission channel 51, then press the closing plate 75 and drive the closing plate 75 and move down, and then make dress powder mouth 77 and last powder box 2 outside intercommunication, and then let in powder box 2 with the powder through dress powder pipe and dress powder mouth 77 inside, need not to change powder box 2, just can carry out the material loading to spray gun 1, the material loading speed is very fast, and then great improvement spraying efficiency.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.