CN216988152U - Spray gun capable of realizing multiple atomization modes - Google Patents

Abstract

The utility model provides a spray gun capable of realizing multiple atomization modes, and belongs to the technical field of spray guns. It has solved the single problem of current spray gun atomizing mode. A spray gun capable of realizing multiple atomization modes is provided with a spray gun main body and a gun head assembly with a plurality of gun heads, wherein a main air channel of the gun heads is communicated with a first main air channel, and an auxiliary air channel is communicated with a first auxiliary air channel; defining the area of the mutual overlapping part of the port of the main air channel and the port of the first main air channel as A; defining the area of the mutual overlapping part of the port of the auxiliary air channel and the port of the first auxiliary air channel as B; the cross-sectional areas A and B of each lance tip are different in value. The atomizing spray gun of the utility model cancels the arrangement of a flow divider. The cross-sectional areas a and B of different lances for atomisation according to the utility model are different. The gas flow can be increased or decreased by changing the cross-sectional areas A and B of the overlapping part of the lance head and the lance body, so that different atomization modes can be realized.

Description

Spray gun capable of realizing multiple atomization modes

Technical Field

The present invention relates to a spray gun for coating operation, and more particularly to a spray gun capable of realizing a plurality of atomization modes.

Background

Spray guns are tools that use compressed air to convert liquid coating materials into atomized particles. Existing spray guns include a body, a nozzle, an atomizing cap and a diverter valve, as well as other functional adjustment components. The existing spray gun meeting the environmental protection requirement mainly has three types according to the different atomizing modes: 1. the low-pressure spray gun is totally called as a high-flow low-pressure spray gun, the air consumption is about 350L-430L/min, the atomization air pressure is 0.7bar, and the HVLP spray gun is called in the spraying industry for short; 2. the medium-pressure spray gun has the gas consumption of 270L-290L/min and the atomization gas pressure of 1.5-2 ba; 3. the spray gun with small flow and low air pressure is mainly a small repairing spray gun for spraying gaps, dead corners and repairing paint, and because the caliber of the spray gun is small (the discharge hole of a spray nozzle is generally between 0.3 and 1.0), the air flow and the air pressure used by the spray gun are very small, the air consumption is about 110L to 200L/min, and the atomization air pressure is 0.7 to 1.0 bar. The above spray guns have different atomization modes, so that the required air flow and air pressure are different.

The spray gun popular in the market adopts a flow divider to realize the isolation and the flow division of a main gas path and an auxiliary gas path. The diverter valve is assembled to the spray gun as a separate component. Then, the atomizing cap and the nozzle matched with the flow dividing valve are continuously assembled on the basis. Under the restriction of the main and auxiliary gas circuits and the flow divider of the spray gun, an end user cannot change the cross-sectional flow of the spray gun, the gun head and the flow divider, so that only one fixed atomization form can be met, and the change of gas flow and air pressure cannot be realized, thereby being incapable of realizing different atomization modes to meet different requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a spray gun capable of realizing multiple atomization modes.

The purpose of the utility model can be realized by the following technical scheme:

a spray gun capable of realizing multiple atomization modes comprises a spray gun main body with a first main gas path and a first auxiliary gas path, and further comprises a gun head assembly with a plurality of gun heads, wherein each gun head is provided with a main gas channel and an auxiliary gas channel; after the gun head and the spray gun main body are assembled, the main air channel is communicated with the first main air channel, and the auxiliary air channel is communicated with the first auxiliary air channel;

defining the area of the overlapped part of the port of the main air channel and the port of the first main air channel as A, wherein A is the cross sectional area for air flow to pass through at the joint of the main air channel and the first main air channel when the main air channel and the first main air channel are communicated;

defining the area of the mutual overlapping part of the port of the auxiliary air channel and the port of the first auxiliary air path as B, wherein B is the cross sectional area for air flow to pass through at the joint of the auxiliary air channel and the first auxiliary air path when the auxiliary air channel is communicated with the first auxiliary air path;

the numerical values of the cross-sectional areas A corresponding to the lance heads are different, and the numerical values of the cross-sectional areas B corresponding to the lance heads are different.

Preferably, the main gas channel comprises a main gas inlet groove, a main gas storage bin and a main gas outlet; the auxiliary air channel comprises an auxiliary air inlet groove, an auxiliary air ventilation channel and an auxiliary air outlet groove; the main air inlet groove is communicated with the main air storage bin, and the main air outlet is communicated with the main air storage bin; the auxiliary air inlet groove is communicated with the auxiliary air outlet groove through the auxiliary air ventilation channel.

Preferably, the lance tip assembly comprises a first lance tip, a second lance tip and a third lance tip; the cross-sectional area a and the cross-sectional area B corresponding to the first lance tip are respectively specifically a1 and B1, the cross-sectional area a and the cross-sectional area B corresponding to the second lance tip are respectively specifically a2 and B2, and the cross-sectional area a and the cross-sectional area B corresponding to the third lance tip are respectively specifically A3 and B3; the values of the A1, the A2 and the A3 are all inconsistent; the values of the B1, the B2 and the B3 are all inconsistent.

Preferably, the auxiliary vent path is an auxiliary vent, and the number and the aperture of the auxiliary vent of the first lance head and the second lance head are consistent; the number of the auxiliary vent holes of the third gun head and the aperture thereof are smaller than those of the auxiliary vent holes of the first gun head and the second gun head.

Preferably, two symmetrical positioning parts are arranged in the main gas storage bin; when the gun head is connected with the spray gun main body, the positioning part is in interference fit with the head central column of the spray gun main body.

Preferably, an annular gap channel is formed between the inner side of the main air storage bin and the head central column, and the main air outlet is communicated with the main air inlet groove through the annular gap channel.

Preferably, the cross-sectional area of the annular gap channel is defined as C, where C is the cross-sectional area through which air flows pass from the main air storage bin after the lance head is assembled with the lance main body, and a main air storage bin flow limiting block is arranged on the inner side of the main air storage bin and located in the annular gap channel; the main gas storage bin flow limiting block of each gun head is different from the overlapping area of the cross section area C.

Preferably, a sealing plate is mounted between the lance head and the lance body.

Preferably, one end of the spray gun main body is provided with a cutting edge, and the gun head is provided with a step matched with the cutting edge.

Preferably, the atomizing gun further comprises an atomizing cap and a nozzle, wherein the atomizing cap is in threaded connection with the outer side surface of the gun head, and the nozzle is connected with one end of the gun head; one end of each gun head is provided with a first partition plate, and the first partition plate is used for partitioning the main air channel and the auxiliary air channel; the other end of the gun head is provided with a second isolation plate, and the second isolation plate is used for separating the main air channel and the auxiliary air channel; and after the nozzle is connected with the gun head, the end surface of one end of the nozzle is abutted against the second isolation plate.

Preferably, a first positioning hole is formed in the spray gun main body, and a second hole corresponding to the first positioning hole is formed in the gun head; the gun head is connected with the spray gun main body through a positioning pin; the locating pin runs through the second hole, and the top of locating pin is located in the first hole.

Compared with the prior art, the atomizing spray gun provided by the utility model has the advantage that the arrangement of a separate flow divider is omitted. The atomizing spray gun of the utility model is provided with a gun head assembly, and the gun head assembly is provided with various gun heads. The cross-sectional areas A and B of different lance tips are different. The gas flow can be increased or decreased by changing the cross-sectional areas A and B of the overlapping part of the lance head and the lance body, so that different atomization modes can be realized. Namely, the atomizing spray gun can realize various atomizing modes by replacing different gun heads.

Drawings

Fig. 1 is an exploded view of the structure of an atomizing spray gun.

Fig. 2 is a first structural view of an atomizing spray gun.

Fig. 3 is a schematic view of the structure of one end of the first lance head and the second lance head.

Fig. 4 is a schematic view of the other end of the first lance tip.

Fig. 5 is a schematic view of the structure of the other end of the second lance tip.

Fig. 6 is a schematic view of an end structure of a third lance tip.

Fig. 7 is a schematic view of the other end of the third lance tip.

Fig. 8 is a schematic view of the connection of the other end of the first lance tip to the seal plate.

Fig. 9 is a schematic view of the connection of the other end of the second lance tip to the seal plate.

Fig. 10 is a schematic view of the connection of the other end of the third lance tip to the seal plate.

FIG. 11 is a second block diagram of the atomizing spray gun.

Fig. 12 is a third structural view of the atomizing spray gun.

In the figure, 1, a spray gun body; 11. a first main gas path; 12. a first auxiliary gas path; 13. a head central column; 14. trimming; 2. a gun head; 21. a main gas passage; 211. a primary air intake duct; 212. A main gas storage bin; 2121. a positioning part; 2122. a main gas storage bin flow limiting block; 213. a main air outlet; 22. an auxiliary gas channel; 221. an auxiliary air inlet groove; 222. an auxiliary vent hole; 223. an auxiliary air outlet groove; 23. a first separator plate; 24. a second separator plate; 25. an annular clearance channel; 26. a step; 3. a sealing plate; 4. an atomizing cap; 5. and (4) a nozzle.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 12, a spray gun capable of realizing multiple atomization modes includes a spray gun body 1, a paint cup is mountable on the spray gun body 1, and the internal structure of the spray gun body 1 is the prior art, so the details of this embodiment are not repeated. The torch body 1 has a first main gas passage 11 and a first auxiliary gas passage 12.

Different with current spray gun, the atomizing spray gun of this embodiment has cancelled solitary flow divider setting, has reduced the accessory, has reduced manufacturing cost. The atomizing spray gun of this embodiment has rifle head subassembly, and rifle head subassembly includes a plurality of rifle head 2. A spray gun main part 1 can only be connected with a rifle head 2, that is to say, the spray gun main part 1 of this application can reach different atomization effect through changing the rifle head of different models and matching the atomizing cap and the nozzle of different atomizing modes.

Specifically, each gun head 2 is provided with a main air channel 21 and an auxiliary air channel 22; when the gun head 2 is connected with the spray gun main body 1, the main air channel 21 is communicated with the first main air channel 11, and the auxiliary air channel 22 is communicated with the first auxiliary air channel 12.

One end of each lance head 2 is provided with a first partition plate 23, and the first partition plate 23 is used for partitioning the main air channel 21 and the auxiliary air channel 22. The main gas duct 21 comprises a main gas inlet slot 211, a main gas storage bin 212 and a main gas outlet 213; the auxiliary air passage 22 includes an auxiliary air inlet groove 221, an auxiliary air passage, and an auxiliary air outlet groove 223. The auxiliary vent path may be either the auxiliary vent hole 222 or an auxiliary vent groove. Preferably, the auxiliary vent path of the present embodiment is the auxiliary vent 222. The main air inlet groove 211 is communicated with the main air storage bin 212, and the main air outlet 213 is communicated with the main air storage bin 212; the auxiliary air inlet groove 221 is communicated with the auxiliary air outlet groove 223 through an auxiliary vent hole 222; the primary air intake groove 211 and the secondary air intake groove 221 are opened on the first partition plate 23.

Two symmetrical positioning parts 2121 are arranged in the main gas storage bin 212; when the gun head 2 is connected with the spray gun main body 1, the positioning part 2121 is in interference fit with the head central column 13 of the spray gun main body 1. The positioning part 2121 can be clamped on the spray gun main body 1 better, so that the gun head 2 is assembled and connected with the spray gun main body 1. An annular clearance channel 25 is arranged between the inner side of the main air storage bin 212 and the head central column 13, and the main air outlet 213 is communicated with the main air inlet groove 211 through the annular clearance channel 25.

In order to more clearly express the technical effect that the atomizing gun of the present embodiment can achieve, an area of a portion where a port of the main air passage 21 and a port of the first main air passage 11 overlap with each other is defined as a, where a is a cross-sectional area through which an air flow passes at a connection between the main air passage 21 and the first main air passage 11 when the two are conducted; the area of the overlapping portion of the port of the auxiliary air channel 22 and the port of the first auxiliary air channel 12 is defined as B, where B is the cross-sectional area through which the air flows at the joint of the auxiliary air channel 22 and the first auxiliary air channel 12 when they are communicated. The numerical values of the cross-sectional areas A corresponding to the lance heads 2 are different, and the numerical values of the cross-sectional areas B corresponding to the lance heads 2 are different.

In order to achieve the technical effects of replacing different gun heads and changing the gas pressure. The cross-sectional area a and the cross-sectional area B of each lance tip 2 of the lance tip assembly of this embodiment do not correspond in value to the cross-sectional area a and the cross-sectional area B of the lance body 1 when assembled.

Specifically, the lance tip assembly of this embodiment includes a first lance tip, a second lance tip, and a third lance tip. The cross-sectional area A and the cross-sectional area B corresponding to the first lance head are respectively A1 and B1; the area of the overlapping portion of the port of the main gas channel 21 and the port of the first main gas path 11 of the first lance tip is a1, and the area of the overlapping portion of the port of the auxiliary gas channel 22 and the port of the first auxiliary gas path 12 of the first lance tip is B1. The cross-sectional area A and the cross-sectional area B corresponding to the second lance head are respectively A2 and B2; the area of the overlapping portion of the port of the main gas channel 21 of the second lance tip and the port of the first main gas channel 11 is a2, and the area of the overlapping portion of the port of the auxiliary gas channel 22 of the second lance tip and the port of the second auxiliary gas channel 12 is B2. The cross-sectional area A and the cross-sectional area B corresponding to the third lance head are respectively specifically A3 and B3; the area of the overlapping portion of the port of the main gas channel 21 of the third lance head and the port of the first main gas channel 11 is a3, and the area of the overlapping portion of the port of the auxiliary gas channel 22 of the third lance head and the port of the first auxiliary gas channel 12 is B3.

If 8-10, a seal plate 3 is mounted between the lance tip 2 and the lance body 1. The sealing plate 3 can enhance the sealing performance of the connection between the lance head 2 and the lance body 1. Alternatively, the lance tip 2 may be directly connected to the lance body 1 without using the seal plate 3. Since the sealing plate 3 does not overlap with the port of the first main air passage 11 or the first auxiliary air passage 12. The overlap of different tips 2 can thus be observed through the sealing plate 3. As shown in fig. 8, when the first lance tip is assembled to the lance body 1, the port of the main gas passage 21 of the first lance tip almost overlaps with the port of the first main gas passage 11, with a maximum of a1 and B1, i.e. the gas flow rate does not change from the lance body 1 to the first lance tip, when the gas flow rate through the first lance tip is the maximum for the lance tip assembly.

As shown in fig. 9, when the second lance tip is assembled to the lance body 1, the port of the main gas passage 21 of the second lance tip overlaps with the port of the first main gas passage 11 for the most part, a2 is smaller than a1 and larger than A3, B2 is smaller than B1 and larger than B3, and the gas flows from the lance body 1 to the second lance tip with a reduced gas flow rate, and for the lance tip assembly, the gas flow rate through the second lance tip is smaller than that through the first lance tip.

As shown in fig. 10, when the third lance tip is assembled to the lance body 1, the port of the main gas passage 21 of the third lance tip overlaps with the port of the first main gas passage 11 by a small area, A3 is smaller than a2 and a1, B3 is smaller than B2 and B1, the gas flows from the lance body 1 to the third lance tip, the gas flow rate is greatly reduced, and for the lance tip assembly, the gas flow rate passed by the third lance tip is the smallest and smaller than the gas flow rates passed by the first lance tip and the second lance tip respectively.

Therefore, the change of the cross-sectional area A and the cross-sectional area B is realized by replacing different gun heads, so that the gas flow and the gas pressure are changed, and the effects of different atomizing spray guns are achieved. Thus, the spray gun does not need to be purchased for different situations, and the solution described in the embodiment is more economical and practical.

The above-described manner of varying the gas flow rate by varying the cross-sectional areas a and B is a first order flow regulation. On the basis of this, the inner side of the main gas storage 212 of this embodiment is provided with a main gas storage flow restriction block 2122, and the main gas storage flow restriction block 2122 is located in the annular gap passage 25. The cross-sectional area of the annular clearance channel 25 is defined as C, which is the cross-sectional area through which the gas flow passes from the main gas storage 212 after the lance head 2 and the lance body 1 are assembled. The superposed areas of the main air storage bin flow limiting block 2122 of each gun head 2 and the cross section area C are different.

As can be seen in fig. 11 and 12, the cross-sectional area C of the atomising lances with different tips 2 differs significantly. After the gas flow of the first main gas path 11 passes through the cross-sectional area a, the gas flow passes through the cross-sectional area C, so that the second-order flow adjustment of the main gas path can be realized, that is, the cross-sectional area C becomes smaller, and when the gas flow passes through the cross-sectional area C, the gas flow is reduced. In this example, the cross-sectional areas C of the first and second tips differ by a relatively small amount. The cross-sectional area C referred to above for the first and second tips is in particular C1. The third lance tip differs significantly from the cross-sectional areas C of the first and second lance tips. The cross-sectional area C of the third lance tip is specifically C2, with C2 being less than C1. For the auxiliary gas path, after the gas flow of the first auxiliary gas path 12 passes through the cross-sectional area B, the gas flows through the auxiliary vent 222, so that the second-order flow adjustment of the auxiliary gas path can be realized. As in this embodiment, the number and the aperture of the auxiliary vent holes 222 of the first lance head and the second lance head are the same; the number of secondary vent holes 222 and their diameter in the third lance tip are less than the secondary vent holes 222 in the first and second lance tips. Thus, after the air passes through the auxiliary vent holes 222 of different gun heads 2, the air flow can be changed, and the second-order flow adjustment of the auxiliary air path is realized. The user can be to according to the actual use condition, process the quantity and the aperture of the supplementary air vent of first rifle head, second rifle head and third rifle head to this changes the flow and the atmospheric pressure of gas flow through supplementary air vent.

Through the second-order flow regulation to main gas circuit and supplementary gas circuit like this, realize multiple atomizing mode. In order to facilitate quick assembly, one end of the spray gun body 1 is provided with a cutting edge 14, and an air hole close to the cutting edge 14 on the spray gun body 1 is a first main air path. The lance tip 2 is provided with a step 26 which cooperates with the cutting edge 14.

The atomizing spray gun of the embodiment further comprises an atomizing cap 4 and a nozzle 5, wherein the atomizing cap 4 is in threaded connection with the outer side surface of the gun head 2, and the nozzle 5 is connected with one end of the gun head 2; the other end of the gun head 2 is provided with a second isolation plate 24, and the second isolation plate 24 is used for separating the main air channel 21 and the auxiliary air channel 22; when the nozzle 5 is connected to the lance head 2, the end face of one end of the nozzle 5 abuts against the second partition plate 24. The atomizing cap 4 and the nozzle 5 each have various flow rates and hole diameters.

The atomizing spray gun described for this example. The first lance tip has cross-sectional areas a1, B1 and C1, and when the first lance tip and the atomizing cap 4 and nozzle 5 of the medium flow rate are assembled to the lance body 1, the atomizing lance is a medium pressure lance. The second tip has cross-sectional areas a2, B2 and C1, and when the second tip and the mass flow atomizing cap 4, nozzle 5 are assembled to the lance body 1, the atomizing lance is a low pressure lance. The third gun head has cross-sectional areas A3, B3 and C2, and when the third gun head, the small-flow atomizing cap 4 and the nozzle 5 are assembled on the spray gun main body 1, the atomizing spray gun is a small-flow low-pressure spray gun which is mainly used for spraying gaps, dead corners and repairing paint.

That is to say, in practical application, the atomizing spray gun of this embodiment can realize multiple atomizing mode through the collocation combination of rifle head, nozzle and atomizing cap.

Taking a CFCAPR automobile spray gun with a medium price as an example, the price to the terminal customer is 1200 yuan (the price of a certain large brand abroad is generally 3200-7500), usually, at least 3 spray guns with different atomization modes are needed by a sheet metal spray shop to meet various spraying requirements, and thus, the lowest use cost is 3600 yuan. If the atomizing spray gun of the embodiment is adopted, 3 different gun heads, atomizing caps and nozzles are configured, the price to the end customer is 1650 yuan, and half of the use cost can be saved.

The gun head 2 of the embodiment is convenient and quick to disassemble, easy to clean and not easy to damage.

The second embodiment:

this embodiment is substantially the same as the first embodiment except that the lance head 2 and the lance body 1 of this embodiment are assembled in a different manner. In the embodiment, the spray gun main body 1 is provided with a first positioning hole, and the gun head 2 is provided with a second hole corresponding to the first positioning hole; the gun head 2 is connected with the spray gun main body 1 through a positioning pin; the locating pin runs through the second hole, and the top of locating pin is located the first downthehole.

Example three:

this embodiment is substantially the same as the first embodiment, except that a seal plate 3 is not required between the lance tip 2 and the lance body 1 in this embodiment. In this embodiment, the lance head 2 is in hard sealing engagement with the lance body 1, and the end face of one end of the nozzle 5 abuts against the second partition plate 24 to press the lance head 2 against the lance body 1 for sealing.

Example four:

this embodiment is substantially the same as the first embodiment, except that the auxiliary vent hole 222 of this embodiment can be replaced by an auxiliary vent groove.

Example five:

the present embodiment is substantially the same as the first embodiment, and is different in that the head of the torch body 1 of the present embodiment is provided with external threads, the outside of the torch head 2 is not provided with external threads, and the atomizing cap 4 is screwed to the head of the torch body 1.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms first, second, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. A spray gun capable of realizing multiple atomization modes comprises a spray gun main body (1) with a first main gas circuit (11) and a first auxiliary gas circuit (12), and is characterized by further comprising a gun head assembly with a plurality of gun heads (2), wherein each gun head (2) is provided with a main gas channel (21) and an auxiliary gas channel (22); after the gun head (2) and the spray gun main body (1) are assembled, the main gas channel (21) is communicated with the first main gas channel (11), and the auxiliary gas channel (22) is communicated with the first auxiliary gas channel (12);

defining the area of the overlapping part of the port of the main air channel (21) and the port of the first main air channel (11) as A, wherein A is the cross-sectional area for air flow to pass through at the joint of the main air channel (21) and the first main air channel (11) when the main air channel is communicated with the first main air channel (11);

defining the area of the overlapped part of the port of the auxiliary air channel (22) and the port of the first auxiliary air path (12) as B, wherein B is the cross sectional area for air flow to pass through at the joint of the auxiliary air channel (22) and the first auxiliary air path (12) when the auxiliary air channel is communicated with the first auxiliary air path;

the numerical values of the cross-sectional areas A corresponding to the lance heads (2) are different, and the numerical values of the cross-sectional areas B corresponding to the lance heads (2) are different.

2. Spray gun capable of multiple atomization according to claim 1, characterised in that the main gas duct (21) comprises a main gas inlet channel (211), a main gas reservoir (212) and a main gas outlet (213); the auxiliary air channel (22) comprises an auxiliary air inlet groove (221), an auxiliary air ventilation channel and an auxiliary air outlet groove (223); the main air inlet groove (211) is communicated with the main air storage bin (212), and the main air outlet (213) is communicated with the main air storage bin (212); the auxiliary air inlet groove (221) is communicated with the auxiliary air outlet groove (223) through the auxiliary air communicating channel.

3. The spray gun capable of realizing multiple atomization modes according to claim 2, wherein the gun head assembly comprises a first gun head, a second gun head and a third gun head; the cross-sectional area a and the cross-sectional area B corresponding to the first lance tip are respectively specifically a1 and B1, the cross-sectional area a and the cross-sectional area B corresponding to the second lance tip are respectively specifically a2 and B2, and the cross-sectional area a and the cross-sectional area B corresponding to the third lance tip are respectively specifically A3 and B3; the values of the A1, the A2 and the A3 are all inconsistent; the values of the B1, the B2 and the B3 are all inconsistent.

4. The spray gun capable of realizing multiple atomization modes according to claim 3, wherein the auxiliary air passage is an auxiliary air vent (222), and the number and the pore size of the auxiliary air vents (222) of the first gun head and the second gun head are consistent; the number and the aperture of the auxiliary vent holes (222) of the third lance head are smaller than the number and the aperture of the auxiliary vent holes (222) of the first lance head; the number and the aperture of the auxiliary vent holes (222) of the third lance head are smaller than those of the auxiliary vent holes (222) of the second lance head.

5. A spray gun capable of achieving multiple atomization modes according to any one of claims 2-4, characterized in that two symmetrical locating parts (2121) are arranged in the main air storage bin (212); when the gun head (2) is connected with the spray gun main body (1), the positioning part (2121) is in interference fit with the head central column (13) of the spray gun main body (1).

6. A multiple atomization mode spray gun according to claim 5, characterized in that an annular gap channel (25) is arranged between the inner side of the main air storage bin (212) and the head center column (13), and the main air outlet (213) is communicated with the main air inlet groove (211) through the annular gap channel (25).

7. The spray gun capable of realizing multiple atomization modes according to claim 6, wherein the cross-sectional area of the annular gap channel (25) is defined as C, the C is the cross-sectional area for the air flow to pass through the main air storage bin (212) after the gun head (2) is assembled with the spray gun body (1), a main air storage bin flow limiting block (2122) is arranged on the inner side of the main air storage bin (212), and the main air storage bin flow limiting block (2122) is positioned in the annular gap channel (25); the main gas storage bin flow limiting block (2122) of each gun head (2) is different from the overlapping area of the cross section area C.

8. A lance capable of multiple atomization according to claim 1, wherein a seal plate (3) is mounted between the lance tip (2) and the lance body (1).

9. The spray gun capable of realizing multiple atomization modes according to claim 8, wherein: one end of the spray gun main body (1) is provided with an edge cutting (14), and the gun head (2) is provided with a step (26) matched with the edge cutting (14); the spray gun further comprises an atomizing cap (4) and a nozzle (5), wherein the atomizing cap (4) is in threaded connection with the outer side face of the gun head (2), and the nozzle (5) is connected with one end of the gun head (2); one end of each gun head (2) is provided with a first partition plate (23), and the first partition plate (23) is used for partitioning the main air channel (21) and the auxiliary air channel (22); a second partition plate (24) is arranged at the other end of the lance head (2), and the second partition plate (24) is used for partitioning the main air channel (21) and the auxiliary air channel (22); and after the nozzle (5) is connected with the gun head (2), the end surface of one end of the nozzle (5) is abutted against the second isolation plate (24).

10. The spray gun capable of realizing multiple atomization modes according to claim 8, wherein: a first positioning hole is formed in the spray gun main body (1), and a second hole corresponding to the first positioning hole is formed in the gun head (2); the lance head (2) is connected with the lance main body (1) through a positioning pin; the locating pin runs through the second hole, and the top of locating pin is located first downthehole.

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