CN218394206U - Spray gun - Google Patents

Abstract

The application discloses spray gun, including spray gun main part, spray gun body, connecting portion and scale removal subassembly. The spray gun main part is equipped with the first import of first passageway and intercommunication first passageway, liquid gets into first passageway from first import, the spray gun body is located in the first passageway, the one end that the first passageway was located to the spray gun body is equipped with first water inlet, connecting portion locate in the first passageway and lie in between first import and the first water inlet, connecting portion are equipped with first through-hole, the scale removal subassembly includes coupling mechanism and ejector pin, coupling mechanism connects the one end that first passageway deviates from the spray gun body, the ejector pin is connected in coupling mechanism and is stretched into first passageway, coupling mechanism drives the ejector pin and stretches into first through-hole, in order to descale. Through set up the ejector pin on the spray gun main part to through stretching into first through-hole with the ejector pin, carry out the scale removal to first through-hole, avoid the spray gun to block up.

Description

Spray gun

Technical Field

The application relates to the field of spraying equipment, in particular to a spray gun.

Background

When the spray gun is used, impurities in liquid easily enter a channel opening in the spray gun to precipitate and solidify, and the spray gun is easy to block due to long-term accumulation. In addition, the inner hole is small, the spray gun is easy to be blocked, the normal use of the spray gun is influenced, and the service life of the spray gun is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a lance that is capable of descaling the lance to avoid clogging of the lance.

An embodiment of the application provides a spray gun, includes spray gun main part, spray gun body, connecting portion and scale removal subassembly. The descaling device comprises a spray gun main body, a first channel, a first inlet, a spray gun pipe body, a first water inlet, a connecting part, a connecting mechanism and a mandril, wherein the spray gun main body is provided with the first channel and a first inlet communicated with the first channel, liquid enters the first channel from the first inlet, the spray gun pipe body is arranged in the first channel, the connecting part is arranged in the first channel and positioned between the first inlet and the first water inlet, the connecting part is provided with a first through hole, the descaling assembly comprises a connecting mechanism and a mandril, the connecting mechanism is connected with one end, deviating from the first channel, of the spray gun pipe body, the mandril is connected with the connecting mechanism and stretches into the first channel, and the connecting mechanism drives the mandril to stretch into the first through hole so as to descale.

The embodiment of the application comprises the following technical effects: set up the ejector pin on the spray gun main part, through stretching into first through-hole with the ejector pin, carry out the scale removal to first through-hole, avoid the spray gun to block up.

Optionally, in some embodiments of the present application, the spray gun pipe body includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are located in the first channel, the first pipeline is located in the second pipeline, a first gap is provided between the first pipeline and the second pipeline, the spray gun main body is provided with a second inlet, the second inlet is communicated with the first gap, gas enters from the second inlet into the first gap, and liquid sprayed from the first water outlet is mixed with gas and then sprayed from the second pipeline, so that the atomization effect and the impact force of liquid spraying can be increased.

Optionally, in some embodiments of the present application, an end of the first pipeline facing away from the spray gun body is provided with a first nozzle, and the first nozzle is capable of atomizing the liquid for the first time.

Optionally, in some embodiments of the present application, the second pipeline is provided with a second nozzle, the first pipeline deviates from one end of the spray gun main body and a first space is provided between the second nozzle, the first space is communicated with the first gap, the gas enters from the first gap, the first space is mixed with the liquid after the first atomization, and the second atomization is performed through the second nozzle, so as to further improve the atomization effect of the spray gun.

Optionally, in some embodiments of the present application, the first nozzle includes a nozzle main body and a first atomizing member, the nozzle main body is connected to the first pipeline, the first atomizing member is disposed in the nozzle main body, a plurality of convex portions are disposed at intervals on the periphery of the first atomizing member, and a flow dividing channel is disposed between the adjacent convex portions.

Optionally, in some embodiments of the present application, the first water outlet of the nozzle body is flared, and an edge of the end of the first atomizing member extends along a radial direction of the first atomizing member to form a stopper, where the stopper is disposed at the first water outlet.

Optionally, in some embodiments of the present application, the connecting mechanism includes a connecting body and a push rod, the connecting body connects one end of the first channel deviating from the spray gun tube body, the push rod is movably connected to the connecting body, the push rod is connected to the push rod, and the push rod can push the push rod to move, so that the push rod extends into the first through hole.

Optionally, in some embodiments of the present application, the descaling assembly includes an elastic member and a connecting block, the elastic member is disposed in the connecting mechanism, one end of the elastic member abuts against the connecting mechanism, and the other end abuts against the connecting block, the connecting block is connected to the ejector rod, and the elastic member pushes the ejector rod to partially extend into the first through hole.

Optionally, in some embodiments of the present application, the inner wall of the spray gun body is provided with a second through hole, the second through hole communicates with the second inlet, the connection mechanism is provided with a third through hole communicating with the second through hole, gas flows into the connection mechanism from the second through hole and the third through hole, and the gas drives the connection block to move, so that the connection block compresses the elastic member, and the ejector rod is withdrawn from the first through hole.

Optionally, in some embodiments of the application, an end portion of the ejector rod facing away from the connecting mechanism is partially disposed in the first through hole, and partially abuts against an edge of the first through hole, so as to close the first through hole.

Drawings

FIG. 1 illustrates a schematic view of the structure of a spray gun in one embodiment.

Fig. 2 shows a schematic cross-section of the lance in fig. 1 along II-II.

FIG. 3 illustrates a schematic cross-sectional view of the spray gun body of FIG. 2.

Figure 4 shows a schematic cross-sectional view of the lance of figure 1 along line IV-IV.

Fig. 5 is a schematic structural view of the first nozzle in one embodiment.

FIG. 6 illustrates an exploded view of the first nozzle in one embodiment.

FIG. 7 is a schematic view showing the structure of a spray gun in another embodiment.

FIG. 8 shows a schematic cross-sectional view of the lance of FIG. 7 taken along line VIII-VIII.

FIG. 9 illustrates a schematic cross-sectional view of the spray gun body of FIG. 8.

Figure 10 illustrates an enlarged view of a portion of the lance of figure 8.

FIG. 11 illustrates a cross-sectional view of the lance body with the descaling assembly exploded.

Description of the main elements

Spray gun 100

Spray gun body 10

First passage 11

First part 111

Second portion 112

Third portion 113

The first inlet 12

The first filter screen 121

Second inlet 13

Second filter 131

Spray gun tube body 20

The first water inlet 20a

First water outlet 20b

First pipeline 21

First space 21a

First nozzle 211

Nozzle body 2111

The first atomizing member 2112

Convex portion 2112a

Diversion channel 2112b

Stop 2112c

Second pipeline 22

First gap 22a

Second nozzle 221

Descaling assembly 30

Connecting mechanism 31

Second space 31a

Third space 31b

Fourth space 31c

Connecting body 311

Connecting sleeve 312

Push rod 313

Fixing member 314

Top rod 32

First rod 321

Second rod 322

Elastic member 33

Connecting block 34

Connecting part 40

First through hole 40a

First partial via 401

Second partial via 402

Second through hole 10a

Third through hole 30a

The following specific examples will further illustrate the application in conjunction with the above figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

An embodiment of the application provides a spray gun, includes spray gun main part, spray gun body, connecting portion and scale removal subassembly. The spray gun main part is equipped with the first import of first passageway and intercommunication first passageway, liquid gets into first passageway from first import, the spray gun body is located in the first passageway, the one end that the first passageway was located to the spray gun body is equipped with first water inlet, connecting portion locate in the first passageway and lie in between first import and the first water inlet, connecting portion are equipped with first through-hole, the scale removal subassembly includes coupling mechanism and ejector pin, coupling mechanism connects the one end that first passageway deviates from the spray gun body, the ejector pin is connected coupling mechanism and is stretched into in the first passageway, coupling mechanism drives the ejector pin and stretches into first through-hole, in order to descale. Set up the ejector pin on the spray gun main part, through stretching into first through-hole with the ejector pin, carry out the scale removal to first through-hole, avoid the spray gun to block up.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, in one embodiment of the present application, a spray gun 100 is provided that includes a spray gun body 10, a spray gun tube 20, a descaling assembly 30, and a connecting portion 40. The spray gun body 10 is connected to the spray gun tube 20, the connection part 40 is provided in the spray gun body 10, the connection part 40 is provided with a first through hole 40a, and liquid enters the spray gun tube 20 from the spray gun body 10, passes through the connection part 40 and is sprayed from the spray gun tube 20. The descaling assembly 30 is connected with the spray gun body 10, and the descaling assembly 30 can partially extend into the first through hole 40a to descale the first through hole 40a, so that the spray gun 100 is prevented from being blocked.

Referring also to FIG. 3, in one embodiment, the torch body 10 is provided with a first passageway 11 and a first inlet 12. The first inlet 12 communicates with the first passage 11. The first channel 11 includes a first portion 111, a second portion 112, and a third portion 113. The third portion 113 communicates the first portion 111 and the second portion 112. The spray gun tube 20 is fixedly connected to the first portion 111, and the spray gun tube 20 is provided with a first water inlet 20a and a first water outlet 20b. The descaling assembly 30 is fixedly connected to the second portion 112. The connecting portion 40 is fixedly connected to the second portion 112 and is located between the first inlet 12 and the first water inlet 20 a. The first inlet 12 is used for connecting an external liquid supply device, and liquid enters the second portion 112 in the first channel 11 from the first inlet 12, enters the first water inlet 20a through the third portion 113, and is ejected from the first water outlet 20b. In an embodiment, the connection portion 40 is screwed to the inner wall of the second portion 112, and the first through hole 40a includes a first portion through hole 401 and a second portion through hole 402, the first portion through hole 401 is close to the first inlet 12, and the second portion through hole 402 is far from the first inlet 12. The aperture of the first part of through hole 401 is smaller than that of the second part 112, and the aperture of the second part of through hole 402 is smaller than that of the first part of through hole 401. By reducing the aperture of the first part through hole 401 and the second part through hole 402, the spraying pressure of the spray gun can be increased, and the spraying effect is improved. It can be understood that, since the aperture of the second portion through hole 402 is small, impurities in the liquid are liable to be stacked in the second portion through hole 402 to form scale and block the first passage 11.

In one embodiment, the lance body 10 is further provided with a second inlet 13, the second inlet 13 communicating with the first part 111, and the second inlet 13 also communicating with the lance tube 20. The second import 13 is used for connecting outside pneumatic means, and gas is followed second import 13 and is got into spray gun body 20 in, through spouting from first delivery port 20b after mixing gas and liquid, can increase the atomization effect of spraying.

In one embodiment, the first inlet 12 is provided with a first filter 121 for filtering the impurities in the liquid to reduce the accumulation rate of impurities to form scale. In one embodiment, the second inlet 13 is provided with a second filter 131 for reducing dust and the like in the gas from entering the lance body 10 and the lance tube 20.

Referring to fig. 2 and 4, in an embodiment, the spray gun tube 20 includes a first pipe 21, and one end of the first pipe 21 is fixedly connected to the first portion 111. The first water inlet 20a is disposed at one end of the first pipeline 21 fixedly connected to the first portion 111, and the first water outlet 20b is disposed at one end of the first pipeline 21 departing from the spray gun body 10. The liquid introduced from the first inlet 12 enters the first water inlet 20a through the second portion 112, the first through hole 40a and the third portion 113, and is ejected from the first water outlet 20b.

In one embodiment, the lance body 20 further comprises a second conduit 22, and both the first conduit 21 and the second conduit 22 are partially disposed in the first passage 11. The first pipeline 21 is disposed in the second pipeline 22, a first space 21a is formed between one end of the first pipeline 21 and the second pipeline 22, and the other end of the first pipeline 21 extends out of the second pipeline 22 and is fixedly connected to the first portion 111. The second duct 22 is spaced apart from the first duct 21 to form a first gap 22a between the second duct 22 and the first duct 21, and the second inlet 13 communicates with the first gap 22a. The gas enters the first gap 22a from the second inlet 13 and flows to the first space 21a along the first gap 22a, the first space 21a is also communicated with the first water outlet 20b, the liquid sprayed from the first water outlet 20b is mixed with the gas and then sprayed from the second pipeline 22, and the atomization effect and the impact force of liquid spraying can be increased.

Referring to fig. 2, 5 and 6, in an embodiment, the first pipeline 21 is provided with a first nozzle 211, and the first nozzle 211 is connected to the first water outlet 20b. The first nozzle 211 can atomize the liquid sprayed from the first water outlet 20b for the first time, and then mix with the gas to spray the liquid, thereby further improving the atomization effect of the spray gun 100. The first nozzle 211 includes a nozzle body 2111 and a first atomizing member 2112, the nozzle body 2111 connecting to an end of the first conduit 21 facing away from the torch body 10, the first atomizing member 2112 being disposed within the nozzle body 2111. The first atomizing member 2112 has a plurality of protrusions 2112a provided at intervals on the outer periphery thereof, a flow dividing passage 2112b is formed between adjacent protrusions 2112a, and the liquid in the first conduit 21 is divided by the plurality of flow dividing passages 2112 b. When the first pipeline 21 is provided with the first nozzle 211, the first water outlet 20b is arranged on the first nozzle 211, the first water outlet 20b of the first nozzle 211 is flared, the edge of the end of the first atomizing element 2112 extends along the radial direction thereof to form a stopping portion 2112c, and the stopping portion 2112c is arranged at the first water outlet 20b. The first water outlet 20b of the first nozzle 211 is formed in a flared shape, and the stopper 2112c is provided in the first water outlet 20b, whereby the liquid ejected from the first tube 21 is atomized for the first time.

In an embodiment, the second pipeline 22 is provided with a second nozzle 221, the liquid and the gas after the first atomization are mixed and then sprayed out from the second nozzle 221, and the second nozzle 221 is used for carrying out second atomization on the liquid after the first atomization, so as to further improve the atomization effect of the spray gun 100.

Referring to fig. 2, the descaling assembly 30 includes a connecting mechanism 31 and a rod 32, the connecting mechanism 31 is connected to the second portion 112, the rod 32 is connected to the connecting mechanism 31 and extends into the through hole 401 of the first portion, the connecting mechanism 31 can drive the rod 32 to move, so that the rod 32 extends into the through hole 402 of the second portion to remove the scale in the through hole 402 of the second portion.

In one embodiment, the connecting mechanism 31 includes a connecting body 311, a connecting sleeve 312 and a push rod 313, one end of the connecting body 311 is connected with the second portion 112, the other end extends out of the first passage 11 and is connected with the connecting sleeve 312, and a second space 31a is formed between the connecting sleeve 312 and the connecting body 311. One end of the push rod 313 is disposed in the second space 31a, and the other end extends out of the connection sleeve 312, so that the push rod 313 can move relative to the connection sleeve 312. The plunger 32 has one end fixedly connected to the push rod 313 and the other end penetrating through the connecting body 311 and extending into the second portion 112.

In one embodiment, the connecting mechanism 31 further includes a fixing member 314, the fixing member 314 is fixedly connected to the central position of the connecting body 311, the push rod 32 passes through the fixing member 314 and the connecting body 311 and extends into the second portion 112, and the fixing member 314 increases the stability of the movement of the push rod 32.

In one embodiment, the top bar 32 includes a first bar 321 and a second bar 322, and the first bar 321 connects the push bar 313 and the second bar 322. The first rod 321 passes through the fixing member 314 and the connecting body 311, and the second rod 322 is disposed in the first through hole 40a. The outer diameter of the first rod 321 is larger than that of the second rod 322, and the outer diameter of the first rod 321 is smaller than the diameter of the second partial through hole 402. When the push rod 313 is not pushed, the second rod 322 is disposed in the first partial through hole 401 or away from the first partial through hole 401, and when the push rod 313 is pushed to drive the push rod 32 to move, the second rod 322 is disposed in the second partial through hole 402 and the first rod 321 is disposed in the first partial through hole 401. In one embodiment, when the second rod 322 is disposed in the second partial through hole 402, the outer wall of the second rod 322 is in contact with the inner wall of the second partial through hole 402.

The spray gun 100 in the above embodiment removes the scale in the second partial through hole 402 by pushing the push rod 313 to make the push rod 313 drive the push rod 32 to move towards the connecting portion 40 and make the push rod 313 extend into the second partial through hole 402. By pulling the push rod 313, the push rod 313 drives the push rod 32 away from the connecting part 40, and the push rod 313 retracts from the second part through hole 402. The above operations are repeated to remove the scale in the second portion of the through holes 402, thereby preventing the spray gun 100 from being blocked.

Referring to fig. 7, 8, 9 and 10, another embodiment of the present application provides a lance 100 including a lance body 10, a lance tube 20, a coupling portion 40 and a descaling assembly 30. The spray gun body 10 is connected to the spray gun tube 20, the connection part 40 is provided in the spray gun body 10, the connection part 40 is provided with a first through hole 40a, and liquid enters the spray gun tube 20 from the spray gun body 10, passes through the connection part 40 and is sprayed from the spray gun tube 20. The descaling assembly 30 is connected with the spray gun main body 10, and the descaling assembly 30 can partially extend into the first through hole 40a to descale the first through hole 40a, so that the spray gun 100 is prevented from being blocked. In one embodiment, the structure of the lance tube 20 is the same as the structure of the lance tube 20 in the previous embodiment.

In one embodiment, the spraygun body 10 is provided with a first passage 11 and a first inlet 12. The first inlet 12 communicates with the first passage 11. The first channel 11 comprises a first portion 111 and a second portion 112. The lance body 20 is fixedly attached to the first section 111 and the descaling assembly 30 is fixedly attached to the second section 112. The connector 40 is partially fixedly connected to the lance tube body 20 and partially disposed in the second portion 112. The connection portion 40 is provided with a first through hole 40a, and the first through hole 40a communicates the first portion 111 and the second portion 112. The first inlet 12 is used for connecting an external liquid supply device, and liquid enters the second portion 112 in the first passage 11 from the first inlet 12, enters the first water inlet 20a through the first through hole 40a, and is ejected from the first water outlet 20b. The aperture of first through-hole 40a is less than the aperture of second portion 112, through reducing the aperture of first through-hole 40a, can increase the pressure that the spray gun sprayed, promotes and sprays the effect. It can be understood that, since the aperture of the first through hole 40a is small, impurities in the liquid are easily stacked in the first through hole 40a to form scale and block the first passage 11.

In one embodiment, the lance body 10 is further provided with a second inlet 13, the second inlet 13 communicating with the first part 111, and the second inlet 13 also communicating with the lance tube 20. The second import 13 is used for connecting outside pneumatic means, and gas is followed second import 13 and is got into spray gun body 20 in, through spouting from first delivery port 20b after mixing gas and liquid, can increase the atomization effect of spraying.

In one embodiment, the first inlet 12 is provided with a first filter 121 for filtering the impurities in the liquid to reduce the accumulation rate of impurities to form scale. In one embodiment, the second inlet 13 is provided with a second filter 131 for reducing dust and the like in the gas from entering the lance body 10 and the lance tube 20.

In one embodiment, the inner wall of the torch body 10 is provided with a second through hole 10a, one end of the second through hole 10a is opened in the first portion 111 and communicated with the second inlet 13, the other end of the second through hole 10a is opened in the second portion 112, and the descaling assembly 30 is provided in the second portion 112 and provided with a third through hole 30a communicated with the second through hole 10 a. Part of the gas entering from the second inlet 13 flows from the second through hole 10a into the third through hole 30a and acts on the descaling assembly 30 to keep the descaling assembly 30 away from the first through hole 40a.

In one embodiment, the descaling assembly 30 includes a connecting mechanism 31, a ram 32, an elastic member 33, and a connecting block 34. The connecting mechanism 31 is connected with the second part 112, the push rod 32 is connected with the connecting mechanism 31 and extends into the second part 112, the connecting block 34 is connected with the push rod 32, the elastic member 33 is arranged in the connecting mechanism 31, one end of the elastic member 33 abuts against the connecting mechanism 31, the other end abuts against the connecting block 34, the connecting block 34 is pushed by the elasticity of the elastic member 33, and the connecting block 34 drives the push rod 32 to move, so that the push rod 32 extends into the first through hole 40a. The connection block 34 may increase a contact area with the gas so that the connection block 34 is pushed by the high-pressure gas to compress the elastic member 33.

In one embodiment, the connection mechanism 31 includes a connection body 311 and a connection sleeve 312. The connecting body 311 has one end connected to the second portion 112 and the other end extending out of the first passage 11 and connected to the connecting sleeve 312. The connecting body 311 has a third space 31b with the inner wall of the second portion 112. The connection sleeve 312 and the connection body 311 have a fourth space 31c therebetween. The third through hole 30a penetrates the connecting body 311 to communicate the third space 31b with the fourth space 31c. One end of the push rod 32 is disposed in the second portion 112, the other end passes through the connecting body 311 and is disposed in the fourth space 31c, the connecting block 34 is connected to the push rod 32, one end of the elastic member 33 abuts against the connecting block 34, and the other end abuts against the inner wall of the connecting sleeve 312. When the spray gun 100 is not in use, the elastic force of the elastic member 33 pushes the connecting block 34 to move in the fourth space 31c and drives the top rod 32 to move, so that the top rod 32 is partially arranged in the first through hole 40a to descale the first through hole 40a, and due to the continuous action of the elastic force of the elastic member 33, the part of the top rod 32 is kept in the first through hole 40a. When the spray gun 100 is used, part of the gas entering from the second inlet 13 flows from the second through hole 10a to the third space 31b, flows from the third space 31b to the third through hole 30a, flows from the third through hole 30a to the fourth space 31c, acts on the connecting block 34, the connecting block 34 is moved away from the second part 112 by the pressure of the gas, the elastic member 33 is compressed, the ejector rod 32 is driven to be away from the first through hole 40a, the first channel 11 is kept open, and the liquid entering from the first inlet 12 enters from the second part 112, flows through the first through hole 40a, enters the first water inlet 20a, and is ejected from the first water outlet 20b.

In an embodiment, a portion of the end of the top rod 32 facing away from the connecting block 34 is disposed in the first through hole 40a and abuts against an edge of the first through hole 40a, so that when the spray gun 100 is not in use, the first through hole 40a is closed to prevent impurities from entering. Optionally, the end of the ram 32 facing away from the connector block 34 is conically configured.

In another embodiment, when the rod 32 is disposed in the first through hole 40a, the outer wall of the rod 32 contacts and connects with the inner wall of the first through hole 40a, so that the rod 32 partially extends out of the first through hole 40a, and further scale in the first through hole 40a can be cleaned.

When the spray gun 100 of the above embodiment is not used, the elastic force of the elastic member 33 pushes the connecting block 34 to move in the fourth space 31c and drive the top rod 32 to move, so that the top rod 32 is partially disposed in the first through hole 40a to descale the first through hole 40a, and due to the continuous action of the elastic force of the elastic member 33, the portion of the top rod 32 is kept in the first through hole 40a to close the first through hole 40a. When the spray gun 100 is used, part of gas entering from the second inlet 13 flows from the second through hole 10a to the third space 31b, flows from the third space 31b to the third through hole 30a, flows from the third through hole 30a to the fourth space 31c, acts on the connecting block 34, the connecting block 34 is moved in a direction away from the second part 112 by the pressure of the gas, and compresses the elastic member 33, and further drives the ejector rod 32 to be away from the first through hole 40a, so that the first channel 11 is kept open, the liquid entering from the first inlet 12 enters from the second part 112, flows through the first through hole 40a, enters the first water inlet 20a, and is sprayed out from the first water outlet 20b, and the first spray nozzle 211 and the second spray nozzle 221 arranged on the spray gun body 20 perform first atomization and second atomization on the liquid.

The utility model provides a spray gun 100 is through setting up ejector pin 32 on spray gun main part 10, through stretching into first through-hole 40a with ejector pin 32, carries out the scale removal to first through-hole 40a, avoids the spray gun to block up, promotes spray gun 100's life.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not to be taken as limiting the present application, and that suitable changes and modifications to the above embodiments are within the scope of the present disclosure as long as they are within the spirit and scope of the present application.

Claims (10)

1. A spray gun, comprising:

the spray gun comprises a spray gun body and a spray gun body, wherein the spray gun body is provided with a first passage and a first inlet communicated with the first passage, and liquid can enter the first passage from the first inlet;

it is characterized in that the spray gun further comprises:

the spray gun pipe body is arranged in the first channel, and a first water inlet is formed in one end, arranged in the first channel, of the spray gun pipe body;

the connecting part is arranged in the first channel and positioned between the first inlet and the first water inlet, and the connecting part is provided with a first through hole; and

a descaling assembly comprising:

the connecting mechanism is connected with one end of the first channel, which is far away from the spray gun pipe body; and

and the ejector rod is connected with the connecting mechanism and extends into the first channel, and the connecting mechanism drives the ejector rod to extend into the first through hole.

2. The lance of claim 1, wherein the lance body includes a first conduit and a second conduit, the first conduit and the second conduit being disposed in the first passage, the first conduit being disposed in the second conduit with a first gap therebetween, the lance body being provided with a second inlet, the second inlet communicating with the first gap, gas entering the first gap from the second inlet.

3. The spray gun of claim 2 wherein an end of said first conduit remote from said spray gun body is provided with a first nozzle capable of first atomizing said liquid.

4. The spray gun of claim 3 wherein said second conduit is provided with a second nozzle, a first space is provided between an end of said first conduit facing away from said spray gun body and said second nozzle, said first space communicates with said first gap, said gas enters said first space from said first gap, mixes with the first atomized liquid, and is atomized for a second time through said second nozzle.

5. The spray gun of claim 3 wherein said first nozzle includes a nozzle body and a first atomizing member, said nozzle body is connected to said first conduit, said first atomizing member is disposed in said nozzle body, said first atomizing member has a plurality of protrusions spaced apart from each other on an outer periphery thereof, and a flow dividing passage is disposed between adjacent protrusions.

6. The spray gun of claim 5 wherein the first water outlet of the nozzle body is flared, and the edge of the end of the first atomizing member extends radially to form a stop, the stop being disposed at the first water outlet.

7. The spray gun of claim 1 wherein said connecting mechanism includes a connecting body and a push rod, said connecting body connects to an end of said first passageway that faces away from said spray gun barrel, said push rod is movably connected to said connecting body, said push rod connects to said push rod, said push rod can push said push rod to move, making said push rod extend into said first through hole.

8. The spray gun of claim 2 wherein said descaling assembly includes an elastic member and a connecting block, said elastic member is disposed in said connecting mechanism, one end of said elastic member abuts against said connecting mechanism, the other end abuts against said connecting block, said connecting block is connected to said push rod, said elastic member pushes said push rod to make part of said push rod extend into said first through hole.

9. The spray gun of claim 8 wherein the interior wall of the spray gun body defines a second opening communicating with the second inlet, the connection mechanism defines a third opening communicating with the second opening, and gas flows from the second opening and the third opening into the connection mechanism, the gas moving the connecting block to cause the connecting block to compress the resilient member and to cause the ram to withdraw from the first opening.

10. The spray gun of claim 9 wherein an end of the ram facing away from the attachment mechanism is partially disposed in the first through hole and partially abuts against an edge of the first through hole to close the first through hole.

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