CN211099654U

CN211099654U - Spray gun for optimizing spraying operation

Info

Publication number: CN211099654U
Application number: CN201921439794.6U
Authority: CN
Inventors: 林乐; 林万军; 刘少生
Original assignee: CSCEC Strait Construction and Development Co Ltd
Current assignee: CSCEC Strait Construction and Development Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-07-28
Anticipated expiration: 2029-09-02

Abstract

The utility model relates to an optimize spray gun of spraying operation, including body of a gun, hood, nozzle and trigger, the hood is connected at the muzzle end of body of a gun, is equipped with the gas-liquid mixing chamber on the hood, is used for cavity and the air current flow path of holding nozzle, and the front end of hood is located to the gas-liquid mixing chamber just the gas-liquid mixing chamber surface is equipped with the atomizing hole that is used for spun coating, and the nozzle is located in the cavity, the spout and the air current flow path of nozzle all communicate with the gas-liquid mixing chamber, the body of a gun inside be equipped with first pipeline, second pipeline and with the air inlet pipe way of outside air supply intercommunication, air inlet pipe way intercommunication first pipeline and second pipeline, second pipeline intercommunication air current flow path, the nearly hood end of first pipeline pass through adapter horizontal connection nozzle and vertical connection feed line are equipped with flow control mechanism in the intraductal of first pipeline. The utility model discloses not only atomization effect is good, can change the spraying figure according to the spraying demand moreover, possesses the distance when the spraying and detects the function, practices thrift coating.

Description

Spray gun for optimizing spraying operation

Technical Field

The utility model relates to an optimize spray gun of spraying operation belongs to the spray gun field.

Background

The spray gun is a device which utilizes liquid or compressed air to rapidly release as power and is mainly applied to the fields of building spraying, vehicle spraying, metal spraying, plastic spraying, wood product spraying, industrial spraying, nano material spraying, artistic spraying and the like. The spray gun disperses the coating into uniform and fine droplets by means of pressure or centrifugal force, and applies the droplets to the surface of the object to be coated. However, the prior spray gun has the following problems during spraying: 1. the paint and the dynamic air are not sufficiently mixed, and the atomization effect is poor; 2. during spraying, the spray shape cannot be adjusted according to a spraying object, for example, for large-area spraying, the spray width cannot be changed; 3. the optimal spraying distance cannot be judged during spraying, and the distance between the spray gun and the sprayed component is judged only by the experience of operators, so that the spraying effect is poor and unnecessary waste is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an optimize spray gun of spraying operation, it is not only atomization effect good, can change the spraying figure according to the spraying demand moreover, possesses the distance and detects the function when the spraying, practices thrift coating.

The technical scheme of the utility model as follows:

the utility model provides a spray gun of spraying operation optimizes, includes body of a gun, hood, nozzle and trigger, the muzzle end at the body of a gun is connected to the hood, the trigger wears to locate the well rear portion of body of a gun perpendicularly, be equipped with gas-liquid mixing chamber on the hood, be used for holding cavity and the air current flow path of nozzle, the front end that the hood was located to the gas-liquid mixing chamber just the gas-liquid mixing chamber surface is equipped with the atomizing hole that is used for the spun coating, the nozzle is located in the cavity, the spout and the air current flow path of nozzle all with the gas-liquid mixing chamber intercommunication, the body of a gun inside be equipped with first pipeline, second pipeline and with the air inlet pipe way of outside air supply intercommunication, the air inlet pipe way intercommunication first pipeline and second pipeline, the second pipeline intercommunication the air current flow path, the nearly hood end of first pipeline passes through adapter horizontal connection the nozzle and vertical connection feed line, and a flow regulating mechanism is arranged in the pipe of the first pipeline, and the spraying amount of the nozzle is regulated by the flow regulating mechanism.

Preferably, the hood is symmetrically provided with two extending portions, the two extending portions are located at the front portion of the gas-liquid mixing chamber, each extending portion is provided with a plurality of fan control holes, the fan control hole of one extending portion is communicated with the airflow flow path, and the fan control hole of the other extending portion is communicated with the gas-liquid mixing chamber.

Preferably, a spray pattern adjusting mechanism is arranged in the second pipeline and comprises a plug, a connecting rod and an image adjusting knob which are connected in sequence, the plug is located at the air inlet of the airflow flow path, and the image adjusting knob is located outside the gun body.

More preferably, the atomization holes comprise a central atomization hole and auxiliary atomization holes, and the diameters of the auxiliary atomization holes are smaller than that of the central atomization hole.

Preferably, the flow adjusting mechanism comprises a gun needle, a needle valve rod, a first spring and a flow adjusting knob, wherein a needle head of the gun needle penetrates through the adapter and is positioned at a nozzle of the nozzle, the tail end of the gun needle penetrates through the trigger and is connected with the needle valve rod, and the needle valve rod is connected with the flow adjusting knob through the first spring; the needle valve rod is fixed with a limiting part near the trigger end, the limiting part is abutted against the rear part of the trigger, the trigger is pulled to drive the gun needle to move backwards, so that the gun needle leaves the nozzle, and the flow adjusting knob is located outside the gun body.

Preferably, the rear end face of adapter sets up one and prevents that coating from flowing into the filter screen packing ring of first pipeline, the rifle needle passes the filter screen packing ring.

Preferably, the air inlet pipeline is arranged at the handle part of the gun body, an air valve mechanism is arranged on the air inlet pipeline and close to the air inlet of the air inlet pipeline, the air valve mechanism comprises a valve cavity, an air valve rod, an air valve seat and a second spring, the valve cavity and the air inlet pipeline are vertically arranged and are communicated with each other, the opening of the valve cavity is positioned on the shell of the gun body and is positioned behind the trigger, the head of the air valve rod is exposed out of the gun body through the opening of the valve cavity, the tail part of the air valve rod is connected with the second spring, the second spring is abutted against the inner wall of the valve cavity, the air valve seat is sleeved on the periphery of the air valve rod and is fixed at the tail end of the air valve rod, the air valve rod slides in the valve cavity under the driving of the trigger.

Preferably, still include an air intake branch in the body of a gun, the one end of air intake branch is connected outside air supply, and the other end intercommunication the air inlet pipeline, the intercommunication department of air intake branch and air inlet pipeline is equipped with the air pressure governing valve.

Preferably, the spray gun further comprises a distance sensing alarm mechanism, the distance sensing alarm mechanism comprises an infrared sensor, a processor, an alarm circuit module and a battery, the processor, the alarm circuit module and the battery are arranged in the gun body, the infrared sensor is fixed above the gun body and close to the hood, the infrared sensor is connected with the processor, the processor is connected with the alarm circuit module, and the battery supplies power to the infrared sensor, the processor and the alarm circuit module.

The utility model discloses following beneficial effect has:

the utility model provides an optimize spraying operation's spray gun, its carries compressed air to the gas-liquid mixture intracavity through second pipeline, air current flow path, has promoted the atomization effect of coating greatly, and adjusts control coating spraying shape and range through spraying figure adjustment mechanism, through the distance between response alarm mechanism real-time detection spray gun and the sprayed thing, improves the spraying effect, prevents that coating is extravagant.

Drawings

Fig. 1 is a schematic structural view of a spray gun for optimizing spraying operation according to the present invention;

fig. 2 is a schematic structural view of a blast cap of a spray gun for optimizing spraying operation according to the present invention;

FIG. 3 is a schematic structural view of a nozzle of a spray gun for optimizing a spraying operation according to the present invention;

FIG. 4 is a schematic structural view of a spray pattern adjusting mechanism of the present invention;

FIG. 5 is a schematic structural view of the middle flow rate adjusting mechanism of the present invention;

fig. 6 is a schematic view of the air valve mechanism of the present invention;

fig. 7 is a schematic view of an embodiment of the middle distance sensing alarm mechanism of the present invention.

The reference numbers in the figures denote:

10. a gun body; 11. a first pipeline; 12. a second pipeline; 13. an air intake line; 131. an air inlet of the air inlet pipeline; 14. a feed line; 132. an intake branch pipe; 20. a hood; 30. a nozzle; 31. a spout; 32. an adapter; 321. a filter screen gasket; 40. a trigger; 50. a flow rate adjusting mechanism; 60. a spray pattern adjusting mechanism; 70. an air valve mechanism; 80. an air pressure regulating valve; 90. a distance sensing alarm mechanism; 21. a gas-liquid mixing chamber; 22. a cavity; 23. an airflow path; 231. an airflow path inlet; 24. an atomization orifice; 241. a central atomization orifice; 242. an auxiliary atomization hole; 25. an extension portion; 251. a sector control hole; 51. a gun needle; 52. a needle valve stem; 53. a first spring; 54. a flow adjustment knob; 55. a limiting member; 61. a plug; 62. a connecting rod; 63. a graphic adjustment knob; 71. a valve cavity; 72. an air valve stem; 73. an air valve seat; 74. a second spring; 75. a seal ring; 91. an infrared sensor; 92. a processor; 93. an alarm circuit module; 94. a battery.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, 2 and 3, a spray gun for optimizing spraying operation includes a gun body 10, a hood 20, a nozzle 30 and a trigger 40, the hood 20 is connected to a mouth end of the gun body 10, the trigger 40 vertically penetrates through a middle rear portion of the gun body 10, the hood 20 is provided with a gas-liquid mixing chamber 21, a cavity 22 for accommodating the nozzle 30 and an airflow path 23, the gas-liquid mixing chamber 21 is arranged at a front end of the hood 20, an atomization hole 24 for spraying out a coating is arranged on a surface of the gas-liquid mixing chamber 21, the nozzle 30 is arranged in the cavity 22, a spout 31 and the airflow path 23 of the nozzle 30 are both communicated with the gas-liquid mixing chamber 21, a first pipeline 11, a second pipeline 12 and an air inlet pipeline 13 communicated with an external air source are arranged inside the gun body 10, the air inlet pipeline 13 is communicated with the first pipeline 11 and the second pipeline 12, the second pipeline 12 is communicated with the airflow path 23, nearly hood 20 end of first pipeline 11 passes through adapter 32 horizontal connection nozzle 30 and vertical connection feed line 14, and feed line 14 connects outside coating flow path, first pipeline 11 is intraductal to be equipped with flow control mechanism 50, and trigger 40 control flow control mechanism 50 is in fore-and-aft movement in the first pipeline 11 controls the switching of nozzle 30 spout 31.

Referring to fig. 2, two extending portions 25 are symmetrically disposed on the hood 20, the two extending portions 25 are located at the front portion of the gas-liquid mixing chamber 21, and a plurality of fan control holes 251 are disposed on each extending portion 25, wherein the fan control hole 251 of one extending portion 25 is communicated with the airflow path 23, and the fan control hole 251 of the other extending portion 25 is communicated with the gas-liquid mixing chamber 21. The atomization holes 24 include a central atomization hole 241 and auxiliary atomization holes 242, and the diameters of the auxiliary atomization holes 242 are smaller than the diameter of the central atomization hole 241. The coating liquid column is broken into fine liquid droplets in the gas-liquid mixing chamber 21 between the nozzle 31 and the central atomization hole 241, and first-stage atomization is formed. The aperture of the auxiliary atomization holes 242 is smaller, and secondary atomization is formed on the atomized mist of the first stage, so that the atomization effect is improved. The air column at the outlet of the sector control hole 251 controls the forming angle of the atomizing airflow, changes the atomizing from round to oval, is favorable for improving the atomizing efficiency of the atomizing effect level, and can set the boundary condition of the sector control hole 251 to control the ellipticity of the atomizing.

Referring to fig. 4, a spray pattern adjusting mechanism 60 is disposed in the second pipeline 12, the spray pattern adjusting mechanism 60 includes a plug 61, a connecting rod 62 and a pattern adjusting knob 63, which are connected in sequence, the plug 61 is located at an air inlet 231 of the airflow path, and the pattern adjusting knob 63 is located outside the gun body 10. The degree of blocking or opening of the valve stem plug 61 and the gas flow path 23 is controlled by the pattern adjusting knob 63, so that the gas pressure and the gas flow rate supplied to the gas flow path 23 are controlled, and the coating spraying shape and amplitude are controlled: if the valve is fully open the width of the sector will be maximum and if the valve is closed the spray area will be circular or the size will be minimum.

Referring to fig. 5, the flow adjusting mechanism 50 includes a gun needle 51, a needle stem 52, a first spring 53 and a flow adjusting knob 54, a needle head of the gun needle 51 passes through the adapter 32 and is located at the nozzle opening 31 of the nozzle 30, a distal end of the gun needle 51 passes through the trigger 40 and is connected to the needle stem 52, and the needle stem 52 is connected to the flow adjusting knob 54 through the first spring 53; the needle valve rod 52 is fixed with a limiting piece 55 near the trigger 40, the limiting piece 55 is abutted against the rear of the trigger 40, the trigger 40 is pulled to drive the gun needle 51 to move backwards, so that the gun needle 51 leaves the nozzle 31, and the flow adjusting knob 54 is positioned outside the gun body 10. The rear end face of the adapter 32 is provided with a filter screen gasket 321 for preventing the paint from flowing into the first pipeline 11, and the gun needle 51 penetrates through the filter screen gasket 321. The mechanical pressure of the gun needle 51 on the nozzle 30 is changed by changing the pressing degree of the first spring 53 through the flow rate adjusting knob 54, so that the opening degrees of the gun needle 51 and the nozzle opening 31 are adjusted, and the flow rate of the coating is adjusted. The trigger 40 drives the needle stem rearward and the gun needle 51 moves away from the nozzle 30 to press the nozzle 30 against it to eject the paint.

Referring to fig. 1 and 6, the air inlet pipeline 13 is disposed at a handle portion of the gun body 10, an air valve mechanism 70 is disposed on the air inlet pipeline 13 near an air inlet 131 of the air inlet pipeline, the air valve mechanism 70 includes a valve cavity 71, an air valve rod 72, an air valve seat 73 and a second spring 74, generally, the air valve rod 72 and the air valve seat 73 are engaged with each other through a sealing ring 75 (e.g., an O-ring), the valve cavity 71 is disposed perpendicular to and in communication with the air inlet pipeline 13, an opening of the valve cavity 71 is disposed on a housing of the gun body 10 and behind the trigger 40, a head of the air valve rod 72 is exposed out of the gun body 10 through the opening of the valve cavity 71, a tail of the air valve rod 72 is connected to the second spring 74, the second spring 74 abuts against an inner wall of the valve cavity 71, the air valve seat 73 is disposed on an outer periphery of the air valve rod 72 and fixed at a terminal, the air valve rod 72 slides in the valve cavity 71 under the driving of the trigger 40, and the air valve seat 73 blocks or opens the air inlet pipeline 13. The air valve mechanism 70 is linked with the trigger 40 to realize the air intake control of the air flow. The gun body 10 further comprises an air inlet branch pipe 132, one end of the air inlet branch pipe 132 is connected with an external air source, the other end of the air inlet branch pipe 132 is communicated with the air inlet pipeline 13, and an air pressure regulating valve 80 is arranged at the communication position of the air inlet branch pipe 132 and the air inlet pipeline 13. The adjusting knob of the air pressure adjusting valve 80 is rotated anticlockwise, air entering the air flow path is increased, the spraying distance is increased, and the discharging amount and the spraying area are increased at the same time; the air entering the gas flow path is reduced by clockwise rotation, the spraying distance is shortened, and the discharge amount and the spraying area are reduced simultaneously; no air is present during screwing.

Referring to fig. 1, the spray gun further includes a distance sensing alarm mechanism 90, which includes an infrared sensor 91, a processor 92, an alarm circuit module 93 and a battery 94, the infrared sensor 91 is fixed above the gun body 10 and close to the hood 20, the infrared sensor 91 is connected to the processor 92, the processor 92 is connected to the alarm circuit module 93, the battery 94 supplies power to the infrared sensor 91, the processor 92 and the alarm circuit module 93, the infrared sensor 91 transmits a sensed distance signal to the central processor 92, when the processor 92 determines that the distance exceeds a preset spraying distance range, the processor 92 transmits a signal to control the alarm circuit module 93 to issue an alarm to remind a user, referring to fig. 7, the distance sensing alarm mechanism 90 may employ an STC89C51 single chip microcomputer, select a 5V active buzzer and a highlight L as an audible and visual alarm element, the main controller controls an audible and visual alarm through I/O ports P16 and P17, the main controller further controls an audible and visual alarm through an I/O port P16 and a P5634, the main controller outputs an audible and audible alarm sound when the infrared sensor 91 is in a low frequency state, the infrared alarm frequency, the infrared sensor 91 outputs a buzzer 3526, and a buzzer 3528 outputs a high alarm frequency signal, and a buzzer frequency, when the infrared sensor outputs a buzzer frequency exceeds a low alarm frequency, and a buzzer frequency when the alarm frequency is set accordingly, and a buzzer frequency is higher alarm frequency is set accordingly, the alarm frequency is higher alarm frequency is set accordingly, the.

The utility model discloses a theory of operation: during spraying operation, the trigger 40 is pulled to drive the gun needle 51 of the flow adjusting mechanism 50 to move backwards, the nozzle 31 on the nozzle 30 is opened, meanwhile, the trigger 40 drives the air valve rod 72 of the air valve mechanism 70, the air valve rod 72 drives the air valve seat 73 to press the second spring 74 backwards, after the air valve seat 73 originally blocked on the air inlet pipeline 13 moves backwards, the air inlet pipeline 13 is communicated, compressed air from the outside enters the air inlet pipeline 13, and the air inflow of the compressed air can be adjusted through the air pressure adjusting valve 80. Compressed air simultaneously enters the first pipeline 11 and the second pipeline 12, the compressed air on the first pipeline 11 passes through the adapter 32 and enters the nozzle 30 to push the coating in the nozzle 30 to rapidly flow to the nozzle 31 and enter the gas-liquid mixing chamber 21, and meanwhile, the compressed air from the second pipeline 12 enters the gas-liquid mixing chamber 21 and the fan control hole 251 through the airflow flow path 23, so that the coating is rapidly crushed into fine liquid drops to form first-stage atomization. The coating after the atomizing is simultaneously through central atomization hole 241 and supplementary atomization hole 242 blowout, because supplementary atomization hole 242 radius is littleer, can form the second grade atomizing to the atomizing after the first order atomizing, improves atomization effect. The outlet air column of the sector control hole 251 controls the forming angle of the atomized air flow, so that the atomized air changes from a circle to an ellipse. The infrared sensor 91 transmits the sensed distance signal to the central processing unit 92, and when the processor 92 judges that the distance exceeds the preset spraying distance range, the processor sends a signal to control the alarm circuit module 93 to send an alarm prompt.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides an optimize spray gun of spraying operation, includes body of a gun (10), hood (20), nozzle (30) and trigger (40), the muzzle end at body of a gun (10) is connected in hood (20), the well rear portion of body of a gun (10) is worn to locate perpendicularly in trigger (40), its characterized in that: be equipped with gas-liquid mixing chamber (21), cavity (22) and air current flow path (23) that are used for holding nozzle (30) on hood (20), the front end of hood (20) is located in gas-liquid mixing chamber (21) just gas-liquid mixing chamber (21) surface is equipped with atomizing hole (24) that are used for the blowout coating, nozzle (30) are located in cavity (22), spout (31) and air current flow path (23) of nozzle (30) all with gas-liquid mixing chamber (21) intercommunication, body of a gun (10) inside is equipped with first pipeline (11), second pipeline (12) and air inlet pipeline (13) with outside air supply intercommunication, air inlet pipeline (13) intercommunication first pipeline (11) and second pipeline (12), second pipeline (12) intercommunication air current flow path (23), the nearly hood (20) end of first pipeline (11) passes through adapter (32) horizontal connection nozzle (30) and vertical connection feed line (14), a flow regulating mechanism (50) is arranged in the first pipeline (11), and the spraying amount of the nozzle (30) is regulated through the flow regulating mechanism (50).

2. A spray gun for optimizing painting operations according to claim 1, further comprising: the blast cap (20) is symmetrically provided with two extending parts (25), the two extending parts (25) are positioned at the front part of the gas-liquid mixing cavity (21), each extending part (25) is provided with a plurality of fan surface control holes (251), the fan surface control hole (251) of one extending part (25) is communicated with the airflow flow path (23), and the fan surface control hole (251) of the other extending part (25) is communicated with the gas-liquid mixing cavity (21).

3. A spray gun for optimizing painting operations according to claim 2, further comprising: be equipped with spraying figure adjustment mechanism (60) in second pipeline (12), spraying figure adjustment mechanism (60) are including end cap (61), connecting rod (62) and figure adjusting knob (63) that connect in order, end cap (61) are located air current flow path air inlet (231) department, figure adjusting knob (63) are located the outside of body of a gun (10).

4. A spray gun for optimizing painting operations according to claim 1, further comprising: the atomization holes (24) comprise a central atomization hole (241) and auxiliary atomization holes (242), and the diameters of the auxiliary atomization holes (242) are smaller than the diameter of the central atomization hole (241).

5. A spray gun for optimizing painting operations according to claim 1, further comprising: the flow adjusting mechanism (50) comprises a gun needle (51), a needle valve rod (52), a first spring (53) and a flow adjusting knob (54), wherein the needle head of the gun needle (51) penetrates through the adapter (32) and is positioned at the nozzle (31) of the nozzle (30), the tail end of the gun needle (51) penetrates through the trigger (40) and is connected with the needle valve rod (52), and the needle valve rod (52) is connected with the flow adjusting knob (54) through the first spring (53); the needle valve rod (52) is fixed with a limiting piece (55) near the trigger (40), the limiting piece (55) is abutted against the rear of the trigger (40), the trigger (40) is pulled to drive the gun needle (51) to move backwards, the gun needle (51) is separated from the nozzle (31), and the flow adjusting knob (54) is located outside the gun body (10).

6. A spray gun for optimizing painting operations according to claim 5, further comprising: the rear end face of adapter (32) sets up one and prevents that coating from flowing into filter screen packing ring (321) of first pipeline (11), rifle needle (51) pass filter screen packing ring (321).

7. A spray gun for optimizing painting operations according to claim 1, further comprising: the air inlet pipeline (13) is arranged at the handle part of the gun body (10), an air valve mechanism (70) is arranged on the air inlet pipeline (13) and close to an air inlet (131) of the air inlet pipeline, the air valve mechanism (70) comprises a valve cavity (71), an air valve rod (72), an air valve seat (73) and a second spring (74), the valve cavity (71) and the air inlet pipeline (13) are vertically arranged and are communicated with each other, an opening of the valve cavity (71) is positioned on a shell of the gun body (10) and behind the trigger (40), the head of the air valve rod (72) is exposed out of the gun body (10) through the opening of the valve cavity (71), the tail part of the air valve rod (72) is connected with the second spring (74), the second spring (74) abuts against the inner wall of the valve cavity (71), the air valve seat (73) is sleeved on the periphery of the air valve rod (72) and is fixed at the tail end of the air valve rod (, the air valve rod (72) slides in the valve cavity (71) under the driving of the trigger (40), and the air valve seat (73) blocks or opens the air inlet pipeline (13).

8. A spray gun for optimizing painting operations according to claim 7, wherein: still include an air inlet branch pipe (132) in the body of a gun (10), the one end of air inlet branch pipe (132) is connected outside air supply, and the other end intercommunication air inlet pipeline (13), the intercommunication department of air inlet branch pipe (132) and air inlet pipeline (13) is equipped with air pressure regulating valve (80).

9. A spray gun for optimizing painting operations according to claim 1, further comprising: the spray gun further comprises a distance sensing alarm mechanism (90), the distance sensing alarm mechanism comprises an infrared sensor (91) and a processor (92), an alarm circuit module (93) and a battery (94) which are arranged in the gun body (10), the infrared sensor (91) is fixed above the gun body (10) and is close to the wind cap (20), the infrared sensor (91) is connected with the processor (92), the processor (92) is connected with the alarm circuit module (93), and the battery (94) supplies power for the infrared sensor (91), the processor (92) and the alarm circuit module (93).