Nozzle structure for spray gun

Abstract

The utility model relates to the field of nozzles, in particular to a nozzle structure for a spray gun, which comprises a connecting pipe, a spray pipe and an adapter pipe, the spray pipe and the adapter pipe are arranged on the connecting pipe, two sides of the connecting pipe are respectively provided with a first connecting hole and a second connecting hole which are used for connecting the spray pipe and the adapter pipe, and the connecting pipe is provided with a liquid inlet. The liquid inlet and the first connecting hole are communicated through a connecting through hole to form a liquid flowing channel, a spraying nozzle communicated with the connecting through hole is arranged in the spraying pipe, a connecting part and a switching part are formed at the two ends of the switching pipe respectively, and the switching pipe is detachably used for being connected with an air source pipeline or an air source control gun barrel through the switching part. The connecting part and the adapting part are respectively formed at the two ends of the adapting pipe, so that the adapting pipe can be conveniently connected to an air source pipeline or an air source control gun barrel, the adaptability of the nozzle structure and the connecting flexibility are improved, quick adjustment can be conveniently carried out according to different working requirements, and the working efficiency and the using effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of nozzle, concretely relates to a nozzle structure for spray gun. BACKGROUND

[0002] Spray gun is a tool widely used in industries including but not limited to painting, cleaning, cooling, spraying, etc. Spray gun is a device that uses liquid or compressed air as power. Spray gun is divided into two types: ordinary pressure type and pressurized type. Spray gun includes but is not limited to pressure type spray gun, Kalor type spray gun, automatic recycling type spray gun. Spray gun can be directly used with paint in industry, i.e. simple spray gun, which can be installed in automatic equipment, such as spraying equipment like coating machine. Spray gun also plays an important role in agricultural spraying and cleaning industry. Spray gun sprays liquid through atomizing nozzle.

[0003] The overall structure of spray gun is usually composed of nozzle structure, adjusting mechanism and gun body. Nozzle structure, as one of the core components of spray gun, is composed of air cap and paint nozzle. The function of air cap is to atomize paint and form the required spray pattern, while paint nozzle is responsible for spraying paint. Adjusting mechanism is used to adjust the amount of paint sprayed, compressed air flow and spray pattern to meet different spraying needs. The gun body is equipped with trigger and various sealing elements to ensure the sealing of paint and air and facilitate hand operation to meet different operation needs.

[0004] However, although the nozzle structure in the prior art can meet the existing use requirements, there are still some defects. Specifically, the connection stability of the nozzle structure in the prior art is insufficient, and problems such as loosening or leakage may occur after long-term use, affecting the spraying effect and safety, and the nozzle in the prior art generally needs to be used with a gun barrel, and the existing nozzle structure can usually only connect one type of gas source pipeline or gas source control gun barrel, which is not easy to replace and use conveniently, which limits the flexibility and adaptability of the nozzle in different operation scenarios, thereby limiting the flexibility of the nozzle adapter, which is not conducive to the assembly and use of the nozzle, and affects the practicality. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above defects, providing a nozzle structure for spray gun, to solve the connection stability of the existing nozzle structure in the background art, and the existing nozzle structure is not easy to replace and use conveniently, which affects the flexibility and applicability of the nozzle in different operation environments, and is not conducive to the use of the nozzle.

[0006] The utility model aims at solving the above defects, providing a nozzle structure for spray gun, to solve the connection stability of the existing nozzle structure in the background art, and the existing nozzle structure is not easy to replace and use conveniently, which affects the flexibility and applicability of the nozzle in different operation environments, and is not conducive to the use of the nozzle.

[0007] A nozzle structure for a spray gun, comprising a connecting pipe, a spray pipe arranged on the connecting pipe, and an adapter pipe, first and second connecting holes for connecting the spray pipe and the adapter pipe are respectively formed on two sides of the connecting pipe, the spray pipe and the adapter pipe are respectively threadedly connected with the first and second connecting holes, a liquid inlet is formed on the connecting pipe, the liquid inlet and the first connecting hole are communicated through a connecting through hole to form a liquid flow channel, a spray nozzle is arranged in the spray pipe and communicated with the connecting through hole, one end of the spray nozzle extends along the axial direction of the spray pipe, the adapter pipe has a connecting portion and an adapter portion formed at two ends thereof, the adapter pipe is detachably mounted on the second connecting hole through the connecting portion, and the adapter pipe is detachably used for connecting a gas source pipeline or a gas source control gun rod through the adapter portion.

[0008] Further in the above description, an air inlet channel is arranged in the connecting pipe and communicated with the second connecting hole, one end of the air inlet channel extends to the first connecting hole and is communicated therewith.

[0009] Through the communication of the air inlet channel with the second connecting hole and the first connecting hole, the gas passes through the second connecting hole and the air inlet channel in sequence and is discharged through the first connecting hole, so that the liquid of the spray nozzle can be pressurized to form a spray.

[0010] Further in the above description, the end of the spray nozzle is clamped and connected with a mounting sleeve, the end of the mounting sleeve is threadedly connected with the connecting through hole, so that the liquid of the liquid inlet passes through the mounting sleeve and is discharged through the spray nozzle.

[0011] The mounting sleeve is communicated with the spray nozzle, and a sealing ring is arranged between the mounting sleeve and the spray nozzle, so as to further improve the sealing between the mounting sleeve and the spray nozzle, and the liquid of the liquid inlet passes through the connecting through hole, the mounting sleeve and the spray nozzle in sequence and is discharged from the end of the spray pipe through the communication arrangement of the mounting sleeve and the connecting through hole.

[0012] Further in the above description, the spray nozzle is coaxially sleeved with the spray pipe, so as to form an air flow channel between the spray nozzle and the spray pipe, and the end of the spray pipe away from the connecting pipe is formed with a horn-shaped spray port.

[0013] The end of the spray nozzle away from the first connecting hole extends to the spray port of the spray pipe and is communicated therewith, so that the liquid passes through the spray nozzle and is discharged from the horn-shaped spray port.

[0014] Further in the above description, the end of the spray pipe away from the first connecting hole is connected with an end cover, the end cover is threadedly connected with the spray pipe, an internal spray cavity is formed in the end cover, and a flow-through air flow hole is formed on the spray pipe, so that the gas is discharged from the air flow channel to the spray cavity through the air flow hole, so as to form a spray.

[0015] Further in the above description, the liquid inlet clamping connection has a hollow liquid inlet pipeline in communication with the connecting through hole.

[0016] Further in the above description, the adapter pipe is detachably connected with the air source control gun rod through the adapter part.

[0017] Optionally, the adapter pipe is connected with the air source control gun rod through the threads of the adapter part, the air source control gun rod is provided with a main machine air pump for providing the air source, and the air source control gun rod is provided with a control switch for controlling the air flow of the main machine air pump and the adapter pipe.

[0018] Further in the above description, the adapter pipe is detachably connected with the air source pipeline through the adapter part.

[0019] Optionally, the air source pipeline is connected with a female air pipe joint, and the adapter pipe is a male air pipe joint, so that the adapter pipe is clamped and connected with the female air pipe joint of the air source pipeline through the male air pipe joint, the convenience of installation is improved, and the use adaptability of different working environments is improved.

[0020] The beneficial effects of the utility model are as follows: the spraying pipe and the adapter pipe are connected with the first connecting hole and the second connecting hole through threads, the connection mode is not only firm and reliable, but also convenient to disassemble and replace, the connection through threads ensures that the spraying pipe and the adapter pipe are not easy to loosen or fall off under the impact of high-pressure liquid and air flow, the safety and stability of the nozzle structure are improved, the two ends of the adapter pipe are respectively formed with a connecting part and an adapter part, so that the adapter pipe can be firmly connected to the connecting pipe and conveniently connected to the air source pipeline or the air source control gun rod, the adaptability and connection flexibility of the nozzle structure are improved, the nozzle structure can be quickly adjusted according to different working requirements, the working efficiency is improved, the adapter pipe is detachably installed on the second connecting hole through the connecting part, so that the user can conveniently replace or clean the adapter pipe according to needs, meanwhile, the detachability of the adapter pipe improves the maintenance convenience of the nozzle structure and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the embodiment one;

[0022] Figure 2 It is a sectional view of the embodiment one;

[0023] Figure 3 It is an internal structure schematic view of the embodiment one;

[0024] Figure 4The schematic view is used for connecting the adapter pipe and the air source control gun rod in the embodiment one;

[0025] Figure 5 The schematic view is used for connecting the adapter pipe and the air source control gun rod in the embodiment one;

[0026] Figure 6 The schematic view is used for connecting the adapter pipe and the air source control gun rod in the embodiment one;

[0027] The reference signs in the drawing are as follows:

[0028] 100-connection pipe, 101-first connection hole, 102-second connection hole, 103-liquid inlet, 104-connection through hole, 105-air inlet channel, 200-spraying pipe, 201-spraying opening, 202-air flow hole, 300-adapter pipe, 301-connection part, 302-adapter part;

[0029] 1-spraying nozzle, 2-air source pipeline, 3-air source control gun rod, 4-mounting shaft sleeve, 5-end cover, 6-spraying cavity, 7-liquid inlet pipeline, 8-connection valve, 9-host air pump, 10-control switch, 11-female air pipe joint, 12-male air pipe joint. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail in combination with the drawing and the specific implementation.

[0031] Embodiment one

[0032] In this embodiment, refer to Figures 1-4 The spraying nozzle structure for the spraying gun comprises a connection pipe 100, a spraying pipe 200 and an adapter pipe 300 arranged on the connection pipe 100, first and second connection holes 101 and 102 are respectively arranged on the two sides of the connection pipe 100 for connecting the spraying pipe 200 and the adapter pipe 300, the spraying pipe 200 and the adapter pipe 300 are respectively threadedly connected with the first and second connection holes 101 and 102, a liquid inlet 103 is arranged on the connection pipe 100, the liquid inlet 103 and the first connection hole 101 are communicated through a connection through hole 104 to form a liquid flow channel, a spraying nozzle 1 is arranged in the spraying pipe 200 and communicated with the connection through hole 104, one end of the spraying nozzle 1 extends along the axial direction of the spraying pipe 200, the adapter pipe 300 is formed with a connection part 301 and an adapter part 302 at the two ends, the adapter pipe 300 is detachably mounted on the second connection hole 102 through the connection part 301, and the adapter pipe 300 is detachably connected with the air source pipeline 2 or the air source control gun rod 3 through the adapter part 302.

[0033] The connecting pipe 100 is provided with an air inlet channel 105 in communication with the second connecting hole 102, and one end of the air inlet channel 105 extends to the first connecting hole 101 and is in communication with the first connecting hole 101.

[0034] Through the communication of the air inlet channel 105 with the second connecting hole 102 and the first connecting hole 101, the gas passes through the second connecting hole 102 and the air inlet channel 105 in turn, and is discharged through the first connecting hole 101, so that the liquid of the spray nozzle 1 can be pressurized to form a spray.

[0035] The end of the spray nozzle 1 is clamped and connected with a mounting sleeve 4, and the end of the mounting sleeve 4 is threadedly connected with the connecting through hole 104, so that the liquid of the liquid inlet 103 passes through the mounting sleeve 4 and is discharged through the spray nozzle 1.

[0036] The mounting sleeve 4 is in communication with the spray nozzle 1, and a sealing ring (not shown) is arranged between the mounting sleeve 4 and the spray nozzle 1, further improving the sealing between the mounting sleeve 4 and the spray nozzle 1, and the liquid of the liquid inlet 103 passes through the connecting through hole 104, the mounting sleeve 4 and the spray nozzle 1 in turn through the communication between the mounting sleeve 4 and the connecting through hole 104, and is discharged from the end of the spray pipe 200.

[0037] The spray nozzle 1 is coaxially sleeved with the spray pipe 200, so that an air flow channel is formed between the spray nozzle 1 and the spray pipe 200, and the end of the spray pipe 200 away from the connecting pipe 100 forms a trumpet-shaped spray port 201.

[0038] The end of the spray nozzle 1 away from the first connecting hole 101 extends to the spray port 201 of the spray pipe 200 to communicate, so that the liquid passes through the spray nozzle 1 and is discharged from the trumpet-shaped spray port 201.

[0039] The end of the spray pipe 200 away from the first connecting hole 101 is connected with an end cover 5, the end cover 5 is connected with the spray pipe 200 by screwing, the inside of the end cover 5 forms a spray cavity 6, and the spray pipe 200 is provided with a through air flow hole 202, so that the gas is discharged from the air flow hole 202 to the spray cavity 6 through the air flow channel, and a spray is formed.

[0040] The liquid inlet 103 is clamped and connected with a hollow liquid inlet pipe 7, and the liquid inlet pipe 7 is in communication with the connecting through hole 104. The adapter pipe 300 is threadedly connected with the air source control gun rod 3 through the adapter part 302.

[0041] Optionally, in the embodiment, the adapter 302 is connected with the threaded sleeve of the air source control gun rod 3, the main air pump 9 for providing air source is installed on the air source control gun rod 3 through the connecting valve 8, and the control switch 10 for controlling the air flow of the main air pump 9 is arranged on the air source control gun rod 3 and is in communication with the adapter pipe 300.

[0042] The adapter pipe 300 is detachably buckled with the air source pipeline 2 through the adapter 302.

[0043] The specific use principle in the embodiment is that the spray pipe 200 and the adapter pipe 300 are arranged on both sides of the connecting pipe 100, the spray pipe 200 and the adapter pipe 300 are connected with the first connecting hole 101 and the second connecting hole 102 respectively through threads, so that firm and reliable connection can be achieved, and the spray pipe 200 and the adapter pipe 300 can be conveniently disassembled and replaced, the connection through threads ensures that the spray pipe 200 and the adapter pipe 300 are not easy to loosen or fall off under the impact of high-pressure liquid and air flow, the safety and stability of the nozzle structure are improved, the adapter pipe 300 is formed with the connecting portion 301 and the adapter 302 at both ends, so that the adapter pipe 300 can be firmly connected to the connecting pipe 100 and can be conveniently connected to the air source pipeline 2 or the air source control gun rod 3, specifically, the adapter pipe 300 is connected with the air source control gun rod 3 through the adapter 302 in the embodiment, the adaptability and connection flexibility of the nozzle structure are improved, the nozzle structure can be quickly adjusted according to different working requirements, the working efficiency is improved, and the adapter pipe 300 is detachably installed on the second connecting hole 102 through the connecting portion 301, so that the user can conveniently replace or clean the adapter pipe 300 according to needs;

[0044] When the control switch 10 on the air source control gun rod 3 is opened, the gas generated by the main air pump 9 on the air source control gun rod 3 passes through the second connecting hole 102 and the air inlet channel 105 in turn and is discharged through the first connecting hole 101, so that the liquid of the spray nozzle 1 can be pressurized to form spraying, the connecting pipe 100 is connected with a spray bottle or a paint bottle through the liquid inlet 103, so that the liquid enters the liquid pipeline 7 and passes through the connecting through hole 104, the mounting shaft sleeve 4 and the spray nozzle 1 in turn and is discharged from the spray opening 201 of the spray pipe 200, so that spraying can be used.

[0045] Embodiment two

[0046] In the embodiment, reference is made to Figure 5 The difference between the second embodiment and the first embodiment is that the adapter 302 is used for directly connecting and installing the main air pump 9 for providing air source, and the control switch 10 on the main air pump 9 is used for controlling the opening or closing of the air source flow.

[0047] Embodiment three

[0048] The embodiment is described with reference to the drawings Figure 6 The difference between the third embodiment and the first embodiment is mainly that the female gas pipe joint 11 is connected on the gas source pipeline 2, and the adapter pipe 300 is a male gas pipe joint 12, so that the male gas pipe joint 12 is clamped and connected with the female gas pipe joint 11 of the gas source pipeline 2, the installation convenience is improved, and the use adaptability in different operation environments can be improved.

[0049] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above with a preferred embodiment, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications within the scope of the technical scheme of the utility model without departing from the utility model. Any simple modification, equivalent change and modification of the above embodiment within the scope of the technical scheme of the utility model belong to the scope of the utility model.

Claims

1. A nozzle structure for a spray gun, comprising a connecting pipe, a spray pipe arranged on the connecting pipe, and an adapter pipe, first and second connecting holes for connecting the spray pipe and the adapter pipe are respectively formed on both sides of the connecting pipe, characterized in that: The spraying pipe and the adapter pipe are respectively screwed with the first connecting hole and the second connecting hole, the connecting pipe is provided with a liquid inlet, the liquid inlet and the first connecting hole are communicated through a connecting through hole to form a liquid flow channel, the spraying pipe is provided with a spraying nozzle communicated with the connecting through hole, one end of the spraying nozzle extends along the axial direction of the spraying pipe, the adapter pipe is provided with a connecting part and an adapter part at two ends respectively, the adapter pipe is detachably installed on the second connecting hole through the connecting part, and the adapter pipe is detachably used for connecting the gas source pipeline or the gas source control gun rod through the adapter part.

2. The nozzle structure for a spray gun according to claim 1, characterized in that: The connecting pipe is provided with an air inlet channel communicated with the second connecting hole, and one end of the air inlet channel extends to the first connecting hole and is communicated with the first connecting hole.

3. The nozzle structure for a spray gun according to claim 1, wherein: The end of the spraying nozzle is clamped and connected with a mounting shaft sleeve, and the end of the mounting shaft sleeve is screwed with the connecting through hole, so that the liquid of the liquid inlet passes through the mounting shaft sleeve and is discharged through the spraying nozzle.

4. The nozzle structure for a spray gun according to claim 3, wherein: The spraying nozzle is coaxially sleeved with the spraying pipe to form an air flow channel between the spraying nozzle and the spraying pipe, and the end of the spraying pipe away from the connecting pipe is formed with a spraying port in the shape of a horn.

5. The nozzle structure for a spray gun according to any one of claims 1 to 4, characterized in that: The liquid inlet is clamped and connected with a hollow liquid inlet pipeline, and the liquid inlet pipeline is communicated with the connecting through hole.

6. The nozzle structure for a spray gun according to any one of claims 1 to 4, characterized in that: The adapter pipe is detachably screwed with the gas source control gun rod through the adapter part.

7. The nozzle structure for a spray gun according to any one of claims 1 to 4, characterized in that: The adapter pipe is detachably buckled with the gas source pipeline through the adapter part.

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