CN215541917U - Spraying gun structure capable of discharging more smoothly and preventing backflow - Google Patents
Spraying gun structure capable of discharging more smoothly and preventing backflow Download PDFInfo
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- CN215541917U CN215541917U CN202120957791.2U CN202120957791U CN215541917U CN 215541917 U CN215541917 U CN 215541917U CN 202120957791 U CN202120957791 U CN 202120957791U CN 215541917 U CN215541917 U CN 215541917U
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Abstract
The utility model discloses a spraying gun structure which can discharge more smoothly and prevent backflow, and the spraying gun structure comprises a gun body, wherein the gun body is provided with a coating passage and an air inlet main passage, the handle part of the gun body is also provided with an air inlet auxiliary passage, the air inlet auxiliary passage is communicated with the air inlet main passage, the air inlet auxiliary passage and the air inlet main passage can be respectively connected and installed with an air inlet switch control device, and the central axes of the air inlet auxiliary passage and the air inlet main passage form an included angle alpha smaller than 45 degrees; the coating passageway includes nozzle ejection of compact portion, material pipe connecting portion, and the nozzle ejection of compact portion is provided with outer transition portion, interior transition portion respectively with material pipe connecting portion's junction between them. According to the utility model, the phenomena that after the use is finished, the sealing performance of the connection between each component is damaged and the reverse flow occurs due to the pressure coating in the coating channel and the material pipe connected with the coating channel are avoided, the influence on the next spraying use is avoided, and meanwhile, the feeding and discharging of the coating channel are smoother, so that the service life of the spraying gun is prolonged and the spraying effect is improved.
Description
Technical Field
The utility model belongs to the technical field of spray guns, and particularly relates to a spray gun structure which can discharge materials more smoothly and prevent backflow.
Background
The spraying gun is a spraying tool, such as external wall paint, real stone paint and anticorrosive spraying in life, has the advantages of high coating efficiency, better aesthetic property, uniform coating and the like, and is widely used.
The spraying gun is respectively provided with an air inlet channel and a coating channel in a gun body, a trigger valve rod assembly for controlling work is arranged in the spraying gun, the air inlet channel is connected with a high-pressure pump through an air pipe, the coating channel is connected with a charging basket through a material pipe, and a coating pressure feeding device connected with the high-pressure pump is also arranged in the charging basket;
when the paint sprayer is used, the trigger valve rod assembly on the handle is pressed down to open the air inlet channel and the paint channel so as to control and start the high-pressure pump to work pneumatically, the high-pressure pump can convey compressed air to the air inlet channel, meanwhile, the compressed air can also supply pressure to the paint pressure conveying device in the charging basket, paint in the charging basket is conveyed to the paint channel through the material pipe under the action of the pressure conveying device, and the compressed air in the air inlet channel can be quickly released as power to spray the paint in the paint channel; the high-pressure pump stops working simultaneously after the trigger valve rod assembly is loosened to close the air inlet channel, although the high-pressure pump stops working at the moment and the coating pressure feeding device also stops supplying pressure to the coating synchronously, the closed pressure coating still exists in the material pipe between the coating channel and the charging bucket, the existing pressure coating can damage the sealing property of connection between each component on one hand, and on the other hand, the pressure coating can generate a reverse flow phenomenon at the discharge port of the coating channel to influence the next spraying use.
The existing coating channel is divided into two parts, one part is used for installing a nozzle as a material spraying port, the other part is used for connecting a material pipe with a material inlet, but the two parts are directly designed in a crossed mode and have larger angle crossing angles, so that the phenomenon of blockage caused by unsmooth material passing and long-time use is easily caused.
Disclosure of Invention
The present invention is directed to solve the above problems in the prior art, and provides a spray gun structure that can discharge more smoothly and prevent backflow.
In order to achieve the purpose, the technical scheme of the utility model is as follows: a spraying gun structure with smoother discharging and backflow prevention comprises a gun body, wherein the gun body comprises a handle part and a gun body part, the handle part of the gun body is provided with a main air inlet channel, and the gun body part of the gun body is provided with a coating channel, an air inlet control mounting hole, a material spraying control mounting hole and an air outlet channel; the gun body is characterized in that the handle part of the gun body is also provided with an air inlet auxiliary channel, the air inlet auxiliary channel is communicated with the air inlet main channel, the air inlet auxiliary channel and the air inlet main channel can be respectively connected and installed with an air inlet switch control device, and central axes of the air inlet auxiliary channel and the air inlet main channel form an included angle alpha which is smaller than 45 degrees; the coating passageway includes nozzle ejection of compact portion, material union coupling portion, and nozzle ejection of compact portion and material union coupling portion junction between them is provided with outer transition portion, interior transition portion respectively, and it has the bending arc angle to connect and communicate with each other to form through outer transition portion, interior transition portion between nozzle ejection of compact portion and the material union coupling portion.
When the air inlet device is used, the air pipe for the air inlet main channel is connected with an external high-pressure air source through the high-pressure pump, the air pipe for the air inlet auxiliary channel is directly connected with the external high-pressure air source, and the air inlet main channel and the air inlet auxiliary channel are independently controlled through the air inlet switch control devices corresponding to the air inlet main channel and the air inlet auxiliary channel; when the paint spraying device is used, the air inlet main channel and the air inlet auxiliary channel can be opened to allow air to enter simultaneously, the air inlet and the feeding can be performed simultaneously, the paint is sprayed out of the paint channel, and an outer transition part and an inner transition part are arranged between the nozzle discharging part and the material pipe connecting part of the paint channel, so that the path of the paint entering the material pipe and flowing out of the paint channel is smoother; after the paint bucket is used, the air inlet main channel is closed, the connected high-pressure pump is controlled to stop working, and the paint pressure feeding device in the paint bucket pumps the paint into the paint channel through the material pipe by the pressure provided by the high-pressure pump, so that the high-pressure pump stops working, and the connected paint pressure feeding device also stops working; although feeding is not carried out any more, pressure coating exists in the coating channel and the material pipe connected with the coating channel, the air inlet auxiliary channel can be opened, and then the coating channel and the material pipe connected with the coating channel are discharged by controlling the entering air.
In foretell a discharge is more smooth and can prevent palirrhea spray gun structure, interior transition portion, outer transition portion both have respectively and begin to turn to portion, middle turning portion, tail outflow portion, and the pay-off route S is formed in the coating passageway between interior transition portion and the outer transition portion.
At foretell ejection of compact more smooth and can prevent palirrhea spray gun structure, interior transition portion and outer transition portion form between the two transition pay-off region, and the transition pay-off region is regional including transition initiating zone, transition turn to district, transition outflow district, spout material control mounting hole and include preceding installation department, back installation department, preceding installation department correspondence turns to the district in the transition.
In the spraying gun structure which can discharge more smoothly and prevent backflow, the included angle alpha is set to be 30 degrees.
By adopting the technical scheme, the utility model has the following beneficial effects:
compared with the prior art, the utility model is additionally provided with the air inlet auxiliary channel, after the use is finished, the air inlet main channel can be closed and connected with the high-pressure pump to correspondingly control and stop working, the pressure coating is stored in the coating channel and the material pipe connected with the coating channel through the air inlet of the air inlet auxiliary channel to be discharged, so that the damage to the connection tightness among all parts caused by the pressure coating stored in the coating channel and the material pipe connected with the coating channel after the use is finished is avoided, and the phenomenon that the pressure coating flows backwards at the discharge port of the coating channel and influences the next spraying use is avoided; the service life of the spray gun is prolonged, and the spray effect is improved.
Compared with the prior art, the outer transition part and the inner transition part are arranged between the nozzle discharging part and the material pipe connecting part of the coating channel, so that the coating entering through the material pipe forms a bent feeding and discharging path in the coating channel, the coating is more smoothly sprayed, the spraying effect is improved, the pressure of the coating passing through the coating channel is small, and the coating channel is not easy to block.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
The utility model is further explained with reference to the drawings.
Referring to fig. 1 and 2, the utility model provides a spray gun structure capable of discharging more smoothly and preventing backflow, which includes a gun body 1, the gun body 1 includes a handle portion 2 and a gun body portion 3, the handle portion 2 of the gun body 1 is provided with a main air inlet channel 4, the gun body portion 3 of the gun body 1 is provided with a coating channel 5, an air inlet control mounting hole 6, a spray material control mounting hole 7 and an air outlet channel 8, the air inlet control mounting hole 6 and the spray material control mounting hole 7 are both used for mounting a trigger valve rod assembly, and the structure is a conventional technology, so that the mounting description is not repeated in the drawings; the handle portion 2 of the gun body 1 is further provided with an air intake auxiliary passage 9, the air intake auxiliary passage 9 is communicated with the air intake main passage 4, the air intake auxiliary passage 9 and the air intake main passage 4 can be respectively connected and installed with an air intake switch control device (not shown in the figure), an included angle α is formed between central axes of the air intake auxiliary passage 9 and the air intake main passage 4, the included angle α is smaller than 45 degrees, and the included angle α is set to be 30 degrees preferentially for the purpose of convenient external connection and use at the air intake auxiliary passage 9;
the coating channel 5 comprises a nozzle discharging part 10 and a material pipe connecting part 11, an outer transition part 12 and an inner transition part 13 are respectively arranged at the connecting part of the nozzle discharging part 10 and the material pipe connecting part 11, and the nozzle discharging part 10 and the material pipe connecting part 11 are communicated with each other through a bent arc angle formed by the outer transition part 12 and the inner transition part 13; the coating material channel 5 is preferably produced by a die-casting process.
When the device is used, the air inlet main channel 4 is connected with an external high-pressure air source through a high-pressure pump by an air pipe, the air inlet auxiliary channel 9 is directly connected with the external high-pressure air source by the air pipe, and the air inlet switch control device can be selectively and respectively installed at the ports of the air inlet main channel 4 and the air inlet auxiliary channel 9 through air inlet connectors or on the connected air pipe (the air inlet switch control device is an existing device, and the installation and connection are also well-known technical means in the field, so the schematic description is not made herein); when the paint spraying device is used, the air inlet main channel 4 and the air inlet auxiliary channel 9 can be simultaneously opened for air inlet, and only the air inlet main channel 4 can be selected to be used for air inlet during spraying through the switch control device, at the moment, the controlled air inlet can control the high-pressure pump to start and work for spraying, after entering through the material pipe connecting part 11 of the paint channel 5, the paint is sent to the nozzle discharging part 10 to be sprayed through a bent path formed by the outer transition part 12 and the inner transition part 13, and the feeding and discharging of the whole paint channel 5 are smoother;
after the use is finished, the air inlet main channel 4 is closed, the connected high-pressure pump is controlled to stop working, and because the paint pressure feeding device in the paint bucket pumps the paint into the paint channel 5 through the material pipe by the pressure provided by the high-pressure pump, the high-pressure pump stops working, and the connected paint pressure feeding device also stops working; at this time, the air inlet auxiliary channel 9 is kept to be filled with air and then is controlled to enter the air outlet channel 8, so that the pressure coating in the coating channel 5 and the material pipe connected with the coating channel can be discharged.
Further, the inner transition portion 13 and the outer transition portion 12 both have a starting turning portion 14, a middle turning portion 15 and a tail flow portion 16, respectively, and a feeding path S is formed between the inner transition portion 13 and the outer transition portion 12 in the paint channel 5; the coating from the material pipe connecting part 11 to the nozzle discharging part 10 in the coating channel 5 is fed and discharged along the feeding path S, so that the coating can be smoothly fed and discharged.
Further, a transitional feeding area is formed between the inner transition portion 13 and the outer transition portion 12, the transitional feeding area includes a transitional starting area 17, a transitional turning area 18 and a transitional outflow area 19, the spraying control mounting hole 7 includes a front mounting portion 20 and a rear mounting portion 21, and the front mounting portion 20 corresponds to the transitional turning area 18; because the sealing end for controlling the spraying of the coating and the valve rod partially connected with the sealing end are arranged in the coating channel 5, the valve rod just corresponds to the formed transition turning area 18, the feeding fluency of the transition feeding area cannot be influenced, the pressure of feeding is small, and the valve rod is not easy to wear.
The structure of the spray gun which can discharge more smoothly and prevent backflow is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present invention, and the description of the above embodiment is only used to help understanding the technical solution disclosed by the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. A spraying gun structure with smoother discharging and backflow prevention comprises a gun body, wherein the gun body comprises a handle part and a gun body part, the handle part of the gun body is provided with a main air inlet channel, and the gun body part of the gun body is provided with a coating channel, an air inlet control mounting hole, a material spraying control mounting hole and an air outlet channel; the method is characterized in that: the gun body is characterized in that the handle part of the gun body is also provided with an air inlet auxiliary channel, the air inlet auxiliary channel is communicated with the air inlet main channel, the air inlet auxiliary channel and the air inlet main channel can be respectively connected and installed with an air inlet switch control device, and central axes of the air inlet auxiliary channel and the air inlet main channel form an included angle alpha which is smaller than 45 degrees; the coating passageway includes nozzle ejection of compact portion, material union coupling portion, and nozzle ejection of compact portion and material union coupling portion junction between them is provided with outer transition portion, interior transition portion respectively, and it has the bending arc angle to connect and communicate with each other to form through outer transition portion, interior transition portion between nozzle ejection of compact portion and the material union coupling portion.
2. The structure of claim 1, wherein the spray gun structure is capable of discharging more smoothly and preventing backflow, and comprises: the inner transition part and the outer transition part are respectively provided with a starting turning part, a middle turning part and a tail flowing part, and a feeding path S is formed in the coating channel between the inner transition part and the outer transition part.
3. A spray gun structure for discharging more smoothly and preventing backflow according to claim 1 or 2, characterized in that: interior transition portion and outer transition portion form between the two transition pay-off region, and the transition pay-off region turns to district, transition outflow district including transition initiating zone, transition, spout material control mounting hole and include preceding installation department, back installation department, and preceding installation department is corresponding to turning to the district in the transition.
4. The structure of claim 1, wherein the spray gun structure is capable of discharging more smoothly and preventing backflow, and comprises: the included angle alpha is set to be 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120957791.2U CN215541917U (en) | 2021-05-07 | 2021-05-07 | Spraying gun structure capable of discharging more smoothly and preventing backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120957791.2U CN215541917U (en) | 2021-05-07 | 2021-05-07 | Spraying gun structure capable of discharging more smoothly and preventing backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215541917U true CN215541917U (en) | 2022-01-18 |
Family
ID=79858020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120957791.2U Active CN215541917U (en) | 2021-05-07 | 2021-05-07 | Spraying gun structure capable of discharging more smoothly and preventing backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215541917U (en) |
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2021
- 2021-05-07 CN CN202120957791.2U patent/CN215541917U/en active Active
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