CN210585472U - Spray range quick adjustment device of spray gun - Google Patents
Spray range quick adjustment device of spray gun Download PDFInfo
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- CN210585472U CN210585472U CN201921273649.5U CN201921273649U CN210585472U CN 210585472 U CN210585472 U CN 210585472U CN 201921273649 U CN201921273649 U CN 201921273649U CN 210585472 U CN210585472 U CN 210585472U
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Abstract
The utility model discloses a spray width quick adjusting device of a spray gun, which comprises a gun body, wherein the gun body is provided with an adjusting hole and a main air flow channel, the air inlet channel, the main air flow channel and the auxiliary air flow channel are communicated with the adjusting hole, a first air outlet is formed at the communication position of the main air flow channel and the adjusting hole, a second air outlet is formed at the communication position of the auxiliary air flow channel and the adjusting hole, an air inlet is formed at the communication position of the air inlet channel and the adjusting hole, a rotatable adjusting valve rod is installed in the adjusting hole, an air guide groove is formed in the adjusting valve rod or the adjusting hole between the air inlet and the first air outlet and communicated with the first air inlet and the first air outlet, a control hole is further formed in the outer side face of the adjusting valve rod, an air guide flow channel communicated with the control hole and the air guide groove is formed in the adjusting valve rod, and when the adjusting valve rod rotates, the control hole. The spray gun with the spray amplitude adjusting device has the advantages of simple structure, convenience in adjustment and processing and good sealing performance.
Description
Technical Field
The utility model relates to a spray gun, in particular to quick adjusting device of the spray range of spray gun.
Background
Spray guns are tools used for spraying paint. The rear end of the spray gun is connected with compressed gas, and a spray can for storing spray paint is arranged on the spray gun. When the spray gun works, the spray paint is taken out from the head of the spray gun through compressed gas and atomized, so that the effect of uniform spraying is achieved.
Patent No. 201310352976.0 of my company discloses a lance provided with an amplitude stepless adjustment device and an amplitude stepless adjustment device therefor. The spray gun can quickly adjust the spraying amplitude of the spray gun through the amplitude stepless adjusting device, so that the sprayed spray paint shape is changed from a circle to an ellipse.
However, this structure has the following problems:
1. as shown in fig. 10 of the patent, the overall structure of the adjusting rotary rod is complex, the main airflow groove and the auxiliary airflow groove are both fan-shaped annular grooves, and need to be processed by a milling cutter, so that the processing speed is slow, the processing is difficult, and the production cost is high.
2. Because the range hole is the blind hole, processing difficulty, blind hole bottom surface edge roughness and machining precision are relatively poor, in order to avoid adjusting the clamping stagnation that causes of valve rod right side edge and blind hole bottom surface edge contact, adjusting valve rod right-hand member tip is the cambered surface. This results in the contact length between regulating valve rod right-hand member tip and the range hole to diminish, and the location guiding action worsens, leads to regulating valve rod right-hand member tip to take place the swing easily, influences the sealing performance between regulating valve rod and the range hole.
3. In order to ensure the coaxiality between the adjusting valve rod and the amplitude hole, the end part of the right end of the adjusting valve rod is provided with a steel ball groove and a steel ball, so that the integral structure of the adjusting valve rod and the spray gun is more complex, and the machining and the assembling are difficult.
4. The adjusting valve rod is not provided with a circumferential limiting device, so that the rotating range of the adjusting valve rod is not limited and the adjusting is inconvenient.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a quick adjusting device of the width of cloth that spouts of spray gun, simple structure adjusts, processing is convenient, and sealing performance is good.
The above technical purpose of the present invention can be achieved by the following technical solutions: a spray range quick adjusting device of a spray gun comprises a gun body, wherein an adjusting hole, a main air flow channel, an auxiliary air flow channel and an air inlet channel are arranged on the gun body, the air inlet channel, the main air flow channel and the auxiliary air flow channel are communicated with the adjusting hole, a first air outlet is formed at the communication position of the main air flow channel and the adjusting hole, a second air outlet is formed at the communication position of the auxiliary air flow channel and the adjusting hole, an air inlet is formed at the communication position of the air inlet channel and the adjusting hole, the projections of the first air outlet and the second air outlet are arranged in a staggered manner in the axis direction of the adjusting hole, a rotatable adjusting valve rod is arranged in the adjusting hole, an air guide groove is arranged on an adjusting valve rod or the adjusting hole between the air inlet and the first air outlet, the air guide groove is communicated with the first air inlet and the first air outlet, a control hole is also arranged on the outer side surface of, when the adjusting valve rod rotates, the control hole and the second air outlet can gradually change from a non-overlapped state to a completely overlapped state.
Through the technical scheme, the outer side face of the adjusting valve rod is provided with the control hole, the control hole is communicated with the air guide groove through the air guide flow channel arranged in the adjusting valve rod, the coincidence quantity of the control hole and the second air outlet can be gradually adjusted by rotating the adjusting valve rod, so that the air flow entering the second air outlet is controlled, and the spraying amplitude of the spray gun is changed.
Drilling relatively offers fan annular groove on adjusting valve rod, and processing is more convenient, and it is littleer to destroy adjusting valve rod lateral surface, can not cause great influence to adjusting valve rod and the laminating of regulation hole, and difficult emergence swing makes and still has better sealing performance between adjusting valve rod and the regulation hole. Because the outer side surface of the adjusting valve rod is still a complete annular surface, the coaxiality between the adjusting valve rod and the control hole can be better ensured, a steel ball is not required to be arranged for positioning, the structure is simple, and the assembly is convenient.
Preferably, the control opening is arranged radially in the adjusting valve rod.
Through above-mentioned technical scheme, the control hole hangs down and radially sets up along adjusting valve rod, and it is more convenient for the slope sets up processing, and the destruction to adjusting valve rod surface is littleer simultaneously.
Preferably, the air guide flow passage comprises an axial flow passage arranged along the axis of the regulating valve rod and a radial flow passage perpendicular to the axis of the regulating valve rod.
Through the technical scheme, the air guide channel is arranged in such a way that the air guide channel is more convenient to process.
Preferably, the air guide groove is arranged on the adjusting valve rod.
Through above-mentioned technical scheme, the air guide groove sets up on adjusting valve rod for setting up in adjusting the hole, and it is more convenient to process, and manufacturing cost is lower.
Preferably, the two ends of the adjusting valve rod are provided with sealing grooves, and sealing rings are installed in the sealing grooves.
Through above-mentioned technical scheme, the setting of sealing washer can avoid compressed gas to spill from the clearance between adjusting valve rod and the control hole, causes compressed gas's waste.
Preferably, the adjusting hole is a through hole.
Through above-mentioned technical scheme, the regulation hole is the through-hole, adds the drill bit or milling cutter and runs through the rifle body completely of man-hour for the machining precision and the surface accuracy in control hole can obtain better assurance, are difficult for producing the processing defect at similar blind hole bottom surface edge.
Preferably, one end of the adjusting valve rod is provided with a flanging, one end of the adjusting hole is provided with a limiting groove, and the flanging is located in the limiting groove.
Through the technical scheme, the axial position of the adjusting valve rod can be limited by the arrangement of the flanging, and the fixing of the adjusting valve rod is facilitated.
Preferably, the flanging is provided with a notch, the limiting groove is provided with a convex tooth, and the convex tooth is clamped into the notch to limit the rotation angle of the adjusting valve rod.
Through the technical scheme, the notch and the convex teeth can limit the rotation angle of the adjusting valve rod, so that the adjusting is more convenient, accurate and efficient.
Preferably, the knob is installed to the governing valve rod other end, and the knob tip is contradicted with the rifle body.
Preferably, the setting up of knob is convenient for rotate adjusting valve rod on the one hand, and on the other hand can fix adjusting valve rod, avoids adjusting valve rod to deviate from spacing groove one side.
Compared with the prior art, the beneficial effects of the utility model are that: redesign through the structure to regulating valve rod and regulation hole for regulating valve rod overall structure is simpler, and it is more convenient to process, and the axiality between regulating valve rod and the regulation hole can obtain better assurance, reduces the swing of regulating valve rod in the regulation hole, obtains better sealed effect. The spray gun spraying amplitude is adjusted by rotating the adjusting valve rod in the circumferential direction, the second air outlet can be controlled to be fully opened to fully closed only by rotating a small angle, and the adjustment is more convenient.
Drawings
FIG. 1 is an exploded view of an embodiment;
FIG. 2 is a front view of the gun body;
FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a cross-sectional view of the adjustment hole after installation;
FIG. 5 is a perspective view of the adjustment valve stem;
FIG. 6 is a schematic cross-sectional view of the regulator valve stem;
FIG. 7 is an enlarged view of the position of the limiting groove.
Reference numerals: 1. a gun body; 2. an adjustment hole; 3. a main gas flow path; 6. a secondary airflow channel; 7. an air intake passage; 8. a first air outlet; 9. a second air outlet; 10. an air inlet; 11. adjusting the valve rod; 12. a gas guide groove; 13. a control hole; 14. an air guide flow channel; 15. an axial flow passage; 16. a radial flow passage; 17. a sealing groove; 18. a seal ring; 19. flanging; 20. a convex tooth; 21. a knob; 22. a limiting groove; 23. a notch; 24. and (4) screws.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
As shown in fig. 1 to 3, a spray gun with an amplitude adjusting device comprises a gun body 1, wherein an adjusting hole 2 is formed in the gun body 1, and a main airflow channel 3, an auxiliary airflow channel 6 and an air inlet channel 7 are communicated with the adjusting hole 2. The first air outlet 8 is formed at the communication position of the main air flow channel 3 and the adjusting hole 2, the second air outlet 9 is formed at the connection position of the auxiliary air flow channel 6 and the adjusting hole 2, and the air inlet 10 is formed at the communication position of the air inlet channel 7 and the adjusting hole 2. The projections of the first air outlet 8 and the second air outlet 9 in the axial direction of the adjusting hole 2 do not have overlapped sections, and the projections of the two air outlets in the axial direction of the adjusting hole 2 are arranged in a staggered mode. Meanwhile, the projections of the air inlet 10 and the air outlet 9 in the axial direction of the adjusting hole 2 do not have overlapped sections, and the projections of the air inlet 10 and the air outlet 9 in the axial direction of the adjusting hole 2 are arranged in a staggered mode. The adjusting hole 2 is internally provided with a rotatable adjusting valve rod 11, and the cross section of each position of the adjusting valve rod 11 is circular. An air guide groove 12 is formed in the adjusting valve rod 11 between the air inlet 10 and the first air outlet 8, and the air guide groove 12 can be annular, arc-shaped or fan-shaped. The air guide groove 12 is communicated with the air inlet 10 and the air outlet I8, so that the air outlet I8 can be always communicated with the air inlet 10. In addition, the air guide groove 12 can also be arranged on the adjusting hole 2, and correspondingly can also be annular or arc-shaped or fan-shaped.
As shown in fig. 5 and 6, a control hole 13 is further formed in the outer side surface of the front end of the adjusting valve rod 11, and the control hole 13 is radially arranged along the adjusting valve rod 11, so that the control hole 13 can be conveniently machined. An air guide channel 14 which is communicated with the control hole 13 and the air guide groove 12 is also arranged in the adjusting valve rod 11. The air guide flow passage 14 includes an axial flow passage 15 provided along the axis of the adjustment valve stem 11 and a radial flow passage 16 perpendicular to the axis of the adjustment valve stem 11. The number of the radial flow passages 16 is multiple and is evenly distributed along the circumferential direction of the side surface of the adjusting valve rod 11. The axial flow passage 15 is arranged in the center of the adjusting valve rod 11, one end of the axial flow passage is communicated with the control hole 13, and the other end of the axial flow passage is communicated with the radial flow passage 16. In addition, the air guide flow passage 14 may be an inclined hole which obliquely communicates the inner ends of the air guide groove 12 and the control hole 13. Although the inclined hole is difficult to process, only one hole needs to be drilled, and the processing procedures can be reduced.
When the adjusting valve rod 11 rotates, the overlapping amount of the control hole 13 and the second air outlet 9 is gradually changed, so that the compressed air entering the auxiliary air flow channel 6 is gradually increased or reduced, and the effect of adjusting the spray amplitude of the spray gun is achieved.
The other side of the adjusting valve rod 11 provided with the flanging 19 is also provided with a knob 21, and the knob 21 is fixed on one end face of the adjusting valve rod 11 through a screw 24. The end of the knob 21 facing the gun body 1 abuts against the gun body 1, thereby fixing the regulating valve rod 11 in the regulating hole 2. When the knob 21 is turned, the regulating valve rod 11 is also turned together, so that the spray amplitude of the spray gun is regulated.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (9)
1. A quick adjusting device for the spray amplitude of a spray gun comprises a gun body (1), wherein an adjusting hole (2), a main air flow channel (3), an auxiliary air flow channel (6) and an air inlet channel (7) are arranged on the gun body (1), the air inlet channel (7), the main air flow channel (3) and the auxiliary air flow channel (6) are communicated with the adjusting hole (2), a first air outlet (8) is formed at the communication position of the main air flow channel (3) and the adjusting hole (2), a second air outlet (9) is formed at the communication position of the auxiliary air flow channel (6) and the adjusting hole (2), an air inlet (10) is formed at the communication position of the air inlet channel (7) and the adjusting hole (2), the projections of the first air outlet (8) and the second air outlet (9) in the axis direction of the adjusting hole (2) are arranged in a staggered manner, the projections of the air inlet (10) and the second air outlet (9) in the axis direction of the adjusting hole (2) are, the method is characterized in that: the gas guide groove (12) is formed in the adjusting valve rod (11) or the adjusting hole (2) between the gas inlet (10) and the gas outlet I (8), the gas guide groove (12) is communicated with the gas inlet (10) and the gas outlet I (8) all the time, the control hole (13) is further formed in the outer side face of the adjusting valve rod (11), a gas guide flow channel (14) communicated with the control hole (13) and the gas guide groove (12) is formed in the adjusting valve rod (11), and when the adjusting valve rod (11) rotates, the control hole (13) and the gas outlet II (9) can be gradually changed into a completely overlapped state from the non-overlapped state.
2. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 1, wherein: the control hole (13) is arranged along the radial direction of the adjusting valve rod (11).
3. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 1, wherein: the air guide flow passage (14) comprises an axial flow passage (15) arranged along the axial direction of the adjusting valve rod (11) and a radial flow passage (16) vertical to the axial direction of the adjusting valve rod (11).
4. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 1, wherein: the air guide groove (12) is arranged on the adjusting valve rod (11).
5. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 1, wherein: two ends of the adjusting valve rod (11) are provided with sealing grooves (17), and sealing rings (18) are installed in the sealing grooves (17).
6. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 5, wherein: the adjusting hole (2) is a through hole.
7. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 6, wherein: a flanging (19) is arranged at one end of the adjusting valve rod (11), a limiting groove (22) is arranged at one end of the adjusting hole (2), and the flanging (19) is positioned in the limiting groove (22).
8. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 7, wherein: a notch (23) is formed in the flanging (19), a convex tooth (20) is arranged on the limiting groove (22), and the convex tooth (20) is clamped into the notch (23) to limit the rotating angle of the adjusting valve rod (11).
9. The device for rapidly adjusting the spray width of a spray gun as claimed in claim 7, wherein: the other end of the adjusting valve rod (11) is provided with a knob (21), and the end part of the knob (21) is abutted against the gun body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921273649.5U CN210585472U (en) | 2019-08-07 | 2019-08-07 | Spray range quick adjustment device of spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921273649.5U CN210585472U (en) | 2019-08-07 | 2019-08-07 | Spray range quick adjustment device of spray gun |
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| Publication Number | Publication Date |
|---|---|
| CN210585472U true CN210585472U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921273649.5U Active CN210585472U (en) | 2019-08-07 | 2019-08-07 | Spray range quick adjustment device of spray gun |
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| CN (1) | CN210585472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042710A1 (en) * | 2020-07-07 | 2022-03-03 | 宁波江辉电器科技有限公司 | Dual-flow-path structure and spray gun |
-
2019
- 2019-08-07 CN CN201921273649.5U patent/CN210585472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042710A1 (en) * | 2020-07-07 | 2022-03-03 | 宁波江辉电器科技有限公司 | Dual-flow-path structure and spray gun |
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