CN211801762U - High-pressure airless spray gun - Google Patents
High-pressure airless spray gun Download PDFInfo
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- CN211801762U CN211801762U CN201922427289.6U CN201922427289U CN211801762U CN 211801762 U CN211801762 U CN 211801762U CN 201922427289 U CN201922427289 U CN 201922427289U CN 211801762 U CN211801762 U CN 211801762U
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- valve core
- gun body
- linkage rod
- nozzle
- airless spray
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Abstract
A high-pressure airless spray gun comprises a gun body, a nozzle assembly, a valve seat, a valve core assembly, a trigger mechanism and an elastic element. The gun body is provided with a central hole, and the nozzle assembly is connected with the front end of the gun body; the valve seat, the valve core assembly and the elastic element are respectively arranged in the central hole of the gun body. The valve seat is positioned between the nozzle assembly and the front end of the valve core assembly and is provided with a discharge hole; the trigger mechanism is arranged on the gun body and used for controlling the valve core assembly to move so as to open or close the discharge hole. The elastic element is abutted against the valve core assembly and used for providing an elastic force biased to the valve seat for the valve core assembly, wherein the trigger mechanism comprises a trigger and a linkage rod; the gun body is provided with a linkage rod hole, the linkage rod is rotatably arranged in the linkage rod hole, two ends of the linkage rod are respectively connected with the trigger, and the rod body of the linkage rod is provided with a shifting block part used for shifting the valve core assembly to move backwards. The utility model discloses simple structure easily installs low in manufacturing cost.
Description
Technical Field
The utility model relates to a spray gun of spraying coating.
Background
The high-pressure airless spray gun does not need to atomize the coating by air, but sprays the coating increased to high pressure from a tiny spray hole to form atomized coating. The existing high-pressure airless spray gun mainly comprises a gun body, a nozzle assembly, a valve seat, a valve core assembly, a spring, a trigger mechanism and the like. The nozzle assembly is connected with the front end of the gun body, and the valve seat, the valve core assembly and the spring are respectively arranged in a central hole of the gun body; the valve seat is positioned between the nozzle assembly and the front end of the valve core assembly and is provided with a discharge hole. The trigger mechanism is arranged on the gun body and used for controlling the valve core assembly to move in the gun body so as to open or close the discharge hole of the valve seat. The spring is abutted against the valve core assembly and can provide an elastic force biased towards the valve seat for the valve core assembly.
The existing valve core assembly mainly comprises a valve needle, the number of parts of a trigger mechanism is large, the nozzle assembly and a gun body are sealed by a sealing ring, the overall structure of a spray gun is complex, inconvenience is brought to installation, and the manufacturing cost is increased.
Disclosure of Invention
The utility model aims to solve the technical problem that a high-pressure airless spray gun of simple structure, easily installation, low in manufacturing cost is provided.
In order to solve the technical problem, an embodiment of the utility model provides a high-pressure airless spray gun, which comprises a gun body, a nozzle assembly, a valve seat, a valve core assembly, a trigger mechanism and an elastic element; the gun body is provided with a central hole, and the nozzle assembly is connected with the front end of the gun body; the valve seat, the valve core assembly and the elastic element are respectively arranged in a central hole of the gun body; the valve seat is positioned between the nozzle assembly and the front end of the valve core assembly and is provided with a discharge hole; the trigger mechanism is arranged on the gun body and used for controlling the valve core assembly to move so as to open or close the discharge hole; the elastic element is abutted against the valve core assembly and used for providing an elastic force biased to the valve seat for the valve core assembly, wherein the trigger mechanism comprises a trigger and a linkage rod; the gun body is provided with a linkage rod hole, the linkage rod is rotatably arranged in the linkage rod hole, two ends of the linkage rod are respectively connected with the trigger, and the rod body of the linkage rod is provided with a shifting block part used for shifting the valve core assembly to move backwards.
The utility model discloses at least, have following advantage:
1. the trigger mechanism of the embodiment of the utility model mainly comprises two parts, namely a trigger and a linkage rod, and the linkage rod is provided with a shifting block part for shifting a valve core component to move forwards, so that the control of a spray gun switch can be realized, and the trigger mechanism has the advantages of few parts, simple structure and convenient installation and operation;
2. the valve core assembly of the embodiment adopts a spherical valve core structure, and compared with the existing valve needle valve core, the valve core assembly has a simpler structure and is easier to manufacture.
Drawings
Fig. 1 shows an exploded view of a high pressure airless spray gun according to an embodiment of the present invention.
Fig. 2 shows a schematic front view of a high-pressure airless spray gun according to an embodiment of the present invention.
Fig. 3 shows a schematic section a-a of fig. 2.
Fig. 4 shows a side view schematic of fig. 2.
Fig. 5 shows a schematic B-B cross-sectional view of fig. 4.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Please refer to fig. 1 to 5. According to the utility model discloses a high-pressure airless spray gun of embodiment, including rifle body 1, nozzle assembly 2, disk seat 3, case subassembly 4, trigger mechanism, elastic element 6 and filter element group spare 7.
The gun body 1 is provided with a central hole 10, and the nozzle component 2 is connected with the front end of the gun body 1. The nozzle assembly 2 includes a nozzle holder 21, a U-seal 22 and a nozzle holder nut 23.
The nozzle holder 21 is provided with a central through hole 210. The forward end of U-shaped seal 22 extends into central bore 210 of the nozzle carrier and is in positive engagement with central bore 210 to prevent rearward movement of the U-shaped seal. In this embodiment, stopping protrusions 221 are disposed on two sides of the U-shaped sealing member 22, a stopping step 211 is disposed on the hole wall of the central through hole 210, and the stopping protrusions 221 abut against the stopping step 211. The U-shaped seal 22 has a U-shaped groove 220 at its front end, the U-shaped groove 220 being used for mounting a nozzle (not shown) for spraying. The rear end of the U-shaped sealing element 22 is provided with an outer conical surface 22a, and the rear end surface of the U-shaped sealing element 22 is provided with a discharge channel 223 penetrating through the U-shaped groove 220. The outer peripheral surface of the rear end of the nozzle holder 21 is provided with an annular groove 212, the inner wall of the nozzle holder nut 23 is provided with an annular flange 232 projecting radially inwardly, and the annular flange 232 projects into the annular groove 212, so that the nozzle holder nut 23 is rotatably mounted outside the rear end of the nozzle holder 21. The muzzle of the gun body 1 is provided with a conical surface groove 1a matched with the outer conical surface 22a of the U-shaped sealing element 22, the outer peripheral surface of the front end of the gun body 1 is provided with an external thread matched with the internal thread of the nozzle seat nut 23, the nozzle seat nut 23 is in threaded connection with the front end of the gun body, and the outer conical surface 22a of the U-shaped sealing element 22 is attached to the inner conical surface of the conical surface groove 1a to form sealing. Compared with the traditional sealing mode adopting a sealing ring, the sealing mode has the advantages of simpler structure and more convenient and faster installation.
The valve seat 3, the valve core assembly 4 and the elastic element 6 are respectively arranged in a central hole 10 of the gun body 1. The valve seat 3 is positioned between the nozzle assembly 2 and the front end of the valve core assembly 4 and is provided with a discharge hole 30. The valve seat 3 is provided with a seal ring installation groove 31 for installing a seal O-ring 91. The central hole 10 is provided with a limiting part 101 matched with the valve seat 3, and the limiting part 101 abuts against the front end face of the valve seat 3 to limit the valve seat 3 axially so as to prevent the valve seat 3 from moving forwards. The resilient member 6 abuts the rear end of the valve core assembly for providing a resilient force to the valve core assembly 4 biased towards the valve seat 3. At least a portion of the filter element assembly 7 is located within the central bore 10 of the gun body and the filter element assembly 7 is removably attached to the gun body 1, the filter element assembly 7 being used to filter paint entering the gun body to remove impurities. The surface of the filter element assembly 7 is provided with meshes (not shown in the figure), and a sealing ring 93 is sleeved outside the filter element assembly 7.
In this embodiment, the elastic element 6 is a spring, the front end of the spring abuts against the valve core assembly 4, and the rear end of the spring 4 abuts against the front end of the valve core assembly 4. The filter element assembly 7 is spirally connected with the rear end of the central hole 10 of the gun body 1, and the rear end of the filter element assembly 7 extends out of the gun body.
A trigger mechanism is mounted on the gun body 1 for controlling movement of the valve core assembly 4 to open or close the discharge opening 30. The trigger mechanism includes a trigger 51 and a linkage 52. The gun body 1 is provided with a linkage rod hole 12, the axis of the linkage rod hole 52 is orthogonal to the central axis of the gun body 1, the linkage rod 52 is rotatably arranged in the linkage rod hole 12, two ends of the linkage rod 52 are respectively connected with a trigger 51, and the rod body of the linkage rod 52 is provided with a shifting block part 521 for shifting the valve core assembly 4 to move backwards.
Further, the utility model discloses high-pressure airless spray gun of embodiment includes a pair of fixed lid 53, and this a pair of fixed lid 53 covers the both ends in gangbar hole 12 respectively to be connected with the U-shaped groove of trigger 51 inner wall. In other embodiments, the fixed cover 53 may be connected to the gun body 1. The shaft of the linkage rod 52 is sleeved with a pair of sealing rings 92, and two ends of the linkage rod 51 respectively penetrate through the pair of fixed covers 53. The two ends of the linkage rod 52 are respectively provided with a rotation preventing part 522, the trigger 51 is provided with a pair of rotation preventing holes 511 matched with the rotation preventing parts 522 at the two ends of the linkage rod, and the rotation preventing parts 522 at the two ends of the linkage rod are respectively embedded and fixed in the pair of rotation preventing holes 511. In this embodiment, the trigger 51 is a plastic part, and the two ends of the linkage rod 52 are clamped by using the elasticity of the plastic material. In this embodiment, the valve core assembly 4 includes a valve rod 41 and a valve core 42, the valve core 42 is fixed on the front end of the valve rod 41, and the shaft of the valve rod 42 is provided with a projection 411 matched with the shifting block 521. In the example in the figure, the projection 411 is ring-shaped. The valve seat 3 is provided with a sealing surface 32 which is in sealing fit with the spherical valve core 42, and the spherical valve core is attached to the sealing surface 32 to form sealing.
Alternatively, the sealing surface 32 of the valve seat may be a circular arc surface or a tapered surface, and the circular arc surface may be a spherical surface or an aspherical surface. The valve seat 3 is a tungsten steel valve seat, the spherical valve core 42 is a tungsten steel ball, and the tungsten steel ball is welded and connected with the front end face of the valve rod 41.
Furthermore, the gun body 1, the nozzle holder 21 and the U-shaped sealing member 22 are all plastic parts, so that the manufacturing cost is reduced.
The side wall of the gun body 1 is provided with a feeding joint 15; the top of feed connection 15 is equipped with external conical surface 151, and the feed connection's top terminal surface sets up the feedstock channel 150 who link up the centre bore 10 of the rifle body, and the outer peripheral face of feed connection 15 still is equipped with the external screw thread. The utility model discloses high-pressure airless spray gun includes feed pipe 8, and feed pipe 8 includes body 81 and feed pipe nut 82, and feed pipe nut 82 rotationally installs outside the exit end of body 81, and it realizes that pivoted structure is similar with the nozzle holder nut. The feed tube nut 82 is internally threaded to mate with the external threads of the feed connection. The outlet of the tube 81 is provided with a conical groove 811 which fits the outer conical surface of the feed connection 15. Feed tube nut 82 is threadably engaged with feed fitting 15 and the outer tapered surface 151 of feed fitting 15 is engaged with the inner tapered surface of tapered groove 811 to form a seal. Compared with the traditional sealing mode adopting the sealing ring, the sealing mode has the advantages of simpler structure and more convenient and faster installation.
Further, the pipe body 81 includes a high-pressure pipe joint 81a, a high-pressure pipe clamping cap 81b, and a high-pressure pipe 81c, which are connected in this order.
During spraying operation, the booster pump increases the coating to high pressure and carries the rifle body 1 through feed pipe 8, as long as trigger 2 is pulled, opens the discharge opening 30 of disk seat 3, and the coating in the feed pipe 8 can loop through feedstock channel 150, filter element group spare 7, the discharge opening 30 of disk seat 3, the discharging channel 223 of U type sealing member 22 of feed connection 15 and carry and install in the nozzle of U type groove 220 to spout in the orifice of nozzle, thereby realize spraying operation.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A high-pressure airless spray gun comprises a gun body, a nozzle assembly, a valve seat, a valve core assembly, a trigger mechanism and an elastic element; the gun body is provided with a central hole, and the nozzle assembly is connected with the front end of the gun body; the valve seat, the valve core assembly and the elastic element are respectively arranged in a central hole of the gun body; the valve seat is positioned between the nozzle assembly and the front end of the valve core assembly and is provided with a discharge hole; the trigger mechanism is arranged on the gun body and used for controlling the valve core assembly to move so as to open or close the discharge hole; the elastic element is abutted against the valve core assembly and is used for providing an elastic force deviating from the valve seat for the valve core assembly, and the trigger mechanism is characterized by comprising a trigger and a linkage rod;
the gun body is provided with a linkage rod hole, the linkage rod is rotatably arranged in the linkage rod hole, two ends of the linkage rod are respectively connected with the trigger, and a rod body of the linkage rod is provided with a shifting block part used for shifting the valve core assembly to move backwards.
2. The high-pressure airless spray gun according to claim 1, wherein the valve core assembly comprises a valve rod and a valve core, the valve core is fixed at the front end of the valve rod, and a protrusion part matched with the shifting block is arranged on a rod body of the valve rod.
3. The high-pressure airless spray gun according to claim 2, wherein the valve core is a spherical valve core, the valve seat is provided with a sealing surface which is in sealing fit with the spherical valve core, and the spherical valve core is attached to the sealing surface.
4. The high pressure airless spray gun of claim 1, wherein the high pressure airless spray gun comprises a filter cartridge assembly, at least a portion of the filter cartridge assembly is positioned within the central bore of the gun body, and the filter cartridge assembly is removably coupled to the gun body.
5. The high pressure airless spray gun of claim 4, wherein the resilient element is a spring, a front end of the spring abuts the cartridge assembly, and a rear end of the spring abuts a front end of the cartridge assembly.
6. The high-pressure airless spray gun according to claim 1, wherein the side wall of the gun body is provided with a feed connection; the top end of the feeding joint is provided with an external conical surface, the end surface of the top end of the feeding joint is provided with a feeding channel penetrating through the central hole of the gun body, and the outer peripheral surface of the feeding joint is also provided with external threads;
the high-pressure airless spray gun comprises a feed pipe, the feed pipe comprises a pipe body and a feed pipe nut, the feed pipe nut is rotatably arranged outside the outlet end of the pipe body, and the feed pipe nut is provided with an internal thread matched with the external thread of the feed joint; the outlet of the pipe body is provided with a conical surface groove matched with the outer conical surface of the feeding joint;
the feeding pipe screw cap is spirally connected with the feeding joint, and the outer conical surface of the feeding joint is attached to the inner conical surface of the conical surface groove to form sealing.
7. The high-pressure airless spray gun according to claim 1, comprising a pair of fixing covers respectively covering both ends of the linkage rod hole;
the two ends of the linkage rod respectively penetrate through the pair of fixed covers, the two ends of the linkage rod are respectively provided with an anti-rotation part, the trigger is provided with a pair of anti-rotation holes matched with the anti-rotation parts at the two ends of the linkage rod, and the anti-rotation parts at the two ends of the linkage rod are respectively embedded and fixed in the pair of anti-rotation holes.
8. The high pressure airless spray gun of claim 1, wherein the nozzle assembly comprises a nozzle holder, a U-seal, and a nozzle holder nut;
the nozzle seat is provided with a central through hole; the front end of the U-shaped sealing element extends into the central through hole of the nozzle seat and is in limit fit with the central through hole so as to prevent the U-shaped sealing element from moving backwards, a U-shaped groove is formed in the front end of the U-shaped sealing element, an outer conical surface is arranged at the rear end of the U-shaped sealing element, and a discharge channel penetrating through the U-shaped groove is formed in the rear end surface of the U-shaped sealing element; the nozzle seat nut is rotatably arranged outside the rear end of the nozzle seat;
the gun mouth of the gun body is provided with a conical surface groove matched with the outer conical surface of the U-shaped sealing element, and the outer peripheral surface of the front end of the gun body is provided with an external thread matched with the internal thread of the nozzle seat nut; the nozzle seat nut is in threaded connection with the front end of the gun body, and the outer conical surface of the U-shaped sealing element is attached to the inner conical surface of the conical surface groove to form sealing.
9. The high-pressure airless spray gun according to claim 8, wherein the nozzle holder has an annular groove on the outer circumferential surface at the rear end thereof, and the nozzle holder nut has an annular flange on the inner wall thereof, the annular flange projecting radially inward into the annular groove.
10. The high pressure airless spray gun of claim 8, wherein the gun body, the nozzle block, the U-shaped seal, and the trigger are plastic parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427289.6U CN211801762U (en) | 2019-12-29 | 2019-12-29 | High-pressure airless spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427289.6U CN211801762U (en) | 2019-12-29 | 2019-12-29 | High-pressure airless spray gun |
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| Publication Number | Publication Date |
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| CN211801762U true CN211801762U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922427289.6U Active CN211801762U (en) | 2019-12-29 | 2019-12-29 | High-pressure airless spray gun |
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| CN (1) | CN211801762U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023018445A1 (en) * | 2021-08-12 | 2023-02-16 | Wagner Spray Tech Corporation | Improved fluid applicator |
| US11666932B2 (en) | 2020-03-27 | 2023-06-06 | Wagner Spray Tech Corporation | Fluid applicator |
-
2019
- 2019-12-29 CN CN201922427289.6U patent/CN211801762U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11666932B2 (en) | 2020-03-27 | 2023-06-06 | Wagner Spray Tech Corporation | Fluid applicator |
| WO2023018445A1 (en) * | 2021-08-12 | 2023-02-16 | Wagner Spray Tech Corporation | Improved fluid applicator |
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