CN219723296U - Gun body of high-pressure airless spray gun and high-pressure airless spray gun thereof - Google Patents
Gun body of high-pressure airless spray gun and high-pressure airless spray gun thereof Download PDFInfo
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- CN219723296U CN219723296U CN202320555436.1U CN202320555436U CN219723296U CN 219723296 U CN219723296 U CN 219723296U CN 202320555436 U CN202320555436 U CN 202320555436U CN 219723296 U CN219723296 U CN 219723296U
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- hole
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- central
- pressure airless
- valve core
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- 239000007921 spray Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 22
- 239000008358 core component Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000000306 component Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 description 10
- 239000003973 paint Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
A gun body of a high-pressure airless spray gun and the high-pressure airless spray gun thereof. The gun body comprises a gun body made of plastic materials and a lining made of metal materials; the gun body comprises a first cylinder body and a front end wall; the first cylinder body is provided with a first central through hole extending along the axial direction; the periphery of the front end wall is connected with the front end hole wall of the first central through hole, and the front end wall is provided with a second central through hole which extends along the axial direction and is communicated with the first central through hole; the bushing comprises a second barrel part and a feed pipe joint; the second cylinder part is arranged in the first central through hole, the outer side surface of the second cylinder part is connected with the hole wall of the first central through hole, the front end surface of the second cylinder part is connected with the rear end surface of the front end wall, and the second cylinder part is provided with a third central through hole extending along the axial direction; one end of the feeding pipe joint is connected with the outer side face of the front end of the second barrel part, the feeding pipe joint penetrates through the side face of the first barrel part, and the other end of the feeding pipe joint is used for being connected with a feeding pipe. The utility model has strong bearing capacity, light weight and low manufacturing cost.
Description
Technical Field
The present utility model relates to a spray gun for spraying paint.
Background
The high-pressure airless spray gun does not need to atomize the paint by air, but sprays the paint increased to high pressure from the tiny spray holes to form atomized paint. The existing high-pressure airless spray gun mainly comprises a gun shell, a gun body, a nozzle assembly, a valve seat, a valve core assembly, a reset spring, a trigger and the like. The gun body is fixed on the gun shell, and a feed pipe connector connected with the feed pipe is arranged on the side face of the gun body so as to receive the pumped paint. The nozzle assembly is connected with the front end of the gun body. The valve seat and the valve core component are arranged in the gun body, and the valve seat is positioned between the front ends of the nozzle component and the valve core component and is provided with a discharge hole. The trigger is arranged on the gun shell and used for controlling the valve core component to move in the gun body so as to open or close a discharge hole of the valve seat. The return spring can provide an elastic force for biasing the valve core assembly to the valve seat.
The existing gun body is made of metal or plastic, the metal gun body has strong pressure bearing capacity, but has higher manufacturing cost and heavier weight, and the plastic gun body has lower manufacturing cost and lighter weight than the metal gun body, but has small pressure bearing capacity.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a gun body of a high-pressure airless spray gun with strong bearing capacity, light weight and low manufacturing cost and the high-pressure airless spray gun thereof.
In one aspect, the embodiment of the utility model provides a gun body of a high-pressure airless spray gun, which comprises a gun body made of plastic materials and a lining made of metal materials; the gun body comprises a first cylinder body and a front end wall; the first cylinder body is provided with a first central through hole extending along the axial direction; the periphery of the front end wall is connected with the front end hole wall of the first central through hole, and the front end wall is provided with a second central through hole which extends along the axial direction and is communicated with the first central through hole; the bushing comprises a second barrel part and a feeding pipe joint; the second cylinder part is arranged in the first central through hole, the outer side surface of the second cylinder part is connected with the hole wall of the first central through hole, the front end surface of the second cylinder part is connected with the rear end surface of the front end wall, and the second cylinder part is provided with a third central through hole extending along the axial direction; one end of the feeding pipe joint is connected with the outer side surface of the second barrel part and is communicated with the third central through hole, the feeding pipe joint penetrates through the side surface of the first barrel part, and the other end of the feeding pipe joint is used for being connected with a feeding pipe.
On the other hand, the embodiment of the utility model also provides a high-pressure airless spray gun, which comprises a gun shell, a valve seat, a valve core assembly, a sealing assembly, a supporting seat, an elastic reset element and a trigger; the gun shell is provided with an inner cavity, and the valve seat is provided with a discharge hole; the support seat is axially movably arranged in the inner cavity of the gun shell, and the valve core assembly is connected with the support seat and can move along with the support seat; the elastic reset element is arranged in the inner cavity of the gun shell and is abutted against the rear end of the supporting seat; the trigger is arranged on the gun shell, and when the trigger is pulled, the supporting seat can be driven to overcome the elasticity of the elastic reset element to move backwards, so that the valve core component opens the discharge hole, and when the trigger is released, the supporting seat resets under the action of the elastic reset element, so that the valve core component closes the discharge hole; the high-pressure airless spray gun is characterized by comprising the gun body, wherein the rear end of the gun body is fixed on the gun shell, and the front end of the gun body extends out of the gun shell; the valve seat is arranged in the third central through hole of the second cylinder body, the outer peripheral surface of the valve seat is abutted against the hole wall of the third central through hole, the front end surface of the valve seat is abutted against the rear end surface of the front end wall, and the discharge hole of the valve seat is opposite to the second central through hole of the front end wall; the front end of the valve core assembly extends into the third central through hole, and the rear end of the valve core assembly is connected with the supporting seat; the sealing component is connected with the valve core component and is used for forming sealing between the hole wall of the third central through hole and the valve core component.
The utility model has at least the following advantages:
1. the gun body of the embodiment of the utility model consists of a gun body made of plastic material and a lining made of metal, and has better bearing capacity compared with the gun made of plastic material, and the weight is lighter than that of the gun body made of pure metal;
2. the metal bushing and the plastic gun body of the embodiment are easy to manufacture by adopting a one-step molding mode, and compared with a pure metal gun body manufactured by adopting machining, the metal bushing and the plastic gun body are easier to manufacture and lower in manufacturing cost.
Drawings
FIG. 1 illustrates a partial schematic front view of a high pressure airless gun (nozzle assembly not shown) according to one embodiment of the utility model.
Fig. 2 shows a schematic partial cross-sectional view of a high pressure airless gun according to an embodiment of the utility model.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
Please refer to fig. 1 and 2. A high pressure airless gun according to an embodiment of the present utility model includes a gun housing 1, a gun body 2, a valve seat 3, a valve core assembly, a seal assembly, a support seat 6, an elastic return element 7, and a trigger 8.
The gun housing 1 has an inner cavity 10. The rear end of the gun body 2 is fixed on the gun shell 1, and the front end of the gun body 2 extends out of the gun shell. Preferably, the gun body 2 is detachably connected with the gun case 1. In a specific embodiment, the gun body 2 is detachably connected with the gun housing 1 by screws.
The gun body 2 includes a gun body 2a made of plastic material and a bush 2b made of metal material. The gun body 2a includes a first cylindrical body 21 and a front end wall 22. The outer circumferential surface of the front end of the first cylinder 21 is provided with threads 211 for connection to a nozzle assembly not shown in the drawings. The first cylindrical body 21 has a first center through hole 210 extending in the axial direction; the peripheral edge of the front end wall 22 is connected to the front end hole wall of the first central through hole 210, and the front end wall 22 has a second central through hole 220 extending in the axial direction and communicating with the first central through hole 210. The liner 2b includes a second barrel portion 23 and a feed tube fitting 24. The second cylindrical body 23 is disposed in the first central through hole 210, an outer side surface of the second cylindrical body 23 is connected to a wall of the first central through hole 210, a front end surface of the second cylindrical body 23 is connected to a rear end surface of the front end wall 22, and the second cylindrical body 23 has a third central through hole 230 extending in an axial direction. One end of the feed pipe joint 24 is connected with the outer side surface of the second cylinder part and is communicated with the third central through hole 230, the feed pipe joint 24 penetrates through the side surface of the first cylinder part 21, and the other end of the feed pipe joint 24 is used for connecting the feed pipe 9.
In the present embodiment, the bush 2b is injection molded integrally with the gun body 2 a. The lining is made of stainless steel. The central axes of the first, second and third central through holes 210, 220 and 230 are located on the same straight line.
The valve seat 3 is disposed in the third central through hole 230 of the second cylindrical body 23, the outer peripheral surface of the valve seat 3 abuts against the wall of the third central through hole 230, the front end surface of the valve seat 3 abuts against the rear end surface of the front end wall 22, the valve seat 3 has a discharge hole 30, and the discharge hole 30 is opposite to the second central through hole 220 of the front end wall 22.
The front end of the valve core assembly extends into the third central through hole 230, and the rear end of the valve core assembly is connected with the supporting seat 6. The support seat 6 is axially movably arranged in the inner cavity 10 of the gun housing 1, and the valve core assembly can move together with the support seat 6.
In this embodiment, the valve cartridge assembly includes a valve stem 41, a valve cartridge 42, and a double-ended screw 43. A valve element 42 is fixed to the front end of the valve rod 41, and the valve element 42 is a spherical valve element and is in sealing fit with the sealing surface of the valve seat 3. Both ends of the double-headed screw 43 are respectively screw-connected with the rear end of the valve rod 41 and the support seat 6,
the seal assembly is mounted outside the double-ended screw 43 for forming a seal between the bore wall of the third central bore 230 and the valve core assembly.
In this embodiment, the seal assembly includes a stop collar 51, an elastomeric sleeve seal 52, a seal mount 53, and a stud 54. The double-ended screw 43 passes through the stop collar 51, the elastic sleeve seal 52, the seal holder 53 and the stud 54 in sequence. The elastic sleeve seal 52 has a truncated cone shape with an outer diameter gradually increasing from the end to the middle. One end of the limiting sleeve 51 extends into the third central through hole 230, a sealing ring 55 is arranged between one end of the limiting sleeve 51 and the hole wall of the third central through hole 230, an axial limiting part 512 abutting against the rear end of the bushing 2b is arranged on the side surface of the other end of the limiting sleeve 51, and a first conical groove 511 matched with the round table at one end of the elastic sleeve sealing element 52 is arranged on the end surface of the other end of the limiting sleeve 51; one end of the seal member support 53 is provided with a second conical groove 532 which is matched with the round table at the other end of the elastic sleeve seal member 52, the other end of the seal member support 53 is abutted against the front end of the stud 54, and the outer peripheral surface of the stud 54 is in spiral connection with the hole wall of the first central through hole 210. The elastic sleeve sealing member 52 has both ends respectively fitted into the first tapered groove 511 and the second tapered groove 532 and is pressed by the first tapered groove 511 and the second tapered groove 532, thereby being capable of more tightly fitting the outer peripheral surface of the double-headed screw 43 and obtaining a better sealing effect.
The elastic reset element 7 is arranged in the inner cavity 10 of the gun shell 1 and is abutted against the rear end of the supporting seat 6. In this embodiment, the elastic restoring element 7 is a spring, the front end of which abuts against the support seat 6, and the rear end of which abuts against the rear end of the gun housing 1.
The trigger 8 is installed on the gun shell 1, and when the trigger 8 is pulled, the supporting seat 6 can be driven to overcome the elasticity of the elastic reset element 7 to move backwards, so that the valve core assembly opens the discharge hole 30, and when the trigger is released, the supporting seat 6 resets under the action of the elastic reset element 7, so that the valve core assembly closes the discharge hole 30. In a specific embodiment, trigger 8 is coupled to support 6 by a pin 81.
The gun body of the embodiment of the utility model consists of a gun body made of plastic material and a lining made of metal, and has better bearing capacity compared with the gun made of plastic material and lighter weight than the gun body made of pure metal. In a specific application, the gun body with the same size is made of plastic, the maximum working pressure is 11Mpa, and the gun body adopting the embodiment of the utility model has the maximum working pressure of 25Mpa, so that the bearing capacity of the gun body is obviously improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. The gun body of the high-pressure airless spray gun is characterized by comprising a gun body made of plastic materials and a lining made of metal materials;
the gun body comprises a first cylinder body and a front end wall; the first cylinder body is provided with a first central through hole extending along the axial direction; the periphery of the front end wall is connected with the front end hole wall of the first central through hole, and the front end wall is provided with a second central through hole which extends along the axial direction and is communicated with the first central through hole;
the bushing comprises a second barrel part and a feed pipe joint; the second cylinder part is arranged in the first central through hole, the outer side surface of the second cylinder part is connected with the hole wall of the first central through hole, the front end surface of the second cylinder part is connected with the rear end surface of the front end wall, and the second cylinder part is provided with a third central through hole extending along the axial direction; one end of the feeding pipe joint is connected with the outer side face of the second barrel part and is communicated with the third central through hole, the feeding pipe joint penetrates through the side face of the first barrel part, and the other end of the feeding pipe joint is used for being connected with a feeding pipe.
2. The gun body of the high-pressure airless gun according to claim 1, wherein central axes of the first center through hole, the second center through hole and the third center through hole are located on the same straight line.
3. The gun body of the high pressure airless gun of claim 1, wherein the bushing is integrally injection molded with the gun body.
4. The gun body of the high-pressure airless spray gun according to claim 1, wherein an outer peripheral surface of a front end of the first cylinder portion is provided with threads.
5. The body of the high pressure airless spray gun of claim 1, wherein the bushing is made of stainless steel.
6. A high-pressure airless spray gun comprises a gun shell, a valve seat, a valve core assembly, a sealing assembly, a supporting seat, an elastic reset element and a trigger; the gun shell is provided with an inner cavity, and the valve seat is provided with a discharge hole; the support seat is axially movably arranged in the inner cavity of the gun shell, and the valve core assembly is connected with the support seat and can move along with the support seat; the elastic reset element is arranged in the inner cavity of the gun shell and is abutted against the rear end of the supporting seat; the trigger is arranged on the gun shell, and when the trigger is pulled, the trigger can drive the supporting seat to overcome the elasticity of the elastic reset element to move backwards, so that the valve core component opens the discharge hole, and when the trigger is released, the supporting seat resets under the action of the elastic reset element, so that the valve core component closes the discharge hole; the high-pressure airless spray gun is characterized by comprising a gun body as claimed in any one of claims 1 to 5, wherein the rear end of the gun body is fixed on the gun shell, and the front end of the gun body extends out of the gun shell;
the valve seat is arranged in a third central through hole of the second cylinder body, the peripheral surface of the valve seat is abutted against the hole wall of the third central through hole, the front end surface of the valve seat is abutted against the rear end surface of the front end wall, and the discharge hole of the valve seat is opposite to the second central through hole of the front end wall;
the front end of the valve core assembly extends into the third central through hole, and the rear end of the valve core assembly is connected with the supporting seat;
the sealing component is connected with the valve core component and is used for forming sealing between the hole wall of the third central through hole and the valve core component.
7. The high pressure airless spray gun of claim 6, wherein the valve core assembly comprises a valve rod, a valve core and a double-ended screw rod, the valve core is fixed at the front end of the valve rod, two ends of the double-ended screw rod are respectively in spiral connection with the rear end of the valve rod and the supporting seat, and the sealing assembly is arranged outside the double-ended screw rod.
8. The high pressure airless gun of claim 7, wherein the seal assembly comprises a stop collar, an elastomeric sleeve seal, a seal holder, and a stud;
the double-headed screw rod sequentially passes through the limit sleeve, the elastic sleeve sealing element, the sealing element bracket and the stud;
the two ends of the elastic sleeve sealing piece are truncated cones with the outer diameter gradually increased from the end part to the middle part; one end of the limiting sleeve extends into the third central through hole, a sealing ring is arranged between one end of the limiting sleeve and the hole wall of the third central through hole, an axial limiting part abutting against the rear end of the bushing is arranged on the side face of the other end of the limiting sleeve, and a first conical groove matched with the round table body at one end of the elastic sleeve sealing element is arranged on the end face of the other end of the limiting sleeve; one end of the sealing element support is provided with a second conical groove matched with the round table at the other end of the elastic sleeve sealing element, the other end of the sealing element support is abutted against the front end of the stud, and the outer peripheral surface of the stud is in spiral connection with the hole wall of the first central through hole;
the two ends of the elastic sleeve sealing piece are respectively embedded into the first conical groove and the second conical groove and are extruded by the first conical groove and the second conical groove.
9. The high pressure airless gun of claim 6, wherein the resilient return element is a spring, a front end of the spring abutting the support base, a rear end of the spring abutting a rear end of the gun housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320555436.1U CN219723296U (en) | 2023-03-20 | 2023-03-20 | Gun body of high-pressure airless spray gun and high-pressure airless spray gun thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320555436.1U CN219723296U (en) | 2023-03-20 | 2023-03-20 | Gun body of high-pressure airless spray gun and high-pressure airless spray gun thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219723296U true CN219723296U (en) | 2023-09-22 |
Family
ID=88060802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320555436.1U Active CN219723296U (en) | 2023-03-20 | 2023-03-20 | Gun body of high-pressure airless spray gun and high-pressure airless spray gun thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219723296U (en) |
-
2023
- 2023-03-20 CN CN202320555436.1U patent/CN219723296U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |