CN215235125U - Sealing structure for valve block and base, spray head and spray gun - Google Patents
Sealing structure for valve block and base, spray head and spray gun Download PDFInfo
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- CN215235125U CN215235125U CN202121810683.9U CN202121810683U CN215235125U CN 215235125 U CN215235125 U CN 215235125U CN 202121810683 U CN202121810683 U CN 202121810683U CN 215235125 U CN215235125 U CN 215235125U
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Abstract
The utility model relates to a seal structure, shower nozzle and spray gun for valve block and base belongs to application equipment technical field. The structure comprises a base, a valve block and a piston, wherein the valve block and the piston are arranged on the base, through holes for accommodating the piston are formed in the base and the valve block, a sealing sleeve is arranged in the through hole of the valve block and sleeved on the piston, and the edge of the through hole on the surface, which is attached to the spray gun base, of the valve block is expanded outwards to form an annular groove; the through hole of the base is set to be a stepped hole, the bottom of the sealing sleeve is clamped on the stepped layer at the top of the stepped hole, and sealing rings are arranged on the rest stepped layer and in the annular groove. The sealing structure can be suitable for a spray gun or a spray head, and the coating in the base runner can be prevented from entering the inner cavity of the valve block through the sealing mechanism.
Description
Technical Field
The utility model belongs to the technical field of the application equipment, specifically a seal structure, shower nozzle and spray gun for valve block and base.
Background
At present, in the traditional single-layer sealing structure spraying operation, the problems of color mixing after color changing, long color changing and cleaning time, blockage of a spray gun opening due to the fact that paint enters an inner cavity of a valve block and is not easy to clean, curing and accumulating of the paint in the cavity and the like are solved, the influence is small in simple single-color spraying, but the spray gun applying the traditional sealing structure can not meet the operation requirement under the increasingly complex and fine spraying requirements of the fields of civil use, military use and the like on decoration, protectiveness, functionality, multi-color changing and the like. For example, the prior art discloses a four-color spray gun device, publication No.: CN207385762U, the device integrates a color changing valve and a spray gun, but after a switch piston is opened due to the structural defect of single-layer sealing, the coating can enter the inner cavity of a valve block under the spraying pressure, and the coating is not easy to clean due to the internal structure and blind holes, so that the color changing time is prolonged; the color mixing of the spraying after color changing affects the spraying effect, and the paint can not be directly sprayed and wasted; and the residual coating in the inner cavity of the valve block is deposited and adhered, and then is solidified to generate solid particles to block a gun mouth, so that the spraying operation is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that exists among the prior art, the utility model provides a seal structure, shower nozzle and spray gun for valve block and base.
The embodiment of the utility model provides a seal structure for valve block and base, including the base, install valve block and piston head on the base, all be equipped with the through-hole that holds the piston on base and the valve block, be equipped with the base runner that is connected with the through-hole in the base, be equipped with the seal cover of cover on the piston head in the through-hole of valve block, the valve block expands outwards with the edge of through-hole on the surface that the base is laminated and forms the ring channel; the through hole of the base is set to be a stepped hole, the bottom of the sealing sleeve is clamped on the stepped layer at the top of the stepped hole, and the sealing rings are arranged in the rest stepped layer and the annular groove.
Further, a base annular groove which is butted with the annular groove is formed in the base.
Further, the valve block is connected with the base through a flange.
Further, the sealing ring is an O-shaped sealing ring.
Furthermore, a gasket is arranged between the step layer at the topmost part of the step hole and the bottom of the sealing sleeve.
Further, the shoulder hole is two-layer step.
Further, a sealing gasket is arranged between the surfaces of the base, which are butted with the valve block.
An embodiment of the utility model provides a shower nozzle, this shower nozzle include above-mentioned arbitrary one a seal structure for valve block and base.
An embodiment of the utility model provides a spray gun, this spray gun include above-mentioned arbitrary one a seal structure for valve block and base.
Furthermore, a vent pipe is connected to the valve block and communicated with the inside of the valve block, and the vent pipe is connected with an air compression device.
Has the advantages that:
the utility model provides a seal structure can realize reciprocating of piston and valve block inner wall separation piston head through set up the seal cover in the valve block, the seal cover nestification is on base step hole top layer step simultaneously, the ring channel through the bottom of remaining step and valve block is equipped with the sealing washer, the piston head has been stopped upwards to open the back, the condition of getting into the valve block inner chamber under spraying pressure from the coating in the base runner gets into the base through-hole, it trades look back colour to have solved polychrome spray gun, trade look time long, the solidification of coating entering valve block inner chamber produces solid particle and leads to blockking up muzzle scheduling problem.
Drawings
Fig. 1 is a schematic view of a sealing structure for a spray gun inner valve block and a base according to an embodiment of the present invention;
fig. 2 is an explosion schematic view of a sealing structure provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sealing sleeve according to an embodiment of the present invention;
fig. 4 is a schematic view of a base structure provided in the embodiment of the present invention.
In the figure: 100. the valve comprises a valve block, 101, a base, 102, a piston head, 103, a sealing sleeve, 1031, a first cylindrical section, 1032, a second cylindrical section, 104, a second sealing ring, 105, a gasket, 106, a first ring, 107, a base oil passage, 108, a base through hole, 1081, a first step, 1082 and a second step.
Detailed Description
As shown in fig. 1-2, the embodiment of the present invention provides a sealing structure for a valve block and a base in a spray gun, the sealing structure mainly includes a valve block 100 and a base 101, wherein the valve block 100 is installed on the base 101, the interior of the valve block 100 is hollow, a piston head 102 is installed between the valve block 100 and the upper portion of the base 101, the piston head 102 is vertically inserted into a through hole between the valve block 100 and the base 101, and can move up and down between the valve block 100 and the base 101, a base oil channel 107 is provided in the base 101, the base oil channel 107 is communicated with a base through hole 108 in the base, and when the piston head 102 moves up, the base oil channel 107 in the base is opened, so that the paint in the base can enter the gun rod through the base oil channel 107 and then be sprayed.
Referring to fig. 4, in the embodiment, the base 101 is provided with a base through hole 108 for mounting the piston head 102, the base through hole 108 is a stepped hole and includes a first step portion 1081 and a second step portion 1082 from top to bottom, a sealing sleeve 103 is arranged in the valve block, the sealing sleeve 103 is sleeved on the piston head 102, the bottom of the sealing sleeve 103 is inserted on the first step portion 1081 of the base through hole, and a first sealing ring is arranged in the second step portion 1082, so that paint entering the base through hole can be prevented from flowing out through the through hole at the upper portion of the base through hole 108 by the first sealing ring 106 in the base through hole 108 and the sealing sleeve 103.
Meanwhile, in the embodiment, the bottom surface of the valve block 100, that is, the surface butted with the base 101, is provided with an annular ring formed by outward expansion of the edge of the central hole of the valve block 100 or the through hole of the valve block, when the valve block 100 is installed on the upper surface of the base 101, the second sealing ring 104 can be placed in the annular groove at the bottom of the valve block 100, and the first sealing ring 106 and the sealing sleeve 103 in the base and the second sealing ring 104 on the valve block form double sealing, so that the condition that the paint enters the inner cavity of the valve block under the spraying pressure after the piston head is opened is avoided, and the problems of color mixing after color changing of a multicolor spray gun, long color changing time, blockage of the gun mouth due to solid particles generated by the solidification of the paint entering the inner cavity of the valve block and the like are solved.
The utility model provides a step hole not only is limited to the two sections in this embodiment in the base, also can be more than two sections, and wherein, the topmost step portion in step hole is used for nested seal cover, and remaining step portion can all place the sealing washer, can increase the leakproofness of base through-hole like this.
Because the piston head continuously moves up and down, in order to ensure the sealing performance and stability of the first sealing ring 106 arranged in the through hole of the base, a gasket 105 is arranged on the bottom surface of the first step portion 1081 of the through hole of the base in the embodiment, the first sealing ring 104 and the sealing sleeve 103 can be separated through the gasket 105, and simultaneously, the center hole of the gasket 105 and the piston head 102 are the same, so that the first sealing ring 106 can be tightly pressed in the second step portion 1082 through the gasket 105, and the stability of the sealing process is ensured.
As shown in fig. 3, the sealing sleeve in this embodiment is a cylindrical body, and includes a first cylindrical section 1031 and a second cylindrical section 1032, wherein the first cylindrical section 1031 is installed in the through hole of the valve block, the second cylindrical section 1032 is installed in the step portion at the top of the through hole of the base, the diameter of the first cylindrical section 1031 is larger than that of the second cylindrical section 1032, and the first sealing ring 106 can be fixed and the coaxiality thereof can be ensured by placing the transition section between the first cylindrical section 1031 and the second cylindrical section 1032 on the upper surface of the base.
Wherein, the height of the first cylinder of the sealing sleeve 103 in this embodiment may be equal to or less than the height of the internal through hole of the valve block, but is preferably less than, because the piston head inside the valve block needs to move up and down according to the air pressure difference inside the valve block, when the height of the first cylinder 1031 of the sealing sleeve is less than the height of the internal through hole, the top of the outer wall surface of the valve block may be directly connected with the air pipe, but if the height of the first cylinder 1031 of the sealing sleeve is equal to the height of the internal through hole of the valve block, the air pipe needs to be installed on the top surface of the valve block.
Further, the bottom surface of the base in this embodiment has a through hole edge that flares outwardly to form an annular groove through which the second seal ring 104 may be seated.
Certainly, a base annular groove corresponding to the annular groove on the bottom surface of the valve block can be formed in the upper surface of the base, and the first sealing ring 106 can be placed between the annular groove on the bottom surface of the valve block and the base annular groove on the base, so that the first sealing ring 106 can be larger, the annular groove on the valve block and the annular groove on the base are in butt joint, the sealing between the first sealing ring 106 and the base is guaranteed through extrusion on the first sealing ring, then the first sealing ring can be tightly attached to the surface of the sealing sleeve, and it is guaranteed that paint cannot enter the inner cavity of the valve block from the space between the sealing sleeve and the inner wall of the valve block.
In addition, the place where the bottom surface of the valve block is butted with the top surface of the base in the embodiment can also be used for placing a sealing gasket for ensuring that the coating does not flow to the outside.
Preferably, the first seal ring 106 and the second seal ring 104 in this embodiment are O-rings, or the first seal ring is an O-ring, and the second seal ring is shaped according to the cross-sectional dimension of the annular groove.
Referring to fig. 1, the valve block in this embodiment is a cylindrical pile, and when the valve block is mounted on the base, the sealing ring needs to be tightly pressed on the base, so that a circle of first bolt holes are formed in the bottom surface of the valve block in this example, and a second bolt hole coaxial with the first bolt hole is formed in the base, so that when the valve block is mounted on the base, the first bolt hole and the second bolt hole are butted and then mounted through screws, and the sealing ring is tightly pressed on the base.
Of course, the bottom surface of the valve block can also be outwards formed into a flange base, and the first bolt hole is formed in the flange base, so that the first bolt hole can be directly fixed on the base through the flange base.
Additionally, the embodiment of the utility model provides a shower nozzle is still provided, this shower nozzle includes the aforesaid the seal structure of valve block and base, can be at this sealing mechanism's base sub-unit connection spray lance, spraying equipment is connected to the bottom of spray lance.
Finally, the embodiment of the utility model provides a spray gun is still provided, this spray gun includes the aforesaid the seal structure of valve block and base, at this sealing mechanism's base sub-unit connection spray lance a breather pipe can be connected at the top of valve block, and this breather pipe is linked together with the inside of valve block, and the other end of this breather pipe is connected air compression equipment simultaneously, can aerify or bleed the valve block through air compression equipment in order to realize the up-and-down motion of piston head.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A seal structure for valve block and base, including the base, install valve block and on the base
The piston is characterized in that a sealing sleeve sleeved on the piston head is arranged in the through hole of the valve block, and the edge of the through hole on the surface, which is jointed with the base, of the valve block expands outwards to form an annular groove; the through hole of the base is set to be a stepped hole, the bottom of the sealing sleeve is clamped on the stepped layer at the top of the stepped hole, and the sealing rings are arranged in the rest stepped layer and the annular groove.
2. A seal arrangement for a valve block and base as claimed in claim 1, wherein a base annular groove is provided in said base for interfacing with the annular groove.
3. A sealing structure for a valve block and a base as claimed in claim 1, wherein the valve block and the base are connected by a flange.
4. A seal arrangement for a valve block and base as claimed in claim 1, wherein said seal is an O-ring seal.
5. A seal arrangement for a valve block and base as claimed in claim 1, wherein a gasket is provided between the uppermost step layer of the step bore and the bottom of the gland.
6. The sealing structure for a valve block and a base as claimed in claim 1, wherein the stepped hole is a two-step hole.
7. A seal arrangement for a valve block and base as claimed in claim 1, wherein a gasket is provided between the abutting surfaces of the base and the valve block.
8. A spray head comprising a sealing structure for a valve block and a base as claimed in any one of claims 1 to 7.
9. A spray gun comprising a seal for a valve block and base as claimed in any one of claims 1 to 7.
10. A spray gun as claimed in claim 9, wherein the valve block is connected to a vent tube which communicates with the interior of the valve block, the vent tube being connected to an air compression device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121810683.9U CN215235125U (en) | 2021-08-04 | 2021-08-04 | Sealing structure for valve block and base, spray head and spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121810683.9U CN215235125U (en) | 2021-08-04 | 2021-08-04 | Sealing structure for valve block and base, spray head and spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215235125U true CN215235125U (en) | 2021-12-21 |
Family
ID=79496778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121810683.9U Active CN215235125U (en) | 2021-08-04 | 2021-08-04 | Sealing structure for valve block and base, spray head and spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215235125U (en) |
-
2021
- 2021-08-04 CN CN202121810683.9U patent/CN215235125U/en active Active
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