CN216046012U

CN216046012U - Sealing gasket for spray gun

Info

Publication number: CN216046012U
Application number: CN202122469719.8U
Authority: CN
Inventors: 周青云; 周青山
Original assignee: Shanghai Caneen Spraying Systems Co ltd
Current assignee: Shanghai Caneen Spraying Systems Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-03-15
Anticipated expiration: 2031-10-13

Abstract

The application relates to a sealing gasket for a spray gun, and relates to the field of spray guns. It is including piling up two graphite gaskets that set up between mounting flange and flange, be equipped with first limbers and first air vent on the graphite gasket, two be provided with the gusset plate between the graphite gasket, be equipped with on the gusset plate with the second venthole that first limbers aligns and with the second venthole that first limbers aligns. Through add the gusset plate between two graphite gaskets, the gusset plate can provide the room of buffering for the pressure that the graphite gasket received to improve sealed intensity of filling up. This application has the effect of avoiding sealed pad to damage because of excessively extrudeing as far as possible.

Description

Sealing gasket for spray gun

Technical Field

The application relates to the field of spray guns, in particular to a sealing gasket for a spray gun.

Background

The external mixing type spray gun is a spray gun for atomizing liquid by high-pressure gas.

In the related technology, the external mixing type spray gun comprises a mounting flange, a connecting flange and a sealing gasket, wherein the sealing gasket is positioned between the mounting flange and the connecting flange, the mounting flange, the connecting flange and the sealing gasket are all provided with water through holes and air through holes, the air through holes are uniformly distributed along the circumferential direction of the water through holes, the mounting flange is connected with a water through pipe and a vent pipe, and the connecting flange is connected with a spray head. When the external mixing type spray gun is used, normal-temperature high-pressure water flow is introduced into the water through pipe, and the water flow flows into the spray head through the water through hole; high-temperature and high-pressure gas is introduced into the vent pipe, and the gas flows into the spray head through the vent hole. The water stream forms a mist under the impact of the gas.

In order to ensure that the spray gun still has good sealing performance at high temperature for a long time, a graphite sealing gasket is mostly adopted, and meanwhile, after the spray gun is used for a certain time, the spray gun needs to be disassembled, repaired or maintained, so that the service life of the spray gun is prolonged.

In view of the above-mentioned related art, the inventor believes that, when the gasket is mounted again after the maintenance of the spray gun is completed, the gasket is easily deformed due to the excessive compression between the mounting flange and the connecting flange, and finally damaged.

SUMMERY OF THE UTILITY MODEL

In order to avoid the condition that sealed pad damaged because of excessively squeezing as far as possible, this application provides a sealed pad for spray gun.

The application provides a sealed pad for spray gun adopts following technical scheme:

the utility model provides a sealed pad for spray gun, is including piling up two graphite gaskets that set up between mounting flange and flange, be equipped with first limbers and first air vent on the graphite gasket, two be provided with the gusset plate between the graphite gasket, be equipped with on the gusset plate with the second limbers that first limbers aligns and with the second limbers that first air vent aligns.

Through adopting above-mentioned technical scheme, when screwing the bolt and making mounting flange be close to flange, the graphite gasket that is close to mounting flange can receive the extrusion and remove to the direction that is close to the gusset plate, the gusset plate can remove to the direction that is close to flange under the drive of graphite gasket, the graphite gasket that is close to flange can receive the extrusion of gusset plate and be close to flange, at the removal in-process of gusset plate and two graphite gaskets, the gusset plate provides the room of buffering for the pressure that the graphite gasket received, thereby improve the intensity of sealed pad, avoid sealed pad as far as possible to take place to damage because of excessive extrusion.

Preferably, the reinforcing plate is provided with a mounting hole for a bolt to pass through.

Through adopting above-mentioned technical scheme, set up the mounting hole on the gusset plate for the bolt of fixed mounting flange and flange can pass the mounting hole, carry on spacingly to the gusset plate, can avoid the gusset plate to lead to unnecessary wearing and tearing because of taking place the displacement when the spray gun uses, thereby further improvement is sealed the intensity of filling up.

Preferably, the mounting holes and the second ventilation holes are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, with the crisscross setting of mounting hole and air vent on the gusset plate, can effectively reduce the stress concentration of gusset plate on the straight line, can further promote the intensity of sealed pad.

Preferably, two end faces of the reinforcing plate are provided with limiting columns, and the length of the limiting columns exposed out of the surface of the reinforcing plate is smaller than the thickness of the graphite gasket.

Through adopting above-mentioned technical scheme, spacing post can restrict the space between mounting flange and the flange, avoids causing the damage to sealed pad because of the space undersize.

Preferably, the end face of the reinforcing plate is provided with a limiting groove, and the limiting column is inserted into the limiting groove; the tank bottom of spacing groove is equipped with the mounting groove, be equipped with magnet in the mounting groove, spacing post is close to the one end of gusset plate is equipped with the sheetmetal.

Through adopting above-mentioned technical scheme, can adsorb spacing post on the gusset plate through sheetmetal and magnet, the change of the spacing post of being convenient for can change the spacing post of different length according to the thickness of graphite gasket to control the space between two ring flanges, enlarged the sealed range of application who fills up.

Preferably, the edge of one end of the limiting column close to the reinforcing plate is arranged in a chamfer mode.

Through adopting above-mentioned technical scheme, under the guide effect of chamfer, spacing post can be more convenient insert the spacing groove, has made things convenient for the installation of spacing post.

Preferably, the limiting column is in threaded connection with the reinforcing plate.

Through adopting above-mentioned technical scheme, spacing post and gusset plate threaded connection, the change of the spacing post of being convenient for can enlarge the sealed range of application who fills up.

Preferably, all be equipped with the spacing ring on two terminal surfaces of gusset plate, the inside wall of spacing ring with the outside wall of graphite gasket is pasted.

Through adopting above-mentioned technical scheme, when installing the graphite gasket to the gusset plate, can fix a position the position of graphite gasket installation through the spacing ring, avoid the graphite gasket to have the deviation and the atress is uneven because of the mounted position to reach the effect that improves sealed pad intensity.

Preferably, the outer side wall of the graphite gasket is provided with a positioning block, the inner side wall of the limiting ring is provided with a positioning groove, and the positioning block extends into the positioning groove.

Through adopting above-mentioned technical scheme, under the positioning action of locating piece and constant head tank, first air vent can align with the second air vent, has made things convenient for the location of graphite gasket when the installation.

Preferably, the number of the positioning grooves is the same as the number of the second ventilation holes.

Through adopting above-mentioned technical scheme, the locating piece is when being located any one of a plurality of constant head tanks, and the air vent of graphite gasket all can align with the air vent on the gusset plate to it is more convenient to make the installation of graphite gasket.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a reinforcing plate is additionally arranged between the two graphite gaskets and can buffer the pressure on the graphite gaskets, so that the strength of the sealing gasket is increased, and the sealing gasket can be prevented from being damaged due to excessive extrusion as much as possible;

2. the reinforcing plate is provided with the limiting columns, so that the size of a gap between the mounting flange and the connecting flange can be limited, and the sealing gasket is prevented from being damaged due to the fact that the gap between the mounting flange and the connecting flange is too small;

3. set up spacing post into to dismantle, can change the spacing post of different length according to the thickness of graphite gasket to the height that makes spacing post expose the surface of gusset plate is slightly less than the thickness of graphite gasket all the time, has enlarged the sealed range of application who fills up.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an exploded view of a mounting flange in an embodiment of the present application.

Fig. 3 is a plan view of a reinforcing plate in the embodiment of the present application.

Fig. 4 is a schematic structural view of a reinforcing plate according to an embodiment of the present application.

Fig. 5 is an exploded view of a reinforcing plate in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a limiting column in the embodiment of the present application.

Fig. 7 is an enlarged view of a portion a in fig. 7.

Description of reference numerals: 1. a graphite gasket; 11. a first water passage hole; 12. a first vent hole; 13. positioning blocks; 2. a reinforcing plate; 21. a second water through hole; 22. a second vent hole; 23. mounting holes; 24. a limiting ring; 241. positioning a groove; 25. a limiting groove; 26. mounting grooves; 27. an external thread; 3. installing a flange; 31. a connecting flange; 32. a water pipe; 33. a breather pipe; 34. a spray head; 35. a bolt; 36. a nut; 4. a limiting column; 41. accommodating grooves; 42. an internal thread; 5. a magnet; 6. a metal sheet.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a sealing gasket for a spray gun. Referring to fig. 1 and 2, the gasket for a spray gun includes two graphite gaskets 1 stacked between a mounting flange 3 and a connecting flange 31, and a reinforcing plate 2 is disposed between the two graphite gaskets 1. The strength of the reinforcing plate 2 is higher than that of the graphite gasket 1. When the graphite gasket 1 is extruded, the reinforcing plate 2 can share the pressure applied to the graphite gasket 1, so that the overall strength of the sealing gasket can be improved.

The two graphite gaskets 1 are respectively provided with a first limber hole 11 and a first vent hole 12, the first vent holes 12 are positioned at the outer side of the first limber hole 11, and a plurality of first vent holes are distributed along the circumferential direction of the first limber hole 11; the reinforcing plate 2 is provided with a second through hole 21 and a second through hole 22, the second through hole 21 is aligned with the first through hole 11, the second through hole 22 is located on the outer side of the second through hole 21 and distributed with a plurality of along the circumferential direction of the second through hole 21, and the second through hole 22 is aligned with the corresponding first through hole 12.

The end of the mounting flange 3 far away from the reinforcing plate 2 is provided with a water pipe 32 and a vent pipe 33, the end of the connecting flange 31 far away from the reinforcing plate 2 is provided with a spray head 34, water in the water pipe 32 flows into the spray head 34 through the first water through hole 11 and the second water through hole 21, and gas in the vent pipe 33 flows into the spray head 34 through the first vent hole 12 and the second vent hole 22.

The mounting flange 3 and the connecting flange 31 are connected with each other through bolts 35 and nuts 36, and the reinforcing plate 2 is provided with mounting holes 23 through which the bolts 35 pass.

Referring to fig. 3, the mounting holes 23 and the second vent holes 22 of the reinforcing plate 2 are staggered, and the second vent holes 22 are not located on a straight line connecting the mounting holes 23 and the second vent holes 21, thereby reducing stress concentration of the reinforcing plate 2 on the straight line.

Referring to fig. 4 and 5, both ends of the reinforcing plate 2 are provided with a limiting ring 24, the inner side wall of the limiting ring 24 is attached to the outer side wall of the graphite gasket 1, and the height of the limiting ring 24 is lower than the thickness of the graphite gasket 1. The limiting ring 24 is arranged on the end face of the reinforcing plate 2, so that the graphite gasket 1 can be conveniently positioned when the graphite gasket 1 is installed on the reinforcing plate 2.

The positioning block 13 is arranged on the outer side wall of the graphite gasket 1, the positioning groove 241 for inserting the positioning block 13 is arranged on the inner side wall of the limiting ring 24, the positioning groove 241 is uniformly distributed along the circumferential direction of the limiting ring 24, and the number of the positioning grooves 241 is the same as that of the second ventilation holes 22. When the graphite gasket 1 is installed on the reinforcing plate 2, the positioning block 13 is only required to be aligned to one of the positioning grooves 241, so that the first vent hole 12 and the second vent hole 22 can be aligned, and the graphite gasket 1 is convenient to install.

Referring to fig. 5, both ends of the reinforcing plate 2 are provided with a limiting post 4, the end surface of the reinforcing plate 2 is provided with a limiting groove 25, one end of the limiting post 4 close to the reinforcing plate 2 is inserted into the limiting groove 25, and the length of the limiting post 4 exposed out of the surface of the reinforcing plate 2 is slightly smaller than the thickness of the graphite gasket 1. The spacing column 4 can limit the distance between the mounting flange 3 and the connecting flange 31, so that the problem that the gasket is excessively extruded due to the fact that the gap between the mounting flange 3 and the connecting flange 31 is too small is solved.

As an installation method of the limiting column 4, referring to fig. 5, an installation groove 26 is formed at the bottom of the limiting groove 25, and a magnet 5 with the same size as the installation groove 26 is arranged in the installation groove 26; spacing post 4 is close to the one end of gusset plate 2 and is equipped with sheetmetal 6, is equipped with the holding tank 41 that holds sheetmetal 6 on the spacing post 4, and magnet 5 and sheetmetal 6 absorption are passed through to the one end that spacing post 4 is close to gusset plate 2 in spacing inslot 25. The edge of the limiting column 4 close to one end of the reinforcing plate 2 is arranged as a chamfer, so that the limiting column 4 can be conveniently inserted into the limiting groove 25, and the installation of the limiting column 4 is facilitated.

As another installation method of the limiting column 4, referring to fig. 6 and 7, an internal thread 42 is provided on a side wall of one end of the limiting column 4 close to the reinforcing plate 2, an external thread 27 is provided on a groove wall of the limiting groove 25, and one end of the limiting column 4 close to the reinforcing plate 2 is connected in the limiting groove 25 by a thread.

The implementation principle of the embodiment is as follows: when the sealing gasket is installed, the positioning block 13 on the outer side wall of the graphite gasket 1 is aligned to any one positioning groove 241, the outer side wall of the graphite gasket 1 is aligned to the inner side wall of the limiting ring 24, then the graphite gasket 1 is bonded to the end face of the reinforcing plate 2, and at the moment, under the positioning action of the positioning block 13 and the positioning groove 241, the alignment of the first vent hole 12 and the second vent hole 22 can be ensured; then, the limiting column 4 with proper length is selected according to the thickness of the graphite gasket 1, and the limiting column 4 is inserted into the limiting groove 25. It should be noted that, after the installation of the limiting column 4 is completed, the length of the limiting column 4 exposed out of the surface of the reinforcing plate 2 must not be greater than the thickness of the graphite gasket 1, otherwise, the graphite gasket 1 cannot play a role in sealing.

By additionally arranging the reinforcing plate 2 between the two superposed graphite gaskets 1, the graphite gasket 1 close to the mounting flange 3 can move towards the direction close to the reinforcing plate 2 when being subjected to the pressure from the mounting flange 3, the reinforcing plate 2 can move towards the direction close to the connecting flange 31 under the driving of the graphite gasket 1, meanwhile, the graphite gasket 1 close to the connecting flange 31 can be extruded by the reinforcing plate 2 and moves towards the direction close to the connecting flange 31, and in the moving process of the reinforcing plate 2 and the two graphite gaskets 1, the reinforcing plate 2 provides a buffer room for the pressure on the two graphite gaskets 1, so that the hardness of the integral sealing gasket is improved;

both ends at gusset plate 2 all set up detachable spacing post 4, and the length that spacing post 4 exposes gusset plate 2 surface is a little less than graphite gasket 1's thickness, can improve the problem that sealed pad produces the damage because of excessive extrusion.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sealing gasket for a spray gun is characterized in that: including piling up two graphite gaskets (1) that set up between mounting flange (3) and flange (31), be equipped with first limbers (11) and first air vent (12), two on graphite gasket (1) be provided with reinforcing plate (2) between graphite gasket (1), be equipped with on reinforcing plate (2) with second limbers (21) that first limbers (11) align and with second venthole (22) that first air vent (12) align.

2. The gasket for a spray gun according to claim 1, wherein: and the reinforcing plate (2) is provided with a mounting hole (23) for a bolt (35) to pass through.

3. The gasket for a spray gun according to claim 2, wherein: the mounting holes (23) and the second ventilation holes (22) are arranged in a staggered mode.

4. The gasket for a spray gun according to claim 2, wherein: two end faces of the reinforcing plate (2) are provided with limiting columns (4), and the length of the limiting columns (4) exposed out of the surface of the reinforcing plate (2) is smaller than the thickness of the graphite gasket (1).

5. The gasket for a spray gun according to claim 4, wherein: the end face of the reinforcing plate (2) is provided with a limiting groove (25), and the limiting column (4) is inserted into the limiting groove (25); the tank bottom of spacing groove (25) is equipped with mounting groove (26), be equipped with magnet (5) in mounting groove (26), spacing post (4) are close to the one end of gusset plate (2) is equipped with sheetmetal (6).

6. The gasket for a spray gun according to claim 5, wherein: the edge of one end, close to the reinforcing plate (2), of the limiting column (4) is arranged in a chamfer mode.

7. The gasket for a spray gun according to claim 4, wherein: the limiting column (4) is in threaded connection with the reinforcing plate (2).

8. The gasket for a spray gun according to claim 1, wherein: both end faces of the reinforcing plate (2) are provided with limiting rings (24), and the inner side walls of the limiting rings (24) are attached to the outer side walls of the graphite gaskets (1).

9. The gasket for a spray gun of claim 8, wherein: be equipped with locating piece (13) on the lateral wall of graphite gasket (1), be equipped with constant head tank (241) on the inside wall of spacing ring (24), locating piece (13) stretch into in constant head tank (241).

10. The gasket for a spray gun of claim 9, wherein: the number of the positioning grooves (241) is the same as that of the second ventilation holes (22).