CN212189658U - Bellows sealing spray gun - Google Patents

Abstract

The utility model discloses a bellows sealing spray gun, which comprises a bellows, a joint and a pull rod, wherein one side of the joint is provided with the bellows, the middle part of the outer side of the bellows is provided with a transition ring, the other end of the bellows is provided with a base, the other side of the joint is provided with a packing gland nut, the inside of the joint is provided with the pull rod, the outer side of one end of the pull rod is provided with polytetrafluoroethylene packing, the top of the pull rod is provided with a coupling, the upper end of the coupling is provided with a bottom valve cylinder, the lower end of the pull rod is provided with a packing sealing seat, the utility model utilizes the polytetrafluoroethylene packing to be still kept as a second sealing measure, the sealing can be realized by the packing in case of bellows rupture, the sliding sealing of a leakage point possibly existing in the whole structure of the filling spray gun can, the leakage risk at the position is reduced, and the sealing structure of the whole set of filling spray gun is more reliable.

Description

Bellows sealing spray gun

Technical Field

The utility model relates to a spray gun technical field, concretely relates to bellows seal spray gun.

Background

A spray gun is a device that uses a quick release of liquid or compressed air as a motive force. The spray gun is divided into a normal pressure type spray gun and a pressurized spray gun. The spray gun also comprises a pressure type spray gun, a Kale type spray gun and an automatic recovery type spray gun. The spray gun can be directly used for loading paint in the industry, namely the simple spray gun can be installed in automatic equipment, such as an automatic glue sprayer, an automatic glue spreader, an automatic paint sprayer, a coating machine and other spraying equipment. The spray gun comprises a gun body and a gun head, wherein the gun body is connected with the gun head through a connecting mechanism; the gun head comprises a nozzle, and a plurality of metal round steel bars are welded in the nozzle in a plug welding manner; the connecting mechanism comprises a flange and a chain pin, and the nozzle is manufactured into a flat shape; the replacement is more convenient, the cost is lower, and the falling and abrasion of the gun head can be effectively prevented. The existing filling spray gun mainly comprises a feeding pipe, a discharging pipe, a bottom valve pull rod, a ground valve cylinder and the like, and the bottom valve is opened and closed by pushing and pulling the bottom valve cylinder.

The sealing packing that constantly rubs of current filling spray gun pull rod in push-and-pull process, lead to packing sealed inefficacy in the short time, can only fill the maintenance repeatedly through extrusion many times, influence work efficiency, and the material of leaking also can pollute operational environment, harm operating personnel's physical and mental health, the extrusion of packing is also not tight better more in addition, because the extrusion of packing is tight can increase and the frictional force between the pull rod, the bottom valve cylinder need overcome bigger frictional force and open or close the bottom valve, and closing of bottom valve also needs sufficient pulling force to realize sealedly, it is tight very easily to lead to the bottom valve to close not in place and arouse the bottom valve to leak to fill.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the current filling spray gun pull rod that prior art exists and constantly rubbing the sealing packing at the push-and-pull in-process, lead to the packing to seal out of work in the short time, can only fill the maintenance repeatedly through a lot of extrusion, influence work efficiency, and the material of leakage also can pollute operational environment, harm operating personnel's physical and mental health, the extrusion of packing is not tight better more yet, because the too tight frictional force between can increase and pull rod of packing extrusion, the bottom valve cylinder need overcome bigger frictional force and open or close the bottom valve, and closing of bottom valve also needs sufficient pulling force just can realize sealing, it leads to the bottom valve to close not in place and arouse the bottom valve leakage problem very easily to pack to be tight, a bellows sealing spray gun is provided, this bellows for the sealing spray gun replaces the packing to seal, can solve these two problems well. The sealing of the filling position can be ensured, and the opening and closing of the bottom valve can be ensured to the maximum extent by the push-pull force of the bottom valve cylinder.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bellows seal spray gun, includes bellows, connects and pull rod, it is provided with the bellows to connect one side, bellows outside middle part is provided with the transition ring, the bellows other end is provided with the base, it is provided with packing gland nut to connect the opposite side, connect inside being provided with the pull rod, pull rod one end outside is provided with the tetrafluoro and packs, the pull rod top is provided with the shaft coupling, the shaft coupling upper end is provided with the bottom valve cylinder, the pull rod lower extreme is provided with the packing seal receptacle.

Preferably, the base is fixedly connected with the pull rod in a welding mode.

Preferably, a welding part is arranged between the corrugated pipe and the pull rod, and the corrugated pipe is fixedly connected with the pull rod through the welding part.

Preferably, the bottom of the sealing corrugated pipe is provided with a gun barrel.

Preferably, the number of the transition rings is at least two, and the transition rings are uniformly fixed on the outer side of the corrugated pipe.

Preferably, the lower end of the packing seal seat is provided with a seal corrugated pipe.

Compared with the prior art, the utility model provides a bellows seal spray gun possesses following beneficial effect:

1. the utility model discloses utilize the bellows, can make the bellows can be vertically flexible, satisfy the pull rod and vertically reciprocating motion under the drive of bottom valve cylinder, utilize the transition ring, can guarantee that bellows longitudinal displacement reaches 50mm to a plurality of transition rings can connect a plurality of bellows, cooperate the use, utilize the base, can weld base and pull rod, isolate the material outside the bellows, utilize the joint, can be used for fixed bellows and outside material pipe;

2. the utility model discloses utilize the tetrafluoro packing, can still remain as second kind of sealed measure, in case the bellows breaks can also realize sealedly with packing, through the application that replaces packing with the flexible performance of bellows, can change the sliding seal of the leak point that probably exists in the whole structure of filling spray gun into the static seal, reduce the leakage risk here, make the seal structure of the whole set of filling spray gun more reliable;

the part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization provides very big help for people.

Drawings

Fig. 1 is a front view of a bellows seal spray gun according to the present invention;

fig. 2 is a schematic structural view of a bellows seal spray gun according to the present invention;

description of the reference numerals

1. A base; 2. a bellows; 3. a transition ring; 4. a joint; 5. a tetrafluoro filler; 6. packing gland nuts; 7. a pull rod; 8. a bottom valve cylinder; 9. a coupling; 10. a packing seal seat; 11. sealing the corrugated pipe; 12. welding; 13. a barrel.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a bellows sealing spray gun comprises a bellows 2, a joint 4 and a pull rod 7, wherein the bellows 2 is arranged on one side of the joint 4, the bellows 2 can be longitudinally stretched by utilizing the bellows 2, the pull rod 7 can longitudinally reciprocate under the drive of a bottom valve cylinder 8, a transition ring 3 is arranged in the middle of the outer side of the bellows 2, the longitudinal displacement of the bellows 2 can be ensured to reach 50mm by utilizing the transition ring 3, a plurality of transition rings 3 can be connected with a plurality of bellows 2 and are used in a matched manner, the sliding seal of a leakage point possibly existing in the whole structure of the filling spray gun can be changed into static seal by utilizing the expansion performance of the bellows 2 to replace the application of a filler, the leakage risk at the position is reduced, the sealing structure of the whole filling spray gun is more reliable, the base 1 is arranged on the other end of the bellows 2, and the base 1 can, completely cut off the material in bellows 2 outsidely, utilize and connect 4, can be used for fixed bellows 2 and outside material pipe, it is provided with packing gland nut 6 to connect 4 opposite sides, connect 4 inside pull rods 7 that are provided with, the 7 one end outsides of pull rod are provided with tetrafluoro and pack 5, utilize tetrafluoro to pack 5, can still remain as the sealed measure of second kind, in case the bellows breaks and can also realize sealedly with packing, 7 tops of pull rod are provided with shaft joint 9, shaft joint 9 upper end is provided with bottom valve cylinder 8, 7 lower extremes of pull rod are provided with packing seal receptacle 10.

The utility model discloses in, preferred, base 1 and pull rod 7 are provided with welding department 12 through welded mode fixed connection between bellows 2 and the pull rod 7, and bellows 2 passes through welding department 12 fixed connection with pull rod 7, and sealed bellows 11 bottom is provided with barrel 13, and transition ring 3 is provided with two at least, and evenly fixes in the bellows 2 outside, and the 10 lower extremes of packing seal receptacle are provided with sealed bellows 11.

The utility model discloses a theory of operation and use flow: when in use, the corrugated pipe 2 can be longitudinally stretched and contracted to meet the requirement that the pull rod 7 longitudinally reciprocates under the driving of the bottom valve cylinder 8, the transition ring 3 can ensure that the longitudinal displacement of the corrugated pipe 2 reaches 50mm, and a plurality of transition rings 3 can be connected with a plurality of corrugated pipes 2 and used in a matching way, the base 1 can weld the base 1 and the pull rod 7 to isolate materials outside the corrugated pipes 2, the joint 4 can be used for fixing the corrugated pipes 2 and external material pipes, the PTFE packing 5 can be still reserved as a second sealing measure, and in case of corrugated pipe rupture, the packing can be used for realizing sealing, through the application of replacing the packing with the flexible performance of bellows 2, can change the sliding seal of the leakage point that probably exists in the whole structure of filling spray gun into static seal, reduce the leakage risk here, make the seal structure of whole filling spray gun more reliable.

The utility model discloses utilize bellows 2, can make bellows 2 can be vertically flexible, satisfy pull rod 7 longitudinal reciprocating motion under the drive of bottom valve cylinder 8, utilize transition ring 3, can guarantee that bellows 2 longitudinal displacement reaches 50mm to a plurality of transition rings 3 can connect a plurality of bellows 2, cooperate the use, utilize base 1, can weld base 1 and pull rod 7, isolate the material outside bellows 2, utilize joint 4, can be used for fixed bellows 2 and outside material pipe;

the utility model discloses utilize tetrafluoro filler 5, can still remain as second kind of sealed measure, in case the bellows breaks can also realize sealedly with the filler, through the application that replaces the filler with the flexible performance of bellows 2, can change the sliding seal of the leakage point that probably exists in the whole structure of filling spray gun into static seal, reduce the leakage risk here, make the seal structure of the whole set of filling spray gun more reliable;

the part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization provides very big help for people.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.

Claims (5)

1. The utility model provides a bellows seal spray gun, includes bellows (2), connects (4) and pull rod (7), its characterized in that: the improved corrugated pipe joint is characterized in that a corrugated pipe (2) is arranged on one side of the joint (4), a transition ring (3) is arranged in the middle of the outer side of the corrugated pipe (2), a base (1) is arranged at the other end of the corrugated pipe (2), a packing gland nut (6) is arranged on the other side of the joint (4), a pull rod (7) is arranged inside the joint (4), polytetrafluoroethylene packing (5) is arranged on the outer side of one end of the pull rod (7), a coupling (9) is arranged at the top of the pull rod (7), a bottom valve cylinder (8) is arranged at the upper end of the coupling (9), and a packing sealing seat (10) is arranged at the.

2. Bellows seal lance according to claim 1, characterized in that the foundation (1) is fixedly connected to the tie rod (7) by welding.

3. Bellows sealing lance according to claim 1, wherein a weld (12) is provided between the bellows (2) and the tie rod (7), the bellows (2) and the tie rod (7) being fixedly connected by the weld (12).

4. Bellows-seal lance according to claim 1, characterized in that the packing seal seat (10) is provided at its lower end with a sealing bellows (11), the sealing bellows (11) being provided at its bottom with a barrel (13).

5. Bellows-seal lance according to claim 1, characterized in that the transition ring (3) is provided in at least two and is fixed uniformly outside the bellows (2).

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