CN2370967Y

CN2370967Y - Spray pistol

Info

Publication number: CN2370967Y
Application number: CN 99226941
Authority: CN
Inventors: 汤明长
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-12
Filing date: 1999-06-12
Publication date: 2000-03-29
Anticipated expiration: 2009-06-12

Abstract

The utility model relates to a spray gun, which is provided with convenient assembly and disassemble and good tightness, and is suitable for various types of gap fillers. The utility model comprises a gun body, a handle, a thimble, a conveying pipe, a trigger, and a containing seat for installing a material tank. The utility model has the advantages that the sealing performance of the gun body is good; the connection of a connecting valve and the material tank is tight; the conveying pipe and the gun body use shoulder type matching, and the repair and the cleanness are convenient, and additionally has the advantages of simple manufacturing technique, and low cost.

Description

A kind of spray gun

The utility model is a kind of spray gun, particularly foam gap filler operation apparatus.

Cranny filler of polyurethane foam more and more is applied to joint filling and the insulation in insulation engineering, the building decoration industry and receives in the engineerings such as limit engineering and sound insulation, insulation, dustproof and waterproof leak stopping.In implementation and operation, the adapted spray gun advances in all kinds of slits and the job site with injection efficiently and accurately usually.General common spray gun comprises that rifle body, handle, conveying pipeline and thimble constitute with assemblies such as being connected valve, by pulling the trigger of rifle body, make the thimble of conveying pipeline move, in conveying pipeline and connection valve and the tinning of foam gap filler vacuum packet, form pressure differential, and gap filler is outwards penetrated along the muzzle on conveying pipeline top.Yet, the discharging opening of existing gap filler batch can, two kinds of forms of center discharging and edge discharging are generally arranged, comprise that spool 51 is different owing to the discharging form with discharging opening 52 (seeing Fig. 1, Fig. 2), various batch cans not of uniform size, the shape that connects valve is also different, and therefore spray gun also designs separately with the connection valve that is connected batch can usually, to be suitable for respectively, make troubles to the user like this.In the prior art, single injection-molded is all adopted in the junction of conveying pipeline and rifle body simultaneously, thereby can't dismantle to cause and repair and clean difficulty; In addition, thorax is comparatively simple and crude with the sealing mechanism that is connected supporting place of rifle body and thimble in the rifle body, causes the gap filler reverse flow often in rifle body and handle, so that spray gun damages and can't repair.

The purpose of this utility model is to propose a kind of spray gun of installing and removing convenience, good seal performance and being suitable for all kinds gap filler.

The purpose of this utility model is achieved by following technical scheme: in the room of rifle body installation batch can a valve seat is set, to be connected with batch can, valve seat is truncated cone-shaped, so that batch can be realized close the combination with valve seat.

In addition, rifle body and conveying pipeline are made respectively, away from the nozzle place at least one sealing ring are set at conveying pipeline, and then the conveying pipeline group is gone into the rifle body, and structure leads to the conveying pipeline thorax, and closely cooperating of thorax played the purpose of sealing and assembling conveying pipeline in mat sealing ring and the rifle body.

Secondly, the nearly trigger of thorax place is provided with a multi-sealed combination in the rifle body so that thimble can be in the conveying pipeline thorax activity freely, and avoid gap filler from then on to connect the reverse flow of supporting place in rifle body and handle.

Relatively prior art the utlity model has rifle body good seal performance; Connecting valve is connected with batch can closely; Conveying pipeline adopts detachable to cooperate with the rifle body, is convenient to advantages such as repairing and cleaning.In addition, manufacturing process is simple, and cost is lower.

Fig. 1 is the batch can center discharging opening schematic diagram of prior art.

Fig. 2 is the batch can edge discharging opening schematic diagram of prior art.

Fig. 3 is the utility model combination schematic diagram.

Fig. 4 is the utility model conveying pipeline and rifle body cooperation figure.

Fig. 5 A is a partial exploded view in the utility model conveying pipeline thorax.

Fig. 5 B is a local combination schematic diagram in the utility model conveying pipeline thorax.

Fig. 6 is the utility model nozzle schematic diagram.

Fig. 7 is that the utility model batch can connects the valve schematic diagram.

Below in conjunction with accompanying drawing, the utility model is further described: with reference to pattern 3, this spray gun comprises rifle body 1, handle 2, thimble 3, conveying pipeline 4, thimble switch 5, trigger 6, room 8, connects assemblies such as valve 7 and amount adjusting valve 30.

Please consult Fig. 7 and Fig. 3 earlier, above rifle body 1, establish a room 8, so that batch can 23 is connected on it, and by connecting valve 7 connection conveying pipeline thoraxes 25, the valve seat 31 that connects batch can 23 is truncated cone-shaped, by this round platform design, so that the batch can discharging opening 24 of different sizes is when cooperating with it, connecting ring 32 is formed cooperation closely by distending with the valve seat 31 that connects valve.This design simultaneously can be satisfied the needs of different batch can discharging openings.

Please refer to Fig. 4, end at conveying pipeline 4 is provided with along the groove 9 in pipe week, can ccontaining sealing ring 10 in the groove 9, and location snap ring 11, rifle body location is covered 12 and can be held conveying pipeline 4 and pass from the middle part, the location is covered and is established boss 13 in 12, locating on the snap ring 11 with overhead, the location cover 12 and is combined with in the part insertion rifle body 1 that is provided with locating ring 11 at conveying pipeline 4 by screw thread with rifle body 1 simultaneously, location snap ring 11 then between rifle body 1 and collar extension, locate and cover 12 when combining with rifle body 1, just lean on it, to play the role of positioning by boss 13.

Refer again to Fig. 5 A, one sealing mechanism 28 is set in the conveying pipeline thorax 25 of rifle body 1, comprise bolt 14, its middle part has through hole 20, can hold thimble 3 passes, and also be provided with seal cavity 21 in the bolt 14, wherein can ccontaining bench-type sealing ring 15, sealing shroud 16. and described sealing shroud and sealing ring be concentric circle holes, and can hold thimble 3 and pass.Sealing ring and sealing shroud group are gone into seal cavity 21, constitute the sealing mechanism shown in Fig. 5 B.It can make thimble 3 move therein.And because the effect of sealing mechanism can not make gap filler along the thimble countercurrent.

See also Fig. 6 again, spray tip 26 places are designed to truncated cone-shaped, and thimble 3 closely withstands nozzle 26 inboards in conveying pipeline 4, to guarantee in the conveying pipeline partition with outside air.26 at the nozzle of truncated cone-shaped can cooperate installs injection needle 27, to satisfy the slit of various sizes.

During use batch can is inserted in room 8,, can regulates thimble 3 by the adjusting trigger and move, penetrate from the rifle nozzle with the control gap filler to direction away from nozzle 26 to be fixedly connected on the spray gun.Work as releasing trigger, borrow the effect of spring 29, will decide thimble and push nozzle to, close spray gun.

Claims

1, a kind of spray gun comprises rifle body, handle, thimble, conveying pipeline and trigger at least, it is characterized in that: the rifle body is provided with the holder that batch can is installed, and establishes in the holder to go out the valve that is connected that bottleneck joins with batch can, and the valve that connects valve is truncated cone-shaped.

2, spray gun as claimed in claim 1 is characterized in that being provided with a multi-sealed combination in the conveying pipeline thorax of rifle body.

3, spray gun as claimed in claim 1 or 2 is characterized in that multi-sealed combination is some sealing rings, the sealing shroud that is placed on the thimble, and sealing ring, sealing shroud are contained in the seal cavity of bolt hole.

4, spray gun as claimed in claim 1 or 2 is characterized in that the junction of conveying pipeline and rifle body is provided with some sealing rings, and sealing ring is placed in outside the conveying pipeline.

5, spray gun as claimed in claim 4 is characterized in that being embedded with on the conveying pipeline location snap ring.

6, spray gun as claimed in claim 5 is characterized in that establishing boss in the locator card lid, and boss blocks locating ring on the rifle body.

7, spray gun as claimed in claim 1 is characterized in that spray gun conveying pipeline nozzle is truncated cone-shaped.