CN201371098Y

CN201371098Y - Polyurethane foam gun

Info

Publication number: CN201371098Y
Application number: CN200820208818U
Authority: CN
Inventors: 高益松
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-12-30
Anticipated expiration: 2018-12-31

Abstract

The utility model discloses a polyurethane foam gun, which belongs to the field of operation technology, solves the problems that the prior polyurethane foam gun is inconvenient for the adjustment stroke and adjustment screws and has poor sealing property, and comprises a gun body, and a gun barrel and a feeding valve component which are fixedly connected with the gun body. A material spray nozzle is arranged on the front end of the gun barrel, a needle valve capable of axially sliding along the gun barrel is arranged in the gun barrel, the material spray nozzle arranged on the front end of the needle valve is of sealing, the back end of the gun barrel is inserted into the gun body and fixedly connected with a guide post, a trigger articulated on the gun body is propped against the front end of the guide post, a needle valve spring seat is fixed on the gun body, a needle valve spring capable of leading the needle valve to reset is arranged between the guide post and the needle valve spring seat, two ends of the needle valve spring are respectively propped against the guide post and the needle valve spring seat, and a regulating mechanism capable of regulating and controlling the stroke of the needle valve is arranged on the needle valve spring seat. The polyurethane foam gun has the advantages of a few parts, low manufacturing cost, good sealing property, and consistent pre-pressure of the needle valve spring and long service life, and the parts is not easy to loose and fall off when in rotation.

Description

The polyurethane foam rifle

Technical field

The utility model belongs to the operation technique field, relates to a kind of injection apparatus, particularly a kind of polyurethane foam rifle.

Background technology

After door frame, window frame were installed in architectural engineering, itself and between the walls left the slit, also can leave the slit after the installations such as some equipment, pipeline, must carry out filling and fill a vacancy.Generally all subsidize in the time of the earliest, all utilize polyurethane foams to subsidize at present mostly with materials such as cement, this material have easy to use again can leakproof the advantage of insulation.Polyurethane foams be packaged in the pressurized tank and isolated with air, because of its characteristic be when with can foamed solidification after air contact, thereby use the instrument that polyurethane foams filling slit need special use.

So people are at the characteristic of above-mentioned material, various polyurethane foam rifles have been designed, but existing foam gun all exists, and serviceability is poor, life-span weak point, complex structure, cost height, operation inconvenience, part easily rotation come off, particularly in the rifle chamber and the sealing of isolate from outer air poor, air leaks enters and produces polyurethane foams curing in the rifle chamber, stops up gun barrel and causes the critical defect that foam gun lost efficacy.For example the bleeder valve of some foam gun is with the fixing flat shim of fixed cover, flat shim contacts combination with pin plug concave-convex, the check valve of inlet valve contacts combination by steel ball with flat shim, also with the fixing flat shim of fixed cover, more than two kinds all exist poor sealing performance, complex structure, part many, cause production process various, thereby improved defectives such as production cost.Also have existing foam gun injection flow set screw be pin plug spring base be again the double action that forms set screw, its shortcoming is that pin plug pre-pressure of the spring can change with the stroke adjusting, it is inconsistent that generation discharging valve seal is paid the pressure power, thereby cause the seepage phenomenon, cause blowing agent in gun barrel, to solidify and lost efficacy.The stroke adjustment screw of this structure easily revolves to take off to lose and causes that foam gun can't work, and also exists the stroke adjustment screw to be subjected to the effect of pin plug spring pressure, and it is big more to regulate revolving force, operates dumb.

Summary of the invention

The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of excellent sealing performance that has, and stops air leaks in the rifle chamber and cause that blowing agent solidifies and cause the high-performance of inefficacy, the polyurethane foam rifle of long service life.

Another purpose of the present utility model is that the precompression unanimity of project organization advantages of simple, pin plug spring, flexible to operation, part are difficult for revolving and take off the polyurethane foam rifle of losing.

The purpose of this utility model can realize by following technical proposal: a kind of polyurethane foam rifle, comprise rifle body and the gun barrel and the inlet valve parts that are connected on the rifle body, the front end of gun barrel is provided with feed nozzle, being provided with in gun barrel can be along gun barrel pin plug in axial sliding, the front end feed nozzle of pin plug forms sealing, the rear end penetrates the rifle body and is fixed with lead, at the front end of lead against the trigger that is hinged on the rifle body is arranged, it is characterized in that, be fixed with pin plug spring base on the described rifle body, between lead and pin plug spring base, be provided with the pin plug spring that the pin plug is resetted, the two ends of pin plug spring are resisted against respectively on lead and the pin plug spring base, are provided with at pin plug spring base and can regulate the governor motion that control pin plug forms.

The pin plug both ends of the spring of pin plug acts on lead and the pin plug spring base all the time owing to reset, and governor motion and pin plug spring base are splits simultaneously, thereby the precompression one of realizing pin plug spring is made peace and made things convenient for the stroke of metering needle plug.

In above-mentioned polyurethane foam rifle, described governor motion is to be arranged on the pin plug spring base and the stroke adjustment screw energy axially-movable.As long as adjustment stroke set screw axial position on pin plug spring base easily, the distance between adjustment stroke set screw end face and the lead just, thus control the stroke of pin plug very easily.The axial location of this structure adjustment stroke set screw can't be subjected to the influence of pin plug spring, so the adjustment stroke set screw is very light.

In above-mentioned polyurethane foam rifle, between described stroke adjustment screw and the pin plug spring base by being threaded.

In above-mentioned polyurethane foam rifle, the end of described stroke adjustment screw is passed pin plug spring base and is provided with jump ring in the end.Jump ring is set is to occur revolving taking off when the accommodative excess and lose, cause to realize metering needle plug stroke phenomenon for fear of the stroke adjustment screw.

In above-mentioned polyurethane foam rifle, described inlet valve parts comprise and are fixed on charging joint chair on the rifle body, has feeding-passage on the charging joint chair, on feeding-passage, has taper surface, be provided with spring base, spring, spool in feeding-passage, spring one end acts on the spring base, and the other end acts on the spool, under the single effect of spring, spool and taper surface form sealing.

In above-mentioned polyurethane foam rifle, described spool is hemispherical.

In above-mentioned polyurethane foam rifle, described spool adopts elastomeric material to make.

In above-mentioned polyurethane foam rifle, be provided with the connection sealing gasket between described charging joint chair and the rifle body.

In above-mentioned polyurethane foam rifle, described feed nozzle comprises the feed nozzle body and is arranged on feed nozzle sealing gasket in the feed nozzle body, and the head of described pin plug is tapered and form sealing in the feed nozzle sealing gasket.

In above-mentioned polyurethane foam rifle, the rifle body at described pin plug and the rifle body place of linking is provided with airtight and watertight padding and is fixed on the sealed screw that is used for fixing airtight and watertight padding on the rifle body.

Compared with prior art, this polyurethane foam rifle have that part is few, precompression unanimity, the part of low cost of manufacture, good airproof performance, pin plug spring be difficult for revolving take off lose, the advantage of long service life.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of this polyurethane foam rifle.

Fig. 2 be this polyurethane foam rifle feed nozzle enlarged diagram.

Fig. 3 is the enlarged diagram of the inlet valve parts of this polyurethane foam rifle.

Fig. 4 is the back sealing of this polyurethane foam rifle and the enlarged diagram of injection flow adjustment structure.

Among the figure, 1, the rifle body; 2, pikestaff; 3, set bolt; 4, charging joint chair; 4a, feeding-passage; 4b, taper surface; 5, spool; 6, spring; 7, spring base; 8, connect sealing gasket; 9, gun barrel; 10, pin plug; 11, feed nozzle body; 11a, taper seat; 12, feed nozzle sealing gasket; 13, airtight and watertight padding; 14, sealed screw; 15, trigger; 16, pin plug spring; 17, lead; 18, pin plug spring base; 19, stroke adjustment screw; 20, passage; 21, pilot hole.

The specific embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

As shown in Figure 1, this polyurethane foam rifle comprises rifle body 1, gun barrel 9, feed nozzle, trigger 15, inlet valve parts, lead 17, pin plug spring 16, pin plug spring base 18, governor motion.

Specifically, posterior end at rifle body 1 is fixed with pikestaff 2 with set bolt 3, is provided with governor motion and pin plug spring base 18 in the rear end of rifle body 1, and trigger 15 is hinged on the middle part of rifle body 1, gun barrel 9 is fixed on the front end of rifle body 1, and the inlet valve parts are fixed on the last front end of rifle body 1 by screw thread.The rear end of gun barrel 9 is fixed on the rifle body 1, and the front end of gun barrel 9 is provided with feed nozzle.Be provided with pin plug 10 in gun barrel 9, the front end of pin plug 10 and feed nozzle form sealing, and the rear end penetrates rifle body 1 and is fixed with lead 17.Above-mentioned trigger 15 is resisted against on the front end face of lead 17, and cocking 15 can make lead 17 drive pin plug 10 and move axially in rifle body 1 together.Pin plug spring 16 is arranged in the rifle body 1 and is between pin plug spring base 18 and the lead 17, the two ends of pin plug spring 16 are resisted against respectively on pin plug spring base 18 and the lead 17, pin plug 10 can reset and can make the precompressed length unanimity of pin plug spring 16 simultaneously under the effect of pin plug spring 16, and the precompression of generation is also consistent.

As depicted in figs. 1 and 2, feed nozzle comprises feed nozzle body 11 and is pressed into the feed nozzle sealing gaskets 12 that adopt rubber-plastics materials to make in the feed nozzle body 11, and pin plug 10 heads are tapered, i.e. taper seat 11a, pin plug 10 heads and feed nozzle sealing gasket 12 can form and seal pair.

As shown in figures 1 and 3, the inlet valve parts comprise by being threaded and are fixed on charging joint chair 4 on the rifle body 1, are provided with between charging joint chair 4 and rifle body 1 and improve the connection sealing gasket 8 of sealing between the two.Have a feeding-passage 4a on the charging joint chair 4, on rifle body 1, have the passage 20 of a feeding-passage 4a of UNICOM and gun barrel 9.Have taper surface 4b at feeding-passage 4a place, in feeding-passage 4a, be provided with spring 6, spool 5 and be fixed on spring base 7 on the charging joint chair 4.The two ends of spring 6 are resisted against respectively on spring base 7 and the spool 5, and spool 5 adopts elastomeric material to make and is hemispherical, has the convex body of a column on the ball plane, and convex body inserts in the spring 6.Under the single effect of spring 6, spool 5 and taper surface 4b can form sealing and pay, and in fact said structure constitutes a check valve.

As shown in Figure 4, have a pilot hole 21 in the rifle body 1, be provided with lead 17 and pin plug spring 16 in pilot hole 21, the rear end of pilot hole 21 is fixed with pin plug spring base 18.Pin plug 10 passes rifle body 1 again after penetrating rifle body 1, passes trigger 15 again and is connected mutually with lead 17, and the rear end of lead 17 has cylindrical raised line, and raised line penetrates in the pin plug spring 16.Pass rifle body 1 place at pin plug 10 and be arranged with and adopt the airtight and watertight padding 13 that rubber-plastics material makes and be fixed on the sealed screw 14 that is used for fixing compression seal filler 13 on the rifle body 1, pay so pin plug 10 and airtight and watertight padding 13 constitute movable sealings.Governor motion at the above comprises stroke adjustment screw 19 and jump ring, and by being threaded, an end of stroke adjustment screw 19 passes pin plug spring base 18 and stretches in the pilot hole 21, is provided with jump ring in this end between stroke adjustment screw 19 and the pin plug spring base 18.The stroke adjustment screw 19 of this structure is not subjected to the pressure effect of pin plug spring 16, thereby easy and flexible and difficult drop-off are regulated in rotation.

As shown in Figure 1, this polyurethane foam rifle will be equipped with polyurethane or similar polyurethane material when using pressurized tank screws in the charging joint chair 4, and blowing agent backs down check valve under pressure in the batch can, and enters in gun barrel 9 chambeies.When cocking 15, pin plug 10 moves certain stroke backward, and the feed nozzle sealing gasket 12 of feed nozzle separates with the pin plug 10 head conical surfaces, and promptly feed nozzle is opened, and at this moment blowing agent ejects under pressure automatically.When trigger 15 resetted, pin plug 10 resetted under the 16 pressure effects of pin plug spring, and the pin plug 10 head conical surfaces contact with feed nozzle sealing gasket 12 and form sealing again, promptly stop blowing agent injection.Unload the polyurethane pressurized tank when finishing using, the spool 5 of check valve resets under spring 6 pressure effects again, its spherical contacts and seals with the taper surface 4b of feeding-passage 4a, has effectively avoided outside air to enter in the chamber and causes that blowing agent solidifies and result in blockage and lost efficacy.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used rifle body 1 morely; Pikestaff 2; Set bolt 3; Charging joint chair 4; Feeding-passage 4a; Taper surface 4b; Spool 5; Spring 6; Spring base 7; Connect sealing gasket 8; Gun barrel 9; Pin plug 10; Feed nozzle body 11; Taper seat 11a; Feed nozzle sealing gasket 12; Airtight and watertight padding 13; Sealed screw 14; Trigger 15; Pin plug spring 16; Lead 17; Pin plug spring base 18; Stroke adjustment screw 19; Passage 20; Pilot hole 21 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1, a kind of polyurethane foam rifle, comprise rifle body (1) and be connected in gun barrel (9) and inlet valve parts on the rifle body (1), the front end of gun barrel (9) is provided with feed nozzle, being provided with in gun barrel (9) can be along gun barrel (9) pin plug (10) in axial sliding, the front end feed nozzle of pin plug (10) forms sealing, the rear end penetrates rifle body (1) and is fixed with lead (17), at the front end of lead (17) against the trigger (15) that is hinged on the rifle body (1) is arranged, it is characterized in that, be fixed with pin plug spring base (18) on the described rifle body (1), between lead (17) and pin plug spring base (18), be provided with the pin plug spring (16) that pin plug (10) is resetted, the two ends of pin plug spring (16) are resisted against respectively on lead (17) and the pin plug spring base (18), are provided with at pin plug spring base (18) and can regulate the governor motion that control pin plug (10) forms.

2, polyurethane foam rifle according to claim 1 is characterized in that, described governor motion is for being arranged on the pin plug spring base (18) and stroke adjustment screw (19) the energy axially-movable.

3, polyurethane foam rifle according to claim 2 is characterized in that, between described stroke adjustment screw (19) and the pin plug spring base (18) by being threaded.

4, polyurethane foam rifle according to claim 2 is characterized in that, the end of described stroke adjustment screw (19) is passed pin plug spring base (18) and is provided with jump ring in the end.

5, polyurethane foam rifle according to claim 1, it is characterized in that, described inlet valve parts comprise that being fixed on rifle body (1) goes up charging joint chair (4), has feeding-passage (4a) on the charging joint chair (4), on feeding-passage (4a), has taper surface (4b), in feeding-passage (4a), be provided with spring base (7), spring (6), spool (5), spring (6) one ends act on the spring base (7), the other end acts on the spool (5), under the single effect of spring (6), spool (5) and taper surface (4b) form sealing.

6, polyurethane foam rifle according to claim 5 is characterized in that, described spool (5) is hemispherical.

According to claim 5 or 6 described polyurethane foam rifles, it is characterized in that 7, described spool (5) adopts elastomeric material to make.

8, polyurethane foam rifle according to claim 5 is characterized in that, is provided with between described charging joint chair (4) and the rifle body (1) to connect sealing gasket (8).

9, polyurethane foam rifle according to claim 1, it is characterized in that, described feed nozzle comprises feed nozzle body (11) and is arranged on feed nozzle sealing gasket (12) in the feed nozzle body (11), and the head of described pin plug (10) is tapered and form sealing in feed nozzle sealing gasket (12).

10, polyurethane foam rifle according to claim 1, it is characterized in that described pin plug (10) is provided with airtight and watertight padding (13) and is fixed on the sealed screw (14) that is used for fixing airtight and watertight padding (13) on the rifle body (1) with the rifle body (1) at rifle body (1) place of linking.