CN110732425A - kinds of foaming gun - Google Patents

Abstract

A foaming gun comprises a gun body, a gun barrel arranged at the front end of the gun body, and a gun handle arranged below the rear end of the gun body, the gun body is provided with a trigger matching the gun handle, and the front end of the gun barrel is provided with a gun nozzle , the gun barrel is provided with an ejector rod that matches the gun mouth, a connecting head is arranged above the gun body, the connecting head is connected with a foaming tank, and the connecting head is connected with a number of claw joints; the center of the lower surface of the claw joint is provided with a The threaded portion of the connecting head is matched; a groove is arranged in the middle part of the upper surface of the claw joint, and an adapter tube which is communicated with the threaded portion is arranged at the bottom of the groove. The foaming gun of the present invention can realize the quick connection when it is connected with the foaming tank, even if at least two foaming tanks are connected at the same time, the connection efficiency can also be guaranteed, and the foaming gun can be completely disassembled. The solidified foaming material remaining in the gun body can be quickly cleaned, and the large-scale spraying of the foaming gun can be realized.

Description

a foam gun

technical field

The present invention relates to a foaming gun.

Background technique

Foaming guns are widely used in the decoration industry by spraying foaming materials to achieve the functions of installation, caulking, leak repair and bonding. The foaming material is filled in the foaming material tank. When the foaming material tank is installed on the foaming gun, the foaming gun can spray the foaming material through the trigger on the gun body.

The traditional foaming gun and the foaming tank are fixed by threaded connection. In order to ensure the stability, the foaming tank needs to be rotated many times when the connection head of the foaming gun is threadedly connected. It is extremely troublesome, seriously affects the disassembly and assembly efficiency of the foaming tank, and is not conducive to the replacement of the foaming tank. Sometimes the foaming gun is not connected to only one foaming tank. When the foaming gun needs to connect two or more foaming tanks When the tank is used, the foaming gun will connect at least two or more foaming tanks through a multi-head hose. At this time, if the threaded connection is still used, the hose heads that are screwed by the multi-head hose will be restricted by each other. In the case of twisting and deformation, it is easy to cause the internal pipeline of the hose to be blocked, and the foaming material in the foaming tank cannot smoothly enter the foaming gun through the multi-headed hose, which affects the normal use of the foaming gun.

When the foaming gun is used, the foaming material will inevitably pass through the feed cavity and the barrel of the gun body with the air valve installed, and every time the foaming material is sprayed out, it is inevitable that some of the foaming material will remain in the feeding cavity and the barrel. In the gun barrel, in the long run, it is easy to cause the residual foaming material to solidify and cause the spraying channel to be blocked. In this case, because the gun body is a closed structure, the foaming gun can only be completely removed to prevent the feeding cavity and The foaming material in the barrel is cleaned, this cleaning method is extremely troublesome and the cleaning efficiency is extremely low.

The nozzle of the traditional foaming gun is a round strip-shaped spray hole. The shape of the foaming material sprayed by this nozzle is also strip-shaped, and the coverage area that the strip-shaped foaming material can form is extremely limited. For the spraying work of the area, using this nozzle will consume a lot of time, and the spraying efficiency is extremely low.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a foaming gun, which can realize the quick connection when connecting itself with the foaming tank. Even if at least two foaming tanks are connected at the same time, the connection efficiency can also be ensured, and no When the foaming gun is completely disassembled, the solidified foaming material remaining in the gun body can be quickly cleaned, and the large-scale spraying of the foaming gun can be realized.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is:

The invention discloses a foaming gun, comprising a gun body, a gun barrel arranged at the front end of the gun body, and a gun handle arranged below the rear end of the gun body. There is a gun mouth, the barrel is provided with an ejector rod that matches the gun mouth, a connecting head is arranged above the gun body, and the connecting head is connected with a foaming tank, which is characterized in that: the connecting head is connected with a number of claw joints; The center of the lower surface of the joint is provided with a threaded portion that matches the connecting head; the middle of the upper surface of the claw joint is provided with a groove, and the bottom of the groove is provided with an adapter tube that communicates with the threaded portion; the edge of the upper surface of the claw joint There are several clamping claws evenly distributed around the circumference; a clamping groove is formed between the clamping claws and the upper surface of the claw joint, and there is a clamping gap connected with the clamping groove between the adjacent clamping claws; the foaming tank The lower end is provided with a mounting head that matches the groove; the outer peripheral surface of the mounting head is provided with a number of rotating card plates corresponding to the number of claws, the width of the rotating card plate is smaller than the width of the clamping gap, and the thickness of the rotating card plate The height of the slot is smaller than the slot height of the card slot; the center of the lower surface of the mounting head is provided with a butt hole matching with the adapter tube.

A number of evenly distributed cleaning windows are arranged on the outer wall of one side of the barrel; the cleaning window is covered with a matching window cover, and the window cover is fixed on the barrel by tightening screws; the gun body is provided with The feeding cavity communicated with the connecting head, and the outer wall of one side of the gun body is provided with a cleaning hole communicated with the feeding cavity; the cleaning hole is screwed with a sealing screw.

The side wall of the window cover opposite to the cleaning window is provided with a sealing groove; the sealing groove is provided with a matching sealing ring.

The opening of the lower end of the cleaning hole is provided with a clamping step, and the head of the sealing screw is clamped on the clamping step; a sealing gasket is arranged between the head of the sealing screw and the clamping step.

The front end of the gun nozzle is provided with a spray head; the front end face of the spray head is provided with a flat opening or a flat expansion port, and the cross section of the flat expansion port is in the shape of a triangle with a wide front and a narrow back.

The connecting head is screwed with a first screw joint, and the first screw joint is connected with a first hose; the end of the first hose is connected with a quick joint; the quick joint is provided with a main interface and at least two or more The main interface is connected with the first hose, and the sub-port is connected with a second hose; the end of the second hose is connected with a second screw joint, and the claw joint is screwed with the second screw joint through the threaded part catch.

The upper surface of the claw joint and the outer wall of the clamping claw are transitionally connected through an arc-shaped guide surface.

The beneficial effects of the present invention are:

Compared with the prior art, the foaming gun using the structure of the present invention only needs to move the rotating card plate down to the position flush with the slot of the card slot through the card-in gap, and then rotate the rotating card plate to a position in line with the card-in gap. In the through slot, the fixing between the foaming gun and the foaming tank can be realized. This kind of rotation action is very small and can be completed quickly with just one click. The connection efficiency is much higher than that of the threaded connection, which requires many rotations to complete the fastening. Therefore, the quick connection between the foaming gun and the foaming tank can be realized. Since the connection between the claw joint and the rotating card plate can be completed only by rotating a small angle, the foaming cavity is connected to multiple foaming tanks. When connecting, the twisting and deformation angle of the hose is limited, which will not affect the conveying of the foam material by the hose, and effectively avoid the situation that the internal blockage cannot flow due to excessive twisting and deformation of the hose.

Compared with the prior art, the foaming gun using the structure of the present invention can directly clean the solidified foaming material remaining in the gun barrel through the cleaning window, and can also directly clean the solidified foaming material remaining in the feeding cavity through the cleaning hole. It can effectively avoid the need to completely disassemble the foaming gun to clean the inside of the barrel and the feeding cavity. When the residual solidified foaming material is cleaned, the window cover can be closed on the cleaning window The inner space of the barrel is turned into a closed space again, and then the sealing screw is fastened in the cleaning hole to turn the feeding cavity into a closed space again, and the existence of the sealing ring and the sealing gasket can ensure the barrel and the feeding cavity respectively. The tightness of the material cavity can avoid the leakage of foaming material during spraying.

Compared with the prior art, the foaming gun adopting the structure of the present invention can shape and disperse the sprayed foaming material through the flat opening and the flat expansion port, so that the spraying shape changes from a strip shape to a fan shape with a wide front and a narrow back. Flat shape, so as to increase the spraying range and effectively improve the spraying efficiency.

Description of drawings

Fig. 1 is the structural representation of foaming gun of the present invention;

Fig. 2 is the structural representation when the foaming gun is connected with two claw joints;

Fig. 3 is the structural representation of one angle of the claw joint;

Figure 4 is a schematic structural diagram of another angle of the claw joint;

Fig. 5 is the structural representation when foaming gun is provided with cleaning window;

Fig. 6 is an enlarged view of A part of Fig. 5;

Fig. 7 is the structural representation that the window cover can only cover one cleaning window;

Figure 8 is a schematic structural diagram of a window cover capable of covering two cleaning windows at the same time;

9 is a schematic structural diagram when the front end of the sprinkler is provided with a flat opening;

FIG. 10 is a schematic structural diagram when a flat expansion port is provided at the front end of the sprinkler head.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

Please refer to FIGS. 1 to 10 , the present invention provides a foaming gun, comprising a gun body 1 , a gun barrel 2 arranged at the front end of the gun body 1 , and a gun handle 3 arranged below the rear end of the gun body 1 . There is a trigger 4 that matches the handle 3, the front end of the barrel 2 is provided with a muzzle 5, the barrel 2 is provided with a mandrel 6 that matches the muzzle 5, and the top of the gun body 1 is provided with a connector 7 to connect The head 7 is connected with a foaming tank 8, and the connecting head 7 is connected with a number of claw joints 9; the center of the lower surface of the claw joint 9 is provided with a threaded part 10 that matches the connecting head 7; the middle part of the upper surface of the claw joint 9 There is a groove 11, and the bottom of the groove 11 is provided with an adapter tube 12 that communicates with the threaded portion 10; the upper surface edge of the claw joint 9 is provided with a number of claws 13 evenly distributed around the circumference; the claws 13 A clamping groove 14 is formed between the upper surface of the claw joint 9 and the adjacent clamping claws 13 have a clamping gap 15 that communicates with the clamping groove 14; the lower end of the foaming tank 8 is provided with a matching groove 11. The mounting head 16; the outer peripheral surface of the mounting head 16 is provided with a number of rotating clamping plates 17 corresponding to the number of 13 claws, the width of the rotating clamping plate 17 is smaller than the width of the clamping gap 15, and the thickness of the rotating clamping plate 17 is less than The slot height of the card slot 14 is high; the center of the lower surface of the mounting head 16 is provided with a docking hole 18 matching the adapter tube 12 .

The outer wall of one side of the barrel 2 is provided with a number of evenly distributed cleaning windows 19; the cleaning window 19 is covered with a matching window cover 20, and the window cover 20 is fixed on the barrel 2 by tightening screws 21. The gun body 1 is provided with a feeding cavity 22 that communicates with the connecting head 7, and the outer wall of one side of the gun body 1 is provided with a cleaning hole 23 that communicates with the feeding cavity 22; the cleaning hole 23 is screwed with a seal Screw 24.

The side wall of the window cover 20 opposite to the cleaning window 19 is provided with a sealing groove 25; the sealing groove 25 is provided with a matching sealing ring 26 therein.

The opening of the lower end of the cleaning hole 23 is provided with a clamping step 27, and the head of the sealing screw 24 is clamped on the clamping step 27; a sealing gasket 28 is arranged between the head of the sealing screw 24 and the clamping step 27. .

The front end of the gun nozzle 5 is provided with a spray head 29; the front end face of the spray head 29 is provided with a flat opening 30 or a flat expansion port 31, and the cross section of the flat expansion port 31 is a triangular shape with a wide front and a narrow back.

The connecting head 7 is screwed with a first screw joint 32, and the first screw joint 32 is connected with a first hose 33; the end of the first hose 33 is connected with a quick joint 34; the quick joint 34 is provided with a The main interface 35 and at least two or more branch interfaces 36, the main interface 35 is connected with the first hose 33, and the branch interface 36 is connected with a second hose 37; the end of the second hose 37 is connected with a second screw. The joint 38 and the claw joint 9 are screwed with the second threaded joint 38 through the threaded portion 10 .

An arc-shaped guide surface 39 is transitionally connected between the upper surface of the claw joint 9 and the outer wall of the clamping claw 13 .

The using method of the present invention is as follows:

When the foaming tank is to be connected with the foaming gun, hold the foaming tank and align the rotating clamping plate 17 on the mounting head of the foaming tank with the position of the clamping gap 15 of the claw joint 9, and then move it down to make the rotation The card plate 17 enters into the locking gap 15 and moves down to a position flush with the notch of the card slot 14. Then, the rotating card plate 17 can be rotated with the adapter tube 12 as the center, so that the rotating card plate 17 can pass through the card. The slot of the slot 14 is rotated until it enters the slot 14. When the rotating clip 17 enters the slot 14, the slot 14 will limit the position of the rotating clip 17, thereby restricting the position of the mounting head 16 of the foaming tank. To limit, realize the tight connection between the foaming gun and the foaming tube. It can be seen from this that it is only necessary to move the rotating clamping plate 17 down through the clamping gap 15 to a position flush with the notch of the clamping groove 14, and then The rotating clamping plate 17 is rotated into the clamping slot 14 which communicates with the clamping gap 15, so that the fixing between the foaming gun and the foaming tank can be realized. Much more efficient than a threaded connection requiring many turns to fasten, enabling a quick connection between the foaming gun and the foaming tank.

When the connection between the foaming gun and the foaming tank is completed, the adapter tube 12 has been inserted into the docking hole 18 of the mounting head 16, and the docking between the adapter tube 12 and the docking hole 18 is completed. An ordinary air valve will be installed in the adapter tube 12. When the docking hole 18 is docked with the adapter tube 12, the thimble in the docking hole 18 will push the air valve open. At this time, the foaming material in the foaming tank will be opened. It can enter into the feeding cavity 22 of the gun body through the adapter tube 12 and the threaded part 10. When spraying is required, just press the trigger 4, and then the ejector rod 6 can be controlled to open the nozzle 5 to realize spraying.

When the staff needs to clean the solidified foam material remaining in the barrel 2, the window cover 20 can be removed from the cleaning window 19 only by unscrewing the fastening screw 21. When the cleaning window 19 is exposed, The staff can directly clean the interior of the barrel 2 through the cleaning window 19 without completely disassembling the barrel 2 from the gun body for cleaning. The cover 20 can be fixed on the barrel 2, and the existence of the sealing ring 26 can effectively improve the sealing between the window cover 20 and the cleaning window 19, and effectively prevent the foam material entering the barrel 2 from leaking through the cleaning window 19. Case.

When the staff needs to clean the solidified foaming material remaining in the feeding cavity 22, the sealing screw 24 can be unscrewed from the cleaning hole. To clean the feed cavity 22, there is no need to disassemble other components installed on the gun body 1, which reduces the trouble of cleaning. After the feed cavity 22 is cleaned, tighten the sealing screw 24 in the cleaning hole 23. Yes, and the existence of the sealing gasket 28 can effectively improve the sealing between the head of the sealing screw 24 and the clamping step 27, thereby ensuring the sealing of the cleaning hole 23, and effectively preventing the foaming material of the feeding cavity 22 from passing through the cleaning hole. 23 Leaks occurred.

When the front end face of the spraying head 29 is provided with a flat opening, once the foaming material is sprayed from the spraying head 29, the foaming material will first pass through the flat opening, and the flat opening 30 will compress the foaming material, transforming from a strip to a flat opening. The compressed flat shape, because the flat opening 30 is not only open at the front end, but also open on both sides, so the foamed material passing through the flat opening 30 will be spread out, changing from a flat shape to a fan-shaped flat shape with a wide front and a narrow back, so as to realize the development of the flat shape. The spraying range of the foam material is increased; when the front end face of the spray head 29 is provided with a flat expansion port 31, the foam material ejected from the spray head 29 will spread out along the trajectory of the flat expansion port 31, and the flat expansion port 31 will spread out. The cross section of the expansion port 31 is in the shape of a triangle with a wide front and a narrow back. The front orifice and both sides of the flat expansion port 31 are open. Therefore, the foam material that finally passes through the flat expansion port 31 will change from a strip shape to a fan-shaped flat shape. , and the fan-shaped angle formed by the flat opening 30 is larger than the fan-shaped angle formed by the flat expansion port 31. The staff can select the corresponding sprinkler head 29 according to the actual needs, and the flat opening 30 or the flat expansion port 31 can be used. Enlarging the spraying range of the foaming material, effectively improving the spraying efficiency, but the spray head 29 and the gun nozzle are not an integral structure, which means that the spray head 29 has a step stuck at the position of the nozzle 5 of the gun nozzle, and then use the gun nozzle 5. The screw connection with the front end of the gun barrel 2 will clamp the step at the mouth of the gun nozzle 5, so as to realize the fixation between the gun nozzle 5 and the spray head 29. Therefore, only the gun nozzle 5 can be loosened, and the spray head 29 can be fixed. Rotation is performed to change the angle of the flat opening and the flat expansion port. It is not necessary to change the angle of the flat opening and the flat expansion port by changing the angle of the entire gun body, which is conducive to the spraying work.

The connecting head 7 is screwed with a first screw joint 32, the first screw joint 32 is connected with a first hose 33, the end of the first hose 33 is connected with a quick connector 34, and the quick connector 34 is provided with a main interface 35 and at least two There are more than one sub-port 36, the main port 35 is connected with the first hose 33, the sub-port 36 is connected with a second hose 37, the end of the second hose 37 is connected with a second threaded joint 38, and the claw joint 9 is threaded The part 10 is screwed with the second screw joint 38. When multiple claw joints 9 need to be connected with the mounting heads 16 on multiple foaming tanks, it is only necessary to snap the rotary card plate 17 into the slot on the claw joint 9. That is to say, since the connection between the claw joint 9 and the rotating card plate 17 can be completed only by rotating a small angle, the second hose 37 connected with the claw joint 9 will only be twisted in a very small extent, not only It will not affect the connection efficiency between the claw joint 9 and the mounting head of the foaming tank, and the twisting and deformation angle of the hose is limited, which will not affect the transportation of the foaming material by the second hose 37, effectively avoiding the 37 Excessive distortion caused the internal blockage to prevent circulation.

The upper surface of the claw joint 9 and the outer wall of the claw 13 are transitionally connected by an arc-shaped guide surface 39. The existence of the guide surface 39 can further improve the efficiency of the rotating card plate 17 being stuck into the card slot 14. When entering the clamping gap 15, it is not necessary to be completely aligned. If the rotating clamping plate 17 collides with the guide surface because it is not aligned with the clamping gap 15, the guiding surface 39 will quickly move the rotating clamping plate 17 through its smooth arc surface. The slot position of the introduced card slot will not cause the jamming action to be blocked, which effectively improves the efficiency when the rotating card plate 17 is engaged with the card claw 13 .

Claims (7)

1. The foaming gun comprises a gun body, a gun barrel arranged at the front end of the gun body and a gun handle arranged below the tail end of the gun body, wherein a trigger matched with the gun handle is arranged on the gun body, a gun nozzle is arranged at the front end of the gun barrel, a push rod matched with the gun nozzle is arranged in the gun barrel, a connector is arranged above the gun body and connected with a foaming tank, the foaming gun is characterized in that a plurality of claw joints are connected with the connector, threaded parts matched with the connector are arranged in the centers of the lower surfaces of the claw joints, grooves are formed in the middles of the upper surfaces of the claw joints, adapting pipes communicated with the threaded parts are arranged at the bottoms of the grooves, a plurality of clamping jaws uniformly distributed in the circumference are arranged on the edges of the upper surfaces of the claw joints, clamping grooves are formed between the clamping jaws and the upper surfaces of the claw joints, clamping gaps communicated with the clamping grooves are formed between adjacent clamping jaws, matched with the grooves are arranged at the lower end of the foaming tank, a plurality of rotating clamping plates corresponding to the number are arranged on the outer circumferential surface of the mounting.
2. 2. The kinds of foam guns as claimed in claim 1, wherein the barrel has a plurality of cleaning windows uniformly distributed on its outer wall, the cleaning windows are covered with a window cover matching with the cleaning windows, the window cover is fixed on the barrel by fastening screws, the gun body has a feeding cavity communicated with the connector, the outer wall of the gun body has a cleaning hole communicated with the feeding cavity, and the cleaning hole is screwed with a sealing screw.
3. 3. The foam gun as claimed in claim 2, wherein sealing groove is provided on the side wall of the window cover opposite to the cleaning window, and a sealing ring matching with the sealing groove is provided in the sealing groove.
4. 4. The kinds of foam guns as claimed in claim 2, wherein the lower opening of the cleaning hole has retaining steps, the head of the sealing screw is retained on the retaining steps, and sealing gasket is disposed between the head of the sealing screw and the retaining steps.
5. 5. The kinds of foaming gun as claimed in claim 1, wherein the front end of the nozzle is provided with a spray head, the front end face of the spray head is provided with flat openings or flat enlarged openings, and the cross section of the flat enlarged openings is triangular with a wide front and a narrow back.
6. 6. The foam gun according to claim 1, wherein the connector is screwed with a screw joint, a hose is connected with a screw joint, the end of the hose is connected with a quick joint, the quick joint is provided with a main joint and at least two sub-joints, the main joint is connected with the hose, the sub-joints are connected with a second hose, the end of the second hose is connected with a second screw joint, and the claw joint is screwed with the second screw joint through a screw thread.
7. 7. The kinds of foaming gun as claimed in claim 1, wherein the transition connection between the upper surface of the jaw joint and the outer wall of the jaw is formed by arc-shaped guide surfaces.

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