CN215964247U

CN215964247U - Foaming gun foaming tank opening and closing device

Info

Publication number: CN215964247U
Application number: CN202122416807.1U
Authority: CN
Inventors: 梁海军
Original assignee: Zhejiang Chaoyu Tools Co ltd
Current assignee: Zhejiang Chaoyu Tools Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-03-08
Anticipated expiration: 2031-10-08

Abstract

The utility model discloses a foaming gun foaming tank opening and closing device which comprises a mounting rack, wherein a connecting structure used for being connected with a foaming tank is arranged on the mounting rack. The valve core and the valve mouth are coaxially arranged in the mounting frame, the valve mouth is sleeved on the valve core, liquid seal is formed between the valve mouth and the valve core, the upper end of the valve mouth is provided with a bearing opening used for being matched with a nozzle on a foaming tank, and a liquid flow channel penetrates through the valve core and the valve mouth and is communicated with the bearing opening. Reverse internal threads are reversely arranged on the inner circumferential surface of the valve nozzle, external threads which are matched and connected with the reverse internal threads are arranged on the outer circumferential surface of the valve core, the mounting frame and the valve nozzle are connected in a circumferential transmission and axial sliding mode, the mounting frame is rotated to enable the valve nozzle to move axially, and then the foaming tank is opened or closed. The valve nozzle can be driven to move axially through the mounting frame, so that the foaming tank on the foaming gun can be opened or closed, the operation is simple and convenient, and the use requirement of the foaming gun can be well met.

Description

Foaming gun foaming tank opening and closing device

Technical Field

The utility model relates to a foaming gun, in particular to a device for opening or closing a foaming tank on the foaming gun.

Background

Foaming agents are frequently used in building decoration, the foaming agents are mainly used for coating gaps between plates or other structures, and the foaming agents accumulated in the gaps can be blocked at the gaps after being expanded and solidified so as to realize the sealing of the gaps. The foaming agent is generally applied by means of a foaming gun. The foaming gun mainly comprises a gun body and a gun barrel, a needle rod is arranged in the gun barrel, a liquid through cavity is formed in the gun body, an adapter is used for being connected with a foaming tank, a connecting cylinder which is connected into a whole is arranged in the adapter, a through channel is arranged at the axis position of the connecting cylinder, and foaming agent sprayed out of a nozzle of the foaming tank can enter the liquid through cavity in the gun body through the channel. When the foaming gun is used, the foaming tank is required to be installed on the adapter, and after the foaming tank is installed in place, the nozzle on the foaming tank can be pressed on the upper end of the connecting cylinder, so that the foaming tank is continuously opened.

Chinese patent document (publication No. CN 201711246U) discloses a foaming gun adapter, which comprises an adapter body, a sealing ball and a conical spring, wherein the adapter body is provided with an inner cavity, a copper insert is screwed into the inner cavity, a bushing is arranged in the copper insert, the upper end surface of the copper insert abuts against the top end surface of the inner cavity, the copper insert is provided with a liquid inlet hole and a flow channel, the sealing ball is arranged in the copper insert, a sealing gasket is arranged between the sealing ball and the inner end surface of the copper insert, one end of the conical spring pushes against the lower end of the sealing ball, the other end of the conical spring pushes against a pressing sleeve fixed on the copper insert, the pressing sleeve is internally provided with a hollow flow channel, the upper end of the pressing sleeve is provided with protruding conical gluten striding over the sealing ball, a fan-shaped opening is arranged between the conical gluten, the pressing sleeve flow channel is communicated with the flow channel of the copper insert through the fan-shaped opening, and the conical top of the pre-tightening spring are positioned on the same straight line. The utility model limits the maximum compression amount of the conical spring, avoids the conical spring from being tightly blocked, replaces metal parts with an injection molding part combined structure, reduces the processing procedures and the rejection rate of parts, and shortens the production period of products.

A similar copper insert is also provided in this adapter, and the foam cylinder is also in a long open position after the foam cylinder is fitted to the adapter, which makes the use of the foam gun cumbersome.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: the utility model provides a foaming gun foaming tank headstock gear, and make and to realize independently controlling foaming tank's on the foaming gun opening and close to make things convenient for the use of foaming gun.

The technical measures adopted for solving the technical problems are as follows: a foaming gun foaming tank opening and closing device comprises a mounting frame, wherein the mounting frame is provided with a connecting structure for connecting with a foaming tank, and the foaming gun foaming tank opening and closing device is characterized in that a valve core and a valve nozzle are coaxially arranged in the mounting frame, the valve nozzle is sleeved on the valve core, liquid is sealed between the valve nozzle and the valve core, the upper end of the valve nozzle is provided with a socket for matching with a nozzle on the foaming tank, and a liquid flow channel penetrates through the valve core and the valve nozzle and is communicated with the socket;

reverse internal threads are reversely arranged on the inner circumferential surface of the valve nozzle, external threads which are matched and connected with the reverse internal threads are arranged on the outer circumferential surface of the valve core, the mounting frame and the valve nozzle are connected in a circumferential transmission and axial sliding mode, the mounting frame is rotated to enable the valve nozzle to move axially, and then the foaming tank is opened or closed.

The connecting structure can be a positive internal thread arranged in the positive direction, correspondingly, an external thread matched and connected with the positive internal thread is arranged on the outer peripheral surface of the end part of the foaming tank, and the foaming tank and the mounting frame are connected and fixed through the thread connection. The positive internal thread refers to a common thread arrangement direction. The reverse direction is taken as a reference, and the screw directions of the threads corresponding to the forward direction and the reverse direction are opposite. The connecting structure can also be a clamping structure, and the foaming tank and the mounting rack are clamped mutually to realize connection and fixation. When the assembly is realized, the valve core is connected and fixed on the gun body, and the valve core is used for realizing the circumferential rotation and axial limiting connection of the mounting frame. The mounting frame rotates on the valve core to drive the valve nozzle to rotate on the valve core, the valve nozzle can move in the axial direction of the valve core, the valve nozzle can upwards jack the nozzle on the foaming tank, the valve nozzle downwards breaks away from the nozzle, and the foaming tank cannot discharge liquid and is naturally closed.

Furthermore, a blocking structure is arranged in the liquid flow channel between the valve nozzle and the valve core, and the valve nozzle moving axially on the valve core enables the blocking structure to be opened to conduct the liquid flow channel or enables the blocking structure to be closed to block the liquid flow channel. The blocking structure is usually a mechanical seal, and axial movement of the valve nozzle causes the blocking structure to open or close. Before the foam tank is removed, the closing of the blocking structure is usually realized by rotating the mounting frame so as to prevent the foaming agent remained in the gun tube from flowing back to the outside from the adapter.

Furthermore, a through hole is arranged in the valve core along the axial direction of the valve core, the through hole forms a part of the liquid flow channel, a blocking block is integrally formed at one end part of the valve core inserted in the valve nozzle, a spigot is arranged at the position of the liquid flow channel in the valve core, and the blocking block and the spigot form the blocking structure. The plugging structure is simple, convenient to arrange and capable of being well adapted to the axial movement of the valve nozzle.

Furthermore, the through hole is positioned at the axis position of the valve core, the blocking block is positioned at the through hole position, and two sides of the root part of the blocking block are respectively provided with a through hole communicated with the through hole. This makes it convenient to realize the stable cooperation between jam piece and the tang, simple structure.

Further, a cylindrical sleeve portion is arranged at the lower position of the mounting frame and sleeved on the valve nozzle. The sleeve joint part is arranged, so that the installation frame and the valve nozzle are conveniently connected, the structure is compact, and the installation is convenient.

Furthermore, prism clearance fit hookup between cup joint portion and the valve mouth. The valve nozzle is provided with a regular prism hole in the sleeving part, the part matched with the sleeving part on the valve nozzle is a regular prism, and after the valve nozzle and the sleeving part are matched in a sleeving way, transmission is conveniently achieved, and the valve nozzle can smoothly achieve axial movement.

Further, the mounting bracket is of a revolving body structure and further comprises an intermediate portion and a mounting portion, the outer diameter of the intermediate portion is larger than that of the sleeving portion, the outer diameter of the mounting portion is larger than that of the intermediate portion, and the intermediate portion is located between the mounting portion and the sleeving portion in the axial direction. This makes the holistic outer peripheral face of mounting bracket be the stairstepping structure to be convenient for holding of hand, when installing the foam tank on the mounting bracket, simple to operate is swift.

Further, the mounting bracket is of a revolving body structure and further comprises an intermediate portion and a mounting portion, the outer diameter of the intermediate portion is larger than that of the sleeving portion, the outer diameter of the mounting portion is larger than that of the intermediate portion, the intermediate portion is located between the mounting portion and the sleeving portion in the axial direction, and the positive internal threads are arranged on the inner circumferential surface of the mounting portion.

Furthermore, an inward convex ring is integrally formed on the inner peripheral surface of the outer end of the sleeving part, an outward pressing ring is integrally formed on the outer peripheral surface of the middle position of the valve core, and the outward pressing ring is pressed and connected to the outer side of the inward convex ring. Through outside clamping ring and the crimping cooperation between the inside bulge loop to can realize well that the stability of mount frame on the rifle body is good spacing to the axial of mounting bracket.

The utility model has the following beneficial effects:

1. through case and the valve mouth that sets up split type structure, and be provided with the reverse screw thread of complex between case and the valve mouth, the drive of accessible mounting bracket realizes the valve mouth at case ascending motion of axial to can promote the nozzle through the valve mouth as required, realize supplying liquid, also can make valve mouth and nozzle throw off mutually, and make the foaming jar close. Therefore, whether the foaming tank discharges liquid or not can be manually controlled, and the requirement of the foaming gun in the actual use process can be well met.

2. Because the matched reverse threads are reversely arranged, the plugging structure can be arranged in the liquid flow channel, so that the operation of the plugging structure can be suitable for the assembling and disassembling modes of the foaming tank, particularly when the foaming tank is disassembled, the plugging structure can be ensured to be in a closed state, the backflow of foaming agents in the gun tube can be effectively prevented, and the foaming gun can be kept clean in the using process.

Drawings

Fig. 1 is a block diagram of a mounting bracket mounted on a foam gun.

Fig. 2 is an assembled longitudinal sectional view of the adapter.

Fig. 3 is a longitudinal sectional view of the valve nozzle.

Fig. 4 is a longitudinal sectional view of the valve cartridge.

Fig. 5 is a longitudinal sectional view of the mounting bracket.

In the figure, 1, a gun barrel; 2. a gun body; 3. a mounting frame; 31. an installation part; 32. an intermediate portion; 33. a socket joint part; 34. an inward convex ring; 4. a needle bar; 5. an adjustment mechanism; 6. a grip; 7. a valve nozzle; 71. a socket; 72. stopping the opening; 8. a valve core; 81. outward pressing a ring; 82. penetrating through the mouth; 83. a plugging block; 84. through holes; 9. a seal ring; 10. and a clamp spring.

Detailed Description

The foaming gun foaming tank opening and closing device is arranged in an adapter, the adapter is assembled on a foaming gun, and the adapter is used for mounting a foaming tank with a foaming agent stored therein. Referring to fig. 1, the foaming gun structurally comprises a gun body 2, a liquid through cavity is arranged in the gun body 2, a gun barrel 1 is connected to the front side of the gun body 2, the gun barrel 1 is communicated with the inside of the liquid through cavity, a handle 6 is arranged on the rear side of the gun body 2, the inner end of a needle rod 4 extends into the gun barrel 1, and the outer end of the needle rod 4 is connected with a flow regulating mechanism 5 on the gun body 2.

The main structure of the adapter comprises a mounting frame 3, and the mounting frame 3 is connected to the gun body 2 in a circumferential rotation and axial limiting manner. The upper end side of the mounting frame 3 is positively provided with a positive internal thread, the outer end part of the foaming tank is provided with a connecting head, the connecting head is provided with an external thread which is matched and connected with the positive internal thread, and the foaming tank is connected and fixed on the mounting frame 3 through thread connection. The structure of the opening and closing device comprises a valve core 8, a threaded hole in the gun body 2, which is in threaded connection with the valve core 8, is communicated with a liquid through cavity in the gun body 2, and the valve core 8 is of a hollow structure. The valve core 8 is sleeved with a hollow valve nozzle 7, and liquid sealing is realized between the valve nozzle 7 and the valve core 8 through at least two sealing rings 9. A socket 71 is provided in the upper end of the valve nozzle 7, and a bottom ring is formed in the socket 71. After the foaming tank is screwed on the mounting frame 3, the nozzle on the foaming tank is inserted in the socket 71, the bottom ring is used for supporting the outer end part of the nozzle, and after the bottom ring presses the nozzle, the foaming tank is opened, and the foaming agent flows out of the nozzle in a liquid form.

The valve nozzle 7 is movably arranged in the mounting frame 3, that is, the valve nozzle 7 can axially move in the mounting frame 3, and the axial movement of the valve nozzle 7 is realized by the mounting frame 3 through the reversely arranged thread matching connection. The valve core 8, the valve nozzle 7 and the mounting frame 3 are coaxially arranged, a liquid flow channel is formed inside the hollow valve core 8 and the valve nozzle 7, the liquid flow channel is communicated with the faucet 71 and a liquid through cavity, and foaming agents enter the liquid through cavity in the gun body 2 from the faucet 71. A blocking structure is arranged in the liquid flow channel and is arranged between the valve nozzle 7 and the valve core 8. As a result of the axial movement of the valve mouth 7, the closure structure is closed to close the flow channel or opened to open the flow channel.

The valve element 8 is provided with a through hole 84 along its axial direction, the through hole 84 penetrating the valve element 8 in the axial direction of the valve element 8, the through hole 84 constituting a part of the flow passage. A blocking block 83 is integrally formed at one end of the valve element 8 inserted into the valve nozzle 7, that is, at the upper end of the valve element 8, and the blocking block 83 protrudes to the outside of the upper end of the valve element 8. A spigot 72 is formed in the valve core 8 through an inward protruding structure, the liquid flow channel passes through the spigot 72, the blocking block 83 is matched with the spigot 72, the blocking block 83 and the spigot 72 form the blocking structure, and the blocking block 83 is abutted to the spigot 72, so that the blocking of the liquid flow channel can be realized; the blocking block 83 is separated from the spigot 72, and the conduction of the liquid flow channel can be realized.

The through hole 84 is located at the axial position of the valve core 8, and the blocking block 83 is located outside the through hole 84 and opposite to the through hole 84. Two sides of the root of the blocking block 83 are respectively provided with a through hole 82 communicated with the through hole 84, the valve core 8 is a casting part, the blank of the valve core 8 is a blank with one end closed and the other end open, the closed end is generally in a spherical crown shape, two opposite sides of the closed end are respectively provided with a notch, so that the through hole 82 communicated with the inside of the through hole 84 is formed at the root of the blocking block 83, and the through hole 84 is communicated with the valve core 8. The spigot 72 can be a concave spherical structure, and the spigot 72 can be attached to the spherical-crown-shaped plugging block 83 to realize liquid sealing.

The mounting bracket 3 is of a revolving body structure and comprises a sleeve joint part 33, an intermediate part 32 and a mounting part 31 which are connected into a whole, and the three parts are all hollow cylinders, so that a mounting cavity is formed in the mounting bracket 3, and the valve core 8 and the valve nozzle 7 are assembled in the mounting cavity. The outer diameter of the intermediate portion 32 is shown to be larger than that of the socket portion 33, and the outer diameter of the mounting portion 31 is shown to be larger than that of the intermediate portion 32; the intermediate portion 32 is located between the mounting portion 31 and the socket portion 33 in the axial direction, and the female forward thread is provided on the inner peripheral surface of the mounting portion 31.

Threads which are arranged in opposite directions are respectively processed between the valve nozzle 7 and the valve core 8, and a regular prism-shaped connecting hole is arranged in the sleeving part 31 on the installation rack 3 and is sleeved on a regular prism-shaped part on the valve core 8 in a clearance mode. After the mounting frame 3 is rotated, the mounting frame 3 drives the valve nozzle 7 to rotate circumferentially on the valve core 8, so that the valve nozzle 7 moves axially, and the foaming tank on the foaming gun is opened and closed. The upward movement of the valve nozzle 7 can push open the nozzle on the foaming tank, so that the foaming tank is opened; the downward movement of the valve mouth 7 disengages the nozzle and closes the foam can.

The reverse and forward thread arrangements are relative to each other, and are opposite to each other with respect to the direction of the thread of the internal thread provided on the mounting portion 31 of the mounting bracket 3.

An inward projecting ring 34 is integrally formed on the inner peripheral surface of the outer end of the sleeve portion 33, and an outward pressing ring 81 is integrally formed on the outer peripheral surface of the middle portion of the valve body 8. Firstly, the valve core 8 is inserted into the mounting frame 3, after the valve core 8 is connected in place on the gun body 2, the outward pressing ring 81 is positioned on the outer side of the gun body 2 and has a certain interval with the gun body 2, the inward convex ring 34 is positioned in the interval, and the outward pressing ring 81 is pressed on the outer side of the inward convex ring 34, so that the axial limitation on the mounting frame 3 is realized, and the mounting frame 3 can rotate circumferentially on the valve core 8. In order to limit the upward movement of the valve nozzle 7, a snap spring 10 is arranged on the inner circumferential surface of the middle part 32 of the mounting frame 3, the snap spring 10 is arranged close to the mounting part 31, a protruding ring is integrally formed on the outer circumferential surface of the valve nozzle 7, and the upward movement amplitude of the valve nozzle 7 is limited by the blocking of the protruding ring by the snap spring 10 so as to prevent the valve nozzle 7 from pushing against and damaging a nozzle on the foaming tank.

When the foam tank is installed, the mounting frame 3 is usually kept stable, so that the closed structure is not in an open state under the driving of the mounting frame 3. To achieve a stable position of the mounting frame 3 on the gun body 2, the stepped mounting frame 3 is held by hand and then the foam can is screwed to the mounting portion 31 of the mounting frame 3. The gun body 2 can be provided with an eccentric structure, a notch is arranged at the corresponding position of the mounting rack 3, the eccentric structure is clamped in the notch through pulling operation, and after the foam tank is mounted, clamping stagnation of the eccentric structure is relieved. When the foaming tank is installed, the blocking structure is in a closed state. After the foaming tank is installed in place, the foaming tank continues to rotate in the assembling direction, the mounting frame 3 can rotate on the valve core 8, and the valve nozzle 7 jacks up a nozzle on the foaming tank and is opened synchronously with the plugging structure. When foaming tank is lifted off to needs, along the direction of taking apart rotation foaming tank, foaming tank drives mounting bracket 3 antiport, and antiport 3 of antiport makes aforementioned jam block 83 contradict together with tang 72, and realized shutoff structure's closing. Just because the block structure is in the closed condition, mounting bracket 3 can not continue the antiport to realize relative antiport between foaming tank and the mounting bracket 3, accomplish the dismantlement of foaming tank. Therefore, before the foam tank is removed, the closure structure is in a closed state, so that the blowing agent in the barrel 1 is prevented from flowing back after the foam tank is removed, before the nozzle on the foam tank is disengaged from the bottom ring.

Claims

1. A foaming gun foaming tank opening and closing device comprises a mounting frame, wherein the mounting frame is provided with a connecting structure for connecting with a foaming tank, and the foaming gun foaming tank opening and closing device is characterized in that a valve core and a valve nozzle are coaxially arranged in the mounting frame, the valve nozzle is sleeved on the valve core, liquid is sealed between the valve nozzle and the valve core, the upper end of the valve nozzle is provided with a socket for matching with a nozzle on the foaming tank, and a liquid flow channel penetrates through the valve core and the valve nozzle and is communicated with the socket;

2. The opening and closing device for the foam tank of the foam gun according to claim 1, wherein a blocking structure is arranged in the liquid flow channel between the valve nozzle and the valve core, and the valve nozzle axially moving on the valve core opens the blocking structure to communicate the liquid flow channel or closes the blocking structure to block the liquid flow channel.

3. The opening and closing device for the foam tank of the foam gun according to claim 2, wherein the valve core is provided with a through hole along the axial direction, the through hole forms a part of the liquid flow channel, a blocking block is integrally formed at one end part of the valve core inserted into the valve nozzle, a spigot is arranged at the position of the liquid flow channel in the valve core, and the blocking block and the spigot form the blocking structure.

4. The opening and closing device of the foam tank of the foam gun according to claim 3, wherein the through hole is located at the axial position of the valve core, the blocking block is located at the through hole, and two sides of the root of the blocking block are respectively provided with a through hole communicated with the through hole.

5. The opening and closing device for the foam tank of the foam gun according to claim 1, wherein a cylindrical sleeve portion is provided at a lower position of the mounting frame, and the sleeve portion is sleeved on the valve nozzle.

6. The opening and closing device of the foam tank of the foam gun according to claim 5, wherein the socket joint part is in clearance fit connection with the prism between the valve mouths.

7. The opening and closing device for the foam tank of the foam gun according to claim 5, wherein the mounting frame is of a revolving structure and further comprises a middle portion and a mounting portion, the outer diameter of the middle portion is larger than that of the sleeve portion, the outer diameter of the mounting portion is larger than that of the middle portion, and the middle portion is located between the mounting portion and the sleeve portion in the axial direction.

8. The opening/closing device for the foam tank of the foam gun according to any one of claims 1 to 7, wherein an inward protruding ring is integrally formed on an inner peripheral surface of an outer end of the socket portion, and an outward pressing ring is integrally formed on an outer peripheral surface of a middle portion of the valve body and is pressed against an outer side of the inward protruding ring.