CN215917868U

CN215917868U - Foaming gun adapter liquid guide device

Info

Publication number: CN215917868U
Application number: CN202122417638.3U
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: 2022-03-01
Anticipated expiration: 2031-10-08

Abstract

The utility model discloses a foaming gun adapter liquid guiding device which comprises a valve core and a valve nozzle coaxially sleeved on the valve core, wherein liquid is sealed between the valve nozzle and the valve core, the upper end of the valve nozzle is provided with a carrying port matched with a nozzle on a foaming tank, and a liquid flow channel penetrates through the valve core and the valve nozzle and is communicated with the carrying port. 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. Reverse internal threads are reversely arranged on the inner circumferential surface of the mounting frame, external threads which are matched and connected with the reverse internal threads are arranged on the outer circumferential surface of the valve nozzle, and the valve nozzle and the valve core are circumferentially fixed relatively. The valve nozzle can be driven to axially move through the mounting frame, so that the plugging structure is opened or closed, the foaming agent is conducted or cut off, the operation is simple and convenient, and the use requirement of the foaming gun can be well met.

Description

Foaming gun adapter liquid guide device

Technical Field

The utility model relates to a foaming gun, in particular to a liquid guide device arranged in an adapter 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. The gun body is provided with a trigger which is connected with the needle rod, when the trigger is pulled, the needle rod can act along with the trigger, after the needle rod moves towards the rear side direction of the gun body under the driving of the trigger, a gap can be formed between the front end of the needle rod and a gun nozzle arranged at the front end part of the gun barrel, foaming agent can flow out of the gap to the outer side of the gun barrel, and the size of the gap is related to the flow of the foaming agent.

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.

The adapter is internally provided with a one-way sealing ball, in order to ensure the one-way sealing effect of the sealing ball, a conical spring is required to be arranged on the inner side of the sealing ball, and the sealing ball is pushed and pressed against the sealing gasket through the conical spring so as to realize one-way sealing. The foaming gun which is frequently used usually has no problem of solidification blockage, but in the practical application process, due to various reasons, the foaming gun can be stopped for a long time, solid crystals can be generated at the conical spring which is immersed in the foaming agent, and after the solid crystals are more, the conical spring can be inactivated, so that the sealing between the sealing ball and the sealing washer can be influenced. When unloading the foaming jar, because the ball sealer can not in time contradict sealed packing and circle, and make the blowing agent in the rifle pipe can be from the outside that the clearance department between ball sealer and the seal packing refluxes the adapter, need in time wash these refluxes to can bring the trouble in using.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: the liquid guide device of the foaming gun adapter is provided, so that a liquid flow channel can be conveniently blocked or opened as required in the using process of a foaming gun, and the actual using requirement of the foaming gun can be met.

The technical measures adopted for solving the technical problems are as follows: a foaming gun adapter liquid guide device is arranged in a mounting rack, and the mounting rack is provided with a connecting structure for connecting with a foaming tank;

a plugging 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 enables the plugging structure to be opened to conduct the liquid flow channel or enables the plugging structure to be closed to plug the liquid flow channel;

reverse internal threads are reversely arranged on the inner circumferential surface of the mounting frame, external threads which are matched and connected with the reverse internal threads are arranged on the outer circumferential surface of the valve nozzle, and the valve nozzle and the valve core are circumferentially fixed relatively.

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 reverse direction is referred to as the forward direction, 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. 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. Valve mouth and case circumference are fixed relatively, can realize through setting up the spline structure, also can be provided with the sealing washer between valve mouth and case, through the extrusion of sealing washer, and make the valve mouth can not follow the mounting bracket and rotate together, and realize the axial motion of case on the valve mouth.

Due to the provision of the coupled thread structures, turning the mounting bracket causes the valve nozzle to move in the desired axial direction. Especially when the foaming tank is dismounted, the foaming tank can rotate in the direction which is suitable for the forward arrangement of the threads, and the blocking structure is closed before the foaming tank rotates relative to the mounting frame in the circumferential direction, so that the foaming agent in the gun pipe cannot flow back even if a nozzle on the foaming tank is separated from a bearing hole. When the foaming tank is assembled, the mounting frame can be located at a fixed position, and the blocking structure is in a closed state.

Further, a cylindrical socket portion is provided at a lower position of the mounting bracket, and the reverse internal thread is provided on an inner peripheral surface of the socket portion. Through being provided with the portion of cup jointing, and conveniently realize the axial motion of valve nozzle through the mounting bracket, compact structure nature is good, the installation of being convenient for.

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. When the assembly of foaming tank is carried out, the mounting bracket can be held by the aid of the movable limiting structures or hands, so that the mounting bracket is circumferentially fixed.

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.

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. the blocking structure is arranged in the liquid flow channel, the blocking structure is opened and closed due to the axial movement of the valve nozzle, and the axial movement of the valve nozzle is started by the mounting frame, so that the blocking structure is convenient and quick to operate, the existing structure on the foaming gun can be well utilized, and the operation requirement on the blocking structure is met.

2. The closing and opening of the plugging structure are caused by the axial movement of the valve nozzle, the axial movement of the valve nozzle is controlled by the rotating mounting frame through the set reverse threads, the sealing effect of the plugging structure per se can not be failed due to long-time nonuse, so that when the foaming tank is replaced or is detached, the foaming agent in the gun tube is not easy to flow back to the outer side of the adapter, and the actual use requirement of the foaming gun can be well met.

3. The setting and the starting mechanism of the blocking structure can realize that the nozzle on the foaming tank is opened by jacking and the blocking structure is opened to keep synchronization, and the leakage of foaming agent is not easy to occur when the foaming tank is assembled, so that 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 liquid guide device is arranged in an adapter which is assembled on a foaming gun and is used for realizing the installation of a foaming tank storing foaming agent, and the liquid guide device is combined with the attached drawings of the specification. 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 coupling head, the outer peripheral surface of the coupling head is provided with an external thread which is matched and coupled with the positive internal thread, and the foaming tank is coupled and fixed on the mounting frame 3 through thread coupling. The structure of the liquid guiding 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 outer end part of the nozzle is supported by the bottom ring, and after the bottom ring presses the nozzle, the nozzle 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 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.

The screw thread structures which are reversely arranged and mutually connected are respectively processed between the valve nozzle 7 and the sleeve joint part 33 of the mounting frame 3, the valve nozzle 7 has certain circumferential stability on the valve core 8 under the limiting action of the sealing ring 9, and when the mounting frame 3 is rotated, the valve nozzle 7 can axially move on the valve core 8 under the action of the reversely arranged screw thread structures. The reverse internal thread is arranged on the inner circumferential surface of the sleeve joint part 33, and the outer circumferential surface of the valve nozzle 7 is provided with an external thread which is matched and connected with the reverse internal thread.

The reverse and forward set are relative to each other, and are based on the screw direction of the internal thread provided on the mounting portion 31 of the mounting bracket 3, the screw direction of the forward and reverse set screw thread is opposite, and the normal internal thread is provided in the forward set.

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.

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 adapter liquid guide device is arranged in a mounting rack, and the mounting rack is provided with a connecting structure for connecting with a foaming tank;

2. The foam gun adapter liquid guiding device according to claim 1, wherein a cylindrical socket portion is provided at a lower position of the mounting bracket, and the reverse internal thread is provided on an inner peripheral surface of the socket portion.

3. The foam gun adapter liquid guiding device according to claim 2, wherein the mounting frame is of a revolving structure, and further comprises an intermediate portion and a mounting portion, the outer diameter of the intermediate portion is larger than that of the sleeve 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 sleeve portion in the axial direction.

4. The adapter fluid-guiding device of claim 1, 2 or 3, wherein the valve core is provided with a through hole along its axial direction, the through hole forms a part of the fluid channel, a blocking block is integrally formed on one end of the valve core inserted in the valve nozzle, a stop is provided in the valve core at the position of the fluid channel, and the blocking block and the stop form the blocking structure.

5. The foam gun adapter liquid guiding device according to claim 4, wherein the through hole is located at the axis 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.

6. The foam gun adapter liquid guiding device according to claim 1, 2 or 3, wherein an inward bulge ring is integrally formed on the inner peripheral surface of the outer end of the sleeve portion, and an outward press ring is integrally formed on the outer peripheral surface of the middle position of the valve core, and the outward press ring is pressed against the outer side of the inward bulge ring.