Wet timber glue spraying tank

Abstract

The utility model belongs to the technical field of glue spraying tank, concretely relates to a wet material glue spraying tank, including the jar body, the jar body is hollow in the inside, its top is equipped with the jar mouth, the inside of jar body is equipped with the inner bag for containing wet material glue, the inner bag is connected with the glue outlet valve, the glue outlet valve includes the valve body, the outer wall of valve body is sealedly connected with the jar mouth, the jar body inner wall and the outer wall of inner bag are filled with compressed gas between. The utility model seals wet material glue in the independent inner bag, and utilizes the compressed gas between jar body and inner bag to provide extrusion force. In use, the compressed gas extrudes the inner bag and makes wet material glue discharge, the outside air can not enter the inner bag inside and contact wet material glue all the time, eliminates the phenomenon that wet material glue solidifies and forms crust because of contacting moisture in the air, effectively prolongs the shelf life, avoids product waste.

Description

Technical Field

[0001] This utility model belongs to the field of adhesive spraying can technology, specifically relating to a wet adhesive spraying can. Background Technology

[0002] Wet wood adhesive is a specialized adhesive product developed for wet wood with high moisture content. Its core component is a polyurethane base, which forms the bond strength through a cross-linking reaction between active isocyanate groups and the moisture in the wood. Its excellent bonding performance and environmentally friendly characteristics make it an important alternative to traditional solvent-based adhesives, and it is widely used in construction, decoration, furniture manufacturing, and the automotive industry for bonding various materials such as wood, metal, plastic, and glass.

[0003] However, the inherent curing characteristics of wet adhesives also present significant challenges to their packaging, storage, and use. Currently, most wet adhesive products on the market are packaged in plastic bottles. This traditional packaging method has a drawback: after each use, outside air enters the container. The moisture in this air reacts with the remaining wet adhesive on the bottle opening, the inner wall of the cap, and the surface, causing the adhesive to gradually harden and form a layer or clump of cured skin. This phenomenon is commonly referred to as skinning or surface curing. This cured skin contaminates subsequently extruded fresh wet adhesive, causing particles to form during bonding, affecting the bonding effect and aesthetics. More seriously, repeated opening and closing continuously introduces moisture, constantly consuming the active ingredients and significantly shortening the overall shelf life of the wet adhesive within the packaging, resulting in product waste and economic losses. Users often need to clean the bottle opening frequently, and may even discard the entire bottle due to premature curing of the wet adhesive, leading to a poor user experience.

[0004] Therefore, developing a packaging solution that can isolate wet adhesive from air has become an urgent technical problem to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a wet adhesive spray can to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows: A wet adhesive spray can includes a can body, which is hollow inside and has an opening at the top. Inside the can body is an inner bag for holding wet adhesive. The inner bag is connected to a dispensing valve, which includes a valve body. The outer wall of the valve body is sealed to the can opening. Compressed gas is filled between the inner wall of the can body and the outer wall of the inner bag. When the dispensing valve is opened, the wet adhesive in the inner bag is discharged outward through the dispensing valve under the pressure of the compressed gas.

[0007] As a further improvement, the valve body has a cylindrical first valve chamber inside, the top of the first valve chamber has a top wall, and a cylindrical valve core is provided in a sealed sliding manner inside the first valve chamber. The upper end face of the valve core is recessed downward along the axial direction to form a vertical hole. The top of the vertical hole is connected to a conduit. The other end of the conduit passes through the top wall and extends out of the valve body. A radial transverse hole is provided on the circumferential side wall of the valve core. The bottom end of the transverse hole is connected to the bottom of the vertical hole. When the position of the transverse hole is lower than the bottom wall of the first valve cavity, the wet adhesive in the inner bag flows out after passing through the transverse hole, the vertical hole and the conduit in sequence.

[0008] As a further improvement, the bottom of the first valve chamber is connected to a cylindrical second valve chamber. The diameter of the first valve chamber is larger than that of the second valve chamber. The bottom of the second valve chamber is provided with a bottom wall, which is connected to the inside of the inner bag.

[0009] As a further improvement, a compression spring is provided in the second valve chamber, with one end of the compression spring fixedly connected to the bottom wall and the other end fixedly connected to the bottom wall of the valve core.

[0010] As a further improvement, the valve body is provided with a filling mechanism for filling the inner bag with wet adhesive. The filling mechanism includes a reversing column, and the reversing column is provided with an adhesive inlet channel. The first valve chamber has a radially extending glue storage chamber on its circumferential side wall. The bottom wall of the glue storage chamber has a glue outlet channel that communicates with the inside of the inner bag. When the outlet of the glue inlet channel is aligned with the glue storage chamber, the wet glue flows through the glue inlet channel, the glue storage chamber and the glue outlet channel in sequence before entering the inner bag.

[0011] As a further improvement, the outer wall of the reversing column is in a sealed rotatable connection with the first valve chamber and in a sealed sliding connection with the valve core. The glue inlet channel includes a vertical first glue inlet channel and a horizontal second glue inlet channel. One end of the second glue inlet channel is connected to the bottom of the first glue inlet channel, and the other end is connected to the circumferential side wall of the reversing column. The height of the second glue inlet channel corresponds to the height of the glue storage cavity.

[0012] As a further improvement, a pressure relief channel communicating with the outside is provided on the top wall of the rubber storage chamber, and a one-way valve is provided at the top of the pressure relief channel.

[0013] As a further improvement, an operating knob is fixedly connected to the top of the commutator, and a conduit passes through the operating knob; The top of the valve body is provided with one or more positioning grooves, and the lower end face of the operating knob is provided with an elastic positioning component. When the operating knob is rotated to a specific working position, the elastic positioning component is engaged in the corresponding positioning groove.

[0014] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows: This utility model provides a wet adhesive spray can that seals the wet adhesive in an independent inner bag and utilizes compressed gas between the can and the inner bag to provide extrusion pressure. During use, the compressed gas squeezes the inner bag, expelling the wet adhesive. Outside air is prevented from entering the inner bag and contacting the wet adhesive, thus eliminating the phenomenon of the wet adhesive hardening and forming a skin due to contact with moisture in the air. This effectively extends the shelf life and avoids product waste.

[0015] The dispensing valve is controlled by sliding the valve core. In the closed state, the transverse orifice of the valve core is located above the bottom of the first valve chamber and is tightly sealed by the chamber wall, effectively isolating the adhesive from external air and providing good sealing performance. A compression spring provides a restoring force, ensuring the valve core immediately returns to the closed, sealed position, reducing the risk of adhesive exposure and curing at the valve opening due to delayed closure, and improving ease of use and reliability.

[0016] By rotating the reversing column, the second glue inlet channel is aligned with the glue storage chamber, enabling a rapid and sealed glue filling operation. After filling, rotating the reversing column again displaces the second glue inlet channel from the glue storage chamber, thus cutting off the channel. This achieves the technical effect of allowing the wet material glue spray can to be filled multiple times and recycled. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the glue dispensing valve of this utility model; Figure 3 This is a sectional view of the valve body of this utility model; Figure 4 This is a schematic diagram of the internal structure of the glue filling mechanism of this utility model.

[0018] Wherein: 1-Can body, 2-Inner bag, 3-Dispensing valve, 301-Valve body, 302-First valve chamber, 303-Second valve chamber, 304-Valve core, 305-Vertical hole, 306-Horizontal hole, 307-Conduit, 308-Sealing ring, 309-Compression spring, 4-Filling mechanism, 401-Reversing column, 402-Dispensing channel, 4021-First dispensing channel, 4022-Second dispensing channel, 403-Dispensing chamber, 404-Dispensing channel, 405-Pressure relief channel, 406-Operating knob, 5-Dispensing cap, 6-Suction tube, 7-One-way valve. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments and accompanying drawings. The accompanying drawings are for illustrative purposes only, representing schematic diagrams only, not actual physical objects, and should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] like Figure 1-4 As shown, a wet adhesive spray can includes a can body 1, which is hollow inside and has an opening at the top. Inside the can body 1, there is an inner bag 2 for holding wet adhesive. The inner bag 2 is connected to an adhesive dispensing valve 3, which includes a valve body 301. The outer wall of the valve body 301 is sealed to the can opening. Compressed gas is filled between the inner wall of the can body 1 and the outer wall of the inner bag 2. When the adhesive dispensing valve 3 is opened, the wet adhesive in the inner bag 2 is discharged outward through the adhesive dispensing valve 3 under the pressure of the compressed gas.

[0022] In this embodiment, for the sake of convenience and clarity, the following will be used: Figure 2 The orientations shown define directions such as above, below, top, and bottom. In practical use, the compressed gas can be nitrogen or other compressible gases; this embodiment is not limited, but the gas pressure is preferably set to 4-5 standard atmospheres. The inner bag is preferably made of corrosion-resistant and mechanically sound material such as PP. The compressed gas provides the dispensing power by squeezing the inner bag 2. The dispensing valve 3 isolates the outside air, preventing direct contact between the wet adhesive and the outside air, thus preventing the wet adhesive from curing or becoming contaminated. In this embodiment, it can be used with a glue spray cap 5. It should be noted that the glue spray cap 5 is a conventional technique in the prior art, and its structure will not be described in detail. The function of the glue spray cap 5 is to control the opening and closing of the dispensing valve 3 by pressing the glue spray cap 5, and to make the wet adhesive dispensing along a specific path, facilitating operation.

[0023] In this embodiment, the valve body 301 has a cylindrical first valve cavity 302 inside, the top of the first valve cavity 302 has a top wall, and a cylindrical valve core 304 is slidably disposed inside the first valve cavity 302. The upper end face of the valve core 304 is recessed downward along the axial direction to form a vertical hole 305. The top end of the vertical hole 305 is connected to a conduit 307. The other end of the conduit 307 passes through the top wall and extends out of the valve body 301. A radial transverse hole 306 is provided on the circumferential side wall of the valve core 304. The transverse hole 306 is connected to the bottom end of the vertical hole 305. When the position of the transverse hole 306 is lower than the bottom wall position of the first valve cavity 302, the wet adhesive in the inner bag 2 flows out after passing through the transverse hole 306, the vertical hole 305 and the conduit 307 in sequence.

[0024] When the valve core 304 moves downward, the horizontal hole 306 is lower than the bottom wall of the first valve chamber 302, and the wet adhesive in the inner bag 2 flows out sequentially through the horizontal hole 306, the vertical hole 305, and the conduit 307. When the valve core 304 moves upward, the horizontal hole 306 is sealed by the side wall of the first valve chamber 302, stopping the adhesive flow. The opening and closing of the wet adhesive passage is controlled by the up and down sliding of the valve core 304, resulting in a simple structure and reliable sealing. In practical use, sealing rings 308 are installed at both the upper and lower ends of the valve core 304 to further enhance the sealing between the valve core 304 and the first valve chamber 302.

[0025] In this embodiment, the bottom of the first valve chamber 302 is connected to a cylindrical second valve chamber 303. The diameter of the first valve chamber 302 is larger than the diameter of the second valve chamber 303. The bottom of the second valve chamber 303 is provided with a bottom wall, which is connected to the inside of the inner bag 2. Specifically, a straw 6 extending into the inside of the inner bag 2 is connected to the bottom wall of the second valve chamber 303, and the straw 6 connects the second valve chamber 303 and the inside of the inner bag 2.

[0026] The difference in diameter between the first valve chamber 302 and the second valve chamber 303 forms a stepped structure. The second valve chamber 303 is used to accommodate the compression spring 309 and the wet adhesive, and the bottom wall of the second valve chamber 303 provides force support for the compression spring 309.

[0027] In this embodiment, a compression spring 309 is provided in the second valve chamber 303. One end of the compression spring 309 is fixedly connected to the bottom wall, and the other end is fixedly connected to the bottom wall of the valve core 304.

[0028] In the non-operating state, the spring force of the compression spring 309 pushes the valve core 304 upward, causing the transverse hole 306 to be sealed by the side wall of the first valve chamber 302. In this state, the wet adhesive cannot flow out and is isolated from the outside air. When an external force (such as pressing the conduit 307) pushes the valve core 304 downward, the compression spring 309 is compressed, the transverse hole 306 is lower than the bottom wall of the first valve chamber 302, and the wet adhesive flows out; after the external force is removed, the compression spring 309 returns to its original position, and the valve core 304 moves upward, sealing the transverse hole 306.

[0029] In this embodiment, the valve body 301 is provided with a filling mechanism 4 for filling the inner bag 2 with wet material adhesive. The filling mechanism 4 includes a reversing column 401, and the reversing column 401 is provided with an adhesive inlet channel 402. The first valve chamber 302 has a radially extending glue storage chamber 403 on its circumferential sidewall. The bottom wall of the glue storage chamber 403 has a glue outlet channel 404 that communicates with the interior of the inner bag 2. When the outlet of the glue inlet channel 402 is aligned with the glue storage chamber 403, the wet glue flows sequentially through the glue inlet channel 402, the glue storage chamber 403, and the glue outlet channel 404 before entering the inner bag 2. This enables cyclic and repeated glue filling, improving the reusability of the tank 1.

[0030] In this embodiment, the outer wall of the reversing column 401 is rotatably connected to the first valve chamber 302 and slidably connected to the valve core 304. The glue inlet channel 402 includes a vertical first glue inlet channel 4021 and a horizontal second glue inlet channel 4022. One end of the second glue inlet channel 4022 is connected to the bottom of the first glue inlet channel 4021, and the other end is connected to the circumferential side wall of the reversing column 401. The height position of the second glue inlet channel 4022 corresponds to the height position of the glue storage cavity 403.

[0031] When the reversing column 401 is rotated to align the second glue inlet channel 4022 with the glue storage cavity 403, glue filling can be performed. When the second glue inlet channel 4022 is misaligned with the glue storage cavity 403, the second glue inlet channel 4022 is closed.

[0032] In this embodiment, the top wall of the glue storage cavity 403 is provided with a pressure relief channel 405 that communicates with the outside, and a one-way valve 6 is provided at the top of the pressure relief channel 405.

[0033] During the filling process, a small amount of air may be mixed in. The pressure relief channel 405 is used to expel the air from the glue storage chamber 403 during filling to avoid air blockage. The one-way valve 6 only allows air to be discharged outward through the pressure relief channel 405, and does not allow outside air to enter the glue storage chamber 403 or the inner bag 2 through the pressure relief channel 405. It should be noted that the one-way valve 6 is a commonly used technical means in the prior art, and will not be described in detail in this embodiment. As the number of cycles increases, the pressure of the compressed gas in the tank 1 will inevitably decrease, which will affect the normal glue dispensing. It is necessary to replenish the compressed gas in the tank 1 periodically to maintain the normal internal pressure. Specifically, an inflation valve or other device can be installed on the tank 1, and the compressed gas can be replenished through conventional inflation devices and methods.

[0034] In this embodiment, an operating knob 406 is fixedly connected to the top of the reversing column 401, and a conduit 307 passes through the operating knob 406. The top of the valve body 301 is provided with one or more positioning grooves, and the lower end face of the operating knob 406 is provided with an elastic positioning component. When the operating knob 406 is rotated to a specific working position, the elastic positioning component is engaged in the corresponding positioning groove.

[0035] Specifically, the elastic positioning component can be a conventional technology such as a spring ball. Its function is to engage different positioning grooves when the operating knob 406 is rotated to provide a clear operating feel. In addition, corresponding markings are provided on the valve body 301 at corresponding positions to indicate the position status of the operating knob 406.

[0036] This embodiment solves the problem that traditional wet adhesive packaging easily leads to curing or contamination of the wet adhesive during long-term storage, affecting the performance and product lifespan. Specifically, by pressing down the conduit 307, the valve core 304 moves downwards against the resistance of the compression spring 309. When the horizontal hole 306 of the valve core 304 moves down below the bottom wall of the first valve chamber 302, a passage is formed. The compressed gas applies uniform pressure to the inner bag 2, pushing the wet adhesive out of the conduit 307 outlet. When wet adhesive needs to be filled, rotating the operating knob 406 aligns the second glue inlet channel 4022 with the glue storage chamber 403 of the valve body 301. The external glue source enters the glue storage chamber 403 through the first glue inlet channel 4021 and the second glue inlet channel 4022, and finally flows into the inner bag 2. During the filling process, a small amount of air mixed into the glue storage chamber 403 is discharged through the pressure relief channel 405 at the top, and the one-way valve 6 ensures that air can only go out and not enter.

[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A wet adhesive spray can, comprising a can body, characterized in that, The can is hollow inside and has an opening at the top. Inside the can is an inner bag for holding wet adhesive. The inner bag is connected to an adhesive dispensing valve. The adhesive dispensing valve includes a valve body. The outer wall of the valve body is sealed to the can opening. Compressed gas is filled between the inner wall of the can and the outer wall of the inner bag. When the adhesive dispensing valve is opened, the wet adhesive in the inner bag is discharged outward through the adhesive dispensing valve under the pressure of the compressed gas.

2. The wet adhesive spray can according to claim 1, characterized in that, The valve body has a cylindrical first valve chamber inside, the top of the first valve chamber has a top wall, and a cylindrical valve core is slidably installed inside the first valve chamber. The upper end face of the valve core is recessed downward along the axial direction to form a vertical hole. The top end of the vertical hole is connected to a conduit. The other end of the conduit passes through the top wall and extends out of the valve body. A radial transverse hole is provided on the circumferential side wall of the valve core. The transverse hole is connected to the bottom end of the vertical hole. When the position of the transverse hole is lower than the bottom wall of the first valve cavity, the wet adhesive in the inner bag flows out after passing through the transverse hole, the vertical hole and the conduit in sequence.

3. The wet adhesive spray can according to claim 2, characterized in that, The bottom of the first valve chamber is connected to a cylindrical second valve chamber. The diameter of the first valve chamber is larger than the diameter of the second valve chamber. The bottom of the second valve chamber is provided with a bottom wall, which is connected to the inside of the inner bag.

4. The wet adhesive spray can according to claim 3, characterized in that, The second valve chamber is provided with a compression spring, one end of which is fixedly connected to the bottom wall and the other end is fixedly connected to the bottom wall of the valve core.

5. The wet adhesive spray can according to claim 4, characterized in that, The valve body is provided with a filling mechanism for filling the inner bag with wet adhesive. The filling mechanism includes a reversing column, and the reversing column is provided with an adhesive inlet channel. The first valve chamber has a radially extending glue storage cavity on its circumferential sidewall. The bottom wall of the glue storage cavity has a glue outlet channel that communicates with the interior of the inner bag. When the outlet of the glue inlet channel is aligned with the glue storage cavity, the wet glue flows sequentially through the glue inlet channel, the glue storage cavity, and the glue outlet channel before entering the inner bag.

6. The wet adhesive spray can according to claim 5, characterized in that, The outer wall of the reversing column is rotatably and hermetically connected to the first valve chamber, and is slidably and hermetically connected to the valve core. The glue inlet channel includes a vertical first glue inlet channel and a horizontal second glue inlet channel. One end of the second glue inlet channel is connected to the bottom of the first glue inlet channel, and the other end is connected to the circumferential sidewall that penetrates the reversing column. The height of the second glue inlet channel corresponds to the height of the glue storage cavity.

7. The wet adhesive spray can according to claim 6, characterized in that, The top wall of the glue storage chamber is provided with a pressure relief channel that communicates with the outside, and a one-way valve is provided at the top of the pressure relief channel.

8. The wet adhesive spray can according to claim 7, characterized in that, An operating knob is fixedly connected to the top of the reversing column, and the conduit passes through the operating knob; the top of the valve body is provided with one or more positioning grooves, and the lower end face of the operating knob is provided with an elastic positioning component. When the operating knob is rotated to a specific working position, the elastic positioning component is engaged in the corresponding positioning groove.

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