High-efficiency hot melt adhesive solution preparation and glue pipe cleaning system

Abstract

This utility model discloses a high-efficiency hot melt adhesive dispensing hose cleaning system, relating to the field of hose cleaning devices. It includes: a hot melt adhesive preparation tank, comprising a tank body, a heater, and a dispensing pump. The tank body has an outlet. The heater is used to regulate the temperature inside the tank body, and the dispensing pump is configured to discharge the fluid inside the tank body from the outlet. A dispensing hose, one end of which is connected to the outlet, is used to receive the fluid inside the tank body. A vacuum buffer tank is connected to the other end of the dispensing hose and is also connected to a vacuum pump. The vacuum pump is configured to regulate the vacuum level inside the vacuum buffer tank. This utility model improves the cleaning efficiency of the dispensing hose by connecting the hot melt adhesive preparation tank and the vacuum buffer tank via the dispensing hose, utilizing the conveying and heating functions of the hot melt adhesive preparation tank itself, and employing negative pressure to propel the adhesive.

Description

Technical Field

[0001] This utility model relates to the field of hose cleaning devices, specifically to a high-efficiency hot melt adhesive dispensing hose cleaning system. Background Technology

[0002] like Figure 1 As shown, in the prior art, the production process of heat-applied adhesive is as follows: the adhesive liquid is pressurized in the preparation tank a by the glue pump b, and transported to the coating head d through the glue pipe c for coating production; after production is completed, cleaning work is carried out. The coating head d, glue pump b, and preparation tank a are all detachable or open structures, and the remaining residual adhesive liquid can be effectively removed during the cleaning process; however, the glue pipe c does not have an open structure, the cleaning steps are cumbersome, and the remaining residual adhesive liquid is difficult to remove.

[0003] Specifically, in some existing technologies, the cleaning process of the glue delivery hose first requires heating a large amount of high-temperature water in a tank, then pressurizing it with a glue delivery pump and delivering the hot water to the glue delivery hose to heat the residual glue. After the glue softens, it is pushed out of the pipe by the hot water. Since the glue delivery pump is a gear pump, the pressure generated by the liquid delivery is limited, and it can only achieve a simple unblocking effect. This results in high energy consumption, long time, and low residual glue removal rate for the entire process. After high-temperature hot water cleaning, compressed air is used to purge and further remove residual glue from the pipe. This process, while the high-pressure gas carries away the residual glue, also cools the glue inside the pipe, resulting in a certain amount of glue adhering to the pipe wall (adhering to the inner wall after cooling) as residue.

[0004] Meanwhile, during the process of using compressed air for unblocking and cleaning, when residual colloid forms a blockage in the pipe, as the pressure inside the pipe continues to rise, the blockage gradually loosens. Once the blockage is successfully cleared, the compressed air will be released suddenly, instantly generating a powerful impact force, which may cause the pipe to vibrate violently, shift, or even cause serious problems such as the detachment or cracking of connecting parts or the spraying of residual colloid.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency hot melt adhesive dispensing hose cleaning system. By connecting the hot melt dispensing tank and the vacuum buffer tank through the dispensing hose, and combining the dispensing tank's own conveying and heating functions, the adhesive is pushed by negative pressure to solve the problem of low cleaning efficiency of the positive pressure compressed air used in the prior art.

[0007] This utility model embodiment is achieved through the following technical solution: This utility model embodiment provides a high-efficiency hot melt adhesive dispensing hose cleaning system, including:

[0008] A melt adhesive preparation tank includes a tank body, a heater, and an adhesive pump. The tank body is provided with an outlet. The heater is used to regulate the temperature inside the tank body. The adhesive pump is configured to discharge the fluid inside the tank body from the outlet.

[0009] The delivery hose, with one end connected to the outlet, is used to receive the fluid inside the tank body;

[0010] The vacuum buffer tank is connected to the other end of the glue delivery tube, and the vacuum buffer tank is also connected to a vacuum pump;

[0011] The vacuum pump is set to regulate the vacuum level inside the vacuum buffer tank.

[0012] Optionally, the vacuum buffer tank is provided with a viewing window made of transparent material.

[0013] Optionally, the vacuum buffer tank includes an upper cavity and a lower cavity, the walls of which are made of transparent material;

[0014] The top of the upper cavity is sealed;

[0015] The lower cavity is conical, and its bottom is movably connected to a shock-absorbing tube, which is connected to the glue delivery tube.

[0016] Optionally, the top of the upper cavity is fitted with a movable sealing cap and an end cap.

[0017] Optionally, a sealing ring is provided at the junction of the end cap and the upper cavity.

[0018] Optionally, the end cap is provided with a top interface for connecting to a vacuum pump.

[0019] Optionally, the vacuum pump and the vacuum buffer tank are connected by a vacuum tube, with one end of the vacuum tube connected to the vacuum pump and the other end connected to the top interface.

[0020] Optionally, the outer wall of the vacuum buffer tank is provided with a first support foot and a second support foot, which are symmetrically arranged on both sides of the vacuum buffer tank to support the vacuum buffer tank on the platform.

[0021] Optionally, the first support leg includes a first inclined rod and a first vertical rod, one end of the first inclined rod is connected to the vacuum buffer tank, and the other end is connected to the first vertical rod;

[0022] The second support leg includes a second diagonal rod and a second vertical rod. One end of the second diagonal rod is connected to the vacuum buffer tank, and the other end is connected to the second vertical rod.

[0023] Optionally, a horizontal bar is provided between the first vertical bar and the second vertical bar.

[0024] Compared with the prior art, the embodiments of this utility model have the following advantages and beneficial effects:

[0025] The high-efficiency hot melt adhesive dispensing hose cleaning system provided in this embodiment allows for the following steps: After coating production is complete, the coating head of the adhesive delivery hose is detached and connected to a vacuum buffer tank. A vacuum pump is activated to reduce the pressure inside the buffer tank, creating a negative pressure environment. Simultaneously, the adhesive delivery pump is activated to maintain the fluidity of the adhesive in the hose and prevent coagulation. Under negative pressure, residual adhesive in the hose is drawn into the vacuum buffer tank. Once the residual adhesive is completely removed, both the vacuum pump and the delivery pump are turned off, completing the cleaning process. A heater ensures the adhesive maintains good fluidity during coating and cleaning. This system utilizes negative pressure to attract residual adhesive, enabling more thorough removal of residual adhesive from the hose and improving cleaning efficiency. The entire process eliminates the need for multiple heating and pressurization steps, reducing cleaning steps and time. The vacuum buffer tank, regulated by the vacuum pump, effectively controls the suction speed and amount of adhesive, minimizing safety hazards caused by sudden pressure release. The collected residual adhesive can be recycled and reused in production, reducing waste and lowering costs.

[0026] In general, the high-efficiency hot melt adhesive dispensing hose cleaning system provided by the embodiments of this utility model connects the hot melt adhesive dispensing tank and the vacuum buffer tank through the dispensing hose. Combined with the dispensing tank's own conveying and heating functions, the adhesive is pushed by negative pressure to improve the cleaning efficiency of the dispensing hose. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of a glue dispensing device in the prior art;

[0029] Figure 2 A structural diagram of the hot melt adhesive dispensing hose cleaning system provided in this embodiment of the utility model;

[0030] Figure 3 A structural diagram of the vacuum buffer tank provided for an embodiment of this utility model;

[0031] Figure 4 This is a diagram showing the sealing structure between the end cap and the upper cavity.

[0032] The attached diagram shows the markings and corresponding component names:

[0033] 100 - Melt glue preparation tank, 101 - Tank body, 102 - Glue dispensing pump, 103 - Outlet;

[0034] 200-Glue delivery hose;

[0035] 300-Vacuum buffer tank, 301-Upper cavity, 302-Lower cavity, 303-Shockproof tube, 304-End cap, 305-Sealing ring, 306-Top interface, 307-First support foot, 308-Second support foot, 309-First diagonal rod, 310-First vertical rod, 311-Second diagonal rod, 312-Second vertical rod, 313-Horizontal rod, 314-Handle, 315-Control valve;

[0036] 400 - Vacuum pump, 401 - Vacuum tube. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0041] Example

[0042] This utility model embodiment provides a high-efficiency hot melt adhesive dispensing hose cleaning system, such as... Figure 2As shown, the system includes a melt adhesive preparation tank 100, an adhesive delivery pipe 200, and a vacuum buffer tank 300. The melt adhesive preparation tank 100 includes a tank body 101, a heater, and an adhesive delivery pump 102. The tank body 101 is provided with an outlet 103. The heater is used to regulate the temperature inside the tank body 101. The adhesive delivery pump 102 is configured to discharge the fluid inside the tank body 101 from the outlet 103. The adhesive delivery pipe 200 is connected to the outlet 103 at one end and is used to receive the fluid inside the tank body 101. The vacuum buffer tank 300 is connected to the other end of the adhesive delivery pipe 200. The vacuum buffer tank 300 is also connected to a vacuum pump 400, which is configured to regulate the vacuum level inside the vacuum buffer tank 300.

[0043] Specifically, the tank body 101, used for storing and mixing hot melt adhesive during coating production, is a sealed container capable of withstanding certain temperatures and pressures. A heater can be installed inside the tank body 101 to regulate the temperature inside the tank, ensuring good flowability of the adhesive during coating and cleaning. This heater can be an electric heater or a steam heater; there are no restrictions here, and existing components can be used as long as precise temperature control is achieved. The adhesive pump 102 can be installed at the outlet 103 of the tank body 101 to transport the adhesive from the tank to the adhesive delivery pipe 200. The adhesive pump 102 can be a gear pump or a plunger pump, etc., capable of providing stable delivery pressure. Existing technology can be used to achieve this, and the specific configuration can be determined according to actual needs; there are no restrictions here.

[0044] One end of the adhesive delivery pipe 200 is connected to the outlet 103 of the melt adhesive preparation tank 100 to receive the adhesive liquid inside the tank. During the cleaning process, the adhesive delivery pipe 200 connects the melt adhesive preparation tank 100 to the vacuum buffer tank 300, allowing the adhesive liquid to be drawn into the vacuum buffer tank 300 by negative pressure. The vacuum buffer tank 300 is a sealed container, preferably equipped with a viewing window made of transparent material to facilitate observation of the adhesive liquid intake. The vacuum pump 400 reduces the pressure inside the vacuum buffer tank 300 by evacuating air, thereby creating a negative pressure in the adhesive delivery pipe 200 and pushing the residual adhesive liquid towards the vacuum buffer tank 300. The vacuum pump 400 can be an existing adjustable device, meaning the pumping rate can be adjusted as needed to control the magnitude of the negative pressure, ensuring an efficient and safe cleaning process. For example, by observing the intake of the adhesive in the tank through the viewing window, the vacuum switch and vacuum level can be manually controlled based on conditions such as the amount and state of the adhesive intake.

[0045] In actual operation, after coating is completed, the glue pump 102 can be turned off, and the coating head end of the glue delivery pipe 200 can be detached and connected to the bottom interface of the vacuum buffer tank 300. Before cleaning, the heater heats the glue in the melt preparation tank 100 to a suitable temperature to ensure good fluidity. During cleaning, the glue pump 102 is started to maintain the fluidity of the glue and prevent it from solidifying in the glue delivery pipe 200. At the same time, the vacuum pump 400 is started to reduce the pressure in the vacuum buffer tank 300 by evacuating air, creating a negative pressure environment. The negative pressure is transmitted through the glue delivery pipe 200, attracting residual glue to flow towards the vacuum buffer tank 300. The suction of the glue in the tank can be directly observed through the viewing window of the vacuum buffer tank 300. According to the suction volume and state of the glue in the tank, the pumping speed of the vacuum pump 400 can be manually adjusted to control the vacuum level, ensuring that the cleaning process is efficient and safe. Once the residual adhesive in the adhesive delivery tube 200 has been completely removed, turn off the vacuum pump 400 and the adhesive delivery pump 102 to complete the cleaning process.

[0046] This embodiment of the invention utilizes negative pressure to attract residual adhesive, enabling a more thorough removal of residual adhesive from the adhesive delivery tube 200 and improving cleaning efficiency. Compared to traditional high-temperature hot water cleaning and compressed air purging, the vacuum negative pressure cleaning method does not require a large amount of energy for heating and pressurization, reducing energy consumption. It also eliminates the need for multiple heating and pressurization steps, shortening cleaning time and avoiding problems such as pipe vibration and component detachment caused by high-pressure gas flow in traditional methods. Furthermore, the vacuum buffer tank 300 in this embodiment effectively controls the adhesive intake speed and volume, reducing safety hazards caused by sudden pressure release. The viewing window of the vacuum buffer tank 300 allows for direct observation of the adhesive intake, facilitating manual adjustment of the vacuum level as needed, making the entire cleaning process more precise and efficient. The collected residual adhesive can be recycled and reused in production, reducing waste and lowering costs.

[0047] It should be noted that the viewing window can be made of transparent materials such as borosilicate glass, polycarbonate, polytetrafluoroethylene, and quartz glass. There are no restrictions here, as long as it can achieve sufficient pressure resistance and visibility. The placement is also not restricted here, and can be set according to actual needs.

[0048] For example, such as Figure 3As shown, the vacuum buffer tank 300 includes an upper cavity 301 and a lower cavity 302, both of which have walls made of transparent material. The top of the upper cavity 301 is sealed. The lower cavity 302 is conical, and its bottom is movably connected to a shock-absorbing tube 303, which is connected to the glue delivery tube 200. By making both the upper cavity 301 and the lower cavity 302 transparent, operators can more intuitively observe the glue intake, facilitating manual adjustment of the vacuum level or the delivery pressure of the glue delivery pump 102 as needed, making the entire cleaning process more precise and efficient. Simultaneously, the conical structure of the cavity helps to smoothly introduce the glue into the vacuum buffer tank 300, and the connection between its bottom and the glue delivery tube 200 via the shock-absorbing tube 303 facilitates disassembly and maintenance, while also reducing the impact caused by the glue inflow and extending the equipment's service life. The shock absorber 303 can be made of materials such as rubber or flexible plastic, which has good elasticity and further prevents problems such as pipe displacement and detachment of connecting parts caused by vibration. In order to prevent the adhesive from flowing into the adhesive delivery pipe 200 through the shock absorber 303 after cleaning, a control valve 315 can be installed on the shock absorber 303. The operator can open the control valve 315 during the cleaning operation and close the control valve 315 after the cleaning operation is completed.

[0049] Furthermore, combined Figure 3 and Figure 4 As shown, the top of the upper cavity 301 is movably sealed with an end cap 304. Preferably, a sealing ring 305 is provided at the junction of the end cap 304 and the upper cavity 301. The end cap 304 adopts a movable sealing method, which is convenient for operators to open or close when needed, facilitating maintenance, cleaning, or inspection. During cleaning, the end cap 304 can withstand certain pressure changes. The end cap 304 can also be made of the same transparent material as the upper cavity 301 to maintain the transparency of the entire tank and facilitate observation of the internal conditions. It should be noted that the end cap 304 and the upper cavity 301 are connected by a movable method, which can be a threaded connection, a snap-fit ​​connection, or a flange connection, etc., and is not limited here. The sealing ring 305 can further enhance the sealing performance and ensure that the vacuum buffer tank 300 can maintain a stable vacuum level during operation. In this embodiment of the utility model, a handle 314 can be provided on the top of the end cap 304 for easy disassembly and installation.

[0050] In a preferred embodiment of this utility model, a top interface 306 is provided on the end cap 304, which is used to connect to the vacuum pump 400. Exemplarily, the vacuum pump 400 and the vacuum buffer tank 300 are connected via a vacuum tube 401. One end of the vacuum tube 401 is connected to the vacuum pump 400, and the other end is connected to the top interface 306. Specifically, one end of the vacuum tube 401 is connected to the outlet 103 of the vacuum pump 400 through a suitable interface (such as a threaded interface, flange interface, or quick-connect interface). A sealing ring 305 or a sealing gasket can also be installed at the connection to ensure sealing performance. The other end of the vacuum tube 401 is connected to the end cap 304 of the vacuum buffer tank 300 through the top interface 306. Similarly, the sealing performance of the connection needs to be ensured to prevent gas leakage and ensure that the vacuum buffer tank 300 can maintain a stable vacuum level during operation. The connection method of the vacuum tube 401 facilitates maintenance, cleaning, or inspection by operators, improving the maintainability of the equipment.

[0051] To improve the stability of the cleaning process, in this embodiment of the invention, reference is made to... Figure 2 and Figure 3 As shown, the outer wall of the vacuum buffer tank 300 is provided with a first support leg 307 and a second support leg 308. The first support leg 307 and the second support leg 308 are symmetrically arranged on both sides of the vacuum buffer tank 300 to support the vacuum buffer tank 300 on the platform. Through the cooperation of the first support leg 307 and the second support leg 308, some mechanical vibration can be absorbed, reducing the impact of vibration caused by equipment operation or environmental factors on the tank body, and ensuring its accurate and stable position on the platform. It should be noted that the first support leg 307 and the second support leg 308 can be fixed to the outer wall of the vacuum buffer tank 300 by welding or by bolt connection. There is no restriction here, as long as sufficient connection stability can be achieved.

[0052] In a preferred embodiment of this utility model, the first support leg 307 includes a first diagonal rod 309 and a first vertical rod 310. One end of the first diagonal rod 309 is connected to the vacuum buffer tank 300, and the other end is connected to the first vertical rod 310. The second support leg 308 includes a second diagonal rod 311 and a second vertical rod 312. One end of the second diagonal rod 311 is connected to the vacuum buffer tank 300, and the other end is connected to the second vertical rod 312. A horizontal rod 313 is provided between the first vertical rod 310 and the second vertical rod 312. The arrangement of the first diagonal rod 309 and the second diagonal rod 311 can further improve the stability of the support. The horizontal rod 313 connects the first vertical rod 310 and the second vertical rod 312 to form a stable frame structure, which can also further enhance the stability of the vacuum buffer tank 300. Of course, in other embodiments, the first support leg 307 and the second support leg 308 are not limited to the above structure. Other existing structures can be used to achieve the same effect, and no limitation is made here, as long as sufficient support stability can be achieved.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and descriptions of well-known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the utility model.

Claims

1. A high-efficiency hot melt adhesive solution preparation glue pipe cleaning system, characterized in that, include: The melt glue preparation tank (100) includes a tank body (101), a heater and a glue pump (102). The tank body (101) is provided with an outlet (103). The heater is used to regulate the temperature inside the tank body (101). The glue pump (102) is configured to discharge the fluid inside the tank body (101) from the outlet (103). A delivery tube (200) is connected at one end to the outlet (103) for receiving fluid from the tank body (101); A vacuum buffer tank (300) is connected to the other end of the glue delivery tube (200), and the vacuum buffer tank (300) is also connected to a vacuum pump (400). The vacuum pump (400) is configured to regulate the vacuum level inside the vacuum buffer tank (300).

2. The high-efficiency hot melt adhesive solution preparation and glue pipe cleaning system according to claim 1, characterized in that, The vacuum buffer tank (300) is provided with a viewing window, which is made of transparent material.

3. The high efficiency hot melt adhesive solution dispensing tube cleaning system of claim 2, wherein, The vacuum buffer tank (300) includes an upper cavity (301) and a lower cavity (302), the walls of the upper cavity (301) and the lower cavity (302) are both made of transparent material; The top of the upper cavity (301) is sealed; The lower cavity (302) is conical, and its bottom is movably connected to a shock-absorbing tube (303), which is connected to the glue delivery tube (200).

4. The high-efficiency hot melt adhesive solution preparation and glue pipe cleaning system according to claim 3, characterized in that, The upper cavity (301) has a movable sealing cover at the top, which is fitted with an end cap (304).

5. The high efficiency hot melt adhesive solution dispensing tube cleaning system of claim 4, wherein, A sealing ring (305) is provided at the junction of the end cap (304) and the upper cavity (301).

6. The high efficiency hot melt adhesive solution dispensing tube cleaning system of claim 4, wherein, The end cap (304) is provided with a top interface (306) for connecting to the vacuum pump (400).

7. A high-efficiency hot melt adhesive dispensing hose cleaning system according to claim 6, characterized in that, The vacuum pump (400) and the vacuum buffer tank (300) are connected through a vacuum tube (401), one end of which is connected to the vacuum pump (400) and the other end is connected to the top interface (306).

8. The high efficiency hot melt adhesive solution dispensing tube cleaning system of claim 1, wherein, The outer wall of the vacuum buffer tank (300) is provided with a first support foot (307) and a second support foot (308). The first support foot (307) and the second support foot (308) are symmetrically arranged on both sides of the vacuum buffer tank (300) to support the vacuum buffer tank (300) on the platform.

9. The high-efficiency hot-melt adhesive solution preparation and glue pipe cleaning system according to claim 8, characterized in that, The first support leg (307) includes a first diagonal bar (309) and a first vertical bar (310). One end of the first diagonal bar (309) is connected to the vacuum buffer tank (300), and the other end is connected to the first vertical bar (310). The second support foot (308) includes a second diagonal rod (311) and a second vertical rod (312). One end of the second diagonal rod (311) is connected to the vacuum buffer tank (300), and the other end is connected to the second vertical rod (312).

10. The high-efficiency hot-melt adhesive solution dispensing tube cleaning system according to claim 9, wherein, A horizontal bar (313) is provided between the first vertical bar (310) and the second vertical bar (312).

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