Glue supply device

Abstract

The utility model belongs to the technical field of glue supply equipment, disclose glue supply device. Glue supply device includes glue supply jar, glue supply pipeline, filter and glue supply pump, glue supply jar is used for storing glue, one end of glue supply pipeline communicates with the export of glue supply jar, the other end communicates with the import of filter, glue supply pump sets up on glue supply pipeline, glue supply pump is used for providing conveying power for glue, pressure regulating mechanism includes reflux pipeline and pressure control valve, one end of reflux pipeline communicates with the export of glue supply pump, the other end communicates with the import of glue supply pump, pressure control valve sets up on reflux pipeline, pressure control valve is used for opening when the pressure in glue supply pipeline reaches preset pressure threshold, to make the glue from the export of glue supply pump reflux to the import of glue supply pump through reflux pipeline, thereby avoid the problem of pressure rise caused by filter blockage, effectively reduce the load pressure of glue supply pump, prevent the damage of glue supply pump from overloading, prolong the service life of glue supply pump.

Description

Technical Field

[0001] This utility model relates to the field of glue supply equipment technology, and in particular to glue supply device. Background Technology

[0002] A glue supply system typically includes components such as a glue supply cylinder, glue supply fittings, valves, gear pumps, and filters. The glue supply cylinder is used to store the glue, which is then transported to the gear pump for pressurization through pipelines and valves. After impurities are removed by the filter, the glue is output to the nozzle for user use.

[0003] However, in existing glue supply systems, after prolonged operation, the filter element inside the filter gradually becomes clogged with impurities as the glue supply volume increases, leading to a continuous rise in internal pressure. When the pressure exceeds a set threshold, the filter element risks being crushed. Once crushed, the filter will fail to perform its filtering function, resulting in filtration failure and the potential introduction of impurities into the glue. Simultaneously, the filter pressure will rapidly increase, causing an abnormally high load on the gear pump, potentially leading to overload or even damage to the glue supply pump, severely impacting the stable operation and lifespan of the glue supply equipment.

[0004] Therefore, there is an urgent need for a glue supply device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a glue supply device that effectively reduces the load pressure on the glue supply pump, prevents the glue supply pump from being overloaded and damaged, and extends the service life of the glue supply pump.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Adhesive supply device, including:

[0008] Glue supply tank, used to store glue;

[0009] The glue supply pipeline and the filter are provided, wherein one end of the glue supply pipeline is connected to the outlet of the glue supply tank and the other end is connected to the inlet of the filter.

[0010] A glue supply pump is installed on the glue supply pipeline, and the glue supply pump is configured to provide power for conveying the glue.

[0011] The pressure regulating mechanism includes a return pipeline and a pressure control valve. One end of the return pipeline is connected to the outlet of the glue supply pump, and the other end is connected to the inlet of the glue supply pump. The pressure control valve is located on the return pipeline.

[0012] The pressure control valve is configured to open when the pressure in the glue supply line reaches a preset pressure threshold, so that the glue flows back from the outlet of the glue supply pump through the return line to the inlet of the glue supply pump.

[0013] Optionally, the preset pressure threshold is 0.2 MPa to 0.5 MPa.

[0014] Optionally, the pressure control valve includes:

[0015] The valve body has a valve cavity, which has a first valve port and a second valve port. The first valve port is connected to the outlet of the glue supply pump, and the second valve port is connected to the inlet of the glue supply pump.

[0016] The valve core assembly includes a push rod and a sealing element. The valve body has a first through hole opposite to the first valve port. The first end of the push rod is provided with the sealing element, and the second end slides through the first through hole.

[0017] An elastic component is disposed on the valve body, and the second end of the push rod elastically abuts against the elastic component. The elastic component is used to provide elastic force to the push rod so that the sealing element seals the first valve port.

[0018] Optionally, the resilient component includes:

[0019] A sleeve, one end of which is fixedly connected to the valve body;

[0020] The adjusting nut is threadedly connected to the sleeve.

[0021] An elastic element is provided, the push rod has a protrusion, the elastic element is located inside the sleeve and sleeved on the push rod, one end of the elastic element abuts against the protrusion, and the other end abuts against the adjusting nut, the adjusting nut is used to adjust the compression of the elastic element.

[0022] Optionally, the outer wall of the adjusting nut is provided with an anti-slip structure, which includes raised ridges and / or raised dots.

[0023] Optionally, the pressure control valve further includes a first sealing element, wherein the first valve port is provided with a first sealing surface at one end located in the valve cavity, the first sealing element is fixed to one side of the sealing element, and the first sealing element can seal against the first sealing surface.

[0024] Optionally, the pressure control valve further includes a second sealing element, wherein the first through hole is provided with a second sealing surface at one end located in the valve cavity, the second sealing element is fixed on the second sealing surface, and the push rod passes through the second sealing element.

[0025] Optionally, the filter includes:

[0026] The housing has a filter inlet and a filter outlet. The filter inlet is connected to the outlet of the glue supply pump, and the filter outlet is connected to the glue outlet.

[0027] A filter element is disposed in the housing, and the filter element is used to filter the glue that has passed through the filter.

[0028] A pressure gauge, which is connected to the interior of the housing, is used to display the pressure value of the filter.

[0029] Optionally, the adhesive supply line includes:

[0030] A first connecting pipe, one end of which is connected to the outlet of the glue supply tank and the other end of which is connected to the inlet of the glue supply pump, and a first branch port is provided on the first connecting pipe;

[0031] The second connecting pipe has one end connected to the outlet of the glue supply pump and the other end connected to the inlet of the filter. The second connecting pipe is provided with a second branch port.

[0032] One end of the return pipe is connected to the second branch port, and the other end is connected to the first branch port.

[0033] Optionally, the first connecting pipe is provided with a first valve, which is used to connect or disconnect the glue supply tank from the glue supply pump.

[0034] Beneficial effects:

[0035] The glue supply device provided by this utility model connects the outlet and inlet of the glue supply pump through a return pipeline. A pressure control valve is installed on the return pipeline, which automatically opens when the pressure in the glue supply pipeline exceeds a preset pressure threshold, allowing the glue to flow back from the outlet to the inlet of the glue supply pump through the return pipeline. This avoids the pressure rise problem caused by filter blockage, effectively reduces the load pressure on the glue supply pump, prevents the glue supply pump from being overloaded and damaged, extends the service life of the glue supply pump, and also avoids filter failure caused by excessive pressure, maintains stable pressure at the filter, and improves the glue supply quality. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the adhesive supply device provided by this utility model;

[0037] Figure 2 This is a structural cross-sectional view of the pressure regulating mechanism provided by this utility model.

[0038] In the picture:

[0039] 100. Glue supply tank;

[0040] 200. Adhesive supply line; 210. First connecting pipe; 211. First branch port; 220. Second connecting pipe; 221. Second branch port; 230. First valve;

[0041] 300. Filter; 310. Housing; 320. Filter element; 330. Pressure gauge;

[0042] 400. Glue supply pump;

[0043] 500, Pressure regulating mechanism; 510, Return line; 520, Pressure control valve; 521, Valve body; 522, Valve core assembly; 5221, Push rod; 52211, Protrusion; 5222, Sealing element; 523, Elastic component; 5231, Sleeve; 5232, Adjusting nut; 5233, Elastic element; 524, First seal; 525, Second seal. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] This embodiment provides an adhesive supply device, such as... Figure 1 As shown, the glue supply device includes a glue supply tank 100, a glue supply pipeline 200, a filter 300, and a glue supply pump 400. The glue supply tank 100 is used to store glue. One end of the glue supply pipeline 200 is connected to the outlet of the glue supply tank 100, and the other end is connected to the inlet of the filter 300. The glue supply pump 400 is installed on the glue supply pipeline 200 and is used to provide power for conveying the glue. The pressure regulating mechanism 500 includes a return pipeline 510 and a pressure control valve 520. One end of the return pipeline 510 is connected to the outlet of the glue supply pump 400, and the other end is connected to the inlet of the glue supply pump 400. The pressure control valve 520 is connected to the return pipe 510. The pressure control valve 520 is used to open when the pressure in the glue supply pipe 200 reaches the preset pressure threshold, so that the glue flows back from the outlet of the glue supply pump 400 through the return pipe 510 to the inlet of the glue supply pump 400. This avoids the pressure rise problem caused by the blockage of the filter 300, effectively reduces the load pressure of the glue supply pump 400, prevents the glue supply pump 400 from being overloaded and damaged, and also avoids the filter 300 from failing due to excessive pressure. It maintains the pressure at the filter 300 and improves the glue supply quality.

[0049] Optionally, the preset pressure threshold can be 0.2Mpa-0.5Mpa. This range can ensure that the filter 300 maintains good filtration performance under normal working pressure, and also ensure that the filter 300 has good filtration effect. When the pressure at the filter 300 exceeds the safety value, backflow is triggered in time to reduce the risk of pressure loss and flattening of the filter element 320 and extend the service life of the filter 300.

[0050] Optionally, the preset pressure threshold can be 0.2 MPa, 0.3 MPa, 0.4 MPa, or 0.5 MPa. By setting multiple selectable pressure thresholds, it is possible to flexibly adjust the critical pressure for triggering backflow according to different application scenarios, glue supply processes, and the performance of the filter 300, making pressure regulation more precise and reliable. This glue supply device not only ensures that the filter 300 performs well under appropriate pressure, but also triggers backflow in a timely manner when the pressure exceeds the set value, reducing the risk of the filter element 320 being damaged or crushed, extending the service life of the filter 300, and improving the overall safety, stability, and applicability of the glue supply device.

[0051] Optionally, such as Figure 2As shown, the pressure control valve 520 includes a valve body 521, a valve core assembly 522, and an elastic component 523. The valve body 521 has a valve cavity with a first valve port and a second valve port. The first valve port is connected to the outlet of the glue supply pump 400, and the second valve port is connected to the inlet of the glue supply pump 400. The valve core assembly 522 includes a push rod 5221 and a sealing element 5222. The valve body 521 has a first through hole opposite to the first valve port. The first end of the push rod 5221 is provided with the sealing element 5222, and the second end slides through the first through hole. The elastic component 523 is disposed on the valve body 521. The second end of the push rod 5221 elastically abuts against the elastic component 523. The elastic component 523 is used to provide elastic force to the push rod 5221 so that the sealing element 5222 seals the first valve port. When the pressure inside the glue supply line 200 exceeds the preset pressure threshold, the glue pushes the push rod 5221 to overcome the elastic force of the elastic component 523, and the sealing component 5222 leaves the first valve port, thereby opening the return channel and realizing glue backflow. This pressure control valve 520 has a simple and reliable structure. It utilizes the pre-tightening force provided by the elastic component 523 to achieve pressure-triggered control, requiring no external control signal. It has a fast response speed and can effectively prevent abnormal pressure increases inside the filter 300, improving the sensitivity and reliability of backflow control, and further enhancing the safety and stability of the glue supply device.

[0052] Optionally, such as Figure 2 As shown, the elastic component 523 includes a sleeve 5231, an adjusting nut 5232, and an elastic element 5233. One end of the sleeve 5231 is fixedly connected to the valve body 521. The adjusting nut 5232 is threadedly connected to the sleeve 5231. The push rod 5221 has a protrusion 52211. The elastic element 5233 is located inside the sleeve 5231 and sleeved on the push rod 5221. One end of the elastic element 5233 abuts against the protrusion 52211, and the other end abuts against the adjusting nut 5232. The adjusting nut 5232 is used to adjust the compression of the elastic element 5233, thereby adjusting the amount of elastic force it applies to the push rod 5221. The structure of this elastic component 523 allows the opening pressure of the pressure control valve 520 to be flexibly adjusted according to actual needs, improving the adaptability and versatility of the device.

[0053] Optionally, the outer wall of the adjusting nut 5232 is provided with an anti-slip structure, which includes raised ridges and / or raised dots. By providing an anti-slip structure, the friction of the outer surface of the adjusting nut 5232 can be effectively increased, making it easier for operators to manually rotate the adjusting nut 5232 and improving ease of use.

[0054] Optionally, such as Figure 2As shown, the pressure control valve 520 also includes a first sealing element 524. The first valve port is located at one end of the valve cavity and has a first sealing surface. The first sealing element 524 is fixed to one side of the sealing element 5222. The first sealing element 524 can seal against the first sealing surface. When the pressure control valve 520 is in the closed state, it can effectively prevent glue backflow, avoid glue supply pressure fluctuations or filtration effect reduction, and improve the reliability of glue supply.

[0055] Optionally, the pressure control valve 520 further includes a second seal 525. A second sealing surface is provided at one end of the first through-hole located within the valve cavity. The second seal 525 is fixed to the second sealing surface, and the push rod 5221 passes through the second seal 525. By providing the second seal 525, the gap between the push rod 5221 and the valve body 521 can be effectively sealed, preventing adhesive from leaking along this gap to the outside of the valve body 521, thereby improving the sealing performance of the pressure control valve 520.

[0056] Optionally, the filter 300 includes a housing 310, a filter element 320, and a pressure gauge 330. The housing 310 has a filter inlet and a filter outlet. The filter inlet is connected to the outlet of the glue supply pump 400, and the filter outlet is connected to the glue outlet. The filter element 320 is disposed in the housing 310 and is used to filter the glue passing through the filter 300, effectively removing impurities from the glue and ensuring the quality of glue supply. In this embodiment, the glue supply pump is a gear pump. Gear pumps have a compact structure, stable delivery, and can provide continuous and reliable glue supply power to the glue supply device.

[0057] Optionally, the filter 300 also includes a pressure gauge 330, which is connected to the interior of the housing 310. The pressure gauge 330 displays the pressure value of the filter 300, allowing operators to monitor the filtration status in a timely manner. When the filter element 320 gradually becomes clogged, causing the internal pressure to rise, the pressure gauge 330 can visually reflect the pressure change, reminding the user to perform timely maintenance or replace the filter element 320. This effectively prevents damage to the filter 300 or overload of the glue supply pump 400 due to overpressure, improving the operational safety and reliability of the glue supply device.

[0058] Optionally, the glue supply pipeline 200 includes a first connecting pipe 210 and a second connecting pipe 220. One end of the first connecting pipe 210 is connected to the outlet of the glue supply tank 100, and the other end is connected to the inlet of the glue supply pump 400. The first connecting pipe 210 is provided with a first branch port 211. One end of the second connecting pipe 220 is connected to the outlet of the glue supply pump 400, and the other end is connected to the inlet of the filter 300. The second connecting pipe 220 is provided with a second branch port 221. One end of the return pipeline 510 is connected to the second branch port 221, and the other end of the return pipeline 510 is connected to the first branch port 211. Through the above structure, a closed-loop return path is realized between the outlet and inlet of the glue supply pump 400, so that when the pressure control valve 520 is opened, the glue can smoothly return from the outlet of the glue supply pump 400 to its inlet, effectively reducing the pipeline pressure and preventing overpressure from causing overload damage to the glue supply pump 400.

[0059] In this embodiment, a first tee fitting is provided on the first pipeline, and the first tee fitting has a first branch port 211. A second tee fitting is provided on the second pipeline, and the second tee fitting has a second branch port 221. The above design structure is simple and facilitates connection to the return pipeline 510, realizing closed-loop return between the outlet and inlet of the glue supply pump 400. This effectively regulates the system pressure, prevents overpressure from damaging the glue supply pump 400 and the filter 300, and improves the operational stability and safety of the glue supply device.

[0060] Optionally, a first valve 230 is provided on the first connecting pipe 210. The first valve 230 is used to connect or disconnect the glue supply tank 100 from the glue supply pump 400. By setting the first valve 230, it is convenient to cut off the flow of glue between the glue supply tank 100 and the glue supply pump 400 during the replacement of the filter element 320, preventing glue from continuing to flow into the filter 300, avoiding glue leakage, waste or contamination of the operating area, improving the safety and convenience of the maintenance process, and also facilitating local maintenance and inspection of the glue supply device, providing controllability and practicality of the glue supply device.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A glue supply device, characterized in that, include: Glue supply tank (100) for storing glue; The glue supply line (200) and the filter (300) are provided. One end of the glue supply line (200) is connected to the outlet of the glue supply tank (100), and the other end is connected to the inlet of the filter (300). A glue supply pump (400) is installed on the glue supply pipeline (200), and the glue supply pump (400) is configured to provide delivery power to the glue; The pressure regulating mechanism includes a return pipe (510) and a pressure control valve (520). One end of the return pipe (510) is connected to the outlet of the glue supply pump (400), and the other end is connected to the inlet of the glue supply pump (400). The pressure control valve (520) is disposed on the return pipe (510). The pressure control valve (520) is configured to open when the pressure in the glue supply line (200) reaches a preset pressure threshold, so that the glue flows back from the outlet of the glue supply pump (400) through the return line (510) to the inlet of the glue supply pump (400).

2. The adhesive supply device according to claim 1, characterized in that, The preset pressure threshold is 0.2 MPa-0.5 MPa.

3. The adhesive supply device according to claim 1, characterized in that, The pressure control valve (520) includes: A valve body (521) is provided inside the valve body (521). The valve chamber has a first valve port and a second valve port. The first valve port is connected to the outlet of the glue supply pump (400), and the second valve port is connected to the inlet of the glue supply pump (400). The valve core assembly (522) includes a push rod (5221) and a sealing element (5222). The valve body (521) is provided with a first through hole opposite to the first valve port. The first end of the push rod (5221) is provided with the sealing element (5222), and the second end slides through the first through hole. An elastic component (523) is disposed on the valve body (521), and the second end of the push rod (5221) elastically abuts against the elastic component (523). The elastic component (523) is used to provide elastic force to the push rod (5221) so that the sealing member (5222) seals the first valve port.

4. The adhesive supply device according to claim 3, characterized in that, The elastic component (523) includes: Sleeve (5231), one end of which is fixedly connected to valve body (521); Adjusting nut (5232) is threadedly connected to sleeve (5231); The elastic element (5233) is provided with a protrusion (52211) on the push rod (5221). The elastic element (5233) is located inside the sleeve (5231) and sleeved on the push rod (5221). One end of the elastic element (5233) abuts against the protrusion (52211), and the other end abuts against the adjusting nut (5232). The adjusting nut (5232) is used to adjust the compression of the elastic element (5233).

5. The adhesive supply device according to claim 4, characterized in that, The outer wall of the adjusting nut (5232) is provided with an anti-slip structure, which includes ridges and / or dots.

6. The adhesive supply device according to claim 3, characterized in that, The pressure control valve (520) further includes a first sealing element (524), and the first valve port is provided with a first sealing surface at one end located in the valve cavity. The first sealing element (524) is fixed to one side of the sealing element (5222), and the first sealing element (524) can seal against the first sealing surface.

7. The adhesive supply device according to claim 3, characterized in that, The pressure control valve (520) further includes a second sealing element (525), and a second sealing surface is provided at one end of the first through hole located in the valve cavity. The second sealing element (525) is fixed on the second sealing surface, and the push rod (5221) passes through the second sealing element (525).

8. The adhesive supply device according to claim 1, characterized in that, The filter (300) includes: The housing (310) is provided with a filter inlet and a filter outlet. The filter inlet is connected to the outlet of the glue supply pump (400), and the filter outlet is connected to the glue outlet. A filter element (320) is disposed in the housing (310), the filter element (320) being used to filter the glue that has passed through the filter (300); A pressure gauge (330) is connected to the interior of the housing (310) and is used to display the pressure value of the filter (300).

9. The adhesive supply device according to any one of claims 1-8, characterized in that, The adhesive supply line (200) includes: The first connecting pipe (210) has one end connected to the outlet of the glue supply tank (100) and the other end connected to the inlet of the glue supply pump (400). The first connecting pipe (210) is provided with a first branch port (211). The second connecting pipe (220) has one end connected to the outlet of the glue supply pump (400) and the other end connected to the inlet of the filter (300). The second connecting pipe (220) is provided with a second branch port (221). One end of the return pipe (510) is connected to the second branch port (221), and the other end is connected to the first branch port (211).

10. The adhesive supply device according to claim 9, characterized in that, The first connecting pipe (210) is provided with a first valve (230), which is used to connect or disconnect the glue supply tank (100) from the glue supply pump (400).

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