A glue filtering device

Abstract

The application relates to a separating filter, and discloses a glue filtering device which can comprise a pipeline, a plurality of filtering units, a fixing support and a rotating support. The pipeline is provided with a valve and a slit, the valve is arranged between the slit and the inlet of the pipeline, any filtering unit can comprise a filter screen and two clamping frames, the filter screen is fixed in the two clamping frames, the middle part of the rotating support is rotationally connected with the fixing support, a plurality of equal-length supporting rods are arranged on the rotating support, and the plurality of filtering units are correspondingly fixed at the end parts of the plurality of supporting rods. The rotating plane of the rotating support is perpendicular to the length direction of the pipeline, the thickness of any filtering unit is equal to the width of the slit, and when the rotating support rotates, the plurality of filtering units are sequentially clamped into the slit. When the filter screen of a certain filtering unit is blocked, the next clean filtering unit is clamped into the slit and enters the pipeline by adjusting the rotating support, so that the glue can be continuously recovered, and the downtime caused by the filter screen blockage can be greatly shortened.

Description

Technical Field

[0001] This application relates to separation filters, and more particularly to an adhesive filtration device. Background Technology

[0002] Currently, in the paper box manufacturing industry, gluing and forming processes play a crucial role in the final quality of the paper boxes. The gluing process involves applying hot melt adhesive or water-based adhesive to the creases and joints of the paper box, and then applying pressure to bond the components together, thus achieving the connection.

[0003] When using water-based adhesives, companies generally adopt an over-application strategy to cope with uncertainties such as differences in paper absorbency and fluctuations in environmental humidity. At the same time, due to the long curing cycle of adhesives, an adhesive recycling process is usually added between the adhesive application process and the carton forming process.

[0004] However, existing glue recycling devices often contain impurities such as paper scraps in the recycled glue. These impurities frequently clog the filter screen of the glue pipeline during the recycling process. Once the filter screen is clogged, the machine needs to be shut down for treatment, resulting in low production efficiency.

[0005] Therefore, a technology is needed to reduce downtime for filter replacement. Utility Model Content

[0006] The technical problem this application aims to solve is: how to reduce downtime caused by replacing filters.

[0007] To address the aforementioned technical problems, this application provides an adhesive filtration device, comprising: a pipe with a valve and a slit, the valve being located between the slit and the pipe inlet; a plurality of filter units, each filter unit including a filter screen and two clamping frames, the filter screen being fixed in the two clamping frames; a fixed bracket; and a rotating bracket, the middle of which is rotatably connected to the fixed bracket, the rotating bracket having a plurality of support rods of equal length, the plurality of filter units being correspondingly fixed at the ends of the support rods; wherein, the rotation plane of the rotating bracket is perpendicular to the length direction of the pipe, the thickness of each filter unit is equal to the width of the slit, and when the rotating bracket rotates, it causes the plurality of filter units to sequentially engage with the slit.

[0008] In one embodiment, the glue filtration device further includes a first semiconductor refrigeration chip and a second semiconductor refrigeration chip. The first semiconductor refrigeration chip is attached to the pipe between the valve and the slit, and the second semiconductor refrigeration chip is attached to the pipe between the slit and the outlet of the pipe.

[0009] In one embodiment, the glue filtering device further includes a rocker arm, which is fixedly connected to a rotating bracket.

[0010] In one embodiment, the glue filtering device further includes a motor, which is coaxially and fixedly connected to the rocker arm.

[0011] In one embodiment, the filter unit further includes two sealing rings, and a first annular groove is provided on the outer side of any clamping frame for accommodating the sealing rings.

[0012] In one embodiment, the two clamping frames have an annular protrusion on the inner side of one clamping frame and a second annular groove on the inner side of the other clamping frame. When the two clamping frames are assembled, the annular protrusion presses the edge of the filter screen into the second annular groove.

[0013] In one embodiment, the filter unit further includes a confidential screw, and any clamping frame has a threaded hole through which the confidential screw fixes the filter unit to the support rod.

[0014] In one embodiment, the fixed bracket is provided with a bearing, and the rotating bracket is rotatably connected to the fixed bracket through the bearing.

[0015] In one embodiment, the glue filtering device further includes a funnel installed at the inlet of the pipe.

[0016] In one embodiment, the glue filtering device further includes a clamp and a support leg, the clamp being fastened to the side of the funnel and the support leg being fixedly connected to the clamp.

[0017] Compared with the prior art, the glue filtering device of this application has the following advantages:

[0018] Existing glue recovery devices require shutdown for cleaning when the filter screen becomes clogged, severely impacting production efficiency. However, the glue filtration device of this application, when a filter element becomes clogged, only requires a slight delay in rotation. By adjusting the rotating bracket, the next clean filter element is inserted into the opening and enters the pipe, allowing glue recovery to continue. Unlike traditional methods that require prolonged shutdowns for filter replacement, this significantly reduces downtime due to filter clogging, improving the continuity and efficiency of glue recovery. Furthermore, the rotated filter element, being exposed and removed from the internal working environment of the pipe, can be easily disassembled and cleaned. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an adhesive filtration device exemplarily shown in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of another glue filtering device exemplarily shown in an embodiment of this application.

[0021] Figure 3 This is an exploded schematic diagram of an adhesive filtration device exemplarily shown in an embodiment of this application.

[0022] Figure 4 This is a partially enlarged schematic diagram of an adhesive filtering device exemplarily shown in an embodiment of this application.

[0023] Figure label:

[0024] 1. Glue filtration device; 11. Pipe; 111. Valve; 112. Slit; 113. Inlet; 114. Outlet; 12. Filter unit; 121. Filter screen; 122. Clamping frame; 1221. First annular groove; 1222. Annular protrusion; 1223. Second annular groove; 1224. Threaded hole; 123. Sealing ring; 124. Threaded screw; 13. Fixed bracket; 131. Bearing; 14. Rotating bracket; 141. Support rod; 15. First semiconductor refrigeration chip; 16. Second semiconductor refrigeration chip; 17. Rocker arm; 18. Motor; 19. Funnel; 20. Clamp; 21. Support leg. Detailed Implementation

[0025] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0026] In the description of this application, it should be understood that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are intended to distinguish similar objects and are not used to describe a specific structure. It should be understood that such terms are interchangeable where appropriate so that embodiments of this application can be implemented in structures other than those illustrated or described. Furthermore, "comprising," "having," and any variations thereof are intended to cover non-exclusive inclusion. For example, a product or device comprising a series of components or units is not necessarily limited to those explicitly listed, but may also include other components or units not explicitly listed but inherent to these products or devices.

[0027] In the modern packaging industry, cardboard boxes have become the mainstream packaging for industries such as food, pharmaceuticals, and electronics due to their lightweight, ease of processing, and environmental friendliness. Glue is crucial in cardboard box manufacturing; it is widely used from the sides of folded cardboard boxes to the lids of top and bottom lids, and its quality and efficiency directly affect forming and production efficiency.

[0028] With the increasing awareness of environmental protection and intensified market competition, companies are strictly controlling costs. Installing glue recycling devices in cardboard box production equipment has become commonplace. Recycling uncured glue saves on procurement costs and reduces pollution, achieving a win-win situation for both the economy and the environment.

[0029] However, existing glue recycling devices have obvious drawbacks. The cardboard box production process generates impurities such as paper scraps and fibers, which can easily mix into the recycled glue and clog the glue pipe filters. Clogged filters hinder glue flow and reduce recycling efficiency.

[0030] When the filter becomes clogged, the equipment needs to be shut down for repair. Operators have to spend a lot of time disassembling pipes, cleaning or replacing the filter, a tedious process. The adhesive is highly viscous, making cleaning difficult, and residue can affect the filter's performance and lifespan. Frequent shutdowns interrupt the recycling process, disrupt production rhythm, reduce production line efficiency, increase time and labor costs, and ultimately hinder the company's production efficiency and economic benefits.

[0031] Therefore, it is urgent to develop technologies that can reduce downtime and quickly resolve filter clogging issues. These technologies need to be easy to operate, have low maintenance costs, and align with the trend towards high efficiency and intelligent manufacturing in modern cardboard box production.

[0032] Therefore, such as Figure 1-3 As shown in the preferred embodiment of this application, an adhesive filtration device 1 may include: a pipe 11, a plurality of filter units 12, a fixed bracket 13 and a rotating bracket 14.

[0033] The pipe 11 is equipped with a valve 111 and a slit 112. The valve 111 is located between the slit 112 and the inlet 113 of the pipe 11. Each filter unit 12 may include a filter screen 121 and two clamping frames 122. The filter screen 121 is fixed in the two clamping frames 122. The middle part of the rotating bracket 14 is rotatably connected to the fixed bracket 13. The rotating bracket 14 is equipped with several support rods 141 of equal length. Several filter units 12 are correspondingly fixed at the ends of several support rods 141.

[0034] The rotating plane of the rotating bracket 14 is perpendicular to the length direction of the pipe 11. The thickness of any filter element 12 is equal to the width of the slit 112. When the rotating bracket 14 rotates, it drives several filter elements 12 to be inserted into the slit 112 in sequence.

[0035] As can be seen from the above structure of this application, the filter element 12 containing the filter screen 121 undertakes the main filtration function, and multiple filter elements 12 can be used for filtration. Due to the presence of the rotating bracket 14 and the fixed bracket 13, when the rotating bracket 14 rotates, it can drive the support rod 141 to swing, thereby causing the filter elements 12 on the support rod 141 to screw into or out of the opening 112. Therefore, when blockage occurs, it is only necessary to briefly close the valve 111, quickly adjust the rotating bracket to screw out the blocked filter screen 121 and screw in a clean filter screen 121 to open the valve 111, without the need for a complicated replacement process. Therefore, adopting the above structure of this application can save a lot of maintenance time, thereby reducing the downtime caused by replacing the filter screen 121.

[0036] Meanwhile, the filter unit 12 can be disassembled, washed, and reused. Compared to the traditional method of directly replacing the filter screen 121, this reduces the frequency of filter screen 121 replacement and lowers consumable costs. Furthermore, by reducing downtime and improving production efficiency, it indirectly reduces production losses due to downtime, thus lowering the overall cost of glue recycling in cardboard box production from multiple perspectives.

[0037] A valve 111 is provided on the pipe 11, and the valve 111 is located between the opening 112 and the inlet 113 of the pipe 11. In this way, when the filter element 12 is rotated and switched, the flow of glue into the pipe 11 can be cut off by closing the valve 111, so as to avoid glue leakage or other safety problems during the switching process, and provide a safe and stable working environment for the replacement and cleaning of the filter element 12.

[0038] However, the inventors discovered that, since a pipe 11 with a larger diameter may be used, even if the valve 111 is disconnected, the glue on both sides of the slit 112 (such as the glue between the valve 111 and the slit 112) may still flow out due to insufficient surface tension to support the weight of the glue.

[0039] Therefore, in one embodiment of this application, as Figure 1 As shown, the glue filtration device 1 may also include a first semiconductor cooling chip 15 and a second semiconductor cooling chip 16. The first semiconductor cooling chip 15 is attached to the pipe 11 between the valve 111 and the slit 112, and the second semiconductor cooling chip 16 is attached to the pipe 11 between the slit 112 and the outlet 114 of the pipe 11.

[0040] This application utilizes a first thermoelectric cooler 15 and a second thermoelectric cooler 16, which act on the pipe 11 between valve 111 and slit 112, and between slit 112 and pipe outlet 114, respectively. When the filter screen 121 needs to be replaced and valve 111 is closed, the thermoelectric cooler is simultaneously activated to cool the pipe, effectively reducing the temperature of the adhesive inside the pipe 11. As the temperature decreases, the viscosity of the adhesive increases and its fluidity decreases, fundamentally reducing the probability of adhesive leakage due to gravity during filter screen replacement, thus solving the adhesive leakage problem caused by the large diameter of the pipe 11.

[0041] In one embodiment, the glue filtering device 1 may further include a rocker arm 17, which is fixedly connected to the rotating bracket 14.

[0042] With the rocker arm 17 fixedly connected to the rotating bracket 14, the operator can directly and easily rotate the rotating bracket 14 manually from outside the device. Compared to situations where there is no rocker arm 17, which may require going deep into the device or using complex tools to rotate the rotating bracket 14, the rocker arm 17 makes the operation more intuitive and effortless, greatly reducing the difficulty of operation, shortening the preparation time for replacing the filter element 12, and significantly improving the convenience of operation.

[0043] To reduce manpower consumption, in another embodiment of this application, the glue filtering device 1 may also include a motor 18, which is coaxially and fixedly connected to the rocker arm 17.

[0044] The motor 18 and the rocker arm 17 are coaxially fixedly connected, and both are retained, bringing multiple complementary benefits to the glue filtration device 1. This satisfies automation requirements while retaining the flexibility of manual operation. Specifically, the dual configuration of the motor 18 and the rocker arm 17 forms a hardware-level redundancy guarantee mechanism. In the event of a malfunction of the motor 18 or a power supply interruption, the rocker arm 17 can serve as a backup drive component, ensuring that operators can still manually replace the filter element 12, maintaining the normal operation of glue recycling and preventing the entire production process from being interrupted due to equipment failure.

[0045] Furthermore, the introduction of motor 18 provides a mechanical structural foundation for subsequent automation upgrades.

[0046] In one embodiment, such as Figure 3 and 4 As shown, the filter unit 12 may also include two sealing rings 123, and a first annular groove 1221 is provided on the outer side of any clamping frame 122. The first annular groove 1221 is used to accommodate the sealing rings 123.

[0047] During the glue recycling process, a certain pressure exists within the pipe 11. If the seal between the filter element 12 and the pipe 11 is not tight, the glue can easily overflow under pressure. The design of the sealing ring 123 and the first annular groove 1221 provides a reliable guarantee against glue leakage. The first annular groove 1221 positions and fixes the sealing ring 123, preventing it from shifting during installation and use, and maintaining a good seal at all times. Even under conditions such as prolonged operation of the glue recycling device and vibration of the pipe 11, the sealing ring 123 can still tightly adhere to the inner wall of the pipe 11, effectively preventing glue leakage, ensuring the safe and stable operation of the glue recycling device, and reducing the risk of equipment failure and production interruption caused by leakage.

[0048] Furthermore, in another embodiment of this application, such as Figure 3 and 4As shown, in the two clamping frames 122, one clamping frame 122 has an annular protrusion 1222 on its inner side, and the other clamping frame 122 has a second annular groove 1223 on its inner side. When the two clamping frames 122 are assembled, the annular protrusion 1222 squeezes the edge of the filter screen 121 into the second annular groove 1223.

[0049] The assembly structure of the annular protrusion 1222 and the second annular groove 1223, by compressing the edge of the filter screen 121 to deform it, can strongly fix the filter screen 121. During the glue recycling process, the glue continuously impacts the filter screen 121. If the filter screen 121 is not firmly fixed, it is easy for it to shift or loosen, affecting the filtration effect. The large fixing force generated by this structure can effectively prevent the filter screen 121 from shifting during operation.

[0050] During the switching process of the filter unit 12 driven by the rotating bracket 14, the stable structure can reduce the risk of component damage caused by shaking or collision. At the same time, it avoids the filter screen 121 from rubbing against the inner wall of the pipe 11 due to loosening, reducing the possibility of filter screen 121 being damaged or pipe 11 being scratched.

[0051] Meanwhile, the second annular groove 1223 or the annular protrusion 1222 can provide guidance for assembly. As long as the filter screen 121 can cover the second annular groove 1223 or the annular protrusion 1222, a large clamping force can be guaranteed.

[0052] In one embodiment, the filter unit 12 may further include a confidential screw 124, and any clamping frame 122 has a threaded hole 1224, through which the confidential screw 124 fixes the filter unit 12 to the support rod 141.

[0053] The installation and removal of the confidential screw 124 is simple and convenient, and can be completed using ordinary screwdrivers and other tools. When it is necessary to clean the filter unit 12, replace the filter screen 121, or perform maintenance, the operator can quickly unscrew the confidential screw 124 to remove the filter unit 12 from the support rod 141, which greatly shortens the maintenance time.

[0054] Based on this, in one embodiment, an mounting plane can be provided at the end of the support rod 141. Compared with a circular support rod 141, the support rod 141 with a mounting plane can reduce the rotation of the filter element 12 relative to the support rod 141, thereby further increasing the accuracy of the filter element 12 entering the slit 112.

[0055] In one embodiment, the fixed bracket 13 is provided with a bearing 131, and the rotating bracket 14 is rotatably connected to the fixed bracket 13 through the bearing 131.

[0056] In addition to reducing resistance during rotation, bearing 131 can also reduce the fitting clearance of the rotating bracket, thereby increasing the accuracy of the filter element 12 entering the slit 112.

[0057] In one embodiment, such as Figure 1 As shown, the glue filtering device 1 may also include a funnel 19, which is installed at the inlet 113 of the pipe 11.

[0058] The funnel 19 is installed at the inlet 113 of the pipe 11. Its unique structure, which is wider at the top and narrower at the bottom, can effectively expand the collection range of glue, making it easier for the glue that is scattered and splashed during the paper box production process to gather in the funnel 19 and then flow smoothly into the pipe 11 for recycling.

[0059] Based on this, in another embodiment of this application, the glue filtering device 1 may further include a clamp 20 and a support leg 21, the clamp 20 being fastened to the side of the funnel 19, and the support leg 21 being fixedly connected to the clamp 20.

[0060] Clamp 20 is fastened to the side of funnel 19, and support leg 21 is fixedly connected to clamp 20, forming a stable support and fixing system. Clamp 20 can fit tightly against the side of funnel 19, firmly fixing funnel 19 and preventing funnel 19 from shifting or shaking during glue impact or device vibration. Support leg 21 provides a stable support point for funnel 19, keeping funnel 19 balanced when bearing the weight and impact of glue. This structural design enhances the connection stability of funnel 19 and the entire glue filtration device 1, avoiding the impact of funnel 19 loosening on glue recovery effect.

[0061] In any embodiment of this application, the same base plate can be used as the fixing foundation, or the components of the glue filtering device 1 can be fixed at the corresponding positions on the paper box production equipment. This application does not limit this.

[0062] The working process of this application is as follows: During the recycling of cardboard box glue, the funnel 19 is installed at the inlet 113 of the pipe 11. Its unique structure, wider at the top and narrower at the bottom, collects and guides the scattered and splashed glue into the pipe 11. Subsequently, the glue enters the pipe 11 and flows through the filter unit 12. The filter screen 121 in the filter unit 12 intercepts impurities such as paper scraps in the glue, thereby achieving glue purification and recycling. When the filter screen 121 is clogged, the valve 111 located between the slit 112 and the inlet 113 on the pipe 11 is closed, and the first and second semiconductor cooling chips are turned on to cool the pipe 11 between the valve 111 and the slit 112, and between the slit 112 and the outlet 114, reducing the fluidity of the glue and preventing leakage. At this time, the clogged filter unit 12 can be rotated out by manually turning the rocker arm 17, which is fixedly connected to the rotating bracket 14, or by the motor 18 driving the rocker arm 17 to rotate the rotating bracket 14. The clean filter unit 12 can then be inserted into the slit 112 to continue working. The rotating filter unit 12 is fixed to the support rod 141 by the screws 124 on it passing through the threaded holes 1224 of the clamping frame 122, which makes it easy to disassemble and clean. The two clamping frames 122 are assembled and squeezed to the edge of the filter screen 121 by the annular protrusion 1222 and the second annular groove 1223 to ensure that the filter screen 121 is stable. The sealing ring 123 in the first annular groove 1221 on the outside of the clamping frame 122 ensures the sealing between the filter unit 12 and the pipe 11.

[0063] In summary, this application provides an adhesive filtration device 1, which achieves efficient and stable adhesive recycling through the coordinated operation of multiple components. It not only solves the downtime problem caused by filter 121 clogging and reduces the risk of adhesive leakage, but also improves the ease of installation, maintenance efficiency, and space utilization of the device through optimized structure, thereby reducing production costs and significantly enhancing the overall efficiency of cardboard box adhesive recycling.

[0064] The above are merely preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A glue filtering device, characterized in that, The glue filtration device (1) includes: Pipe (11), on which a valve (111) and a slit (112) are provided, the valve (111) being located between the slit (112) and the inlet (113) of the pipe (11); A plurality of filter units (12), each of the filter units (12) includes a filter screen (121) and two clamping frames (122), the filter screen (121) being fixed in the two clamping frames (122); Fixed bracket (13); A rotating bracket (14) is rotatably connected to the fixed bracket (13) at its middle part. The rotating bracket (14) is provided with a plurality of support rods (141) of equal length, and a plurality of filter units (12) are correspondingly fixed at the ends of the plurality of support rods (141). The rotating plane of the rotating bracket (14) is perpendicular to the length direction of the pipe (11), the thickness of any filter element (12) is equal to the width of the slit (112), and when the rotating bracket (14) rotates, it drives several filter elements (12) to be inserted into the slit (112) in sequence.

2. The glue filtering device according to claim 1, characterized in that, The glue filtration device (1) further includes a first semiconductor refrigeration chip (15) and a second semiconductor refrigeration chip (16). The first semiconductor refrigeration chip (15) is attached to the pipe (11) between the valve (111) and the slit (112), and the second semiconductor refrigeration chip (16) is attached to the pipe (11) between the slit (112) and the outlet (114) of the pipe (11).

3. The glue filtering device according to claim 1, characterized in that, The glue filtering device (1) also includes a rocker arm (17), which is fixedly connected to the rotating bracket (14).

4. The glue filtering device according to claim 3, characterized in that, The glue filtering device (1) also includes a motor (18), which is coaxially and fixedly connected to the rocker arm (17).

5. The glue filtering device according to claim 1, characterized in that, The filter unit (12) also includes two sealing rings (123), and a first annular groove (1221) is provided on the outer side of any of the clamping frames (122), the first annular groove (1221) being used to accommodate the sealing rings (123).

6. The glue filtering device according to claim 5, characterized in that, Of the two clamping frames (122), one clamping frame (122) has an annular protrusion (1222) on its inner side, and the other clamping frame (122) has a second annular groove (1223) on its inner side. When the two clamping frames (122) are assembled, the annular protrusion (1222) presses the edge of the filter screen (121) into the second annular groove (1223).

7. The glue filtering device according to claim 1, characterized in that, The filter unit (12) also includes a confidential screw (124), and any of the clamping frames (122) has a threaded hole (1224). The confidential screw (124) fixes the filter unit (12) to the support rod (141) through the threaded hole (1224).

8. The glue filtering device according to claim 1, characterized in that, The fixed bracket (13) is provided with a bearing (131), and the rotating bracket (14) is rotatably connected to the fixed bracket (13) through the bearing (131).

9. The glue filtering device according to claim 1, characterized in that, The glue filtration device (1) also includes a funnel (19) installed at the inlet (113) of the pipe (11).

10. The glue filtering device according to claim 9, characterized in that, The glue filtering device (1) also includes a clamp (20) and a support leg (21). The clamp (20) is fastened to the side of the funnel (19), and the support leg (21) is fixedly connected to the clamp (20).

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