A water-based polyurethane filtration device

Abstract

This utility model relates to the technical field of waterborne polyurethane production equipment, and discloses a waterborne polyurethane filtration device, including a filter collection tank and a discharge pipe. The filter collection tank is located below the discharge pipe, and a filter bag is provided at the discharge end of the discharge pipe. Multiple movable slots are respectively opened on the outer wall of the discharge pipe, and an upper cylinder cover is movably installed in each of the multiple movable slots. A support column is fixedly installed inside the filter collection tank. In this utility model, during the squeezing process of the filter bag, the waterborne polyurethane splashed from the filter bag is blocked by the upper cylinder cover, allowing the squeezed waterborne polyurethane to flow into the lower filter collection tank through the gap between the upper cylinder cover and the lower semi-circular cover. The waterborne polyurethane is centrally collected and stored through the filter collection tank. The method of filtering and collecting waterborne polyurethane in this invention can automatically achieve the filtration and collection of waterborne polyurethane without manual operation, thus saving labor.

Description

Technical Field

[0001] This utility model relates to the technical field of waterborne polyurethane production equipment, and in particular to a waterborne polyurethane filtration device. Background Technology

[0002] Polyurethane resin is a polymer material with high strength, tear resistance, and wear resistance. The raw material polyether and isophorone diisocyanate are mixed evenly and then reacted in a reactor with an appropriate amount of hydrophilic chain extender, chain extender diethylene glycol, appropriate amount of acetone and catalyst. After the reaction is completed, the waterborne polyurethane product will contain a certain amount of waterborne polyurethane particles, skin, etc. To obtain a uniform and stable product, filtration is necessary.

[0003] An existing waterborne polyurethane filtration device (authorization announcement number: CN212166622U) involves hanging the extruder ring on the extruder hook, placing the filter bag between two perforated extrusion plates, opening the discharge valve at the front end of the discharge pipe, and allowing the waterborne polyurethane to flow into the filter bag under gravity. Holding the two extrusion handles with both hands, the device repeatedly opens and closes the filter bag. With each repeated opening and closing motion, the perforated extrusion plates repeatedly squeeze the filter bag, thus achieving the filtration of the waterborne polyurethane.

[0004] However, this type of waterborne polyurethane filter has some shortcomings in actual use: when the two squeeze handles are squeezed by both hands, the two perforated pressure plates come close to each other and squeeze the filter bag. During the squeezing process, the waterborne polyurethane is prone to splashing out from the holes on the two perforated pressure plates, making it difficult to collect the splashed waterborne polyurethane; at the same time, this type of filter requires manual repeated squeezing operations, which is very laborious; therefore, we have proposed this utility model to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a water-based polyurethane filtration device to solve the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A water-based polyurethane filtration device includes a filter collection tank and a discharge pipe. The filter collection tank is located below the discharge pipe. A filter bag is installed at the discharge end of the discharge pipe. Multiple movable slots are formed on the outer side wall of the discharge pipe, and an upper cylinder cover is movably installed in each of the multiple movable slots. A support column is fixedly installed inside the filter collection tank. An inner cavity is formed inside the support column, and an electric push rod is fixedly installed in the inner cavity. The output end of the electric push rod extends through the support column and is fixedly installed with a lower semi-circular cover. Guide ramps are fixedly installed on both sides of the lower semi-circular cover. Two side frames are fixedly installed at the top of the filter collection tank. A side groove is formed on the side of the two side frames that are close to each other. A first straight rack is movably installed in each of the two side grooves. A transmission mechanism is provided between the upper cylinder cover and the two first straight racks.

[0007] Preferably, the upper cylindrical cover is located directly above the filter bag, and the upper cylindrical cover is provided with a compression conical groove adapted to the filter bag; this facilitates the upper cylindrical cover to move down and fit onto the filter bag, and facilitates the compression of the filter bag in conjunction with the lower semi-circular cover.

[0008] Preferably, the lower semicircular cover is located directly below the filter bag, and the lower semicircular cover is provided with a semicircular extrusion head adapted to the filter bag; the water-based polyurethane particles inside the filter bag are extruded upward through the lower semicircular cover.

[0009] Preferably, the transmission mechanism includes a second spur rack and gears. The second spur racks are fixedly installed on both sides of the upper cylindrical cover, and gears are rotatably installed on the inner walls of the two side frames. The corresponding gears mesh with the corresponding first and second spur racks, respectively. Under the action of the two sets of transmission mechanisms, the upper cylindrical cover and the lower semi-circular cover can be synchronously moved closer or further apart.

[0010] Preferably, the two second straight racks on the upper cylinder cover are movably mounted on the corresponding side frames, and the outer side wall of the upper cylinder cover is movably fitted between the two side frames; this facilitates the upper cylinder cover to move up and down between the two side frames.

[0011] Preferably, the bottom of the filter collection tank is provided with a liquid outlet pipe, and a valve is provided on the liquid outlet pipe; by opening the valve, the water-based polyurethane can be discharged into the filter collection tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This water-based polyurethane filtration device, by activating an electric push rod, pushes the lower semi-circular cover upwards. Simultaneously, the two first straight racks move upwards. Under the action of two sets of transmission mechanisms, the upper cylindrical cover and the lower semi-circular cover move closer to each other synchronously, squeezing the filter bag. During the squeezing process, the water-based polyurethane splashed from the filter bag is blocked by the upper cylindrical cover, allowing the squeezed water-based polyurethane to flow into the filter collection tank below through the gap between the upper cylindrical cover and the lower semi-circular cover. The filter collection tank centrally collects and stores the water-based polyurethane. The water-based polyurethane filtration and collection method in this case can automatically achieve the filtration and collection of water-based polyurethane without manual operation, which is more labor-saving. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure in plan view of this utility model; Figure 3 This is a side sectional view of the structure of this utility model; Figure 4 This is a structural schematic diagram of the extruded cross-section of the filter bag of this utility model.

[0014] In the diagram: 1. Filter collection tank; 2. Discharge pipe; 3. Filter bag; 4. Movable trough; 5. Upper cylinder cover; 6. Support column frame; 7. Inner cavity; 8. Electric push rod; 9. Lower semi-circular cover; 10. Guide slope plate; 11. Side frame; 12. Side trough; 13. First straight rack; 14. Second straight rack; 15. Gear; 16. Liquid outlet pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example: Refer to Figure 1-4A water-based polyurethane filtration device includes a filter collection tank 1 and a discharge pipe 2. The filter collection tank 1 is located below the discharge pipe 2. A filter bag 3 is provided at the discharge end of the discharge pipe 2. Multiple movable grooves 4 are respectively opened on the outer side wall of the discharge pipe 2. An upper cylinder cover 5 is movably installed in the multiple movable grooves 4. A support column 6 is fixedly installed inside the filter collection tank 1. An inner cavity 7 is opened inside the support column 6. An electric push rod 8 is fixedly installed in the inner cavity 7. The output end of the electric push rod 8 extends through the support column 6 and is fixedly installed with a lower semi-circular cover 9. Guide ramps 10 are fixedly installed on both sides of the lower semi-circular cover 9. Two side frames 11 are fixedly installed at the top of the filter collection tank 1. A side groove 12 is opened on the side of the two side frames 11 that is close to each other. A first straight rack 13 is movably installed in each of the two side grooves 12. A transmission mechanism is provided between the upper cylinder cover 5 and the two first straight racks 13.

[0017] Furthermore, the upper cylinder cover 5 is located directly above the filter bag 3, and the upper cylinder cover 5 is provided with a compression conical groove adapted to the filter bag 3; this facilitates the upper cylinder cover 5 to move down and fit onto the filter bag 3, and facilitates the compression of the filter bag 3 in conjunction with the lower semi-circular cover 9.

[0018] Furthermore, the lower semicircular cover 9 is located directly below the filter bag 3, and the lower semicircular cover 9 is provided with a semicircular extrusion head adapted to the filter bag 3; the water-based polyurethane particles inside the filter bag 3 are extruded upward through the lower semicircular cover 9.

[0019] Furthermore, the transmission mechanism includes a second spur rack 14 and a gear 15. The second spur rack 14 is fixedly installed on both sides of the upper cylindrical cover 5, and the gear 15 is rotatably installed on the inner walls of the two side frames 11. The corresponding gear 15 meshes with the corresponding first spur rack 13 and second spur rack 14 respectively. Under the action of the two sets of transmission mechanisms, the upper cylindrical cover 5 and the lower semi-circular cover 9 can be synchronously moved closer or further apart.

[0020] Specifically, the two second straight racks 14 on the upper cylinder cover 5 are movably mounted on the corresponding side frames 11, and the outer side wall of the upper cylinder cover 5 is movably attached between the two side frames 11; this facilitates the upper cylinder cover 5 to move up and down between the two side frames 11.

[0021] Furthermore, a liquid outlet pipe 16 is provided at the bottom of the filter collection tank 1, and a valve is provided on the liquid outlet pipe 16; by opening the valve, the water-based polyurethane can be discharged into the filter collection tank 1.

[0022] In use: During the filtration process of waterborne polyurethane, the waterborne polyurethane flows into the filter bag 3 through the discharge pipe 2 under the action of gravity. The filter bag 3 filters the particles in the waterborne polyurethane. The filtered waterborne polyurethane flows out of the filter bag 3 and falls directly into the filter collection tank 1 below. When it is necessary to squeeze the particles in the filter bag 3, the electric push rod 8 is activated to push the lower semi-circular cover 9 upward. At the same time, the two first straight racks 13 move upward. Under the meshing action of the two gears 15, the two second straight racks 14 and the upper cylinder cover are driven synchronously. 5. Simultaneously move downwards, causing the upper cylinder cover 5 and the lower semi-circular cover 9 to move closer to each other, thereby squeezing the filter bag 3. During the squeezing process, the water-based polyurethane splashed on the filter bag 3 is blocked by the upper cylinder cover 5, allowing the squeezed water-based polyurethane to flow into the filter collection tank 1 below through the gap between the upper cylinder cover 5 and the lower semi-circular cover 9. The water-based polyurethane is collected and stored in the filter collection tank 1. The method of filtering and collecting water-based polyurethane in this case can automatically achieve the filtration and collection of water-based polyurethane without manual operation, which is more labor-saving.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An aqueous polyurethane filtering device comprising a filtering collection tank (1) and a discharge pipe (2), characterized in that, The filter collection tank (1) is located below the discharge pipe (2). A filter bag (3) is provided at the discharge end of the discharge pipe (2). Multiple movable slots (4) are respectively opened on the outer side wall of the discharge pipe (2). An upper cylinder cover (5) is movably installed in the multiple movable slots (4). A support column (6) is fixedly installed inside the filter collection tank (1). An inner cavity (7) is opened inside the support column (6). An electric push rod (8) is fixedly installed inside the inner cavity (7). The output end extends through the support column (6) and is fixedly installed with a lower semicircular cover (9). Both sides of the lower semicircular cover (9) are fixedly installed with flow guide ramps (10). The top of the filter collection tank (1) is fixedly installed with two side frames (11). The two side frames (11) are provided with side grooves (12) on the side that are close to each other. The two side grooves (12) are movably installed with first straight racks (13). A transmission mechanism is provided between the upper cylinder cover (5) and the two first straight racks (13).

2. The waterborne polyurethane filtering device according to claim 1, wherein, The upper cylinder cover (5) is located directly above the filter bag (3), and the upper cylinder cover (5) is provided with a compression conical groove adapted to the filter bag (3).

3. The waterborne polyurethane filtering device according to claim 1, wherein, The lower semicircular cover (9) is located directly below the filter bag (3), and the lower semicircular cover (9) is provided with a semicircular extrusion head adapted to the filter bag (3).

4. The waterborne polyurethane filtering device of claim 1, wherein, The transmission mechanism includes a second spur rack (14) and a gear (15). The second spur rack (14) is fixedly installed on both sides of the upper cylinder cover (5), and the gear (15) is rotatably installed on the inner walls of the two side frames (11). The corresponding gear (15) meshes with the corresponding first spur rack (13) and second spur rack (14).

5. The waterborne polyurethane filtration device of claim 4, wherein, The two second straight racks (14) on the upper cylinder cover (5) are respectively movably mounted on the corresponding side frame (11), and the outer side wall of the upper cylinder cover (5) is movably attached between the two side frames (11).

6. The waterborne polyurethane filtration device of claim 1, wherein, The bottom of the filter collection tank (1) is provided with a liquid outlet pipe (16), and a valve is provided on the liquid outlet pipe (16).

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