Polyurethane foam production filtering device

Abstract

The utility model provides a polyurethane foam production filtering device, which relates to the technical field of polyurethane foam production, and comprises a filtering tank, a filter tank, a water inlet, a water outlet, a water inlet and a water outlet, a slag discharging opening is formed in the right side wall of the filtering tank and is positioned between the inlet and the filtering plate; the filter plate is positioned between the inlet and the outlet, and the side surface of the filter plate is in sliding fit with the inner wall of the filter tank; the upper side of the filter plate is in a shape with high middle and low edge; the lifting and rotating mechanism is connected with the lower side of the filter plate and is used for lifting and rotating the filter plate; the residue removing mechanism is arranged at the residue discharging opening and used for removing impurities left on the filter plate when the filter plate moves upwards to the position close to the residue discharging opening; the liquid leakage plate and the heating piece are arranged in the inlet, and the heating piece is located above the liquid leakage plate. The device is suitable for solid / liquid raw materials, impurities are not accumulated in the middle area of the upper side of the filter plate, and the device further has a heating function and is richer in function and higher in adaptability.

Description

Technical Field

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

[0002] Polyurethane foam is a high-molecular polymer made primarily from isocyanate and polyether, mixed with various additives such as foaming agents, catalysts, and flame retardants using specialized equipment, and then foamed on-site through high-pressure spraying. The production of polyurethane foam requires a foaming machine, and the raw materials must be filtered before entering the machine to reduce impurities and improve product quality.

[0003] To reduce impurities in raw materials, patent application number 202323355958.6 provides a solution that filters impurities from raw materials through filter holes on a circular plate. A rotating scraper discharges the impurities filtered out by the circular plate from the feed chute. The falling impurities and a small portion of the raw materials are picked up through hole two. The impurities fall into the collection frame along the feed inclined plate. After filtration, the collection frame is lifted to clean the impurities. The filtered raw materials are stored in a tank.

[0004] The above solution has the following drawbacks:

[0005] 1. Due to the limitations of the equipment structure, the feeding trough cannot cover the central area of ​​the circular plate, and the scraper cannot sweep the impurities in the central area off the feeding trough, resulting in impurities remaining in the central area.

[0006] 2. This solution is suitable for filtering impurities in solid raw materials, but it is not very suitable for filtering impurities in liquid raw materials (some solid raw materials / auxiliaries need to be heated and melted into liquid before being added to the foaming machine in order to be evenly mixed with other raw materials / auxiliaries); if the liquid falls onto the circular plate, because the liquid has higher fluidity than the solid, the liquid is easy to flow to the feed trough and flow directly down from the feed trough, resulting in the impurities in this part of the liquid not being filtered by the filter holes on the circular plate.

[0007] 3. It lacks the function of heating solid raw materials / additives to melt them into a liquid state, and its function is limited. Utility Model Content

[0008] In view of the above situation, the present invention provides a polyurethane foam production filtration device, which aims to solve the defects pointed out in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] This utility model provides a filtration device for polyurethane foam production, comprising:

[0011] The filter tank has an inlet on the top left and an outlet at the bottom; the right side wall of the filter tank has a slag discharge port, which is located between the inlet and the filter plate.

[0012] The filter plate is located between the inlet and outlet, and its sides slide against the inner wall of the filter tank; the upper side of the filter plate is high in the middle and low at the edges.

[0013] The lifting and rotating mechanism is connected to the lower side of the filter plate and is used to lift and rotate the filter plate.

[0014] The slag removal mechanism is located at the slag discharge port and is used to remove impurities left on the filter plate when the filter plate moves to the vicinity of the slag discharge port.

[0015] It also includes a drain plate and a heating element installed inside the inlet, with the heating element located above the drain plate.

[0016] In some embodiments of this utility model, the lifting and rotating mechanism includes a drive rod, the lower end of which movably passes through the top of the filter tank and is connected to the upper center of the filter plate.

[0017] In some embodiments of this utility model, the lifting and rotating mechanism further includes:

[0018] The lifting plate is located above the filter tank. The lifting plate is rotatably connected to the upper part of the drive rod and can drive the drive rod to move longitudinally.

[0019] The toothed plate is connected at its lower end to the top of the filter tank;

[0020] Gears mesh with toothed plates;

[0021] The worm gear is horizontally positioned and rotatably connected to the lifting plate, with gears mounted on the worm gear.

[0022] The worm gear meshes with the worm and is mounted on the upper part of the drive rod.

[0023] In some embodiments of this utility model, the lifting plate is driven by a cylinder.

[0024] In some embodiments of this utility model, the slag removal mechanism includes a scraper connected to the filter tank. The scraper extends into the filter tank through the slag discharge port, and the lower side of the scraper can fit against the upper side of the filter plate.

[0025] In some embodiments of this utility model, the scraper is fastened to the slag discharge port by bolts.

[0026] In some embodiments of this invention, the lower side of the filter plate is horizontal.

[0027] In some embodiments of this invention, the bottom inner side of the filter tank is inclined towards the outlet.

[0028] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0029] 1. This application applies to solid / liquid raw materials. The inlet of the filter tank is connected to the inlet of the foaming machine; after the solid / liquid raw material enters the filter tank through the inlet, it falls onto the filter plate. Large particles of impurities remain on the upper side of the filter plate, while the solid / liquid raw material falls to the bottom of the filter plate. After the valve is opened, the filtered solid / liquid raw material enters the foaming machine through the outlet of the filter tank to improve the quality of the product.

[0030] 2. Because the upper side of the filter plate is shaped with a high center and low edges, impurities in the solid / liquid raw materials will roll to the edge of the filter plate under their own weight, thus preventing impurities from accumulating in the upper middle area of ​​the filter plate.

[0031] 3. The lifting and rotating mechanism allows for easy adjustment after pausing the introduction of solid / liquid raw materials into the filter tank. The filter plate is then moved upwards to align its edge with the discharge port, causing impurities to accumulate at the edges, making cleaning easier at the discharge port. Rotating the filter plate allows for cleaning of multiple areas. Furthermore, rotating the filter plate while moving it upwards throws impurities to its edges, ensuring no impurities accumulate in the upper central area of ​​the filter plate.

[0032] 4. After the solid raw material enters the filter tank inlet, turn on the heating element. The heating element melts the solid raw material into a liquid, which then flows through the drain plate and onto the filter plate. The drain plate and heating element combine to give the polyurethane foam production filtration device a heating function, making it more versatile and adaptable. Furthermore, when processing solid raw materials, the drain plate acts as the primary filter, while the filter plate acts as the secondary filter, resulting in better filtration through this dual filtration process.

[0033] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of a filtration device for polyurethane foam production. Figure 1 The dashed line is used to indicate the upper limit of the spill prevention position for solid / liquid raw materials;

[0036] Figure 2 This is a schematic diagram of the scraper's structure; Figure 2 The middle arrow indicates the direction of rotation of the filter plate.

[0037] icon:

[0038] 1-Filter tank, 11-Inlet, 12-Outlet, 13-Slag discharge port

[0039] 2-Filter plate,

[0040] 31-Drive lever,

[0041] 41-Scraper, 42-Mounting plate

[0042] 51-Lifting plate, 52-Gear plate, 53-Gear, 54-Worm, 55-Worm wheel, 56-Cylinder

[0043] 61-Drain plate, 62-Heating element. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0045] In the description of the embodiments of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "rear", "left", "right", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0046] Furthermore, the term "multiple" means two or more, unless otherwise explicitly specified.

[0047] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" 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 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 embodiment of the invention according to the specific circumstances.

[0048] The embodiments of this utility model will be described in detail below.

[0049] Example 1

[0050] See Figures 1-2 This embodiment provides a polyurethane foam production filtration device, including a filter tank 1, a filter plate 2, a lifting and rotating mechanism, and a slag removal mechanism.

[0051] The filter tank 1 has an inlet 11 on the top left and an outlet 12 at the bottom, with an openable and closable valve on the outlet 12; the bottom inner side of the filter tank 1 is inclined towards the outlet 12. The filter tank 1 has a slag discharge port 13 on the right side wall, which is located between the inlet 11 and the filter plate 2. In this embodiment, the slag discharge port 13 is located near the top of the filter tank 1.

[0052] The filter plate 2 is located between the inlet 11 and the outlet 12 of the filter tank 1. The side of the filter plate 2 is slidably fitted with the inner wall of the filter tank 1. Multiple filter holes are distributed on the filter plate 2. The upper side of the filter plate 2 is high in the middle and low at the edge. In this embodiment, the lower side of the filter plate 2 is horizontal. The thickness of the filter plate 2 decreases from the middle to the edge.

[0053] The lifting and rotating mechanism is connected to the lower side of the filter plate 2 and is used to lift and rotate the filter plate 2.

[0054] The slag cleaning mechanism is located at the slag discharge port 13 and is used to clean the impurities left on the filter plate 2 when the filter plate 2 moves to the vicinity of the slag discharge port 13.

[0055] This embodiment is applicable to solid / liquid raw materials. The outlet 12 of the filter tank 1 is connected to the inlet of the foaming machine. After the solid / liquid raw material enters the filter tank 1 through the inlet 11, it falls onto the filter plate 2. Large particles of impurities remain on the upper side of the filter plate 2, and the solid / liquid raw material falls to the bottom of the filter plate 2. After the valve is opened, the filtered solid / liquid raw material enters the foaming machine through the outlet 12 of the filter tank 1 to improve the quality of the product.

[0056] Because the upper side of filter plate 2 is shaped with a high center and low edges, impurities in the solid / liquid raw materials will roll to the edge of filter plate 2 under their own weight, so that impurities do not accumulate in the upper middle area of ​​filter plate 2.

[0057] The lifting and rotating mechanism allows for easy adjustment of the filter plate 2 after the introduction of solid / liquid raw materials into the filter tank 1. The filter plate 2 is then moved upwards to align its edge with the discharge port 13, causing impurities to accumulate at the edge of the filter plate 2, making it easier to clean these impurities at the discharge port 13. Rotating the filter plate 2 allows for cleaning of multiple areas. Furthermore, rotating the filter plate 2 while it is being moved upwards throws impurities to its edge, ensuring that no impurities accumulate in the upper central area of ​​the filter plate 2.

[0058] The lifting and rotating mechanism includes a drive rod 31 that can be lifted and rotated under the drive of an external power source. The lower end of the drive rod 31 movably passes through the fixed part of the filter tank 1 and is connected to the upper center of the filter plate 2. The form of the power source is not limited.

[0059] The slag cleaning mechanism includes a scraper 41 connected to the filter tank 1. The scraper 41 extends into the filter tank 1 through the slag discharge port 13. The lower side shape of the scraper 41 matches the upper side shape of the filter plate 2. The lower side of the scraper 41 can fit against the upper side of the filter plate 2. In this way, after the filter plate 2 is moved up to align the edge of the filter plate 2 with the slag discharge port 13, the drive rod 31 and the filter plate 2 are rotated. The impurities at the edge of the filter plate 2 can be cleaned by the stationary scraper 41 and swept to the outside of the slag discharge port 13.

[0060] The scraper 41 is installed in the following manner: the scraper 41 has a mounting plate 42, which is fastened to the slag discharge port 13 by bolts.

[0061] Example 2

[0062] In this embodiment, the lifting and rotation of the drive rod 31 are driven by the same power source.

[0063] See Figures 1-2 The lifting and rotating mechanism also includes a lifting plate 51, a toothed plate 52, a gear 53, a worm 54, and a worm wheel 55.

[0064] The lifting plate 51 is positioned above the filter tank 1. The lifting plate 51 can move longitudinally under the drive of a power source such as the cylinder 56. The lifting plate 51 is rotatably connected to the upper part of the drive rod 31 and can drive the drive rod 31 to move longitudinally.

[0065] The lower end of the toothed plate 52 is connected to the top of the filter tank 1.

[0066] Gear 53 meshes with toothed plate 52.

[0067] The worm gear 54 is arranged horizontally and rotatably connected to the lifting plate 51, and the gear 53 is installed on the worm gear 54.

[0068] The worm gear 55 meshes with the worm 54, and the worm gear 55 is mounted on the upper part of the drive rod 31.

[0069] When the lifting plate 51 is moved upward by the power source such as the cylinder 56, the lifting plate 51 drives the drive rod 31, worm 54 and gear 53 to move upward synchronously. Under the action of the gear plate 52, the gear 53 drives the worm 54 to rotate, and the worm 54 then drives the worm wheel 55 and the drive rod 31 to rotate. Thus, the lifting and rotation of the drive rod 31 are realized through the same power source.

[0070] Example 3

[0071] In this embodiment, the polyurethane foam production filtration device also has a heating function.

[0072] See Figures 1-2 The polyurethane foam production filtration device also includes a drain plate 61 and heating elements 62 disposed in the inlet 11 of the filter tank 1. Multiple heating elements 62 are evenly distributed above the drain plate 61.

[0073] After the solid raw material enters the inlet 11 of the filter tank 1, the switch of the heating element 62 is turned on. The heating element 62 melts the solid raw material into a liquid, which then flows through the drain plate 61 and onto the filter plate 2. The combination of the drain plate 61 and the heating element 62 gives the polyurethane foam production filtration device a heating function, making it more versatile and adaptable. Furthermore, when processing solid raw materials, the drain plate 61 acts as the primary filter, and the filter plate 2 acts as the secondary filter, resulting in better filtration through this dual filtration process.

[0074] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. For those skilled in the art, this utility model can have various modifications and variations. Without conflict, the embodiments and features described in this application can be arbitrarily combined with each other. 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.

Claims

1. A filtration device for polyurethane foam production, characterized in that, include: The filter tank has an inlet on the top left and an outlet at the bottom. The filter tank has a slag discharge port on its right side wall, which is located between the inlet and the filter plate; A filter plate is located between the inlet and the outlet, and the side of the filter plate slides in fit with the inner wall of the filter tank; the upper side of the filter plate is high in the middle and low at the edges. A lifting and rotating mechanism is connected to the lower side of the filter plate and is used to lift and rotate the filter plate. A slag cleaning mechanism is provided at the slag discharge port and is used to clean the impurities left on the filter plate when the filter plate moves to the vicinity of the slag discharge port; It also includes a drain plate and a heating element disposed within the inlet, the heating element being located above the drain plate.

2. The polyurethane foam production filtration device according to claim 1, characterized in that, The lifting and rotating mechanism includes a drive rod, the lower end of which movably passes through the top of the filter tank and is connected to the upper center of the filter plate.

3. The polyurethane foam production filtration device according to claim 2, characterized in that, The lifting and rotating mechanism also includes: A lifting plate is disposed above the filter tank. The lifting plate is rotatably connected to the upper part of the drive rod and can drive the drive rod to move longitudinally. A toothed plate, the lower end of which is connected to the top of the filter tank; The gear meshes with the toothed plate; A worm gear is arranged horizontally and rotatably connected to the lifting plate, and the gear is mounted on the worm gear; A worm gear meshes with the worm and is mounted on the upper part of the drive rod.

4. The polyurethane foam production filtration device according to claim 3, characterized in that, The lifting plate is driven by a cylinder.

5. The polyurethane foam production filtration apparatus according to any one of claims 1 to 4, characterized in that, The slag removal mechanism includes a scraper connected to the filter tank. The scraper extends into the filter tank through the slag discharge port, and the lower side of the scraper can fit against the upper side of the filter plate.

6. The polyurethane foam production filtration device according to claim 5, characterized in that, The scraper is fastened to the slag discharge port by bolts.

7. The polyurethane foam production filtration device according to claim 1, characterized in that, The lower side of the filter plate is horizontal.

8. The polyurethane foam production filtration device according to claim 1, characterized in that, The bottom inner side of the filter tank slopes towards the outlet.

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