Filter screen for polyurethane casting machine

Abstract

The utility model relates to the technical field of polyurethane production equipment, in particular to a filter screen for a polyurethane casting machine, the filter screen comprises a barrel and a connecting lug plate, the connecting lug plate is arranged at a barrel opening of the barrel, and the barrel and the connecting lug plate are integrally formed; a plurality of communicating holes are formed in the cylinder bottom wall and the cylinder side wall of the cylinder body; a mounting convex ring is arranged on the inner circumferential wall of the raw material tank, the connecting lug plate is used for being detachably connected with the mounting convex ring, and a barrel opening of the barrel body faces a discharging pipeline of the raw material tank. According to the device, the filter screen is arranged above the discharging pipe opening of the raw material tank, and raw material scaling substances and other impurities in the raw materials are filtered through the filter screen; therefore, the condition that the discharging pipeline is blocked by raw material scales and other impurities is reduced, the stability of raw material discharging is improved, and the quality of polyurethane products is improved. Meanwhile, the filter screen is detachably connected with the raw material tank through a bolt or a screw, so that the filter screen can be conveniently detached and cleaned by a worker, and the filter screen can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of polyurethane production equipment, and in particular to a filter screen for a polyurethane casting machine. BACKGROUND

[0002] The polyurethane casting machine is a device specially used for producing polyurethane products, which can mix two liquid raw materials, namely, polyol (usually referred to as component A) and polyisocyanate (usually referred to as component B), according to a specific ratio and rapidly cast into a mold under high or low pressure. In the mold, the two components chemically react to form a polyurethane foam or elastomer.

[0003] The polyurethane casting machine has two raw material tanks for containing the two liquid raw materials. When the two liquid raw materials are in the raw material tanks, fouling occurs, thereby generating raw material fouling objects with a large diameter. When the polyurethane casting machine casts the liquid raw materials into the mold, the large-particle raw material fouling objects or other impurities in the liquid raw materials can block the discharge pipeline of the raw material tank, thereby affecting the stability of the raw material discharge flow of the polyurethane casting machine and the quality of the final polyurethane product. CONTENT OF THE UTILITY MODEL

[0004] In order to reduce the influence of the raw material fouling objects in the raw material tank and improve the quality of the final polyurethane product, the application provides a filter screen for a polyurethane casting machine.

[0005] The application provides a filter screen for a polyurethane casting machine, which adopts the following technical scheme:

[0006] The filter screen for the polyurethane casting machine comprises a cylinder body and a connecting lug plate, the connecting lug plate is arranged at the cylinder opening of the cylinder body, and the cylinder body and the connecting lug plate are integrally formed; a plurality of communication holes are arranged in the cylinder bottom wall and the cylinder side wall of the cylinder body, and the included angle between the cylinder side wall and the cylinder bottom wall is an obtuse angle; a plurality of first mounting holes are arranged at intervals in the connecting lug plate, and the first mounting holes are used for penetrating bolts or screws; the filter screen is arranged in the raw material tank of the polyurethane casting machine, the inner circumferential wall of the raw material tank is provided with a mounting convex ring, the connecting lug plate is used for being threadedly connected with the mounting convex ring, and the cylinder opening of the cylinder body is arranged towards the discharge pipeline of the raw material tank.

[0007] By arranging the filter screen above the discharge pipe opening of the raw material tank, the filter screen is used for filtering the raw material fouling objects and other impurities in the raw materials, thereby reducing the blocking of the discharge pipeline by the raw material fouling objects and other impurities, improving the stability of the raw material discharge, and improving the quality of the polyurethane product.

[0008] Meanwhile, the filter screen and the raw material tank are detachably connected through bolts or screws, so that the staff can disassemble and clean the filter screen, and the filter screen can be repeatedly used.

[0009] Optionally, the scraping assembly comprises a connecting rod, a scraping rod and a propeller; the barrel bottom wall is provided with a second mounting hole for the connecting rod to pass through, the scraping rod and the propeller are fixed at both ends of the connecting rod, and the propeller is arranged inside the barrel body, and the scraping rod is used to abut against the barrel bottom wall.

[0010] By adopting the above technical scheme, the raw materials flowing through the propeller drive the hanging rod to rotate, so that the hanging rod rotates in close contact with the barrel bottom wall; thus, when the raw material scale or other impurities block the communication holes on the barrel wall, the scraper can scrape the raw material scale, other impurities and the like to the connecting lug plate on the outer periphery of the barrel, thereby ensuring the flowability of the raw materials.

[0011] Optionally, the propeller comprises two oppositely arranged blades, and the blades are arranged perpendicularly to the scraping rod.

[0012] By adopting the above technical scheme, the blades are arranged perpendicularly to the hanging rod, which can not only ensure the rotation effect of the scraping assembly, but also reduce the resistance of the scraping assembly to the flow of raw materials, thereby improving the flowability of the raw materials.

[0013] Optionally, the ring-shaped baffle is arranged on the side of the connecting lug plate away from the barrel, and the ring-shaped baffle is integrally formed with the barrel.

[0014] By adopting the above technical scheme, the ring-shaped baffle, the connecting lug plate and the barrel side wall form a containing ring groove, and the containing ring groove is used to contain the raw material scale; thus, after the filter screen is separated from the raw material tank, it is convenient for the worker to clean the accumulated raw material scale and other impurities.

[0015] Optionally, the ring-shaped protrusions are horizontally arranged, the ring-shaped protrusions are arranged on the side of the ring-shaped baffle close to the barrel, and the ring-shaped protrusions are arranged on the side of the ring-shaped baffle away from the connecting lug plate, and the ring-shaped protrusions are integrally formed with the ring-shaped baffle.

[0016] By adopting the above technical scheme, the ring-shaped protrusions are arranged on the ring-shaped baffle, which provides a force point for the worker, thereby facilitating the worker to take out the filter screen from the raw material tank.

[0017] Optionally, the included angle between the barrel side wall and the barrel bottom wall is 135°.

[0018] By adopting the above technical scheme, the included angle between the barrel side wall and the barrel bottom wall is 135°, thereby facilitating the raw material scale to fall off the barrel.

[0019] Optionally, the diameter of the communication hole is 5 mm.

[0020] By adopting the technical scheme, the diameter of the communication hole is 5mm, which can ensure the interception effect of the filter screen on the raw material scale and improve the flowability of the raw material through the filter screen.

[0021] Optionally, the lifting ring is fixed to the side of the barrel bottom wall away from the connecting lug plate, and the lifting ring is welded and fixed to the barrel bottom wall.

[0022] By adopting the technical scheme, the lifting ring provides a force point for the worker, thereby facilitating the worker to take out the filter screen from the raw material tank.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By arranging the filter screen above the discharge pipe of the raw material tank, the filter screen filters the raw material scale and other impurities in the raw material, thereby reducing the blockage of the discharge pipe by the raw material scale and other impurities, improving the stability of the raw material discharge, and improving the quality of the polyurethane product; at the same time, the filter screen is detachably connected to the raw material tank by bolts or screws, so that the worker can disassemble and clean the filter screen, and the filter screen can be reused;

[0025] 2. The flowing raw material drives the hanging rod to rotate by the propeller, so that the hanging rod rotates in close contact with the barrel bottom wall; thereby when the raw material scale or other impurities block the communication hole on the barrel wall, the scraper can scrape the raw material scale, other impurities, etc. to the connecting lug plate on the outer periphery of the barrel, thereby ensuring the flowability of the raw material;

[0026] 3. The annular baffle and the connecting lug plate enclose the accommodating annular groove with the barrel side wall, and the accommodating annular groove is used to accommodate the raw material scale; thereby after separating the filter screen from the raw material tank, the worker can clean the accumulated raw material scale and other impurities. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the filter screen structure in embodiment 1.

[0028] Figure 2 is a sectional view of the filter screen structure in embodiment 1.

[0029] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0030] Figure 4 is a schematic view of the filter screen structure in embodiment 2.

[0031] Figure 5 is a sectional view of the filter screen structure in embodiment 2.

[0032] Figure 6 isFigure 5 Enlarged view at B.

[0033] Figure 7 is a schematic view embodying the filter screen structure in embodiment 3.

[0034] Figure 8 is a sectional view embodying the filter screen structure in embodiment 4.

[0035] Figure 9 is an exploded view embodying the screeding assembly structure in embodiment 4.

[0036] Reference signs: 1, barrel; 11, barrel bottom wall; 12, barrel side wall; 121, second mounting hole; 13, communication hole; 2, connecting lug; 21, first mounting hole; 3, annular baffle; 4, annular protrusion; 5, accommodating annular groove; 6, screeding assembly; 61, connecting rod; 62, screed rod; 63, propeller; 7, lifting ring; 8, raw material tank; 81, mounting protruding ring; 9, discharge pipeline. DETAILED DESCRIPTION

[0037] The application is further described in detail below with reference to the accompanying drawings. Figure 1 -9 to make further detailed description of the present application.

[0038] The embodiment of the present application discloses a filter screen for polyurethane casting machine. Referring to Figure 1 and Figure 2 , the filter screen for polyurethane casting machine comprises a barrel 1 and a connecting lug 2, the connecting lug 2 is arranged at the barrel opening of the barrel 1, and the barrel 1 and the connecting lug 2 are integrally formed. In the embodiment, the barrel 1 and the connecting lug 2 are both made of stainless steel material.

[0039] Referring to Figure 2 and Figure 3 , the barrel bottom wall 11 and the barrel side wall 12 of the barrel 1 are both provided with a plurality of communication holes 13, and the included angle between the barrel side wall 12 and the barrel bottom wall 11 is obtuse, the connecting lug 2 is spaced apart and provided with a plurality of first mounting holes 21, and the first mounting holes 21 are used for screw or screw penetration.

[0040] Referring to Figure 2 and Figure 3 , in the embodiment, the included angle between the barrel side wall 12 and the barrel bottom wall 11 is 135°, so as to facilitate the raw material scale to fall off from the barrel 1. The diameter of the communication hole 13 is 5mm, which can improve the flowability of the raw material penetrating the filter screen while ensuring the interception effect of the filter screen on the raw material scale.

[0041] Referring to Figure 2 and Figure 3The filter screen is arranged inside the raw material tank 8 of the polyurethane pouring machine, the inner circumferential wall of the raw material tank 8 is provided with a mounting convex ring 81, the connecting lug plate 2 is arranged in threaded connection with the mounting convex ring 81, and the barrel mouth of the barrel body 1 is arranged towards the discharging pipeline 9 of the raw material tank 8. The connecting lug plate 2 and the mounting convex ring 81 can be fixedly connected by bolts or screws. In this embodiment, the connecting lug plate 2 and the mounting convex ring 81 are fixedly connected by screws.

[0042] The implementation principle of the filter screen for the polyurethane pouring machine is as follows:

[0043] Referring to Figure 1 and Figure 2 , the filter screen is arranged above the discharging pipe mouth of the raw material tank 8, and the filter screen is used to filter the raw material scale and other impurities in the raw material, so as to reduce the blockage of the discharging pipeline 9 by the raw material scale and other impurities, improve the stability of the raw material discharging, and improve the quality of the polyurethane product. At this time, the raw material scale and other impurities are collected in the groove formed by the side wall of the raw material tank 8, the connecting lug plate 2 and the barrel side wall 12, so as to facilitate the subsequent cleaning of the staff.

[0044] Referring to Figure 2 and Figure 3 , the filter screen and the raw material tank 8 are detachably connected by bolts, so as to facilitate the disassembly and cleaning of the filter screen by the staff, and the filter screen can be repeatedly used.

[0045] Embodiment 2

[0046] The difference between this embodiment 2 and the embodiment 1 is as follows:

[0047] Referring to Figures 4 to 6 , the filter screen further comprises a ring-shaped baffle 3 and a ring-shaped convex strip 4. The ring-shaped baffle 3 is arranged on the side of the connecting lug plate 2 away from the barrel body 1, and the ring-shaped baffle 3 is integrally formed with the barrel body 1. The ring-shaped baffle 3, the connecting lug plate 2 and the barrel side wall 12 form a containing ring groove 5, and the containing ring groove 5 is used to contain the raw material scale. The ring-shaped convex strip 4 is horizontally arranged, the ring-shaped convex strip 4 is arranged on the side of the ring-shaped baffle 3 close to the barrel body 1, and the ring-shaped convex strip 4 is arranged on the side of the ring-shaped baffle 3 away from the connecting lug plate 2. The ring-shaped convex strip 4 is integrally formed with the ring-shaped baffle 3.

[0048] The implementation principle of the filter screen for the polyurethane pouring machine is as follows:

[0049] Referring to Figures 4 to 6 , the ring-shaped baffle 3, the connecting lug plate 2 and the barrel side wall 12 form a containing ring groove 5, and the containing ring groove 5 is used to contain the raw material scale. After the filter screen is separated from the raw material tank 8, it is convenient for the staff to clean the accumulated raw material scale and other impurities.

[0050] And by setting the annular protrusions 4 on the annular baffle 3, the annular protrusions 4 provide a force point for the worker, thereby facilitating the worker to take out the filter screen from the raw material tank 8.

[0051] Embodiment 3

[0052] The difference between this embodiment 2 and embodiment 1 is that:

[0053] With reference to Figure 7 , the filter screen further comprises a lifting ring 7, which is fixedly arranged on the side of the bottom wall 11 away from the connecting ear plate 2 and is welded with the bottom wall 11. The lifting ring 7 provides a force point for the worker, thereby facilitating the worker to take out the filter screen from the raw material tank 8.

[0054] Embodiment 4

[0055] The difference between this embodiment 4 and embodiment 2 is that:

[0056] With reference to Figure 8 and Figure 9 , the filter screen further comprises a scraping assembly 6, which comprises a connecting rod 61, a scraping rod 62 and a propeller 63, and all of them are made of stainless steel. The bottom wall 11 is provided with a second mounting hole 121 for the connecting rod 61 to pass through, and the scraping rod 62 and the propeller 63 are fixedly arranged at both ends of the connecting rod 61, and the propeller 63 is arranged inside the cylinder body 1, and the scraping rod 62 is used to abut against the bottom wall 11, so that the scraping assembly 6 is rotationally connected with the bottom wall 11. In this embodiment, the propeller 63 comprises two oppositely arranged blades, which are arranged perpendicularly to the scraping rod 62. At the same time, the hanging rod and the propeller 63 are detachably connected with the connecting rod 61 through screws, thereby facilitating the worker to install, disassemble and clean the scraping assembly 6.

[0057] The implementation principle of the filter screen for the polyurethane casting machine according to the embodiment of the present application is as follows:

[0058] With reference to Figure 8 and Figure 9 When the raw materials in the raw material tank 8 flow out through the discharge pipeline 9, the flowing raw materials drive the hanging rod to rotate through the propeller, so that the hanging rod rotates in close contact with the bottom wall 11; thereby when the raw material scale or other impurities block the communication holes 13 on the wall of the cylinder body 1, the scraping plate can scrape the raw material scale, other impurities and the like to the connecting ear plate 2 on the outer periphery of the cylinder body 1, thereby ensuring the flowability of the raw materials.

[0059] With reference to Figure 8 and Figure 9 , and the blades are arranged perpendicularly to the hanging rod, which can ensure the rotation effect of the scraping assembly 6 while reducing the resistance of the scraping assembly 6 to the flow of the raw materials, so as to improve the flowability of the raw materials.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A filter screen for a polyurethane casting machine, characterized in that: The invention comprises a cylinder (1) and a connecting ear plate (2), wherein the connecting ear plate (2) is arranged at the cylinder mouth of the cylinder (1), and the cylinder (1) and the connecting ear plate (2) are integrally formed; a cylinder bottom wall (11) and a cylinder side wall (12) of the cylinder (1) are both provided with a plurality of communicating holes (13), and the angle between the cylinder side wall (12) and the cylinder bottom wall (11) is an obtuse angle; the connecting ear plate (2) is provided with a plurality of first mounting holes (21) at intervals, and the first mounting holes (21) are used for passing bolts or screws; the filter screen is used inside a raw material tank (8) of a polyurethane casting machine, the inner peripheral wall of the raw material tank (8) is provided with a mounting convex ring (81), the connecting ear plate (2) is used for being threadedly connected to the mounting convex ring (81), and the cylinder mouth of the cylinder (1) is arranged toward a discharge pipe (9) of the raw material tank (8).

2. The filter screen for the polyurethane casting machine according to claim 1, characterized in that: The invention also includes a scraping assembly (6), wherein the scraping assembly (6) includes a connecting rod (61), a scraping rod (62) and a propeller (63); the bottom wall (11) of the cylinder is provided with a second mounting hole (121) for the connecting rod (61) to pass through; the scraping rod (62) and the propeller (63) are fixed at both ends of the connecting rod (61), and the propeller (63) is arranged inside the cylinder (1); the scraping rod (62) is used to abut against the bottom wall (11) of the cylinder.

3. The filter screen for the polyurethane casting machine according to claim 2, characterized in that: The propeller (63) comprises two blades arranged opposite to each other, and the blades are arranged perpendicular to the scraper rod (62).

4. The filter screen for the polyurethane casting machine according to claim 1, characterized in that: The invention also includes an annular baffle (3), which is arranged on the side of the connecting ear plate (2) away from the cylinder (1), and the annular baffle (3) and the cylinder (1) are integrally formed; the annular baffle (3), the connecting ear plate (2) and the cylinder side wall (12) form a receiving annular groove (5), and the receiving annular groove (5) is used to receive scale deposits of the raw material.

5. The filter screen for the polyurethane casting machine according to claim 4, characterized in that: It also includes a horizontally arranged annular ridge (4), the annular ridge (4) being arranged on a side of the annular baffle (3) close to the cylinder (1), and the annular ridge (4) being arranged on a side of the annular baffle (3) away from the connecting ear plate (2), and the annular ridge (4) and the annular baffle (3) being integrally formed.

6. The filter screen for the polyurethane casting machine according to claim 1, characterized in that: The included angle between the cylinder side wall (12) and the cylinder bottom wall (11) is 135°.

7. The filter screen for the polyurethane casting machine according to claim 1, characterized in that: The diameter of the communicating hole (13) is 5 mm.

8. The filter screen for the polyurethane casting machine according to claim 1, characterized in that: It also includes a hanging ring (7), which is fixed on the side of the bottom wall (11) of the cylinder away from the connecting ear plate (2), and the hanging ring (7) is fixed to the bottom wall (11) of the cylinder by welding.

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