TPU film raw material filtering device

Abstract

The utility model discloses a TPU film raw material filtering device, and belongs to the technical field of TPU equipment. The filtering device is divided into the rough filtering assembly and the fine filtering assembly, the rough filtering assembly and the fine filtering assembly are both designed to be of the structure that the filtering materials are installed in the shell, the internal filtering materials can be replaced conveniently and rapidly, and the rough filtering assembly and the fine filtering assembly are connected through threads, so that rapid disassembly and combination can be achieved; the coarse filter steel mesh is pressed by the pressing ring, so that the steel mesh can be quickly disassembled only by loosening the pressing ring during replacement; a plurality of groups of refined filtration membranes are directly pressed from the bottom through the die head connecting seat, and the plurality of groups of refined filtration membranes can be detached from the refined filtration shell by rotating and detaching the die head connecting seat, so that the operation difficulty is reduced; and multiple groups of refined filtration membranes are arranged, so that impurities can be prevented from entering the perfusion system under the condition that one group of refined filtration membranes goes wrong, and the risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of TPU equipment, and in particular relates to a TPU film raw material filtering device. Background Art

[0002] The main principle of TPU filling machine equipment is to perform high-precision control of raw material flow. In order to better control the flow and improve product quality, it is necessary to perform high-precision filtration on the raw materials entering the filling machine system to reduce the impact of impurities on the flow. It is necessary to install a high-precision filter on the feeding system. Generally, a 200-mesh filtration speed is required, which places high demands on the filter.

[0003] The filter of the existing perfusion equipment adopts the ordinary top-in and bottom-out style filter. This type of filter has the disadvantages of complex filter installation and great difficulty in installation, and the difficulty of taking over the pipes is very high; the operation is difficult, and it takes more than half an hour to replace the filter; the problem of difficult replacement is that if the filter is damaged, all impurities will enter the perfusion system, which is a high risk. Summary of the Invention

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a TPU film raw material filtering device.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: a TPU film raw material filtering device, comprising a coarse filter component and a fine filter component, the coarse filter component is arranged on the upper side of the fine filter component, the coarse filter component comprises a coarse filter steel mesh and a coarse filter housing, the coarse filter steel mesh is arranged in the coarse filter housing, the bottom of the coarse filter housing is provided with a connecting joint, the top of the coarse filter housing is provided with an inner countersunk hole, the bottom of the inner countersunk hole is provided with a limiting hole, the coarse filter steel mesh is arranged in the limiting hole, the top of the limiting hole is provided with a clamping ring, the clamping ring is threadedly connected to the inner countersunk hole, and the lower end is pressed on the upper end of the coarse filter steel mesh;

[0006] The fine filter assembly includes a fine filter housing, the top of the fine filter housing is provided with a matching hole that matches the bottom connecting joint of the coarse filter housing, the fine filter housing is provided with a filter material installation cavity, the filter material installation cavity is provided with multiple groups of fine filter membranes, and the multiple groups of fine filter membranes are tightly fitted with each other and arranged in the filter material installation cavity, the bottom of the fine filter housing is provided with a die head connecting seat, the top of the die head connecting seat is threadedly connected to the bottom of the fine filter housing, and the top of the die head connecting seat is on the lowermost fine filter membrane.

[0007] Preferably, the fine filtration membrane includes an external annular support and a filter membrane arranged inside the external annular support.

[0008] Preferably, the exteriors of the coarse filter housing and the fine filter housing are both provided with arc grooves.

[0009] Preferably, a connecting flange is provided at the bottom of the die head connecting seat.

[0010] The beneficial effects of the present invention are as follows: by dividing the filter device into a coarse filter component and a fine filter component, both of which are designed to have filter materials installed in the shell, the internal filter materials can be replaced conveniently and quickly, and the coarse filter component and the fine filter component are connected by threads, which can be quickly disassembled and combined; the coarse filter steel mesh is compressed by a clamping ring, and the steel mesh can be quickly disassembled by simply loosening the clamping ring during replacement; multiple groups of fine filter membranes are directly compressed from the bottom through the die head connecting seat, and the multiple groups of fine filter membranes can be removed from the fine filter shell by rotating and removing the die head connecting seat, thereby reducing the difficulty of operation; and the multiple groups of fine filter membranes can prevent impurities from entering the perfusion system when a problem occurs in one of the groups, thereby reducing risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0013] In the figure: 1. Coarse filter steel mesh; 2. Coarse filter housing; 3. Connecting joint; 4. Internal countersunk hole; 5. Limiting hole; 6. Clamping ring; 7. Fine filter housing; 8. Matching hole; 9. Filter material installation cavity; 10. Fine filter membrane; 11. Die head connecting seat; 12. External annular bracket; 13. Filter membrane; 14. Arc slot; 15. Connecting flange. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0015] Example: A TPU film raw material filtering device, such as Figure 1-Figure 2 As shown, it includes a coarse filter component and a fine filter component, and is characterized in that: the coarse filter component is arranged on the upper side of the fine filter component, the coarse filter component includes a coarse filter steel mesh 1 and a coarse filter housing 2, the coarse filter steel mesh 1 is arranged in the coarse filter housing 2, the bottom of the coarse filter housing 2 is provided with a connecting joint 3, the top of the coarse filter housing 2 is provided with an inner countersunk hole 4, the bottom of the inner countersunk hole 4 is provided with a limiting hole 5, the coarse filter steel mesh 1 is arranged in the limiting hole 5, the top of the limiting hole 5 is provided with a clamping ring 6, the clamping ring 6 is threadedly connected to the inner countersunk hole 4, and the lower end is pressed on the upper end of the coarse filter steel mesh 1;

[0016] The fine filter assembly includes a fine filter housing 7, the top of the fine filter housing 7 is provided with a matching hole 8 that cooperates with the bottom connecting joint 3 of the coarse filter housing 2, the fine filter housing 7 is provided with a filter material installation cavity 9, and the filter material installation cavity 9 is provided with multiple groups of fine filter membranes 10. The multiple groups of fine filter membranes 10 are tightly fitted with each other and arranged in the filter material installation cavity 9. The bottom of the fine filter housing 7 is provided with a die head connecting seat 11, and the top of the die head connecting seat 11 is threadedly connected to the bottom of the fine filter housing 7, and the top of the die head connecting seat 11 is on the lowermost fine filter membrane 10.

[0017] The fine filter membrane 10 includes an external annular support 12 and a filter membrane 13 arranged inside the external annular support 12; the outsides of the coarse filter housing 2 and the fine filter housing 7 are both provided with arc grooves 14; the bottom of the die head connecting seat 11 is provided with a connecting flange 15.

[0018] The principle of this utility model is as follows: when in use, the filter assembly is connected to the injection molding machine through the thread provided in the inner countersunk hole 4 on the coarse filter housing 2. After the masterbatch is melted, it flows into the coarse filter housing 2 and is preliminarily filtered through the coarse filter steel mesh 1. The sieve hole diameter on the coarse filter steel mesh 1 is 0.9 mm. The flow rate is controlled by a metering pump to prevent the steel mesh from being damaged by excessive pressure. The solution penetrates from the inner wall of the coarse filter steel mesh 1 to the outside, flows downward between the coarse filter steel mesh 1 and the inner wall of the coarse filter housing 2, enters the fine filter housing 7 from the connecting joint 3, and is filtered layer by layer through the multi-layer fine filter membrane 10, and finally enters the die head through the die head connecting seat 11 at the bottom. When cleaning or replacement is required, the filter device is disassembled as a whole, and the coarse filter steel mesh 1 can be removed by removing the clamping ring 6 with a well wrench. The multi-layer fine filter membrane 10 can be removed from the fine filter housing 7 by unscrewing the die head connecting seat 11.

[0019] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A TPU film raw material filtering device, comprising a coarse filter component and a fine filter component, characterized in that: The coarse filter assembly is arranged on the upper side of the fine filter assembly, and the coarse filter assembly includes a coarse filter steel mesh (1) and a coarse filter housing (2). The coarse filter steel mesh (1) is arranged in the coarse filter housing (2), and a connecting joint (3) is provided at the bottom of the coarse filter housing (2). The top of the coarse filter housing (2) is provided with an inner sink hole (4), and the bottom of the inner sink hole (4) is provided with a limiting hole (5). The coarse filter steel mesh (1) is arranged in the limiting hole (5), and a clamping ring (6) is sleeved on the top of the limiting hole (5). The clamping ring (6) is threadedly connected to the inner sink hole (4), and the lower end is pressed on the upper end of the coarse filter steel mesh (1); The fine filter assembly comprises a fine filter housing (7), the top of the fine filter housing (7) is provided with a matching hole (8) that matches the bottom connection joint (3) of the coarse filter housing (2), a filter material installation cavity (9) is provided in the fine filter housing (7), a plurality of groups of fine filter membranes (10) are provided in the filter material installation cavity (9), and the plurality of groups of fine filter membranes (10) are closely fitted to each other and arranged in the filter material installation cavity (9), a die head connection seat (11) is provided at the bottom of the fine filter housing (7), the top of the die head connection seat (11) is threadedly connected to the bottom of the fine filter housing (7), and the top of the die head connection seat (11) is pressed against the lowermost fine filter membrane (10).

2. A TPU film raw material filtering device according to claim 1, characterized in that: The fine filtration membrane (10) comprises an external annular support (12) and a filter membrane (13) arranged inside the external annular support (12).

3. The TPU film raw material filtering device according to claim 1, characterized in that: Arc grooves (14) are provided on the exterior of the coarse filter housing (2) and the fine filter housing (7).

4. The TPU film raw material filtering device according to claim 1, characterized in that: A connecting flange (15) is provided at the bottom of the die head connecting seat (11).

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