Vacuumizing and filtering system of extruder

Abstract

The utility model relates to a vacuum-pumping filtering system of an extruder, which comprises a barrel, a fixed plate is fixedly connected in the barrel, a central hole is formed in the center of the fixed plate, stacked flexible filter cloth is fixedly connected around the central hole of the fixed plate, a support plate is fixedly connected to the top of the flexible filter cloth, a connecting plate is fixedly connected to the inner wall of the barrel, and the connecting plate is fixedly connected to the inner wall of the barrel. A guide rod is fixedly connected between the connecting plate and the fixing plate, a fin plate is fixedly connected to the supporting plate and slidably connected with the guide rod, and an air inlet and an air outlet are formed in the two ends of the barrel respectively. According to the vacuum-pumping filtering system of the extruder, the stacked flexible filter cloth extends upwards or is stacked along with the supporting plate when the air volume and the air pressure change, so that the filtering area is adjusted, small molecular particles are not prone to adhering when the flexible filter cloth is stacked or extended, and the filtering efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter system, especially an extruder vacuum filtering system. BACKGROUND

[0002] Extruder exhaust port connects needle hole air extractor, forms negative pressure in extruder, can remove gas in material through vacuum treatment, reduces bubble generation, improves product compactness and precision, high forming precision, stable and reliable product quality. Small molecule substances in PC melt during extruder operation are extracted together with vacuum extraction when extruder exhaust port is vacuumized, and the exhaust pollutes the production environment.

[0003] The existing extruder vacuum system adopts a filler type filter, the filter has a small filtering area, small molecules are prone to adhere to the filler, cleaning is difficult, the running time is short after cleaning, the adaptability to high-pressure air with large air volume is poor, and the vacuum extraction efficiency is affected. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of extruder vacuum filtering systems, to solve the problem that the existing extruder vacuum system adopts filler type filter, filter has small filtering area, small molecules are prone to adhere to the filler, cleaning is difficult, the running time is short after cleaning, the adaptability to high-pressure air with large air volume is poor, and the vacuum extraction efficiency is affected.

[0005] To solve the above problems, the utility model provides an extruder vacuum filtering system, including cylinder, fixedly connected with fixed plate in cylinder, the center of fixed plate is equipped with center hole, the fixed plate is fixedly connected with the flexible filter cloth of stacking around center hole, the top of flexible filter cloth is fixedly connected with support plate, the inner wall of cylinder is fixedly connected with connecting plate, connecting plate and fixed plate are fixedly connected with guide rod, support plate is fixedly connected with fin, fin is slidably connected with guide rod, the both ends of cylinder are equipped with air inlet and air outlet respectively.

[0006] The utility model provides a kind of extruder vacuum filtering system also has the following technical features:

[0007] Further, air inlet is connected with air inlet pipe, air inlet pipe extends into center hole, air inlet pipe is fixedly connected with ash plate under fixed plate.

[0008] Further, support plate elastically slides in cylinder.

[0009] Further, compression spring is sleeved on guide rod, the top of compression spring and connecting plate abut, the bottom of compression spring and fin abut.

[0010] Further, air hole is opened on support plate, and flexible filter cloth covers on support plate.

[0011] Further, the support plate is fixedly connected with a spring, and the bottom end of the spring is fixedly connected to the dusting plate.

[0012] Further, the fixed plate and the cylinder form a dust collection bin.

[0013] The extruder vacuum filtration system has the following beneficial effects: the flexible filter cloth is stacked, and the filtering area is adjusted by extending upward or stacking the support plate when the air volume and air pressure change, and the flexible filter cloth is not easy to adhere to small particles when stacking or extending, thereby improving the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The utility model discloses an extruder vacuum filtration system front view cross section axonometric diagram for embodiment of the utility model;

[0015] Fig. 2 The utility model discloses an extruder vacuum filtration system front view cross section axonometric diagram for another embodiment of the utility model.

[0016] (1-cylinder, 2-fixed plate, 3-center hole, 4-flexible filter cloth, 5-support plate, 6-connection plate, 7-guide rod, 8-fin plate, 9-air inlet, 10-air outlet, 11-air inlet pipe, 12-dusting plate, 13-spring, 14-air hole, 15-spring, 16-dust collection bin) DETAILED DESCRIPTION

[0017] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] As Figs. 1-2 The embodiment of the extruder vacuum filtration system of the utility model shown in the figure, the extruder vacuum filtration system includes cylinder 1, and the fixed plate 2 is fixedly connected in the cylinder 1, and the center hole 3 is arranged in the center of the fixed plate 2, and the flexible filter cloth 4 is fixedly connected with the fixed plate 2 around the center hole 3, and the support plate 5 is fixedly connected to the top of the flexible filter cloth 4, and the connection plate 6 is fixedly connected to the inner wall of the cylinder 1, and the guide rod 7 is fixedly connected between the fixed plate 2 and the connection plate 6, and the fin plate 8 is fixedly connected to the support plate 5, and the fin plate 8 is slidably connected with the guide rod 7, and the air inlet 9 and the air outlet 10 are respectively arranged at both ends of the cylinder 1.

[0019] Specifically, the air inlet 9 is connected with the exhaust port of the vacuum system, when the vacuum system is running, the dust-containing gas enters the cylinder 1 from the air inlet 9, and enters the filter cylinder made of the flexible filter cloth 4 from the center hole 3, the gas pushes the support plate 5 at the top to slide the support plate 5 upwards along the guide rod 7, and drives the flexible filter cloth 4 to extend, the flexible filter cloth 4 filters the dust-containing gas, and the clean air is discharged from the air outlet 10.

[0020] In an embodiment of the present application, preferably, the air inlet 9 is connected with an air inlet pipe 11, the air inlet pipe 11 extends into the center hole 3, and the air inlet pipe 11 is fixedly connected with a dust removal plate 12 below the fixed plate 2, the impurities filtered are left on the flexible filter cloth 4, and the impurities will fall off when the flexible filter cloth 4 is extended or stacked, and the impurities will not be blown up again when the air inlet.

[0021] In an embodiment of the present application, preferably, the support plate 5 elastically slides in the cylinder 1, so as to avoid that the flexible filter cloth 4 is damaged by suddenly increased tension, and the vibration generated when the support plate 5 elastically slides facilitates the impurities on the filter cloth to fall off.

[0022] In an embodiment of the present application, preferably, a compression spring 13 is sleeved on the guide rod 7, the top of the compression spring 13 abuts against the connecting plate 6, and the bottom of the compression spring 13 abuts against the fin plate 8, so as to make the support plate 5 slide on the guide rod 7 and resist the suddenly increased air volume and air pressure. Fig. 1 .

[0023] In an embodiment of the present application, preferably, air-permeable holes 14 are formed in the support plate 5, and the flexible filter cloth 4 covers the support plate 5, so that the top also has filtering capacity and the filtering area is increased.

[0024] In an embodiment of the present application, preferably, a spring 15 is fixedly connected to the support plate 5, and the bottom end of the spring 15 is fixedly connected to the dust removal plate 12, so as to make the support plate 5 slide on the guide rod 7 and resist the suddenly increased air volume and air pressure. Fig. 2 .

[0025] In an embodiment of the present application, preferably, a dust collection bin 16 is formed between the fixed plate 2 and the cylinder 1, and is used for collecting the impurities falling off.

[0026] In summary, the extruder vacuum filtration system in the above embodiments of the utility model, specifically, the air inlet 9 and the exhaust port of vacuum system is connected, when the vacuum system runs, dust-containing gas enters the cylinder 1 from the air inlet 9, and enters the filter cartridge made of flexible filter cloth 4 from the central hole 3, the gas pushes the support plate 5 at the top to make the support plate 5 slide upward along the guide rod 7, the fin plate 8 on the support plate 5 compresses the compression spring 13 to resist the sudden increase of air volume and air pressure, in another embodiment, the support plate 5 pulls the spring 15 to resist the sudden increase of air volume and air pressure, the sliding of the support plate 5 drives the extension of the flexible filter cloth 4, the flexible filter cloth 4 filters the dust-containing gas, and the clean air is discharged from the air outlet 10, because of the intervention of the compression spring 13 or the spring 15, the flexible filter cloth 4 can be prevented from being damaged when the air volume changes, and vibration can be generated to make the adhered impurities fall off.

[0027] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An extruder vacuum filtration system characterized by, The utility model provides a filter device, including the cylinder, fixedly connected with fixed plate in the cylinder, the centre of fixed plate is equipped with the center hole, the fixed plate is fixedly connected with the flexible filter cloth of stacking around the center hole, the top of flexible filter cloth is fixedly connected with the support plate, the inner wall of cylinder is fixedly connected with the connecting plate, the connecting plate with fixed plate between is fixedly connected with the guide rod, the support plate is fixedly connected with the fin, the fin with guide rod slidingly connected, both ends of cylinder are equipped with air inlet and air outlet respectively.

2. The extruder vacuum filtration system of claim 1, wherein: The air inlet is connected with the air inlet pipe, the air inlet pipe extends to the center hole, the air inlet pipe is fixedly connected with the dusting plate under the fixed plate.

3. The extruder vacuum filtration system of claim 2, wherein: The support plate elastically slides in the cylinder.

4. The extruder vacuum filtration system of claim 3, wherein: The guide rod is sleeved with the compression spring, the top of compression spring is in contact with the connecting plate, the bottom of compression spring is in contact on the fin.

5. The extruder vacuum filtration system of claim 4, wherein: The support plate is provided with a ventilation hole, and the flexible filter cloth covers the support plate.

6. The extruder vacuum filtration system of claim 3, wherein: The support plate is fixedly connected with a spring, and the bottom end of the spring is fixedly connected to the dusting plate.

7. The extruder vacuum filtration system of claim 1, wherein: The fixed plate and the cylinder form a dust collection bin.

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