阅读说明：本技术 高分子材料用熔体过滤器 (Melt filter for high molecular material ) 是由 赵义科 杨静 张长玉 张伟杰 彭光辉 马世民 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种高分子材料用熔体过滤器,包括过滤器主体,在过滤器主体内开设有熔体流道和滑板通道；加热部、特钢滑板、液压缸、过滤部和密封部,密封部包括特钢进口密封环和特钢出口密封环,特钢进口密封环和特钢出口密封环分别嵌套在滑板通道两侧的过滤器主体上；在特钢进口密封环与过滤器主体的结合面开设环形卡槽,在环形卡槽内设有弹性金属环；润滑部,润滑部具有进、出口石墨填充环。本发明优点在于通过设置弹性金属环形成弹性自补偿密封,使整个通道无死角,从而使易老化高分子材料在生产过程中,不漏料；通过液压缸带动特钢滑板,能够实现快速更换过滤网,避免了频繁拆卸过滤器,降低了操作人员的劳动强度。(The invention discloses a melt filter for high polymer materials, which comprises a filter main body, wherein a melt flow passage and a sliding plate passage are arranged in the filter main body; the special steel inlet sealing ring and the special steel outlet sealing ring are respectively nested on the filter main bodies on two sides of the sliding plate channel; the joint surface of the special steel inlet sealing ring and the filter main body is provided with an annular clamping groove, and an elastic metal ring is arranged in the annular clamping groove; the lubricating part is provided with a graphite filling ring at an inlet and an outlet. The invention has the advantages that the elastic self-compensating seal is formed by arranging the elastic metal ring, so that the whole channel has no dead angle, and the material leakage of the high polymer material which is easy to age is avoided in the production process; the hydraulic cylinder drives the special steel sliding plate, so that the filter screen can be replaced quickly, frequent disassembly of the filter is avoided, and the labor intensity of operators is reduced.)

1. A melt filter for high molecular materials is characterized by comprising

The filter comprises a filter main body, wherein a melt flow channel and a sliding plate channel are arranged in the filter main body and are mutually crossed;

a heating unit for heating the inside of the filter main body;

the special steel sliding plate is arranged in the sliding plate channel, the bottom of the special steel sliding plate is provided with an L-shaped discharge channel, and the middle part of the special steel sliding plate is provided with a filtering hole with the same aperture as the melt flow channel;

the hydraulic cylinder is connected with the filter main body through a supporting piece, and the bottom of a hydraulic rod of the hydraulic cylinder is connected with the top of the special steel sliding plate through a connecting part;

the filtering part is arranged in the filtering hole and used for filtering the dissolved impurities;

the sealing part comprises a special steel inlet sealing ring and a special steel outlet sealing ring, the special steel inlet sealing ring and the special steel outlet sealing ring are respectively nested on the filter main bodies at two sides of the sliding plate channel, and the opposite surfaces of the special steel inlet sealing ring and the special steel outlet sealing ring are both contacted with the special steel sliding plate; an annular clamping groove is formed in the joint surface of the special steel inlet sealing ring and the filter main body, and an elastic metal ring is arranged in the annular clamping groove to form elastic self-compensation sealing;

the special steel inlet sealing ring is sleeved with the inlet graphite filling ring, and the outlet graphite filling ring is sleeved with the special steel outlet sealing ring and is in contact with the special steel sliding plate.

2. The melt filter for polymeric materials as claimed in claim 1, wherein the depth of said ring-shaped groove is smaller than the thickness of said elastic metal ring.

3. The melt filter for polymeric materials according to claim 2, wherein the special steel inlet sealing ring has a tapered cross-section, the outer end diameter of the special steel inlet sealing ring is equal to the diameter of the feed end of the melt channel, and the inner end diameter of the special steel inlet sealing ring is equal to the diameter of the feed end of the L-shaped discharge channel.

4. The melt filter for polymer materials according to claim 3, wherein two inlet graphite packing rings and two outlet graphite packing rings are respectively fitted on the special steel inlet sealing ring and the special steel outlet sealing ring at intervals.

5. The melt filter for polymeric materials as claimed in claim 4, wherein said filter part is composed of a perforated plate and a filter net, and is disposed at a rear end position in said filter hole, and an inner cavity of the filter hole in front of the filter part constitutes a waste receiving cavity.

6. The melt filter for polymeric materials according to claim 5, wherein the connecting portion has a T-shaped connecting block, the upper portion of the T-shaped connecting block is connected to the bottom of the hydraulic rod, and the lower portion of the T-shaped connecting block is connected to the top of the special steel slide plate.

7. The melt filter for polymer material according to claim 6, wherein the heating part is a heater provided on an upper end surface and a lower end surface of the filter body.

Technical Field

The invention relates to a melt filter, in particular to a melt filter for a high polymer material.

Background

The current situation of melt filtration of the easily aged polymer materials in the market at present is as follows: when impurity in the fuse-element blockked up the filter screen, need shut down earlier, then tear the bolt on the flange down, dismantle the mould neck again, take out the perforated plate, the ageing macromolecular material of surface mounting around its clearance, treat to change the filter screen after the clean up, then put into the primary importance with the perforated plate, installed the mould neck, screwed up the bolt on the flange, start production. The method for replacing the filter screen needs to disassemble the die neck every time, thereby wasting time and labor and having extremely low efficiency. The existing various melt filters in domestic and foreign markets cannot be applied due to the overhigh temperature sensitivity of the easily-aged high polymer material (the easily-aged high polymer material can be solidified and aged for tens of minutes at the melting point temperature, and is called as temperature sensitivity in the industry). Melt filters currently on the market, such as: plate filters and column filters have problems in sealing mode or design structure, for example, the non-straight transition between the inlet and the outlet of a flow channel will generate aged high polymer materials at multiple positions, which can not be applied to the production of the easily aged high polymer materials.

Disclosure of Invention

The invention aims to provide a melt filter for a high polymer material.

In order to achieve the purpose, the invention can adopt the following technical scheme:

the melt filter for polymer material of the present invention comprises

The filter comprises a filter main body, wherein a melt flow channel and a sliding plate channel are arranged in the filter main body and are mutually crossed;

a heating unit for heating the inside of the filter main body;

the special steel sliding plate is arranged in the sliding plate channel, the bottom of the special steel sliding plate is provided with an L-shaped discharge channel, and the middle part of the special steel sliding plate is provided with a filtering hole with the same aperture as the melt flow channel;

the hydraulic cylinder is connected with the filter main body through a supporting piece, and the bottom of a hydraulic rod of the hydraulic cylinder is connected with the top of the special steel sliding plate through a connecting part;

the filtering part is arranged in the filtering hole and used for filtering the dissolved impurities;

the sealing part comprises a special steel inlet sealing ring and a special steel outlet sealing ring, the special steel inlet sealing ring and the special steel outlet sealing ring are respectively nested on the filter main bodies at two sides of the sliding plate channel, and the opposite surfaces of the special steel inlet sealing ring and the special steel outlet sealing ring are both contacted with the special steel sliding plate; an annular clamping groove is formed in the joint surface of the special steel inlet sealing ring and the filter main body, and an elastic metal ring is arranged in the annular clamping groove to form elastic self-compensation sealing;

the special steel inlet sealing ring is sleeved with the inlet graphite filling ring, and the outlet graphite filling ring is sleeved with the special steel outlet sealing ring and is in contact with the special steel sliding plate.

The depth of the annular clamping groove is smaller than the thickness of the elastic metal ring.

The section of the special steel inlet sealing ring is conical, the diameter of the outer end of the special steel inlet sealing ring is consistent with that of the feeding end of the melt flow channel, and the diameter of the inner end of the special steel inlet sealing ring is consistent with that of the feeding end of the L-shaped discharge channel.

And two inlet graphite filling rings and two outlet graphite filling rings are respectively sleeved on the special steel inlet sealing ring and the special steel outlet sealing ring at intervals.

The filter house comprises perforated plate and filter screen, sets up filter house the downthehole rear end position department of filter, the filter house inner chamber in filter house the place ahead constitutes a waste material and holds the chamber.

The connecting part is provided with a T-shaped connecting block, the upper part of the T-shaped connecting block is connected with the bottom of the hydraulic rod, and the lower part of the T-shaped connecting block is connected with the top of the special steel sliding plate.

The heating part is a heater provided on an upper end surface and a lower end surface of the filter body.

The invention has the advantages that the elastic self-compensating seal is formed by arranging the elastic metal ring, and the taper design of the inner cavity of the inlet sealing ring ensures that the whole channel has no dead angle, thereby ensuring that the high polymer material which is easy to age does not leak in the production process; meanwhile, the hydraulic cylinder pushes the special steel sliding plate, an L-shaped discharge channel of the special steel sliding plate is communicated with the melt flow channel, and the easily aged high polymer material melt can be easily discharged out of the filter in the initial production stage, so that the qualified rate of finished products is improved; the hydraulic cylinder drives the special steel sliding plate, so that the filter screen can be quickly replaced, frequent disassembly of the filter in the production process of the easily-aged high polymer material is avoided, the labor intensity of operators is reduced, and the labor efficiency is improved; the automation of the production line is realized to the greatest extent, the auxiliary time is saved, and the productivity of the equipment is improved; the main components of the filter do not need to be maintained regularly during use.

Drawings

Fig. 1 is a schematic structural view of a state of replacing a filter screen according to the present invention.

Fig. 2 is a partial sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic structural diagram of the working state of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5 is a partially enlarged view of a portion B in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, the melt filter for polymer materials of the present invention comprises a filter body 1, wherein the filter body 1 is square and made of corrosion resistant structural steel, a melt flow channel 1.1 and a slide plate channel 1.2 are arranged in the filter body 1, and the melt flow channel 1.1 and the slide plate channel 1.2 are mutually crossed; the two ends of the inlet and the outlet of the melt runner 1.1 are respectively connected with the extrusion equipment and the forming die through high-strength bolts; the upper end face and the lower end face of the filter body 1 are provided with heaters 1.3 for heating the interior of the filter body 1, so that the problem that the traditional filter cannot be used due to overhigh temperature sensitivity of an easily aged high polymer material is solved;

the special steel slide plate 2 is arranged in the slide plate channel 1.2, the bottom of the special steel slide plate 2 is provided with an L-shaped discharge channel 2.1 which is used for discharging the easily aged high polymer material melt out of the filter main body 1 at the initial stage of production, so that the qualification rate of related product finished products is improved; the middle part of the special steel sliding plate 2 is provided with a filtering hole 2.2 with the same aperture as the fused mass flow passage 1.1, and the filtering hole is used for filtering the fused mass impurities and the aged high polymer material; a porous plate 2.3 and a filter screen 2.4 are arranged at the inner rear end of the filter hole 2.2, and an inner cavity in front of the filter hole 2.2 forms a waste material accommodating cavity for accommodating accumulated aged high polymer materials;

the hydraulic cylinder 3 is fixedly connected with the filter body 1 through a support piece 3.1, and the bottom of a hydraulic rod of the hydraulic cylinder 3 is connected with the top of the special steel sliding plate 2 through a T-shaped connecting block 3.2 and used for driving the special steel sliding plate 2 to slide in and out; the T-shaped connecting block 3.2 is used for limiting and quickly determining the working position of the special steel sliding plate 2 in the process of pushing the special steel sliding plate 2;

the sealing part comprises a special steel inlet sealing ring 4.1 and a special steel outlet sealing ring 4.2, the special steel inlet sealing ring 4.1 and the special steel outlet sealing ring 4.2 are respectively nested on the filter main body 1 at two sides of the sliding plate channel 1.2, and the opposite surfaces of the special steel inlet sealing ring 4.1 and the special steel outlet sealing ring 4.2 are both contacted with the special steel sliding plate 2; an annular clamping groove is formed in the joint surface of the special steel inlet sealing ring 4.1 and the filter main body 1, an elastic metal ring 4.3 is arranged in the annular clamping groove, the depth of the annular clamping groove is smaller than the thickness of the elastic metal ring 4.3, and elastic self-compensation sealing is formed under the combined action of the elastic metal ring 4.3 and the end surface of the special steel inlet sealing ring 4.1 under the action of material pressure, so that the filter is sealed in the whole process and does not leak materials in the working process; the special steel inlet sealing ring 4.1 is provided with an inlet graphite filling ring 4.4, the special steel outlet sealing ring 4.2 is provided with an outlet graphite filling ring 4.5, and the inlet graphite filling ring 4.4 and the outlet graphite filling ring 4.5 are both in contact with the special steel sliding plate 2 and have the function of lubricating the sliding of the special steel sliding plate 2 in and out.

The cross-section of special steel import sealing ring 4.1 is the toper, special steel import sealing ring 4.1 outer end diameter is unanimous with melt flow channel 1.1's feed end diameter, special steel import sealing ring 4.1 inner end diameter is unanimous with L shape discharge channel 2.1's feed end diameter, it is unanimous to filter hole 2.2 feed end diameter, it is unanimous with special steel export sealing ring 4.2 inner end diameter to filter hole 2.2 discharge end diameter, make polymer material straight transition filter, solve traditional filter because of the problem that the project organization produced ageing polymer material in many places.

The working steps of the invention are as follows:

step 1, a heater 1.3 is turned on, after the special steel slide plate is heated to a set temperature, a hydraulic cylinder 3 is started, a special steel slide plate 2 is driven rapidly, a feeding port of an L-shaped discharge channel 2.1 on the special steel slide plate 2 is aligned with a discharging port of a special steel inlet sealing ring 4.1, the special steel slide plate is started to produce, and the easily aged high polymer material melt is discharged out of a melt filter from the L-shaped discharge channel 2.1 of the special steel slide plate 2 in the initial production stage.

And 2, after the melt is qualified, closing the extruder, starting the hydraulic cylinder 3 to drive the special steel sliding plate 2, enabling the porous plate 2.3 and the filter screen 2.4 to move to the working position quickly (within 1 second), then stopping the hydraulic cylinder 3, and starting up the machine for normal production.

And 3, stopping the extruder when the filter screen 2.4 on the porous plate 2.3 in the filter body 1 is blocked.

And 4, starting the hydraulic cylinder 3, quickly driving the special steel sliding plate 2 to quickly (within 1 second) move the porous plate 2.3 and the filter screen 2.4 on the special steel sliding plate 2 out of the filter main body 1, and then stopping the hydraulic cylinder 3.

Step 5, cleaning the aged high polymer material with the front end of 2.4 mm of the filter screen and the rear end of 3mm of the porous plate 2.3, replacing the filter screen 2.4, holding the cavity for the waste at the front end of the filter screen 2.4, holding the waste with a certain volume, reducing the frequency of cleaning the filter screen 2.4, and easily taking the waste in the system out of the system.

And 6, after the filter screen 2.4 is replaced, starting the hydraulic cylinder 3, quickly (within 1 second) pushing the special steel sliding plate 2, quickly (within 1 second) moving the porous plate 2.3 and the filter screen 2.4 to the working position, and then stopping the hydraulic cylinder 3 to realize quick screen replacement.

And 7, starting the extruder to normally produce.

The device adopts the hydraulic cylinder 3 driving technology to realize the quick replacement of the filter screen 2.4; the whole sealing and no material leakage are realized by forming elastic automatic compensation; the diameters of the mutual matching positions of the melt flow channel 1.1, the filter holes 2.2, the special steel inlet sealing ring 4.1 and the special steel outlet sealing ring 4.2 are consistent, so that the melt straight transition filter is realized, and the problem that the traditional filter is aged due to the retention of high polymer materials caused by structural design defects is solved.