CN209775258U - Plastic melting and filtering device - Google Patents

Abstract

The utility model relates to a plastics melting filter equipment, casing include upper plate, intermediate plate and hypoplastron, are equipped with feed inlet, discharge gate and slag notch on the intermediate plate, are provided with guide plate, filter between upper plate, intermediate plate, the hypoplastron, are formed with the filter chamber between two filters, still are equipped with reciprocating motion's scraper subassembly about can between two filters, install the scraper blade of contradicting with the filter on the scraper subassembly. In the application, the filter plate and the guide plate are fixed among the upper plate, the middle plate and the lower plate and do not move or rotate, the structure is simple, the damage is not easy to damage, and the reliability is high; molten plastic flows into the filter cavity between the two filter plates through the feed inlet on the middle plate, impurities are blocked by the filter plates and are retained in the filter cavity, and the filtered molten plastic flows into the discharge cavity through the flow guide holes on the flow guide plate and then flows out through the discharge hole; the scraper component moves from right to left to discharge the impurities retained in the filter cavity through the slag outlet without manually cleaning the filter plate or discharging slag, so that the efficiency is high.

Description

plastic melting and filtering device

Technical Field

the utility model relates to a plastics injection moulding and processing and waste plastic recovery technique, especially a plastics melting filter equipment.

Background

with the acceleration of the industrialization process and the wider and wider use of plastics, plastic products and waste plastic garbage are visible everywhere, and the waste plastics need a long time for natural degradation, so that the environment is greatly damaged. At present, the plastic recovery technology is mature day by day, the melting treatment in the recovery technology of waste plastics is particularly important, and the existing melting treatment equipment can not effectively filter solid particles or solid residues of raw materials such as molten plastics and the like, so that the final product quality is difficult to ensure.

For example, the shuttle-type filtering equipment for waste plastic and foam in molten state disclosed in chinese published patent document CN107310072B with publication date of 2018.11.09 can carry out multi-layer and multiple-time filtering on raw materials, but the filtering residue mechanism of the equipment has complex structure, is easy to damage, has low reliability, and can not automatically discharge waste residue.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastics melting filter equipment for solve the problem that current melting filtration equipment structure is complicated, the reliability is poor, can not arrange the sediment automatically.

In order to solve the problem, the utility model provides a plastics melting filter equipment, casing include upper plate, intermediate lamella and hypoplastron, be equipped with feed inlet, discharge gate and slag notch on the intermediate lamella, the upper plate all be equipped with on the hypoplastron with the ejection of compact chamber that the discharge gate is linked together, the upper plate with from last guide plate, filter of having set gradually under to between the intermediate lamella, the hypoplastron with supreme guide plate, the filter of having set gradually, two from bottom to top between the intermediate lamella be formed with the filter chamber between the filter, the feed inlet the slag notch with the filter chamber is linked together, two reciprocating motion's scraper subassembly about still being equipped with between the filter, the upper and lower surface of scraper subassembly install respectively with the scraper blade that the filter is contradicted.

The utility model provides a plastics melting filter equipment still has following technical characteristic:

Further, the position that on the casing with the slag notch corresponds still installs row's sediment piece, arrange be equipped with on the sediment piece with the communicating row's of slag notch passageway, arrange and still install on the sediment piece and arrange the sediment pole, arrange the sediment pole and can seal or open by pneumatic cylinder or cylinder drive arrange the sediment passageway.

Further, scraper subassembly is used for installing and clears up the surface impurity of filter between two melting plastics filters, scraper subassembly includes scraper carrier and scraper blade, install respectively the upper surface, the lower surface of scraper carrier the scraper blade, a plurality of pressure spring mounting holes have still been seted up respectively to the upper surface, the lower surface of scraper carrier, each install the pressure spring in the pressure spring mounting hole respectively, the pressure spring be used for with the scraper blade supports presses the surface at the filter, the pressure spring can be used to compensate the clearance between scraper blade and the filter that causes because of scraper blade wearing and tearing for the contact between scraper blade and the filter becomes soft contact by hard contact, can reduce frictional force, reaches the purpose that improves scraper blade and filter life.

Furthermore, blade mounting grooves are respectively formed in the upper surface and the lower surface of the scraper carrier, a push rod connecting groove is further formed in the side surface of the scraper carrier, and a push rod mounting hole for a push rod of the scraper assembly to penetrate through is further formed in the middle plate; the scraper carrier is further provided with a through hole penetrating through the left side face and the right side face of the scraper carrier, and the scraper carrier is further provided with a guide hole penetrating through the left side face and the right side face of the scraper carrier. Preferably, the blade mounting groove has certain degree of depth and can lead the scraper blade in order to avoid the scraper blade crooked dead phenomenon of card to appear.

Furthermore, the filter plate comprises a substrate, a plurality of first filter holes are formed in one side of the substrate, the depth of each first filter hole is not less than three-fourths of the thickness of the substrate, a plurality of second filter holes are formed in a bottom plate of each first filter hole, and the depth of each second filter hole is not more than one-fourth of the thickness of the substrate; and a third filtering hole which is coaxial with the second filtering hole is also arranged on the bottom plate of the second filtering hole, the diameter of the third filtering hole is smaller than that of the second filtering hole, and the third filtering hole penetrates through the other side of the substrate. Preferably, the substrate of the filter plate is made of wear-resistant materials such as stainless steel plate and steel plate.

Furthermore, the flow guide plate comprises a base plate, flow guide holes corresponding to first filtering holes in the filter plate are formed in the base plate, connecting lines of centers of three adjacent flow guide holes are regular triangles, the diameter of each flow guide hole is larger than that of each first filtering hole, after the flow guide plate is aligned with the filter plate, the center of each flow guide hole is located at the midpoint of the connecting line of the centers of two adjacent first filtering holes, each flow guide hole is at least communicated with two adjacent first filtering holes, a transverse flow guide groove and a vertical flow guide groove are further formed in the side, close to the filter plate, of the flow guide plate, and the transverse flow guide groove and the vertical flow guide groove are used for communicating the flow guide holes and the first filtering holes with each other. Preferably, the base plate of the deflector can be made of wear-resistant materials such as steel plate, stainless steel plate and the like

Furthermore, one transverse diversion trench is arranged between two adjacent rows of diversion holes on the base plate of the diversion plate, and the transverse diversion trench connects the two rows of diversion holes; the base plate is provided with more than two vertical diversion grooves, and the vertical diversion grooves are used for communicating the transverse diversion grooves with each other.

Further, the width of the transverse diversion trench is equal to the distance between the central connecting lines of two adjacent rows of the diversion holes.

Furthermore, the diversion holes penetrate through the base plate of the diversion plate, and the groove depths of the transverse diversion grooves and the vertical diversion grooves are not more than one tenth of the thickness of the base plate of the diversion plate.

Further, the second filter holes are uniformly arranged on the bottom plate of the first filter hole with the central axis of the first filter hole as the center.

The utility model discloses following beneficial effect has: in the application, the filter plate and the guide plate are fixed among the upper plate, the middle plate and the lower plate and do not move or rotate, the structure is simple, the damage is not easy to damage, and the reliability is high; molten plastic flows into the filter cavity between the two filter plates through the feed inlet on the middle plate, impurities are blocked by the filter plates and are retained in the filter cavity, and the filtered molten plastic flows into the discharge cavity through the flow guide holes on the flow guide plate and then flows out through the discharge hole; the scraper component moves from right to left to discharge the impurities retained in the filter cavity through the slag outlet without manually cleaning the filter plate or discharging slag, so that the efficiency is high.

Drawings

FIG. 1 is a schematic structural view of a plastic melt filtration apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the plastic melt filtration device of FIG. 1 from another perspective;

FIG. 3 is a longitudinal cross-sectional view of the plastic melt filtration device of FIG. 1;

FIG. 4 is a transverse cross-sectional view of the plastic melt filtration device of FIG. 1;

Fig. 5 is a schematic structural diagram of the housing according to the present invention;

FIG. 6 is a top view of the housing of FIG. 5;

FIG. 7 is a sectional view taken in the direction H-H in FIG. 6;

fig. 8 is a schematic structural view of an intermediate plate in an embodiment of the present invention;

FIG. 9 is a schematic view of the intermediate plate of FIG. 8 from another perspective;

fig. 10 is a schematic structural view of an upper plate in an embodiment of the present invention;

Figure 11 is an exploded view of a doctor assembly in an embodiment of the invention;

fig. 12 is a schematic structural view of a doctor assembly in an embodiment of the invention;

fig. 13 is a schematic structural view of a baffle in an embodiment of the present invention;

FIG. 14 is an enlarged partial view of portion A of FIG. 13;

Fig. 15 is a top view of the baffle of fig. 13;

FIG. 16 is an enlarged partial view of portion B of FIG. 15;

FIG. 17 is a cross-sectional view taken in the direction of C-C in FIG. 15;

FIG. 18 is an enlarged partial view of section E of FIG. 17;

FIG. 19 is a cross-sectional view taken in the direction D-D of FIG. 15;

FIG. 20 is an enlarged partial view of portion F of FIG. 19;

FIG. 21 is a schematic view of a filter plate according to an embodiment of the present invention;

FIG. 22 is an enlarged partial view of portion M of FIG. 21;

FIG. 23 is a schematic view of a filter hole structure of a filter plate according to an embodiment of the present invention;

FIG. 24 is a top view of the filter plate of FIG. 23;

FIG. 25 is a cross-sectional view taken in the direction of N-N in FIG. 24;

fig. 26 is a schematic view of the use state of the baffle and the filter plate in the embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

as shown in fig. 1 to 26, in an embodiment of the plastic melting and filtering device of the present invention, the plastic melting and filtering device includes an upper plate 31, a middle plate 32 and a lower plate 33, the middle plate 32 is provided with a feeding port 321, a discharging port 322 and a slag hole 323, the upper plate 31, the lower plate 33 is provided with a discharging chamber 001 communicated with the discharging port 322, the upper plate 31 and the middle plate 32 are sequentially provided with a flow guide plate 20 and a filter plate 10 from top to bottom, the lower plate 33 and the middle plate 32 are sequentially provided with a flow guide plate 20 and a filter plate 10 from bottom to top, a filter chamber 002 is formed between the two filter plates 10, the feeding port 321, the slag hole 323 and the filter chamber 002 are communicated, a scraper assembly 40 capable of reciprocating left and right is further provided between the two filter plates 10, and scraper blades 42 abutting against the filter plates 10 are respectively installed on the upper and lower surfaces. Preferably, a feed pipe 3211 is installed at the feed port 321, and a discharge pipe 3221 is installed at the discharge port 322. In the application, the filter plate and the guide plate are fixed among the upper plate, the middle plate and the lower plate and do not move or rotate, the structure is simple, the damage is not easy to damage, and the reliability is high; molten plastic flows into the filter cavity between the two filter plates through the feed inlet on the middle plate, impurities are blocked by the filter plates and are retained in the filter cavity, and the filtered molten plastic flows into the discharge cavity through the flow guide holes on the flow guide plate and then flows out through the discharge hole; the scraper component moves from right to left to discharge the impurities retained in the filter cavity through the slag outlet without manually cleaning the filter plate or discharging slag, so that the efficiency is high.

In an embodiment of the present application, preferably, the upper plate 31 and the lower plate 33 are further provided with a plurality of electric heating rod mounting holes 311, respectively, and electric heating rods are mounted in the electric heating rod mounting holes 311, when the plastic melting and filtering device is restarted to work, solid plastic in the casing is melted by heating with the electric heating rods, and then the feeding device is started to feed the molten plastic to be filtered through the feeding hole. Preferably, a slag discharging block 50 is further mounted at a position corresponding to the slag outlet 323 on the housing, a slag discharging channel 51 communicated with the slag outlet 323 is arranged on the slag discharging block 50, a slag discharging rod 52 is further mounted on the slag discharging block 50, the slag discharging rod 52 is driven by a hydraulic cylinder 53, an air cylinder or an electric push rod to close or open the slag discharging channel 51, specifically, a slag discharging port with the same shape as the slag outlet 323 is arranged on the slag discharging rod, the slag discharging channel 51 is opened when the slag discharging port on the slag discharging rod 52 is overlapped with the slag discharging channel 51, and the slag discharging channel 51 is closed when the slag discharging port on the slag discharging rod 52 is staggered with the slag discharging channel 51; the opening or closing of the slag discharge channel can be controlled according to the amount of the filtered impurities or the preset time, and the control process is not repeated. In the application, the plastic melting and filtering device adopts a double-screen-plate filtering structure, and the upper and lower groups of filtering plates and flow guiding plates can greatly increase the through surface, so that the production efficiency or the capacity can be greatly improved; the heating devices arranged on the upper plate and the lower plate can better melt solidified plastics when the equipment is restarted for working after being stopped for a long time, and the equipment is restarted as soon as possible to recover production.

In an embodiment of the present application, preferably, the scraper assembly 40 is configured to be installed between two filter plates 10 made of molten plastic to clean impurities on the surfaces of the filter plates, the scraper assembly 40 includes a scraper carrier 41 and a scraper blade 42, the scraper blade 42 is installed on the upper surface and the lower surface of the scraper carrier 41 respectively, a plurality of pressure spring installation holes 43 are further formed in the upper surface 41 and the lower surface 42 of the scraper carrier 41 respectively, a pressure spring 44 is installed in each pressure spring installation hole 43, and the pressure spring 44 is configured to press the scraper blade 42 against the surfaces of the filter plates 10. The pressure spring 44 can be used for compensating the gap between the scraper blade and the filter plate caused by the abrasion of the scraper blade, so that the contact between the scraper blade and the filter plate is changed into soft contact and flexible contact by hard contact, the friction force can be reduced, and the purpose of prolonging the service life of the scraper blade and the filter plate is achieved. A scraper subassembly for plastics melting is filterable in this application, through the upper surface at the scraper carrier, a plurality of pressure spring mounting holes have still been seted up respectively to the lower surface, the pressure spring in the pressure spring mounting hole can support the scraper to press on the surface of filter, when using the scraper wearing and tearing for a long time, elastic deformation through the pressure spring can guarantee that scraper and filter surface contact are good, make the scraper can clear up the filter surface effectively, can not influence the clearance on filter surface because of the wearing and tearing of scraper.

In the doctor assembly according to an embodiment of the present application, preferably, the upper surface and the lower surface of the doctor carrier 41 are further respectively provided with blade mounting grooves 413, and the doctor blade 42 can float in the blade mounting grooves 413 along the axial direction of the compression spring 44 under the action of the compression spring 44. Preferably, the side surface of the scraper carrier is further provided with a push rod connecting groove 45, the scraper carrier 41 is connected with a push rod 48 and a push plate 49 through the push rod connecting groove 45, the push plate 47 can be connected with a telescopic rod 61 of a hydraulic cylinder 60, the scraper assembly 40 can be driven by the hydraulic cylinder to reciprocate between the two filter plates, and the driving mechanism of the scraper assembly is not described herein again. Preferably, the scraper carrier 41 is further provided with a through hole 46 and a guide hole 47 which penetrate through the left side surface and the right side surface of the scraper carrier; the scraper component moves leftwards and rightwards to discharge impurities retained in the filtering cavity through the slag outlet, the plastic in a molten state can flow through the through flow hole when the scraper component moves leftwards and rightwards, the scraper component can move leftwards and rightwards in the filtering cavity through the through flow hole, and the filter can continuously filter the molten plastic.

In the scraper assembly according to one embodiment of the present application, preferably, the filter plate 10 includes a stainless steel substrate or a common steel substrate, one side of the substrate is provided with a plurality of first filter holes 11, the depth of the first filter holes 11 is not less than three-fourths of the thickness of the substrate, a plurality of second filter holes 12 are provided on the bottom plate of the first filter holes 11, and the depth of the second filter holes 12 is not more than one-fourth of the thickness of the substrate; a third filtering hole 13 which is coaxial with the second filtering hole 12 is also arranged on the bottom plate of the second filtering hole 12, the diameter of the third filtering hole is smaller than that of the second filtering hole, and the third filtering hole penetrates through the other side of the substrate; preferably, the guide plate 20 includes a stainless steel substrate or a common steel substrate, the substrate is provided with guide holes 201 corresponding to the first filter holes 11 on the filter plate 10, a line connecting centers of three adjacent guide holes 201 is a regular triangle, a diameter of each guide hole 201 is larger than a diameter of each first filter hole 11, after the guide plate 20 is aligned with the filter plate 10, the center of each guide hole 20 is located at a midpoint of a line connecting centers of two adjacent first filter holes 11, each guide hole 201 is at least communicated with two adjacent first filter holes 11, one surface of the guide plate 20, which is tightly attached to the filter plate 10, is further provided with a transverse guide groove 21 and a vertical guide groove 22, and the transverse guide groove 21 and the vertical guide groove 22 communicate each guide hole 201 and each first filter hole 11 with each other. According to the filter plate, the first filtering holes, the second filtering holes and the third filtering holes are arranged in a stepped manner, when molten plastic is filtered, the molten plastic flows to the first filtering holes from the third filtering holes, and the diameters and the hole depths of the third filtering holes, the second filtering holes and the first filtering holes are sequentially increased, so that the resistance of the molten plastic after flowing out of the third filtering holes can be reduced, and the circulation efficiency of the molten plastic in the filtering process can be improved; the stepped filtering structure has the advantages of high structure strength, difficult damage and high reliability; the filter holes on the material inflow side are small and not easy to block; the flow guide plate is provided with the flow guide holes corresponding to the filter holes on the filter plate, each flow guide hole corresponds to more than two filter holes, each filter hole is ensured to correspond to the corresponding flow distribution hole, and each filter hole cannot be completely blocked; by arranging the transverse guide grooves and the vertical guide grooves which enable the guide holes to be mutually communicated, the molten plastic after passing through the filter plate can be divided by the transverse guide grooves and the vertical guide grooves and then flows out through the guide holes, so that the molten plastic after passing through the filter plate has a larger outflow area, the flow resistance of the molten plastic can be further reduced to improve the flow speed, and the filtering efficiency is improved; the stepped filtering structure on the filtering plate is matched with the guide holes, the transverse guide grooves and the vertical guide grooves which are arranged on the guide plate, so that the flow resistance of the filtered molten plastic is obviously reduced, and the flow speed of the molten plastic is obviously improved. A water conservancy diversion hole on the guide plate in this application corresponds the filtration pore of crossing more than two on the filter, and the quantity in water conservancy diversion hole on the reducible guide plate from this avoids making the less drill bit that causes in the water conservancy diversion hole course of working on the guide plate because of the water conservancy diversion hole is too much, too close. In one embodiment of the present application, preferably, the diameter of the first filter hole 11 is greater than 8 times the diameter of the second filter hole 12, and the diameter of the second filter hole 12 is greater than or equal to 2 times the diameter of the third filter hole 13, so that the filter plate structure has high strength and is not easy to block; preferably, the diameter of the first filter hole 11 is 4mm to 7mm, the diameter of the second filter hole 12 is 0.4mm to 0.7mm, the diameter of the third filter hole 13 is 0.2mm to 0.35mm, and the second filter holes 12 are uniformly arranged on the bottom plate of the first filter hole 11 centering on the central axis of the first filter hole 11. Set up cascaded filtration hole on the filter in this application for the melting plastics filters the in-process resistance little to first filtration hole outflow after the third filters the hole, and the flow efficiency is high.

in an embodiment of the present application, preferably, as shown in fig. 26, each of the diversion holes 201 is at least communicated with 4 adjacent first filtering holes 11, which can ensure that the diversion holes are communicated with each other and reduce the number of the diversion holes, so that the diversion plate has high structural strength and is not easy to damage. Preferably, the diversion holes 201 penetrate through the base plate of the diversion plate, and the groove depths of the transverse diversion grooves 21 and the vertical diversion grooves 22 are not more than one tenth of the thickness of the base plate of the diversion plate. Preferably, a transverse diversion trench 21 is arranged between two adjacent rows of diversion holes 201 on the base plate of the diversion plate, and the transverse diversion trench 21 connects the two rows of diversion holes 201 with each other; more than two vertical diversion grooves 22 are formed in the base plate of the diversion plate, the vertical diversion grooves 22 are used for communicating the transverse diversion grooves 21, and therefore diversion holes in the base plate of the diversion plate can be communicated with one another. Preferably, the width of the transverse guiding groove 21 is equal to the distance between the center connecting lines of two adjacent rows of guiding holes 201, that is, the groove edge of each transverse guiding groove 21 passes through the center of each guiding hole, so that the molten plastic passing through the filter plate has a larger outflow area.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (9)

1. the utility model provides a plastics melting filter equipment, its characterized in that, the casing includes upper plate, intermediate lamella and hypoplastron, be equipped with feed inlet, discharge gate and slag notch on the intermediate lamella, the upper plate all be equipped with on the hypoplastron with the ejection of compact chamber that the discharge gate is linked together, the upper plate with from last guide plate, filter of having set gradually under to between the intermediate lamella, the hypoplastron with guide plate, filter, two have set gradually from supreme down between the intermediate lamella be formed with the filter chamber between the filter, the feed inlet the slag notch with the filter chamber is linked together, two reciprocating motion's scraper subassembly about still being equipped with between the filter, the upper and lower surface of scraper subassembly install respectively with the scraper blade that the filter is contradicted.

2. a plastic melt filtration device as defined in claim 1, wherein: the utility model discloses a slag tap, including the casing, the slag tap is provided with the slag notch, the casing on with the position that the slag notch corresponds still installs row's sediment piece, arrange on the sediment piece be equipped with the communicating row's of slag notch passageway, arrange and still install on the sediment piece and arrange the sediment pole, arrange the sediment pole and can seal or open by pneumatic cylinder or cylinder drive arrange the sediment passageway.

3. a plastic melt filtration device as defined in claim 2, wherein: the scraper subassembly is used for installing and clears up the surperficial impurity of filter between two melting plastics filters, the scraper subassembly includes scraper carrier and scraper blade, install respectively the upper surface of scraper carrier, lower surface the scraper blade, a plurality of pressure spring mounting holes have still been seted up respectively to the upper surface of scraper carrier, lower surface, each install the pressure spring in the pressure spring mounting hole respectively, the pressure spring be used for with the scraper blade supports presses the surface at the filter, the pressure spring can be used to compensate the clearance between scraper blade and the filter that causes because of scraper blade wearing and tearing.

4. A plastic melt filtration device as defined in claim 3, wherein: blade mounting grooves are respectively formed in the upper surface and the lower surface of the scraper carrier, a push rod connecting groove is further formed in the side surface of the scraper carrier, and a push rod mounting hole for a push rod of the scraper assembly to penetrate through is further formed in the middle plate; and the scraper carrier is also provided with a through flow hole and a guide hole which penetrate through the left side surface and the right side surface of the scraper carrier.

5. A plastic melt filtration device as defined in claim 2, wherein: the filter plate comprises a substrate, a plurality of first filter holes are formed in one side of the substrate, the depth of each first filter hole is not less than three-fourths of the thickness of the substrate, a plurality of second filter holes are formed in a bottom plate of each first filter hole, and the depth of each second filter hole is not more than one-fourth of the thickness of the substrate; and a third filtering hole which is coaxial with the second filtering hole is also arranged on the bottom plate of the second filtering hole, the diameter of the third filtering hole is smaller than that of the second filtering hole, and the third filtering hole penetrates through the other side of the substrate.

6. a plastic melt filtration device as defined in claim 5, wherein: the flow guide plate comprises a base plate, flow guide holes used for corresponding to first filtering holes in the filter plate are arranged on the base plate, connecting lines of centers of three adjacent flow guide holes are regular triangles, the diameter of each flow guide hole is larger than that of each first filtering hole, after the flow guide plate is aligned with the filter plate, the centers of the flow guide holes are positioned at the middle point of the connecting lines of the centers of two adjacent first filtering holes, each flow guide hole is at least communicated with two adjacent first filtering holes, a transverse flow guide groove and a vertical flow guide groove are further formed in the surface, close to the filter plate, of the flow guide plate, and the transverse flow guide grooves and the vertical flow guide grooves communicate the flow guide holes and the first filtering holes with each other.

7. A plastic melt filtration device as defined in claim 6, wherein: the transverse diversion groove is arranged between two adjacent rows of diversion holes on the base plate of the diversion plate and communicates the two rows of diversion holes with each other; the base plate is provided with more than two vertical diversion grooves, and the vertical diversion grooves are used for communicating the transverse diversion grooves with each other.

8. a plastic melt filtration device as defined in claim 7, wherein: the width of the transverse diversion trench is equal to the distance between the central connecting lines of two adjacent rows of the diversion holes.

9. a plastic melt filtration device as defined in claim 7, wherein: the diversion hole penetrates through the base plate of the diversion plate.