TWI678238B - Movable scraper for cleaning filter - Google Patents

Abstract

The invention relates to a movable cleaning blade for a filter screen, comprising: a body provided with a group of holes for a rod body to pass through; at least one cutter, each of which is movably disposed on the body, and each of the cutters includes a ready-to-contact In the knife section of a filter.

Description

Filter cleaning activity scraper

The invention relates to a movable cleaning blade for a filter screen.

Using waste plastic products as raw materials, the raw materials will be put into the recycling granulation system for preliminary crushing and drying, and then fed into the system's hot melt extrusion screw to heat it to a certain temperature with fluidity, and then the hot melt plastic will pass through the filtration system Non-plastic materials are filtered out by the filtration system. Then, the filtered plastic is extruded from the template granulation device of the recycling granulation system, cooled and pelletized. However, the dross on the filter screen will gradually accumulate, resulting in low filtration efficiency. Therefore, the slag on the screen must be replaced frequently or scraped off with a knife.

The knives of the conventional technology are fixed knives, so the position and angle of the knives relative to the screen are fixed. However, when the tool is worn over a long period of time, a gap will be created between the tool and the filter screen, which will not fit tightly, resulting in a reduction in the effect of slag removal. In addition, the hardness of the cutting tools of the conventional technology is greater than that of the filter screen, which causes the tool to easily scratch the filter screen and cause loss of the filter screen, and the wear between the tool and the filter screen will gradually increase due to the wear of the tool, resulting in scraping efficiency. Low, and when the tool is worn, the entire tool must be replaced, increasing the cost of use.

Therefore, it is necessary to provide a novel and progressive filter cleaning movable blade to solve the above problems.

The main object of the present invention is to provide a movable cleaning blade for a filter, which is a movable blade.

To achieve the above object, the present invention provides a filter cleaning movable scraper, which includes: a body provided with a group of holes for a rod body to pass through; and at least one cutter, each of which is movably disposed on the body, and each of the cutters The utility model comprises a knife part which can be contacted with a filter screen; wherein the group of holes defines an axial direction, the body defines a circumferential direction around the axis, and the body is provided with a plurality of radial extensions along the circumferential direction outside the group of holes. Each of the knives is pivoted on one side of one of the arms, and the knives of the knives project toward the circumferential direction; each of the knives further includes a seat pivoted on the body, and the knives of the knives The detachable portion is provided on the seat body; the circumferential direction passes through a first side portion of each of the arm portions and a second side portion provided on the opposite side of the first side portion, and the seat body faces the cutter. Viewed from a thickness direction of the blade portion, the first side portion is located on a forward side of the body around the axial direction, and the second side portion is located on a reverse side of the body around the axial direction, and each of the cutters is disposed therein. A second side portion of the arm portion.

1‧‧‧ Filter cleaning activity scraper

2‧‧‧ shaft

3‧‧‧ Filter

4‧‧‧filtration device

22‧‧‧ seat

221‧‧‧ lug

222‧‧‧ bevel

223‧‧‧Second Guide Bevel

10‧‧‧ Ontology

11‧‧‧ group holes

12‧‧‧ arm

121‧‧‧ base

122‧‧‧ Cover

123‧‧‧First side

124‧‧‧ second side

13‧‧‧ notch

14‧‧‧ boundary

15‧‧‧Slag hole

151,152‧‧‧ opening

20‧‧‧Cutter

21‧‧‧Blade

211‧‧‧first guide slope

24‧‧‧Blade

25‧‧‧ Recess

30‧‧‧ Shaft

40‧‧‧Dust removal department

41‧‧‧Filter body

42‧‧‧Drive

43‧‧‧ chamber

44‧‧‧feeding space

45‧‧‧Discharging space

46‧‧‧Discharging mechanism

47‧‧‧cutting mechanism

A‧‧‧Axial

H‧‧‧center

L‧‧‧ the first reference line

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention.

FIG. 2 is a top view of a preferred embodiment of the present invention.

3 and 4 are side-view diagrams of a preferred embodiment of the present invention.

Fig. 5 and Fig. 6 are sectional operation diagrams of the A-A line segment in Fig. 3.

FIG. 7 is a cross-sectional view of a filter device installed in a preferred embodiment of the present invention.

FIG. 8 is a perspective view of another preferred embodiment of the present invention.

FIG. 9 is a sectional view of another preferred embodiment of the present invention.

The following only illustrates the possible implementation aspects of the present invention by way of examples, but is not intended to limit the scope of the present invention to be protected, which will be described first.

Please refer to FIG. 1 to FIG. 7, which shows a preferred embodiment of the present invention. The filter cleaning movable blade 1 of the present invention includes a body 10 and at least one cutter 20.

The body 10 is provided with a set of holes 11 for a rod body 2 to pass through; each of the cutters 20 is movably disposed on the body 10, and each of the cutters 20 includes a knife portion 21 that can be contacted with a filter 3. In this embodiment, each of the knives 20 can be pivoted relative to the main body 10; in other embodiments, each of the knives can be translated relative to the main body. According to this, each of the knives 20 can deflect movably toward the filter screen 3, so that the knife portion 21 of each of the knives 20 continues to closely fit the filter screen 3. Specifically, each of the knives 20 may be pressed by the external force such as the pushing force of the slag, and the blade portion 21 of each of the knives 20 continues to be closely pressed against the filter screen 3, so that even if the blade portion 21 of each of the knives 20 After long-term wear and tear, the filter screen 3 can be continuously and tightly pressed.

Preferably, the hardness of the blade portion 21 of each of the cutters 20 ranges from HRC 40.00 to HRC 50.00, so that the hardness is lower than the strainer 3 without wearing the strainer 3.

The group of holes 11 defines an axial direction A, and the body 10 defines a circumferential direction around the axis A. The body 10 is provided with a plurality of arms 12 extending radially along the circumferential direction outside the group of holes 11, and each of the cutters 20 The arm portion 12 is pivoted on one side of the arm portion 12, and the blade portion 21 of each of the cutters 20 protrudes toward the circumferential direction to improve the cleaning efficiency. In this embodiment, each arm portion 12 extends linearly. The plurality of arm portions 12 are arranged in a radioactive manner; in other embodiments, each of the arm portions may also be bent and extended. In detail, each of the cutters 20 further includes a pivot 10 disposed on the body 10. The seat body 22, the knife portion 21 of each of the cutters 20 are detachably provided on the seat body 22, so as to facilitate replacement of the knife portion 21 of each of the cutters 20.

One side of the seat body 22 is provided with at least one knife portion 21 of the cutter 20, and the seat body 22 is provided with an inclined surface 222 on the opposite side of the knife portion 21 provided with at least one of the knife 20. The inclined surface 222 is convenient for pressing the blade portion 21 of the at least one cutter 20 on the filter screen 3. Preferably, each of the cutters 20 further includes a shaft member 30 penetrating the seat 22 and the body 10, the shaft member 30 defines an axis, and the size of the inclined surface 222 is along the axis of the shaft member 30 from the body. The outside of 10 gradually expands to the inside. To further explain, the inclined surface 222 is gradually recessed from the outside to the inside of the seat 22 along the axis, and the side of the base 22 is provided with at least one blade portion 21 of the cutter 20, which is beneficial to facing the blade portion 21 of the at least one blade The strainer 3 is pressed against.

In detail, the base 22 is T-shaped. The base 22 is provided with a lug 221, and the shaft 30 passes through the lug 221 and the arm portion 12 to facilitate installation and deflection.

Preferably, the seat body 22 and the knife portion 21 of at least one cutter 20 are disposed toward each other in the axial direction A. The knife portion 21 and the seat body 22 of at least one cutter 20 are provided with a transverse direction to the axial direction. AOpen the chip removal section 40. Preferably, the chip discharge portion 40 is an arc groove; the chip discharge portion 40 extends linearly along the axis, so that the slag is discharged from the arc groove to the outside by centrifugation.

In detail, the base 22 is provided with a recessed portion 25, at least one of the cutter portions 21 of the cutter 20 is disposed in the recessed portion 25, and a cutting edge 24 of one of the cutter portions 21 of the at least one cutter 20 extends beyond the recessed portion 25. Each of the arm portions 12 is provided with a notch 13, and each of the cutters 20 is provided in the notch 13. Viewed from the side, the body 10 has two opposite side surfaces, and the body 10 defines two boundary lines 14 and the two boundaries. The line 14 passes through and extends along one of the different sides, and each of the knives 20 is located in the notch 13 and between the two boundary lines 14 in an initial position to facilitate storage and avoid exposing each of the knives 20 Easily damaged.

It is worth mentioning that the circumferential direction passes through one first side portion 123 of each of the arm portions 12 and a second side portion 124 provided on the opposite side of the first side portion 123 from the base 22 toward at least one Viewed from a thickness direction of the blade portion 21 of the cutter 20, the first side portion 123 is located on a forward side of the body 10 about the axial direction A, and the second side portion 124 is located on the body 10 about the axial direction. On a reverse side of A, each of the cutters 20 is disposed on one of the second side portions 124 of the arm portion 12; in detail, each of the arm portions 12 defines a radial point passing through the center point H of the group of holes 11 and radially The extended first reference line L, the first side portion 123 and the second side portion 124 are located on two opposite sides of the first reference line L, so that the slag can be discharged by the set of holes 11 radially outwards in a centrifugal manner .

It is worth mentioning that the filter cleaning movable scraper 1 is installed in a filter device 4 to scrape off the filter residue attached to the filter 3. In detail, the filter device 4 includes the filter screen 3, a filter body 41, a filter cleaning movable blade 1 as described above, and a driving device 42 (such as a motor). The filter body 41 includes a chamber 43 and houses the filter screen 3. The filter body 41 may be a frame containing the filter device 4 and other peripheral equipment or mechanisms. The filter screen 3 is defined in the chamber 43. A feeding space 44 and at least one discharging space 45 are output. The driving device 42 includes the rotatable rod body 2. The rod body 2 may be a screw. The filter cleaning movable blade 1 is sleeved on the rod body 2 with the group of holes 11 and the filter cleaning movable blade 1 is at least A blade portion 21 of the cutter 20 can be pressed against the filter screen 3. In this embodiment, the number of the filter screens 3 is two, the number of the filter cleaning movable blades 1 is two, and the feeding space 44 is defined between the two filter screens 3. The filtering device 4 further includes a discharging mechanism 46 (such as a dewatering material-making mechanism) that communicates with the feeding space 44. The discharging mechanism 46 can squeeze and discharge the slag from the feeding space 44 through, for example, a spiral blade mechanism. The outside is cut by a material feeding mechanism 47. To further explain, the filtering device 4 may be, for example, the filtering device 4 of a granulator, a recycling device, or the like.

Please refer to FIGS. 8 to 9, which show another preferred embodiment of the present invention. The difference from the previous preferred embodiment is that at least one of the arm portions 12 is provided with a slag discharge hole 15. In this embodiment, , Each of the arms The part 12 is provided with the slag discharge hole 15, and the slag discharge hole 15 is provided with at least two openings 151 and 152 that open in different directions, and one of the openings 151 is opened toward the chip discharge part 40 so that the slag discharge during scraping operation The hole 15 can be used to discharge the slag through to avoid accumulation of the slag in each of the cutters 20. In addition, the slag is discharged from the opening 151 of the slag discharge hole 15 toward the opening 152 by centrifugation. Preferably, the chip removing portion 40 includes at least one first inclined surface 211 provided on the blade portion 21 of at least one of the tools 20 and at least one blade portion provided on the base 22 and provided with at least one of the tools 20 The second guide slopes 223 on the opposite side of 21, each of the first guide slopes 211 and the second guide slopes 223 have different slopes, and each of the first guide slopes 211 and each of the second guide slopes 223 are located at the cutting edge. Between 24 and one of the openings 151 of the slag discharge hole 15, in this embodiment, the number of the at least one second guide slope 223 is plural, and the slopes of the plurality of second guide slopes 223 are different, which is helpful for guiding the The cutting edge 24 is discharged to the slag discharge hole 15.

In addition, at least one of the arm portions 12 includes a base portion 121 and a cover portion 122. The cover portion 122 is detachably provided on the base portion 121. The base 22 is pivotally disposed on the base portion 121. The base portion 121 and the cover portion 122 The slag discharge holes 15 are co-formed, and the slag discharge holes 15 can be cleaned by removing the cover 122. In other embodiments, the cover portion may be provided with a perforation communicating with the slag discharge hole to facilitate slag discharge.

In summary, the filter cleaning movable scraper of the present invention can be deflected relative to the body through each of the cutters, so as to be continuously tightly pressed to the filter to achieve high-efficiency cleaning.

Claims (7)

A filter cleaning movable scraper comprises: a body provided with a group of holes for a rod body to pass through; at least one cutter, each of the cutters is movably disposed on the body, and each of the cutters includes a filter which can be contacted with The knife part; wherein the group of holes defines an axial direction, the body defines a circumferential direction around the axis, the body is provided with a plurality of arms extending radially along the circumferential direction outside the group of holes, and each of the tools is pivoted On one side of one of the arms, at least one blade portion of the cutter protrudes toward the circumferential direction; each of the blades further includes a seat body pivotally mounted on the body, and at least one blade portion of the cutter is detachably provided. On the seat body; the circumferential direction passes through a first side portion of each of the arm portions and a second side portion provided on the opposite side of the first side portion, from the seat body toward at least one blade portion of the cutter Viewed from a thickness direction, the first side portion is located on a forward side of the body around the axial direction, the second side portion is located on a reverse side of the body around the axial direction, and each of the cutters is disposed on one of the arms Part of the second side. The filter cleaning movable scraper according to claim 1, wherein the seat body and at least one knife portion of the cutter are disposed toward the axial direction, and at least one knife portion and the seat body are provided with a transverse direction to the axial direction. Open chip removal section. The filter cleaning movable scraper according to claim 2, wherein at least one of the arm portions is provided with a slag discharge hole, the slag discharge hole is provided with at least two openings opening in different directions, and one of the openings faces the chip removal portion open. The filter cleaning movable scraper according to claim 3, wherein at least one of the arm portions includes a base portion and a cover portion, and the cover portion is detachably provided on the base portion, and the base portion and the cover portion form the slag discharge hole. . The filter cleaning movable scraper according to claim 1, wherein one side of the base body is provided with at least one knife portion of the cutter, and the base body is provided with an inclined surface on the opposite side where at least one knife portion of the cutter is provided. The filter cleaning movable scraper according to claim 2, wherein the base body is provided with a concave portion, at least one blade portion of the cutter is provided in the concave portion, and at least one of the blade portions of the blade extends beyond the concave portion; the base body One side of the knife is provided with at least one knife portion of the tool, and the seat body is provided with an inclined surface on the opposite side of the knife portion with the at least one knife; the knife further includes a shaft member penetrating the seat body and the body, The shaft member defines an axis, and the size of the inclined surface gradually expands from the outside to the inside of the body along the axis; the seat body is T-shaped, the seat body is provided with a lug, and the shaft member passes through the lug and the An arm portion; the chip discharge portion is an arc groove; the inclined surface is gradually recessed from the outer side to the inner side of the base body along which the blade is provided with at least one blade portion of the cutter; each of the arm portions is recessed laterally A notch, each of the cutters is disposed in the notch, viewed from the side, the body has two oppositely disposed sides, the body defines two boundary lines, and the two boundary lines pass through and extend along one of the sides that are different , Each of the cutters is located in the notch and each of the arms is between the two boundary lines in an initial position Other definitions of a center point of the series of holes and the first reference line extending radially through the said first side and said second side portion located on two opposite sides of the first reference line. The filter cleaning movable scraper according to claim 4, wherein the base body is provided with a concave portion, at least one blade portion of the cutter is disposed in the concave portion, and at least one of the blade portions of the cutter extends beyond the concave portion; the chip discharge The part includes at least a first guide inclined surface provided on at least one knife portion of the tool, and at least one second guide inclined surface provided on the opposite side of the seat body with at least one knife portion of the tool, each of the first guide inclined surfaces. Different from the slope of each of the second guide slopes, each of the first guide slopes and each of the second guide slopes are located between the blade tip and the opening of one of the slag discharge holes; one side of the base body is provided with at least A cutter portion of the cutter, the seat body is provided with an inclined surface on the opposite side of the cutter portion provided with at least one of the cutter; the cutter further includes a shaft member penetrating the seat body and the body, and the shaft member defines an axis , The inclined surface gradually expands from the outside to the inside of the body along the axis; the inclined surface gradually extends from the outside to the inside along the axis to a side of the seat provided with at least one blade portion of the cutter; the seat is T The base is provided with a lug, and the shaft part passes through the lug and the arm portion; each of the arm portions is lateral A notch is provided, and each of the cutters is disposed in the notch. Viewed from the side, the body has two oppositely arranged sides, the body defines two boundary lines, and the two boundary lines pass through and along one of the different sides. Extension, each of the cutters is located in the recess and between the two boundary lines at an initial position; each of the arms defines a first reference line extending radially through the center point of the group of holes, the The first side portion and the second side portion are located on opposite sides of the first reference line.