CN112337160A

CN112337160A - Filter screen fixing structure

Info

Publication number: CN112337160A
Application number: CN202011377138.5A
Authority: CN
Inventors: 许志宏; 丁仁平; 曹福贤; 肖翔; 王波
Original assignee: China Xuan Paper Co ltd
Current assignee: China Xuan Paper Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-02-09

Abstract

The invention belongs to the technical field of papermaking equipment, and particularly relates to a filter screen fixing structure which comprises a frame body in a cylindrical frame structure integrally, wherein hoops are arranged at two ends of the frame body, a filter screen is additionally arranged on the periphery of the frame body, and the hoops tightly hoop and fix the edge of the filter screen at the ring of the frame body. The filter screen fixing frame is simple and reliable in structure, and the filter screen can be reliably fixed on the periphery of the frame body by respectively arranging the hoops at the two ends of the frame body; the hoop is convenient to install and disassemble, and therefore the convenience of replacing the filter screen can be guaranteed.

Description

Filter screen fixing structure

Technical Field

The invention belongs to the technical field of papermaking equipment, and particularly relates to a filter screen fixing structure.

Background

Chinese patent CN107744683A discloses a filter device, in which a filter screen is enclosed to form a concave cavity, part of the cavity of the concave cavity is immersed in the liquid to be filtered, and the filtrate in the immersed cavity of the concave cavity is discharged through a liquid discharge pipe. Because can bond a large amount of fibers on the wire side of filter screen, reduce filtration efficiency, therefore need regularly to change the filter screen, how reliably when maintaining the inside cavity of filter screen, promote the convenience that the filter screen was changed, become the problem that awaits a urgent need to be solved.

Disclosure of Invention

The invention aims to provide a filter screen fixing structure which is reliable in structure and convenient to mount and dismount.

In order to realize the purpose, the invention adopts the technical scheme that: a filter screen fixing structure comprises a frame body which is integrally of a columnar frame structure, wherein two ends of the frame body are provided with hoops, a filter screen is additionally arranged on the periphery of the frame body, and the hoops tightly hoop and fix the edge of the filter screen at the position of a ring.

Compared with the prior art, the invention has the following technical effects: the structure is simple and reliable, and the hoops are respectively arranged at the two ends of the frame body, so that the filter screen can be reliably fixed on the periphery of the frame body; the hoop is convenient to install and disassemble, and therefore the convenience of replacing the filter screen can be guaranteed.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged schematic view of section A of FIG. 1;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is an enlarged schematic view of section B of FIG. 3;

FIG. 5 is a schematic perspective view of a molding according to an embodiment;

FIGS. 6, 11-13 are enlarged schematic views of section C of FIG. 5;

FIG. 7 is a cross-sectional view of a crimp portion of a crimp strip according to an embodiment;

FIG. 8 is a schematic cross-sectional view of an end of a body of a center press bar according to one embodiment;

FIG. 9 is a schematic cross-sectional view of a central portion of a molding body according to an embodiment;

FIG. 10 is a schematic view of another cross-section of a central portion of a molding body according to an embodiment.

In the figure: 10. the filter screen comprises a frame body, 11 end plates, 12 surrounding plates, 20 hoops, 21 locking lugs, 30 pressing strips, 30a pressing part, 30b pressing strip bodies and 40 filter screens.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

A filter screen fixing structure comprises a frame body 10 which is of a cylindrical frame structure integrally, hoops 20 are arranged at two ends of the frame body 10, a filter screen 40 is attached to the periphery of the frame body 10, as shown in the attached drawing 1, the hoops 20 tightly hoop and fix the edge of the filter screen 40 at the position of a ring, the filter screen 40 can be reliably fixed outside the frame body 10, and when too many fibers are bonded on the surface of the filter screen 40, the hoops 20 are opened, so that the filter screen 40 can be conveniently detached from the frame body 10.

In order to ensure the filtering quality, a pressing strip 30 extending along the bus direction of the frame body 10 is arranged between the two hoop rings 20, the filter screen 40 is circumferentially arranged around the frame body 10 and covers the circumferential surface of the frame body, and a seam or a superposition section of the filter screen 40 is clamped between the pressing strip 30 and the frame body 10. Therefore, the seam or the overlapped section of the filter screen 40 is reliably connected with the pressing strip 30 by the frame body 10, and the situation that slurry which is not filtered enters the inner side of the frame body 10 from the connecting gap of the filter screen 40 can be effectively avoided.

As shown in fig. 4-6, 8-10 and 12, the bead 30 includes a bead body 30b, the bead body 30b is provided with a reinforcing rib 31, and the rib body of the reinforcing rib 31 is arranged in the radial direction of the frame body 10, and is a protrusion with a high middle part and low two ends. As shown in fig. 5 in particular, the reinforcing ribs 31 are arranged along the length direction of the bead 30, i.e., along the axial direction of the frame body 10. The reinforcing ribs 31 can prevent gaps from existing at the joints of the filter screens 40 caused by the arching of the pressing strips 30, so that the condition of low filtering quality is caused.

The middle of the reinforcing rib 31 has a large protrusion height, and the two ends have small protrusion heights or have no protrusions. Referring to fig. 9 and 10, a cross section of the middle portion of the bead body 30b in the embodiment is shown, and fig. 8 is a cross section of the end portion of the bead body 30b in the embodiment. In the embodiment shown in fig. 9 and 10, the end faces of the reinforcing ribs 31 are also high at the center and low at the ends, i.e., in the width direction of the bead 30.

In one embodiment, as shown in fig. 4-10, the bead 30 is sandwiched between the hoop 20 and the frame 10, and the hoop 20 presses the bead 30 against the outside of the frame 10. While the arrangement shown in FIG. 4 shows bead 30 at the locking connection of hoop 20, in other embodiments, bead 30 may be located laterally of the locking connection within the loop of hoop 20.

In order to ensure the connection reliability of the bead 30 and the hoop 20 and ensure the filtering quality, in the first embodiment, the pressing parts 30a matched with the hoop 20 are respectively arranged at the two ends of the bead body 30b. Namely, the two ends of the pressing bar 30 are the pressing parts 30a, and the middle part is the pressing bar body 30b. The cross section of the press-connection part 30a is an arc-shaped profile with a thick middle part and thin two sides, so that the pressing strip 30 can be effectively prevented from moving in the circumferential direction of the frame body 10, the pressing strip 30 can be reliably positioned, and the pressing strip 30 can be prevented from moving and even falling out of the hoop 20. Specifically, as shown in fig. 6 and 7, the inner side surface of the pressing bar 30 is an arc surface corresponding to the frame body 10, and the outer side surface of the pressing part 30a is an arc surface whose curvature gradually increases from the middle to both sides.

As shown in fig. 4, 11-13, the end of the hoop 20 is provided with a locking lug 21 for a bolt locking connection. In use, the bolt is turned to adjust the distance between the locking lugs 21, so that the hoop 20 can be opened or tightened to perform the mounting or dismounting operation of the filter screen 40.

Second embodiment as shown in fig. 11, the bead 30 is disposed between the two locking lugs 21 and forms an abutting fit with the locking lugs 21. The pressing strip 30 can be separated from the hoop 20, when in use, the pressing strip 30 is inserted between the two locking lugs 21, the two locking lugs 21 are respectively connected with two sides of the pressing strip 30 in an abutting mode, and therefore the filter screen 40 is installed.

Third embodiment as shown in fig. 12, a reinforcing rib is arranged on the outer side of the pressing bar 30. The pressing strip 30 is welded to the end face of one locking lug 21 of the hoop 20 and is in abutting fit with the end face of the other locking lug 21. Because the batten 30 is fixedly connected with the hoop 20, when the frame is used, the filter screen 40 is wrapped outside the frame body 10, the batten 30 and the hoop 20 are sleeved outside the filter screen 40, the two hoops 20 are locked, the lock lugs 21 are abutted against and matched with the other end of the batten 30, and the filter screen 40 can be reliably installed.

In the fourth embodiment, as shown in fig. 13, the thickness of the pressing strip 30 gradually decreases from one side to the other side, the side with the larger thickness of the pressing strip 30 is welded to the end surface of the locking lug 21, and the side with the smaller thickness is sandwiched between the other locking lug 21 and the frame body 10. In this way, the locking force of the hoop 20 can be adjusted, and the hoop can be applied to different filter screens 40 and frame bodies 10.

In order to reliably support the filter screen 40, maintain the posture of the filter screen 40 and well cooperate with the hoop 20 and the bead 30, the frame body 10 comprises an end plate 11 which is integrally in a circular plate shape, and the end plate 11 is provided with holes for fixing the frame body 10 and discharging filtrate. The enclosing plates 12 are circumferentially arranged between the two end plates 11, and holes are uniformly distributed on the enclosing plates 12 to allow slurry to enter the inner cavity of the frame body 10, so that the enclosing plates 12 can maintain the posture of the filter screen 40, prevent the soft filter screen 40 from swinging into the frame body 10 to block the siphon, and enable the filtered liquid to smoothly enter the inner cavity of the frame body 10 and be timely discharged from the siphon.

In order to further ensure the filtering quality, the preferred scheme is that the support frame 10 is provided with support bars arranged along the bus direction of the frame body corresponding to the pressing bars 30, the support bars are positioned on the inner side of the enclosing plate 12, or the enclosing plate 12 is provided with support ribs arranged along the bus direction of the frame body corresponding to the pressing bars 30, the support bars or the support ribs provide radial acting force for the frame body 10 to be matched with the pressing bars 30, and gaps are prevented from being formed at the joints of the filter screens 40.

Claims

1. The utility model provides a filter screen fixed knot constructs which characterized in that: the frame comprises a frame body (10) which is integrally of a columnar frame structure, wherein two ends of the frame body (10) are provided with hoops (20), a filter screen (40) is attached to the periphery of the frame body (10), and the hoops (20) tightly hoop and fix the edge of the filter screen (40) at the position of a ring.

2. The screen fixing structure according to claim 1, wherein: a pressing strip (30) extending along the bus direction of the frame body (10) is arranged between the two hoops (20), the filter screen (40) is arranged around the circumference of the frame body (10) and covers the circumference of the frame body, and a joint or a superposition section of the filter screen (40) is clamped between the pressing strip (30) and the frame body (10).

3. The screen fixing structure according to claim 2, wherein: the pressing strip (30) comprises a pressing strip body (30b), reinforcing ribs (31) are arranged on the pressing strip body (30b), and rib bodies of the reinforcing ribs (31) are arranged in the radial direction of the frame body (10) in a high-low mode and are bulges with high middle parts and low two ends.

4. The screen fixing structure according to claim 2, wherein: the pressing strip (30) is clamped between the hoop (20) and the frame body (10), and the hoop (20) tightly presses the pressing strip (30) on the outer side of the frame body (10).

5. The screen fixing structure according to claim 4, wherein: the two ends of the pressing strip (30) are provided with pressing parts (30a), the middle part is provided with a pressing strip body (30b), and the section of each pressing part (30a) is an arched profile with a thick middle part and thin two sides.

6. The screen fixing structure according to claim 5, wherein: the pressing strip (30) is positioned at the locking connection part of the hoop (20); the inner side surface of the pressing strip (30) is an arc surface which is consistent with the frame body (10), and the outer side surface of the pressing part (30a) is an arc surface of which the curvature is gradually increased from the middle to two sides.

7. The screen fixing structure according to claim 2, wherein: the end part of the hoop (20) is provided with a locking lug (21) for locking and connecting a bolt, and the pressing strip (30) is arranged between the two locking lugs (21) and forms abutting fit with the locking lugs (21).

8. The screen fixing structure according to claim 2, wherein: the end part of the hoop (20) is provided with a locking lug (21) for locking and connecting a bolt, and the pressing strip (30) is connected with the end surface of one locking lug (21) of the hoop (20) in a welding way and is abutted and matched with the end surface of the other locking lug (21).

9. The screen fixing structure according to claim 2, wherein: the end part of the hoop (20) is provided with a locking lug (21) for locking and connecting a bolt; the thickness of the pressing strip (30) becomes thinner gradually from one side to the other side, the side with the larger thickness of the pressing strip (30) is welded with the end face of the lock lug (21), and the side with the smaller thickness is clamped between the other lock lug (21) and the frame body (10).

10. The screen fixing structure according to any one of claims 1 to 9, wherein: the frame body (10) comprises an end plate (11) which is integrally in a circular plate shape, and holes for fixing the frame body (10) and discharging filtrate are formed in the end plate (11); a coaming (12) is arranged between the two end plates (11) and circumferentially surrounded, and holes are uniformly distributed on the coaming (12) for the slurry to enter the inner cavity of the frame body (10).