CN2794651Y

CN2794651Y - Screen plate

Info

Publication number: CN2794651Y
Application number: CN 200520030370
Authority: CN
Inventors: 郭晓兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-05
Filing date: 2005-04-05
Publication date: 2006-07-12
Anticipated expiration: 2015-04-05

Abstract

The utility model relates to a bar screen plate used for screening materials. The existing bar screen plate has the problems of complicated structure, easy looseness and breakage in bar fixing, etc. The developed screen plate is provided with more than one box-shaped transverse beam with a front opening on a screen frame from rear side to front side. The high molecular elastic material is poured in the transverse beams. One end of each bar is fixed into the high molecular elastic material in the transverse beams, and the other end is hung and lapped above the box-shaped transverse beam of the rear bar. The sizes of cross sections of fixing ends of the bars change into small size from large size along the radial direction from rear side to front side. The opening position of each box-shaped transverse beam is provided with a structure preventing the high molecular elastic material leaking out. Wear resistant material is compounded on the surface of the bars. The screen plate can solve the problems existing in the existing bar screen plate. The utility model has the advantages of reliable bar fixing, difficult desquamation and breakage, simple integral structure, long service life, favorable blockage-proof performance, etc.

Description

Sieve plate

Affiliated technical field

The utility model relates to a kind of rod sieve plate of the sieve plate that is used for material screening, particularly high opening rate.

Background technology

In the vibrosieve field, the rod sieve plate has the percent opening height, sieve aperture is difficult for advantages such as obstruction, but also there is certain problem in this sieve plate, as follows as present bar screen plate structure: as on two side plates on the square beam width, to hole, then rod is penetrated in the hole, below rod, compress again with pressing plate.Although this structure is comparatively simple, boring is time-consuming on the one hand, is difficult for guaranteeing dimensional accuracy simultaneously, owing to can only bore circular hole, therefore, rod can only be with circular in addition.Circular because wear-resisting area is little, so reduced the service life of sieve plate.Also have, because circular rod generally adopts spring steel, and the wearability of existing spring steel is relatively low under certain conditions.Moreover after rod compressed, for the bigger rod of diameter, the elasticity of rod and tolerant morphotropism were relatively poor, and the anti-blocking permeability of sieve plate can variation.At last, this rod is the line contact substantially at crossbeam locating hole place, and stress suffered in the course of work is very big, easily in this fracture.These have all limited the further popularization of rod sieve plate.

Summary of the invention

The purpose of this utility model is exactly that a kind of novel sieve plate will be provided, and it can address the above problem effectively.

The purpose of this utility model is achieved in that

On the screen frame from the back to before being furnished with box-shaped beam, the crossbeam section is the box-shaped of the hollow of open front, in the box-shaped beam of hollow, be cast with macromolecular material, rod one end is embedded in the macromolecular material, the other end is protruding and extend to last crossbeam top by the crossbeam open front, and certain distance is being arranged on the short transverse and between the last beam surface upper.

Rod be embedded in the macromolecular material an end rod axially be the shape of variable cross-section, and extremely precedingly from the back changes of section that diminishes is greatly arranged in the size of rod radially.

The box-shaped beam opening part has a baffle plate, has the hole on the baffle plate, and rod passes from baffle plate.

Box-shaped beam is turned up certain height at the upper and lower steel plate of opening part on the rod direction.

Be welded with dowel at box-shaped beam near opening part.

The section configuration of rod is up big and down small trapezoidal.

Be compounded with high-abrasive material on the rod in addition, the section configuration of compound back rod is trapezoidal.

Rod is divided into two-layer up and down, and the cross section diameter of upper strata rod and the distance between the rod are greater than lower floor's rod.

At box-shaped beam upper surface and trailing flank sulfuration one deck high molecular abrasion-proof material is arranged.

The macromolecular material of box-shaped beam upper surface and trailing flank sulfuration and the macromolecular material in the box-shaped beam are commaterial, and both link together by the hole on the box-shaped beam wall.

Owing to be cast with macromolecular material in box-shaped beam inside, sulfide in macromolecular material and and wear-resisting rod is prepositioned with it, rod can accurately be located after sulfuration finished.Since the radially section of sulfide site rod axially from after to before having greatly to little variation, therefore except vulcanizing this connection, increased mechanical connection again, can prevent that rod from deviating from from macromolecular material, guarantee rod, prevent that simultaneously rod is in radially rotation in axial location.This in addition structure can be avoided the operation of holing on crossbeam, technology is simple, and the section of rod can be Any shape simultaneously.For the material that wearability is had relatively high expectations, rod can be made up big and down small trapezoidal, and this has increased the wear-resisting area of rod, thereby improves the service life of sieve plate.Also have, because the inner cast of box-shaped beam is the elasticity macromolecular material, the position of rod can produce variation by a small margin in the vibration processes, this stress that helps avoiding being produced on the rod of installation position is concentrated, prevent the fracture of rod, can further improve simultaneously the elasticity in the rod course of work, help further eliminating the obstruction of material sieve aperture.

At the box-shaped beam opening part one baffle plate is arranged, have the hole on the baffle plate, rod passes from baffle plate, or box-shaped beam bends up certain height at the upper and lower steel plate of opening part on the rod direction, or near the close opening of box-shaped beam, be welded with dowel, it is not firm that these structures mainly are that the macromolecular material that prevents box-shaped beam inside combines with the crossbeam inwall, and macromolecular material integral body is deviate from box-shaped beam, causes sieve plate to damage.

Compound one deck high-wearing feature material around the rod of the wear-resisting position of rod, for example carbide alloy, ceramic wear-resisting material, polyurethane etc. can further improve the anti-wear performance of rod, prolong the service life of sieve plate.The section configuration of compound back rod is up big and down small trapezoidal, both can improve anti-wear performance, can improve the anti-blocking performance of sieve plate again.

On same crossbeam fixedly the basal area of two rows rod and top rod and the spacing between the rod all greater than lower floor's rod; the granularity of the saturating sieve of the spacing principal security between lower floor's rod; can guarantee like this under the bigger situation of impulsive force; the upper strata rod power that withstands shocks; and material carried out preliminary layering; effectively lower floor's sieve plate is protected and improved the screening percentage of lower floor's sieve plate, improve the whole service life of sieve plate.

At box-shaped beam upper surface and the compound one deck high-abrasive material of trailing flank, can protect crossbeam not frayed in the course of the work effectively, improve the whole serviceability of sieve plate.This layer high-abrasive material adopts with the interior macromolecular material of the same race of crossbeam and by hole on the header board and the macromolecular material in the crossbeam and links together, and can increase the reliability of the connection of this layer high-abrasive material.

Description of drawings

Figure 1 shows that plane structure chart of the present utility model.

Fig. 2 is the section of A-A position among Fig. 1;

Fig. 3 is the local amplification assumption diagram of D position among Fig. 2;

Fig. 4 is the profile of B-B position among Fig. 3;

Fig. 5 is the profile of C-C position among Fig. 4;

Fig. 6 is second kind of local amplification assumption diagram of D position among Fig. 2;

Fig. 7 is the profile of G-G position among Fig. 6;

Fig. 8 is the third local amplification assumption diagram of D position among Fig. 2;

Fig. 9 is the 4th a kind of local amplification assumption diagram of D position among Fig. 2;

The profile of F-F position in Figure 10 bitmap 9;

Specific embodiment

At Fig. 1, Fig. 2, among Fig. 3, Fig. 4, Fig. 5, on screen frame 1, evenly be furnished with three box-shaped beams 3 from back (feed end) to preceding (discharge end), box-shaped beam is opening on the right, be cast with polyurethane elastomeric materials 4 in the box-shaped beam, wear-resisting rod 2 one ends cure in polyurethane elastomeric materials, unsettled next the box-shaped beam top that is overlapped on of the other end, and the slit 8 between the rod is a sieve aperture.Be processed to flat pattern in advance before the end sulfuration of the end of rod in polyurethane, guarantee that the rod radial dimension that is coated by polyurethane in the horizontal direction is big to little variation to before having from the back, produce preferably with polyurethane through the processing assurance at the sulfuration front surface and combine.Be welded with reinforcing bar 9 at box-shaped beam in advance near between the rod of opening part.Box-shaped beam is welded on the screen frame 1 at two ends (according to structural requirement, box-shaped beam also can adopt bolt fastening structure to be connected on the screen frame).Screen frame 1 is the angle steel shape, is furnished with sieve plate installing hole 5 on it, in order to whole sieve plate is installed on the vibratory sieve.At the top crossbeam 15 of sieve plate, as requested rod can be installed, can there be rod yet, in the present embodiment, rod is not installed.

In Fig. 6, structure shown in Figure 7, be compounded with one deck high-abrasive material 11 around the rod 2 in addition again, the section of compound back rod is trapezoidal.Simultaneously, box-shaped beam top steel plate has a downward bending 6 at the front opening part.

In structure shown in Figure 8, box-shaped beam has a plate washer 14 except opening on the right, is provided with opening with outside guaranteeing that rod can pass on baffle plate, also leaves opening 12 on box-shaped beam top, to make things convenient for the cast of polyurethane.

In Fig. 9, structure shown in Figure 10, rod is divided into two-layer up and down, and section configuration is up big and down small trapezoidal.The cross dimensions of upper strata grating and the spacing between the rod are all greater than lower floor's rod.With top, side, sulfuration has the wear-resisting layer 17 of polyurethane, and this layer polyurethane links together by the polyurethane in connecting hole 13 and the crossbeam on crossbeam.On the box-shaped beam lower steel plate on the right all oriented rod direction of opening part turn up 6, between rod up and down, dowel 9 is arranged, these structures can prevent deviating from of polyurethane material.

Claims

1. sieve plate that is used for material screening, go up from the back to before being furnished with box-shaped beam (3) at screen frame (1), it is characterized in that: the crossbeam section is the anterior box-shaped that the hollow of opening is arranged, in the box-shaped beam of hollow, be cast with macromolecular material (4), one end of rod (2) is embedded in the macromolecular material, the other end is protruding and extend to last crossbeam top by the crossbeam open front, and certain distance is being arranged on the short transverse and between the last beam surface upper.

2. sieve plate according to claim 1 is characterized in that: rod be embedded in the macromolecular material an end rod axially be the shape of variable cross-section, and extremely precedingly from the back variation that diminishes is greatly arranged in the size of rod radially.

3. sieve plate according to claim 2 is characterized in that: there is a baffle plate (14) at box-shaped beam open front place, has the hole on the baffle plate, and rod passes from baffle plate.

4. sieve plate according to claim 2 is characterized in that: box-shaped beam at the upper and lower steel plate of opening part to rod direction bending (6).

5. sieve plate according to claim 2 is characterized in that: be welded with dowel (9) at box-shaped beam near opening part.

6. according to claim 3,4,5 arbitrary described sieve plates, it is characterized in that: the section configuration of rod is up big and down small trapezoidal.

7. according to claim 3,4,5 arbitrary described sieve plates, it is characterized in that: be compounded with high-abrasive material (11) on the rod in addition, the section of compound back rod is up big and down small trapezoidal.

8. according to claim 6,7 arbitrary described sieve plates, it is characterized in that: rod is divided into two-layer up and down, and the section of upper strata rod and the distance between the rod are all greater than lower floor's rod.

9. according to claim 6,7,8 arbitrary described sieve plates, it is characterized in that: one deck high-abrasive material (17) is arranged at box-shaped beam upper surface and trailing flank sulfuration.

10. high-abrasive material according to claim 9 is characterized in that: the macromolecular material in this kind material and the box-shaped beam is a commaterial, and both link together by the hole on the box-shaped beam wall (13).