CN112023493A - Polyurethane arc screen cloth - Google Patents
Polyurethane arc screen cloth Download PDFInfo
- Publication number
- CN112023493A CN112023493A CN202010841040.4A CN202010841040A CN112023493A CN 112023493 A CN112023493 A CN 112023493A CN 202010841040 A CN202010841040 A CN 202010841040A CN 112023493 A CN112023493 A CN 112023493A
- Authority
- CN
- China
- Prior art keywords
- screen
- transverse
- polyurethane
- longitudinal
- bars
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/737—Articles provided with holes, e.g. grids, sieves
Abstract
The invention relates to the technical field of mineral separation devices, and particularly discloses a polyurethane arc screen, wherein a supporting frame body is of a grid structure consisting of transverse supporting bars and longitudinal supporting bars, the transverse supporting bars and the longitudinal supporting bars are internally embedded with a transverse framework and a longitudinal framework respectively, a screen sheet comprises a frame, and a plurality of transverse screen bars and a plurality of longitudinal screen bars which are connected to the inner edge of the frame, the bottom ends of the transverse screen bars are fixedly clamped in connecting grooves, the two ends of the transverse screen bars are respectively and vertically and fixedly connected to two side walls of an inner cavity of the frame, the transverse screen bars are formed by butt joint of the lower parts of the screen bars and the top and bottom of the upper parts of the screen bars, the cross sections of the upper parts of the screen bars are obtuse triangles, the lower surfaces of the upper parts of the screen bars are flush with the upper surface of the frame, the screen sheet is integrally; the problems that the service life of the sieve mesh for the arc sieve is short and the sieving efficiency is low are solved.
Description
Technical Field
The invention relates to the technical field of ore dressing devices, in particular to a polyurethane arc-shaped screen.
Background
The sieve bend is an economical and practical solid-liquid separation equipment, is mainly used for pre-dewatering, desliming, medium removing operation and graded coal slime recovery of materials in coal preparation plants and ore dressing plants, and can also be matched with a hydrocyclone for use to effectively grade, dewater, desliming and medium removing fine materials. At present, most of the arc-shaped screens are formed by assembling and welding stainless steel screen bars, and the coal slime is cut by cutting edges of the stainless steel screen bars, so that the aim of improving the dewatering and medium removing effects is fulfilled. In the practical application process, in order to solve the problem that the stainless steel screen is not wear-resistant, wear-resistant steel screen bar materials are gradually adopted, and some beneficial attempts are also made on non-metal materials, but the progress is not great, the current arc screen still mainly uses the stainless steel screen, the arc screen surface and the screen frame adopt a pivot steering structure, the rotation is 180 degrees, the direction exchange of the feeding end and the discharging end is completed, the purposes of uniform wear and service life prolonging are achieved, but the phenomena of hair scraping and hole blocking are serious due to the inherent non-wear-resistant characteristic of the metal materials, the replacement is often required in a dressing plant for ten days, a large amount of maintenance cost is wasted, and meanwhile, the waste of human resources and material resources is caused.
The invention discloses (announced) CN107511336A and provides a high-efficiency sieve bend structure, which comprises a sieve bend plate and a sieve frame, wherein the sieve bend plate is arranged at the lower part of the sieve frame, the upper part of the sieve frame is provided with a vibrating motor, two sides of the sieve frame are provided with damping rubber, the sieve bend plate is composed of a plurality of sieve plate frameworks and sieve wires, the sieve plate frameworks are provided with the sieve wires, the sieve plate frameworks and the sieve wires are distributed in a longitude and latitude mode, the cross sections of the sieve wires are parabolic, the back width of the sieve wires is at least 0.75mm, and the back width of the sieve wires is more than or equal to 0.75mm and less than 1.6 mm. The arc-shaped sieve plate is a full polyurethane sieve plate or a polyurethane edge-covered stainless steel sieve plate. The invention increases the aperture ratio of the sieve bend and enhances the effects of medium removal, dehydration and desliming by reducing the back width of the screen wire. However, polyurethane covered edge trommel has little effect on improving the service life of the trommel; and the effects of medium removal, dehydration and desliming are not significantly improved.
Disclosure of Invention
The invention aims to solve the problems of short service life and low screening efficiency of the conventional sieve screen for the sieve bend.
In order to achieve the purpose, the invention provides the following technical scheme: a polyurethane arc screen comprises a supporting frame body and screen pieces, wherein the supporting frame body comprises transverse supporting strips and longitudinal supporting strips, the transverse supporting strips and the longitudinal supporting strips form a grid structure, transverse frameworks are inlaid in the transverse supporting strips along the axial direction, and longitudinal frameworks are inlaid in the longitudinal supporting strips along the axial direction;
the screen sheet comprises a frame, and a plurality of transverse screen bars and a plurality of longitudinal screen bars which are connected to the inner edge of the frame;
the cross section of the top end of the transverse screen bar is an obtuse triangle, and the long side corresponding to the obtuse angle of the obtuse triangle is a bottom side;
the sieve piece uses thermoplastic polyurethane elastic material integrated into one piece, and the hardness that uses the polyurethane material is 82 ~ 92 shao A, braced frame body with the sieve piece adopts the secondary pouring to form overall structure, just braced frame body is the polyurethane material.
Preferably, the both ends of vertical grating perpendicular fixed connection respectively in the antetheca and the back wall of frame inner chamber, a plurality of spread groove has evenly been seted up to the upper surface of vertical grating, the bottom fixed joint of horizontal grating in the spread groove, and the both ends of horizontal grating perpendicular fixed connection respectively in the both sides wall of frame inner chamber, the top of vertical grating is arc convex surface structure, the height of spread groove does 2/5 ~ 1/2 of grating lower part height, the lower surface of vertical grating with the lower surface of frame flushes.
Preferably, the horizontal grating includes grating lower part and grating upper portion, the top of grating lower part with the bottom butt joint on grating upper portion, the cross-section on grating upper portion is obtuse triangle-shaped, and the long limit that obtuse triangle's obtuse angle corresponds is the base, the lower surface on grating upper portion with the upper surface of frame flushes, the upper surface of frame with braced frame's upper surface flushes.
Preferably, the polyurethane used for the supporting frame body is TDI system two-component polyurethane.
Preferably, the transverse framework is a vertically-arranged flat steel, and the longitudinal framework is a horizontally-arranged flat steel.
Preferably, the longitudinal skeleton is a flexible glass fiber strip.
Preferably, the distance between the longitudinal screen bars is 10-12.5 mm.
Preferably, the width of the top surface of each transverse screen bar is 0.8-1.6 mm, and the minimum clear distance between every two adjacent transverse screen bars is 0.35-2.0 mm.
Preferably, the hardness of the polyurethane material used for the support frame body and the sieve sheet is 85-90 shore A.
Preferably, the height of the connecting groove is 3/7 times the height of the lower part of the screen bar.
Compared with the prior art, the invention has the beneficial effects that:
1. the screen is made of polyurethane, flat steel or flexible glass fiber materials, has the advantages of high wear resistance, good elasticity, light weight, high strength and the like, greatly prolongs the service life of products, reduces the production stop loss, is convenient to replace and reduces the maintenance cost.
2. According to the invention, multiple groups of screen pieces are connected in rows and connected into a surface, and one screen forms the whole screen surface, so that the defect that the frame parts of multiple screen meshes have more blind areas is overcome, the blind areas on the screen meshes are reduced to the maximum extent, the aperture ratio is increased, and the screening efficiency is improved.
3. The integral screen surface of the screen mesh forms a unique shutter type cutting edge structure, so that a water film can be effectively cut to force out slime water, and the screen mesh is favorable for screening fine particle ash and moisture; the shutter type structure can also enable short fiber components in the coal slime water to continuously swing on the screen surface, and reduce the probability of the phenomenon of screen surface fluff plugging.
4. The screen provided by the invention has small difficulty in the whole manufacturing process, is easy to process into different sizes, and meets the installation requirements of different devices.
5. The longitudinal screen bars have good reinforcing effect, not only ensure the action of splitting water films of the long cutting seams, but also avoid the phenomenon of coarse movement caused by the deformation of the transverse ribs; the transverse framework is used for ensuring the overall strength of the arc-shaped screen, and screen failure caused by arc loss is avoided.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic overall front view of the present invention;
FIG. 3 is a schematic side view of the present invention in its entirety;
FIG. 4 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 3 at B according to the present invention;
FIG. 6 is a schematic perspective view of a screen sheet according to the present invention;
FIG. 7 is a schematic perspective view of a transverse screen bar according to the present invention;
fig. 8 is a schematic perspective view of a longitudinal screen bar according to the present invention.
In the figure: 1-a support frame body; 11-transverse support bars; 111-a transverse skeleton; 12-longitudinal support bars; 121-longitudinal skeleton; 2-sieving tablets; 21-transverse screen bars; 211-lower part of screen bar; 212-upper screen band; 22-longitudinal screen bars; 221-connecting groove; 23-a frame;
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.
Embodiment 3, please refer to fig. 1 to 8, the present invention provides a technical solution, in which a polyurethane arc screen includes a support frame 1 and a screen sheet 2, the support frame 1 includes a transverse support bar 11 and a longitudinal support bar 12, the transverse support bar 11 and the longitudinal support bar 12 form a grid structure, a transverse framework 111 is embedded in the transverse support bar 11 along an axial direction, and the transverse framework 111 is a vertical flat steel; a longitudinal framework 121 is embedded in the longitudinal support bar 12 along the axial direction, and the longitudinal framework 121 is a flat steel; the sieve sheet 2 comprises a frame 23, and a plurality of transverse sieve bars 21 and a plurality of longitudinal sieve bars 22 which are connected to the inner edge of the frame 23, two ends of each longitudinal sieve bar 22 are respectively and vertically and fixedly connected to the front wall and the rear wall of the inner cavity of the frame 23, a plurality of connecting grooves 221 are uniformly formed in the upper surface of each longitudinal sieve bar 22, the bottom ends of the transverse sieve bars 21 are fixedly clamped in the connecting grooves 221, two ends of each transverse sieve bar 21 are respectively and vertically and fixedly connected to two side walls of the inner cavity of the frame 23, the lower surfaces of the longitudinal sieve bars 22 are flush with the lower surfaces of the frame 23, the space between the longitudinal sieve bars 22 is 11mm, the width of the top surface of each transverse sieve bar 21 is 1.0mm, and the minimum clear distance between the adjacent transverse sieve; the top end of the longitudinal screen bar 22 is of an arc convex surface structure, and the height of the connecting groove 221 is 3/7 times of the height of the lower part 211 of the screen bar; the transverse screen bars 21 comprise screen bar lower parts 211 and screen bar upper parts 212, the top ends of the screen bar lower parts 211 are butted with the bottom ends of the screen bar upper parts 212, the sections of the screen bar upper parts 212 are obtuse triangles, the long sides corresponding to the obtuse angles are bottom sides, the sections of the screen bar lower parts 211 are inverted isosceles trapezoids, the back surfaces of the screen bar upper parts 212 and the back surfaces of the screen bar lower parts 211 are positioned in the same inclined plane, the length and width of the top surfaces of the screen bar lower parts 211 are respectively and correspondingly equal to the length and width of the bottom surfaces of the screen bar upper parts 212, and the lower surfaces of the screen bar upper parts 212 are flush with the upper surfaces of the; the upper surface of the frame 23 is flush with the upper surface of the support frame 1; the screen sheet 2 is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the polyurethane materials is 82-92 Shore A, the supporting frame body 1 and the screen sheet 2 are formed into an integral structure by secondary pouring, and the supporting frame body 1 is made of TDI system two-component polyurethane materials.
Embodiment 4, please refer to fig. 1 to 8, the present invention provides a technical solution, in which a polyurethane arc screen includes a support frame 1 and a screen sheet 2, the support frame 1 includes a transverse support bar 11 and a longitudinal support bar 12, the transverse support bar 11 and the longitudinal support bar 12 form a grid structure, a transverse framework 111 is embedded in the transverse support bar 11 along an axial direction, and the transverse framework 111 is a vertical flat steel; a longitudinal framework 121 is embedded in the longitudinal support bar 12 along the axial direction, and the longitudinal framework 121 is a flat steel; the sieve sheet 2 comprises a frame 23, and a plurality of transverse sieve bars 21 and a plurality of longitudinal sieve bars 22 which are connected to the inner edge of the frame 23, two ends of each longitudinal sieve bar 22 are respectively and vertically and fixedly connected to the front wall and the rear wall of the inner cavity of the frame 23, a plurality of connecting grooves 221 are uniformly formed in the upper surface of each longitudinal sieve bar 22, the bottom ends of the transverse sieve bars 21 are fixedly clamped in the connecting grooves 221, two ends of each transverse sieve bar 21 are respectively and vertically and fixedly connected to two side walls of the inner cavity of the frame 23, the lower surfaces of the longitudinal sieve bars 22 are flush with the lower surfaces of the frame 23, the space between the longitudinal sieve bars 22 is 11.5mm, the width of the top surface of each transverse sieve bar 21 is 1.25mm, and the minimum clear distance between the adjacent transverse sieve; the top end of the longitudinal screen bar 22 is of an arc convex surface structure, and the height of the connecting groove 221 is 3/7 times of the height of the lower part 211 of the screen bar; the transverse screen bars 21 comprise screen bar lower parts 211 and screen bar upper parts 212, the top ends of the screen bar lower parts 211 are butted with the bottom ends of the screen bar upper parts 212, the sections of the screen bar upper parts 212 are obtuse triangles, the long sides corresponding to the obtuse angles are bottom sides, the sections of the screen bar lower parts 211 are inverted isosceles trapezoids, the back surfaces of the screen bar upper parts 212 and the back surfaces of the screen bar lower parts 211 are positioned in the same inclined plane, the length and width of the top surfaces of the screen bar lower parts 211 are respectively and correspondingly equal to the length and width of the bottom surfaces of the screen bar upper parts 212, and the lower surfaces of the screen bar upper parts 212 are flush with the upper surfaces of the; the upper surface of the frame 23 is flush with the upper surface of the support frame 1; the screen sheet 2 is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the polyurethane materials is 82-92 Shore A, the supporting frame body 1 and the screen sheet 2 are formed into an integral structure by secondary pouring, and the supporting frame body 1 is made of TDI system two-component polyurethane materials.
Embodiment 5, please refer to fig. 1 to 8, where the present invention provides a technical solution, in which the polyurethane arc screen includes a support frame 1 and screen pieces 2, the support frame 1 includes transverse support bars 11 and longitudinal support bars 12, the transverse support bars 11 and the longitudinal support bars 12 form a grid structure, a transverse framework 111 is embedded in the transverse support bars 11 along an axial direction, and the transverse framework 111 is a vertical flat steel; a longitudinal framework 121 is embedded in the longitudinal support bar 12 along the axial direction, and the longitudinal framework 121 is a flexible glass fiber strip; the sieve sheet 2 comprises a frame 23, and a plurality of transverse sieve bars 21 and a plurality of longitudinal sieve bars 22 which are connected to the inner edge of the frame 23, two ends of each longitudinal sieve bar 22 are respectively and vertically and fixedly connected to the front wall and the rear wall of the inner cavity of the frame 23, a plurality of connecting grooves 221 are uniformly formed in the upper surface of each longitudinal sieve bar 22, the bottom ends of the transverse sieve bars 21 are fixedly clamped in the connecting grooves 221, two ends of each transverse sieve bar 21 are respectively and vertically and fixedly connected to two side walls of the inner cavity of the frame 23, the lower surfaces of the longitudinal sieve bars 22 are flush with the lower surfaces of the frame 23, the space between the longitudinal sieve bars 22 is 12mm, the width of the top surface of each transverse sieve bar 21 is 1.25mm, and the minimum clear distance between the adjacent transverse sieve; the top end of the longitudinal screen bar 22 is of an arc convex surface structure, and the height of the connecting groove 221 is 3/7 times of the height of the lower part 211 of the screen bar; the transverse screen bars 21 comprise screen bar lower parts 211 and screen bar upper parts 212, the top ends of the screen bar lower parts 211 are butted with the bottom ends of the screen bar upper parts 212, the sections of the screen bar upper parts 212 are obtuse triangles, the long sides corresponding to the obtuse angles are bottom sides, the sections of the screen bar lower parts 211 are inverted isosceles trapezoids, the back surfaces of the screen bar upper parts 212 and the back surfaces of the screen bar lower parts 211 are positioned in the same inclined plane, the length and width of the top surfaces of the screen bar lower parts 211 are respectively and correspondingly equal to the length and width of the bottom surfaces of the screen bar upper parts 212, and the lower surfaces of the screen bar upper parts 212 are flush with the upper surfaces of the; the upper surface of the frame 23 is flush with the upper surface of the support frame 1; the screen sheet 2 is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the polyurethane materials is 82-92 Shore A, the supporting frame body 1 and the screen sheet 2 are formed into an integral structure by secondary pouring, and the supporting frame body 1 is made of TDI system two-component polyurethane materials.
Embodiment 6, please refer to fig. 1 to 8, where the present invention provides a technical solution, in which the polyurethane arc screen includes a support frame 1 and screen pieces 2, the support frame 1 includes transverse support bars 11 and longitudinal support bars 12, the transverse support bars 11 and the longitudinal support bars 12 form a grid structure, a transverse framework 111 is embedded in the transverse support bars 11 along an axial direction, and the transverse framework 111 is a vertical flat steel; a longitudinal framework 121 is embedded in the longitudinal support bar 12 along the axial direction, and the longitudinal framework 121 is a flexible glass fiber strip; the sieve sheet 2 comprises a frame 23, and a plurality of transverse sieve bars 21 and a plurality of longitudinal sieve bars 22 which are connected to the inner edge of the frame 23, two ends of each longitudinal sieve bar 22 are respectively and vertically and fixedly connected to the front wall and the rear wall of the inner cavity of the frame 23, a plurality of connecting grooves 221 are uniformly formed in the upper surface of each longitudinal sieve bar 22, the bottom ends of the transverse sieve bars 21 are fixedly clamped in the connecting grooves 221, two ends of each transverse sieve bar 21 are respectively and vertically and fixedly connected to two side walls of the inner cavity of the frame 23, the lower surfaces of the longitudinal sieve bars 22 are flush with the lower surfaces of the frame 23, the space between the longitudinal sieve bars 22 is 12.5mm, the width of the top surface of each transverse sieve bar 21 is 1.6mm, and the minimum clear distance between the adjacent transverse sieve; the top end of the longitudinal screen bar 22 is of an arc convex surface structure, and the height of the connecting groove 221 is 3/7 times of the height of the lower part 211 of the screen bar; the transverse grate bars 21 comprise grate bar lower parts 211 and grate bar upper parts 212, the top ends of the grate bar lower parts 211 are in butt joint with the bottom ends of the grate bar upper parts 212, the sections of the grate bar upper parts 212 are obtuse triangles, long edges corresponding to the obtuse angles are bottom edges, the sections of the grate bar lower parts 211 are circular arc-shaped, the bottom ends of the grate bar upper parts 212 are embedded into the tops of the grate bar lower parts 211, and the lower surfaces of the grate bar upper parts 212 are flush with the upper surfaces of the frames 23; the upper surface of the frame 23 is flush with the upper surface of the support frame 1; the screen sheet 2 is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the polyurethane materials is 82-92 Shore A, the supporting frame body 1 and the screen sheet 2 are formed into an integral structure by secondary pouring, and the supporting frame body 1 is made of TDI system two-component polyurethane materials.
The working principle is as follows: the sieve sheet 2 is made of thermoplastic polyurethane elastic materials and is formed through one-time injection molding through an injection molding machine, then a plurality of polyurethane sieve sheets 2 are selected, and the sieve sheet 2, the transverse framework 111 and the longitudinal framework 121 are cast into a whole through secondary casting to form an arc-shaped sieve screen with a certain size; wherein, the sieve sheets 2 between the adjacent rows are arranged in a staggered way; when the screen is integrally arranged on the arc screen machine, the high edge part of the transverse screen bar 21 is upward, so that the cutting effect on the slurry flowing downwards is facilitated; the solid-liquid mixture containing certain moisture flows down uniformly from the overflow plate of the material separating box at the top of the sieve bend, and can effectively split a water film due to the action of cutting edges on the transverse screen bars 21, coal slime water and the like are forced to be separated, solid particles larger than screen gaps are skipped on the transverse screen bars 21, moisture and small particle ash content can pass through the screen gaps, the capability of the ribs for intercepting the moisture and the ash content is greatly improved, and the dewatering and desliming efficiency of the sieve bend is remarkably improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a polyurethane arc screen cloth, includes braced frame body (1) and sieve piece (2), its characterized in that:
the supporting frame body (1) comprises transverse supporting strips (11) and longitudinal supporting strips (12), the transverse supporting strips (11) and the longitudinal supporting strips (12) form a grid-shaped structure, transverse frameworks (111) are inlaid in the transverse supporting strips (11) along the axial direction, and longitudinal frameworks (121) are inlaid in the longitudinal supporting strips (12) along the axial direction;
the sieve sheet (2) comprises a frame (23) and a plurality of transverse sieve bars (21) and a plurality of longitudinal sieve bars (22) which are connected to the inner edge of the frame (23);
the cross section of the top end of the transverse screen bar (21) is an obtuse triangle, and the long side corresponding to the obtuse angle of the obtuse triangle is the bottom side;
the sieve sheet (2) is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the polyurethane materials is 82-92 Shore A, the supporting frame body (1) and the sieve sheet (2) are formed into an integral structure by secondary pouring, and the supporting frame body (1) is made of polyurethane materials.
2. The polyurethane arcuate screen as defined in claim 1, wherein: the both ends of vertical grating (22) perpendicular fixed connection respectively in the antetheca and the back wall of frame (23) inner chamber, a plurality of spread groove (221) have evenly been seted up to the upper surface of vertical grating (22), the bottom fixed clamping of horizontal grating (21) connect in spread groove (221), and the both ends of horizontal grating (21) perpendicular fixed connection respectively in the both sides wall of frame (23) inner chamber, the top of vertical grating (22) is arc convex surface structure, the height of spread groove (221) does 2/5 ~ 1/2 of grating lower part (211) height are doubly, the lower surface of vertical grating (22) with the lower surface of frame (23) flushes.
3. A polyurethane curved screen as claimed in claim 2, characterised in that said transverse screen bars (21) comprise:
a lower part (211) of the screen bar and
the top of grating upper portion (212), the top of grating lower part (211) with the bottom butt joint of grating upper portion (212), the cross-section of grating upper portion (212) is obtuse triangle-shaped, and the long limit that obtuse triangle's obtuse angle corresponds is the base, the lower surface of grating upper portion (212) with the upper surface of frame (23) flushes, the upper surface of frame (23) with the upper surface of braced frame body (1) flushes.
4. The polyurethane arcuate screen as defined in claim 1, wherein: the polyurethane used for the supporting frame body (1) is TDI system two-component polyurethane.
5. The polyurethane arcuate screen as defined in claim 3, wherein: the transverse framework (111) is vertically arranged flat steel, and the longitudinal framework (121) is horizontally arranged flat steel.
6. The polyurethane arcuate screen as defined in claim 4, wherein: the longitudinal skeleton (121) is a flexible glass fiber strip.
7. The polyurethane arcuate screen as defined in claim 1, wherein: the distance between the longitudinal screen bars (22) is 10-12.5 mm.
8. The polyurethane arcuate screen as defined in claim 7, wherein: the width of horizontal screen band (21) top surface is 0.8 ~ 1.6mm, and adjacent the minimum clear distance between horizontal screen band (21) is 0.35 ~ 2.0 mm.
9. The polyurethane arcuate screen as defined in claim 1, wherein: the hardness of the polyurethane material used for the supporting frame body (1) and the sieve sheet (2) is 85-90 Shore A.
10. The polyurethane arcuate screen as defined in claim 1, wherein: the height of the connecting groove (221) is 3/7 times the height of the lower part (211) of the screen bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841040.4A CN112023493A (en) | 2020-08-20 | 2020-08-20 | Polyurethane arc screen cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841040.4A CN112023493A (en) | 2020-08-20 | 2020-08-20 | Polyurethane arc screen cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112023493A true CN112023493A (en) | 2020-12-04 |
Family
ID=73577708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010841040.4A Withdrawn CN112023493A (en) | 2020-08-20 | 2020-08-20 | Polyurethane arc screen cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112023493A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113547679A (en) * | 2021-07-23 | 2021-10-26 | 成都智诚筛网有限公司 | Screen mesh and manufacturing process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100248A (en) * | 1975-11-04 | 1978-07-11 | Birtley Engineering Limited | Manufacture of grading and dewatering screens |
| US4819809A (en) * | 1985-09-09 | 1989-04-11 | Derrick Manufacturing Corporation | Reinforced polyurethane vibratory screen |
| US20090301945A1 (en) * | 2006-08-01 | 2009-12-10 | Michael Trench | Screen module for vibratory screening apparatus |
| CN201441977U (en) * | 2009-06-05 | 2010-04-28 | 李其梅 | Novel polyurethane screen |
| CN106216239A (en) * | 2016-08-12 | 2016-12-14 | 北京斯克瑞科技有限公司 | A kind of thermoplastic polyurethane fine wedge wire screen net and forming method thereof |
| CN206621861U (en) * | 2017-03-08 | 2017-11-10 | 广东益康生环保设备有限公司 | The screen cloth and solid-liquid separating machine of a kind of solid-liquid separating machine |
| CN210304542U (en) * | 2019-07-02 | 2020-04-14 | 唐山森普矿山装备有限公司 | Novel arc screen |
-
2020
- 2020-08-20 CN CN202010841040.4A patent/CN112023493A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100248A (en) * | 1975-11-04 | 1978-07-11 | Birtley Engineering Limited | Manufacture of grading and dewatering screens |
| US4819809A (en) * | 1985-09-09 | 1989-04-11 | Derrick Manufacturing Corporation | Reinforced polyurethane vibratory screen |
| US20090301945A1 (en) * | 2006-08-01 | 2009-12-10 | Michael Trench | Screen module for vibratory screening apparatus |
| CN201441977U (en) * | 2009-06-05 | 2010-04-28 | 李其梅 | Novel polyurethane screen |
| CN106216239A (en) * | 2016-08-12 | 2016-12-14 | 北京斯克瑞科技有限公司 | A kind of thermoplastic polyurethane fine wedge wire screen net and forming method thereof |
| CN206621861U (en) * | 2017-03-08 | 2017-11-10 | 广东益康生环保设备有限公司 | The screen cloth and solid-liquid separating machine of a kind of solid-liquid separating machine |
| CN210304542U (en) * | 2019-07-02 | 2020-04-14 | 唐山森普矿山装备有限公司 | Novel arc screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113547679A (en) * | 2021-07-23 | 2021-10-26 | 成都智诚筛网有限公司 | Screen mesh and manufacturing process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201337984Y (en) | High frequency vibration undersize sieve | |
| CA1102282A (en) | Snap-fitting screening module for longitudinal supports | |
| CN112023493A (en) | Polyurethane arc screen cloth | |
| CN202238601U (en) | Circulating sieve separation equipment | |
| WO2022105219A1 (en) | Wavy polyurethane high-frequency linear vibrating screen | |
| KR101119517B1 (en) | Rotary type scraper | |
| CN112495575A (en) | Sand separating and washing integrated machine | |
| CN112023494B (en) | Use sieve machine of polyurethane screen cloth | |
| CN207103103U (en) | A kind of bounce screen sieve plate | |
| CN201913070U (en) | Novel combined screen mesh for high-frequency screens | |
| CN211989614U (en) | Novel prevent pressing from both sides material shale shaker sifter utensil | |
| CN112023471A (en) | Polyurethane sieve sheet for arc dewatering screen | |
| CN210207199U (en) | Sand screening and washing integrated machine | |
| CN215313862U (en) | Wave type opening anti-blocking sieve plate | |
| CN210207050U (en) | Screen mesh structure of hammer mill | |
| CN209502230U (en) | Prevent the sieve plate of material sticks and the vibrating screen using the sieve plate | |
| CN215235869U (en) | A fixed sieve that is used for coal preparation factory to take off dehydration in advance that medias | |
| CN109848034A (en) | A kind of industry pellet screening plant | |
| CN209549935U (en) | A kind of novel vibrating screen | |
| CN207170235U (en) | One kind can water conservancy diversion grains separating machine sieving plate | |
| CN202823840U (en) | Fixed strip sieve | |
| CN211190972U (en) | Sieve plate for specific gravity shape separating sieve | |
| CN217491622U (en) | Impurity removal screening equipment for concrete aggregate | |
| CN209156329U (en) | A kind of sieve bend | |
| CN213377822U (en) | Novel screen mesh of vibrating screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201204 |
|
| WW01 | Invention patent application withdrawn after publication |