CN112023494A - Use sieve machine of polyurethane screen cloth - Google Patents
Use sieve machine of polyurethane screen cloth Download PDFInfo
- Publication number
- CN112023494A CN112023494A CN202010841186.9A CN202010841186A CN112023494A CN 112023494 A CN112023494 A CN 112023494A CN 202010841186 A CN202010841186 A CN 202010841186A CN 112023494 A CN112023494 A CN 112023494A
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- screen
- sieve
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- bars
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 25
- 239000004814 polyurethane Substances 0.000 title claims abstract description 25
- 239000004744 fabric Substances 0.000 title claims description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 12
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000013013 elastic material Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to the technical field of ore dressing devices, and particularly discloses a screening machine using a polyurethane screen, which comprises a screening machine body, a screen and a fixing part, wherein the screen comprises a supporting frame body and a screen piece, the supporting frame body is in a grid shape formed by transverse supporting bars and longitudinal supporting bars, and the transverse supporting bars and the longitudinal screen bars are internally provided with transverse frameworks and longitudinal frameworks respectively; the screen sheet comprises a frame, a plurality of transverse screen bars and a plurality of longitudinal screen bars, wherein the transverse screen bars and the longitudinal screen bars are connected to the inner edge of the frame, the sections of the upper parts of the screen bars of the transverse screen bars are obtuse triangles, the long sides of the obtuse angles correspond to the front ends of the lower parts of the screen bars, the screen sheet is integrally formed by thermoplastic polyurethane elastic materials, the hardness of the thermoplastic polyurethane materials is 82-92 Shore A, the supporting frame body and the screen sheet are formed into an integral structure by secondary casting, and the supporting frame body is made of TDI system two-component polyurethane; the fixing part is used for flexibly fixing the screen on the screen body; the problems of short service life, high maintenance cost and low screening efficiency of the arc-shaped screening machine are solved.
Description
Technical Field
The invention relates to the technical field of ore dressing devices, in particular to a screening machine using a polyurethane 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 wires are arranged on the sieve plate frameworks, the sieve plate frameworks and the sieve wires are distributed in a warp-weft 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. The arc-shaped sieve plate is an all-polyurethane sieve plate or a polyurethane edge-wrapped 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, high maintenance cost and low screening efficiency of the existing arc-shaped screen machine.
In order to achieve the purpose, the invention provides the following technical scheme: the screen machine using the polyurethane screen comprises a screen machine body, a screen and a fixing part, wherein the screen comprises a supporting frame body and screen pieces, 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, a plurality of transverse screen bars and a plurality of longitudinal screen bars, wherein the transverse screen bars and the longitudinal screen bars are connected to the inner edge of the frame;
the screen sheet is integrally formed by using a thermoplastic polyurethane elastic material, the hardness of the thermoplastic polyurethane material is 82-92 Shore A, the supporting frame body and the screen sheet are formed into an integral structure by adopting secondary pouring, and the supporting frame body is made of a TDI system two-component polyurethane material;
the fixed part is used for detachably connecting the screen mesh in a screen box of the screen machine body.
Preferably, two ends of the longitudinal screen bars are respectively and fixedly connected to the top surface and the bottom surface of the inner cavity of the frame in a vertical manner, a plurality of connecting grooves are uniformly formed in the front surface of the longitudinal screen bars, the rear ends of the transverse screen bars are fixedly clamped in the connecting grooves, and two ends of the transverse screen bars are respectively and fixedly connected to two side walls of the inner cavity of the frame in a vertical manner;
the transverse screen bars comprise lower screen bar parts and upper screen bar parts, the front ends of the lower screen bar parts are connected with the rear ends of the upper screen bar parts to form an integral structure, the sections of the upper screen bar parts are obtuse triangles, the long sides of the obtuse triangles correspond to the front ends of the lower screen bar parts, and the back surfaces of the upper screen bar parts are flush with the front surfaces of the side frames;
the depth of the connecting groove is 2/5-1/2 times of the width of the lower portion of the screen bar, and the front face of the frame is flush with the front face of the supporting frame body.
Preferably, the fixed part includes external fixation board, supporting strip, pressure holding piece, movable block and spliced pole, supporting strip respectively fixed connection in on the sieve incasement wall of sieve machine body, external fixation board fixed connection in sieve machine body both sides face corresponds the position of supporting strip, external fixation board's lower surface rotates and is connected with the swivel nut, the screw rod has been cup jointed to the inner chamber screw thread of swivel nut, the top of screw rod is run through behind external fixation board's the upper surface with the position fixed connection placed in the middle of the movable block lower surface, being close to of movable block upper surface the perpendicular fixedly connected with outer panel of sieve machine body lateral wall one end, pressure holding piece set up in supporting strip's top, and pressure holding piece upper surface is close to the perpendicular fixedly connected with interior plate of sieve incasement wall one end of sieve machine body, the interior plate with the outer panel respectively along the perpendicular to the direction slip joint in supporting strip upper surface in sieve machine And connecting columns are vertically and fixedly connected between the inner side plates and the opposite surfaces of the outer side plates on the two side surfaces of the body screen box wall body.
Preferably, the sieve sheet is made of thermoplastic polyurethane elastic material, and the hardness of the thermoplastic polyurethane elastic material is 85-90 Shore A.
Preferably, the transverse framework is flat steel with the thickness direction parallel to the surface of the screen, and the longitudinal framework is flat steel with the thickness direction vertical to the surface of the screen.
Preferably, the longitudinal skeleton is a flexible glass fiber strip.
Preferably, the distance between the longitudinal screen bars is 10-12.5 mm, the width of the front end surface of each transverse screen bar is 0.8-1.6 mm, and the minimum clear distance between the adjacent transverse screen bars is 0.35-2.0 mm.
Preferably, the both sides face of sieve machine body sieve case lateral wall be provided with respectively with the interior plate with the spout that the outer panel slip joint matches, the position placed in the middle of the terminal surface is equipped with the notch of spliced pole slip joint in the spout inner chamber.
Preferably, the pressing block comprises an upper groove body, a lower groove body and a spring, the top surface of the upper groove body is vertically and fixedly connected with the bottom end of the inner side plate, and the bottom end of the upper groove body is in sliding sleeve joint with the top end of the lower groove body along the vertical direction;
and the two ends of the spring are respectively and vertically connected to the top surface of the inner cavity of the upper groove body and the bottom surface of the inner cavity of the lower groove body.
Preferably, the side wall of the rotating sleeve is vertically connected with an ear seat along the axial direction.
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 shutdown loss of the screening machine, is convenient to replace and reduces the maintenance cost.
2. The screen disclosed by the invention is characterized in that a plurality of groups of screen sheets 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 a plurality of screen sheets have more blind areas is overcome, the blind areas on the screen 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 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.
5. The screen can be quickly and flexibly fixed and installed on the screen body through the fixing part, and meanwhile, the screen can be conveniently detached from the screen body, so that the labor intensity of maintenance work of the screen body is further reduced, and the maintenance efficiency is improved.
Drawings
FIG. 1 is a schematic overall front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic front view of a fixing portion according to the present invention;
FIG. 4 is a first side view of the fixing portion of the present invention;
FIG. 5 is a second side view of the fixing portion of the present invention;
FIG. 6 is a schematic front view of a screen panel according to the present invention;
FIG. 7 is a schematic bottom view of the screen panel of the present invention;
FIG. 8 is a schematic side view of a screen panel according to the present invention;
FIG. 9 is a schematic perspective view of a screen sheet according to the present invention;
FIG. 10 is a schematic perspective view of a transverse screen bar according to the present invention;
fig. 11 is a schematic perspective view of a longitudinal screen bar according to the present invention.
In the figure: 1-a screen body; 11-a chute; 2-screening a screen; 3-a fixed part; 31-outer fixing plate; 32-a support slat; 33-a pressure holding block; 331-an upper trough body; 332-lower trough body; 333-spring; 334-inner decking; 34-a movable block; 341-outer panel; 35-connecting column; 36-a rotating sleeve; 361-ear seat; 37-screw; 4-a support frame body; 41-transverse supporting bars; 411-transverse skeleton; 42-longitudinal support bar; 421-longitudinal skeleton; 5-sieving sheet; 51-transverse screen bars; 511-lower part of the screen bar; 512-upper part of screen bar; 52-longitudinal screen bars; 521-a connecting groove; 53-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.
Referring to fig. 1 to 11, the present invention provides a technical solution, a screening machine using a polyurethane screen, including a screening machine body 1, a screening machine 2 and a fixing portion 3, wherein the screening machine 2 includes a supporting frame body 4 and a screening sheet 5, the supporting frame body 4 includes a transverse supporting bar 41 and a longitudinal supporting bar 42, the transverse supporting bar 41 and the longitudinal supporting bar 42 form a grid structure, a transverse framework 411 is embedded in the transverse supporting bar 41 along an axial direction, and a longitudinal framework 421 is embedded in the longitudinal supporting bar 42 along the axial direction;
the sieve sheet 5 comprises a frame 53, and a plurality of transverse sieve bars 51 and a plurality of longitudinal sieve bars 52 connected to the inner edge of the frame 53, wherein two ends of each longitudinal sieve bar 52 are respectively and vertically and fixedly connected to the top surface and the bottom surface of the inner cavity of the frame 53, a plurality of connecting grooves 521 are uniformly formed in the front surface of each longitudinal sieve bar 52, the rear ends of the transverse sieve bars 51 are fixedly clamped in the connecting grooves 521, the depth of each connecting groove 521 is 2/5-1/2 times of the width of the lower part 511 of each sieve bar, and two ends of each transverse sieve bar 51 are respectively and vertically and fixedly connected to two side walls of the; the distance between the longitudinal screen bars 52 is 10-12.5 mm;
the width of the front end face of the transverse screen bar 51 and the minimum clear distance between adjacent transverse screen bars 51 can be matched according to the following 6 groups of data:
0.8mm and 0.35 mm;
② 1.0mm and 0.5 mm;
③ 1.0mm and 0.75 mm;
fourthly, 1.25mm and 1.0mm
1.25mm and 1.5 mm;
sixthly, 1.6mm and 2.0 mm.
The transverse screen bars 51 comprise screen bar lower parts 511 and screen bar upper parts 512, the front ends of the screen bar lower parts 511 are connected with the rear ends of the screen bar upper parts 512 to form an integral structure, the sections of the screen bar upper parts 512 are obtuse triangles, the long sides of the obtuse angles correspond to the front ends of the screen bar lower parts 511, and the back surfaces of the screen bar upper parts 512 are flush with the front surfaces of the frames 53;
the front face of the frame 53 is flush with the front face of the supporting frame 4;
the screen sheet 5 is integrally formed by using a thermoplastic polyurethane elastic material, the hardness of the thermoplastic polyurethane material is 85-90 Shore A, the supporting frame body 4 and the screen sheet 5 are formed into an integral structure by adopting secondary pouring, and the supporting frame body 4 is made of a TDI system two-component polyurethane material;
the fixing part 3 comprises an outer fixing plate 31, a supporting lath 32, a pressing block 33, a movable block 34 and a connecting column 35, the supporting lath 32 is respectively and fixedly connected to the inner side wall of the screen box of the screen body 1, the outer fixing plate 31 is fixedly connected to the two side surfaces of the screen body 1 corresponding to the position of the supporting lath 32, the lower surface of the outer fixing plate 31 is rotatably connected with a rotary sleeve 36, a screw 37 is sleeved on the inner cavity thread of the rotary sleeve 36, the top end of the screw 37 penetrates through the upper surface of the outer fixing plate 31 and then is fixedly connected with the middle position of the lower surface of the movable block 34, one end of the upper surface of the movable block 34 close to the outer side wall of the screen body 1 is vertically and fixedly connected with an outer side plate 341, the pressing block 33 is arranged above the supporting lath 32, one end of the upper surface of the pressing block 33 close to the side wall of the screen box of the screen body 1 is vertically and fixedly connected with an inner side plate, and a connecting column 35 is vertically and fixedly connected between the opposite surfaces of the inner side plate 334 and the outer side plate 341.
In this embodiment, the transverse frame 411 is a flat steel whose thickness direction is parallel to the surface of the screen 2; so that the transverse frame 411 makes the transverse supporting bar 41 have stronger bending resistance when in use. The longitudinal skeleton 421 is flat steel with the thickness direction vertical to the surface of the screen 2 or the longitudinal skeleton 421 is a flexible glass fiber strip; so that in use, the longitudinal frame 421 enables the longitudinal support strip 42 to facilitate the arcuate mounting of the screen 2.
In this embodiment, two side surfaces of the side wall of the screen box of the screen machine body 1 are respectively provided with a chute 11 which is in sliding clamping matching with the inner side plate 334 and the outer side plate 341, and a notch which is in sliding clamping connection with the connecting column 35 is arranged in the middle position of the inner end surface of the inner cavity of the chute 11; so that the pressing block 33 and the movable block 34 can move smoothly by the sliding of the inner side plate 334 and the outer side plate 341 in the sliding chute 11, respectively; at the same time, the notches provide a free space for the connecting post 35.
In this embodiment, the pressing block 33 includes an upper tank 331, a lower tank 332, and a spring 333, wherein the top surface of the upper tank 331 is vertically and fixedly connected with the bottom end of the inner side plate 334, the bottom end of the upper tank 331 is slidably sleeved with the top end of the lower tank 332 in the vertical direction, and two ends of the spring 333 are respectively and vertically connected to the top surface of the inner cavity of the upper tank 331 and the bottom surface of the inner cavity of the lower tank 332; so that the edge part of the supporting frame 4 is firmly pressed and fixed on the supporting lath 32 by the clamping plate 33 when in use.
In this embodiment, the side wall of the rotary sleeve 36 is vertically connected with an ear seat 361 along the axial direction; when in use, the rotary sleeve 36 is convenient to rotate through the ear seat 361, so that the screw 37 drives the movable block 34 and the pressing block 33 to move.
The working principle is as follows: the sieve sheet 5 is made of thermoplastic polyurethane elastic material and is molded by injection molding machine in one step, then a plurality of polyurethane sieve sheets 5 are selected, and the sieve sheet 5, the transverse framework 411 and the longitudinal framework 421 are cast into a whole by secondary casting to form the sieve screen 2 with a certain size; when the screen 2 is installed, the two side parts of the support frame 4 of the screen 2 are firstly placed on the upper surface of the support lath 32; then, the screw rod 37 is inserted into the circular hole of the ear seat 361 through a rod-shaped tool so as to rotate the rotary sleeve 36, the rotation of the rotary sleeve 36 enables the screw rod 37 to drive the movable block 34 to move downwards, the movable block 34 drives the outer side plate 341 to slide in the chute 11 on the outer side of the screen box wall body, meanwhile, the outer side plate 341 drives the inner side plate 334 to slide in the chute 11 on the inner side of the screen box wall body through the connecting column 35, and the inner side plate 334 drives the pressing block 33 to move towards the surface of the supporting frame body 4; the end surface of the lower slot 332 contacts the surface of the support frame 4 first, and the spring 333 is further compressed with the continued movement of the upper slot 331, so that the two sides of the support frame 4 are firmly clamped and fixed between the holding block 33 and the support strip 32; so as to realize that the screen 2 is integrally arranged on the screen body 1, and the high edge part of the transverse screen bar 51 faces upwards at the moment, so as to form a cutting effect on the slurry flowing downwards; the solid-liquid mixture that contains certain moisture flows down from the overflow plate of screening machine 1 top branch workbin on the screen (ing) machine body evenly, because the effect of cutting the arris on the horizontal grizzly 51, can cut apart the water film effectively, forces out slime water etc. and the solid particle who is greater than the screen slot skips on horizontal grizzly 51, and moisture and tiny particle ash content will be passed through the sieve by the screen slot, have improved the ability of screen slot interception moisture and ash content for the dehydration of sieve arc and desliming efficiency obtain showing and improve.
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 an use sieve machine of polyurethane screen cloth, includes sieve machine body (1), its characterized in that still includes:
mesh (2) and
the screen mesh comprises a fixing part (3), the screen mesh (2) comprises a supporting frame body (4) and screen pieces (5), the supporting frame body (4) comprises transverse supporting strips (41) and longitudinal supporting strips (42), the transverse supporting strips (41) and the longitudinal supporting strips (42) form a grid structure, transverse frameworks (411) are inlaid in the transverse supporting strips (41) along the axial direction, and longitudinal frameworks (421) are inlaid in the longitudinal supporting strips (42) along the axial direction;
the screen sheet (5) comprises a frame (53), and a plurality of transverse screen bars (51) and a plurality of longitudinal screen bars (52) which are connected to the inner edge of the frame (53), wherein the cross section of the front end of each transverse screen bar (51) is an obtuse triangle, and the opening of the obtuse angle faces the front;
the screen sheet (5) is integrally formed by using a thermoplastic polyurethane elastic material, the hardness of the thermoplastic polyurethane elastic material is 82-92 Shore A, the supporting frame body (4) and the screen sheet (5) are formed into an integral structure by adopting secondary casting, and the supporting frame body (4) is made of a TDI system two-component polyurethane material;
the fixing part (3) is used for detachably connecting the screen (2) in a screen box of the screen body (1).
2. A screen machine using a polyurethane screen according to claim 1, wherein: the two ends of the longitudinal sieve bars (52) are respectively and fixedly connected to the top surface and the bottom surface of the inner cavity of the frame (53) in a vertical mode, a plurality of connecting grooves (521) are uniformly formed in the front surface of the longitudinal sieve bars (52), the rear ends of the transverse sieve bars (51) are fixedly clamped in the connecting grooves (521), and the two ends of the transverse sieve bars (51) are respectively and fixedly connected to the two side walls of the inner cavity of the frame (53) in a vertical mode;
the transverse screen bars (51) comprise screen bar lower parts (511) and screen bar upper parts (512), the front ends of the screen bar lower parts (511) are connected with the rear ends of the screen bar upper parts (512) to form an integral structure, the sections of the screen bar upper parts (512) are obtuse triangles, the long sides of the obtuse triangles correspond to the front ends of the screen bar lower parts (511), and the back surfaces of the screen bar upper parts (512) are flush with the front surfaces of the frames (53);
the depth of the connecting groove (521) is 2/5-1/2 times of the width of the lower part (511) of the screen bar, and the front surface of the frame (53) is flush with the front surface of the supporting frame body (4).
3. A screen machine using polyurethane screens according to claim 2, characterized in that the fixed part (3) comprises:
an outer fixing plate (31);
a support strip (32);
a pressure holding block (33);
a movable block (34) and
a connecting column (35), the supporting strips (32) are respectively fixedly connected to the inner side wall of the sieve box of the sieve body (1), the outer fixing plate (31) is fixedly connected to the two side surfaces of the sieve body (1) corresponding to the positions of the supporting strips (32), the lower surface of the outer fixing plate (31) is rotatably connected with a rotary sleeve (36), a screw (37) is sleeved on the inner cavity thread of the rotary sleeve (36), the top end of the screw (37) penetrates through the upper surface of the outer fixing plate (31) and then is fixedly connected with the middle position of the lower surface of the movable block (34), the upper surface of the movable block (34) is close to the outer side wall (341) at one end of the sieve body (1), the pressing block (33) is arranged above the supporting strips (32), and the upper surface of the pressing block (33) is close to the inner side plate (334) which is vertically and fixedly connected to one end of the side wall of the sieve box of the sieve body (1), the inner side plate (334) and the outer side plate (341) are respectively connected with two side faces of the screen box wall body of the screen machine body (1) in a sliding and clamping mode along the direction perpendicular to the upper surface of the supporting lath (32), and a connecting column (35) is fixedly connected between the opposite faces of the inner side plate (334) and the outer side plate (341) in a perpendicular mode.
4. A screen machine using a polyurethane screen according to claim 1, wherein: the sieve sheet (5) is made of thermoplastic polyurethane elastic material, and the hardness is 85-90 Shore A.
5. A screen machine using a polyurethane screen according to claim 1, wherein: the transverse framework (411) is flat steel with the thickness direction parallel to the surface of the screen (2), and the longitudinal framework (421) is flat steel with the thickness direction perpendicular to the surface of the screen (2).
6. A screen machine using a polyurethane screen according to claim 1, wherein: the longitudinal skeleton (421) is a flexible glass fiber strip.
7. A screen machine using a polyurethane screen according to claim 1, wherein: the interval of vertical grizzly strip (52) is 10 ~ 12.5mm, the width of terminal surface is 0.8 ~ 1.6mm before horizontal grizzly strip (51), and adjacent the minimum clear distance between horizontal grizzly strip (51) is 0.35 ~ 2.0 mm.
8. A screen machine using a polyurethane screen according to claim 3, wherein: the both sides face of sieve machine body (1) sieve case lateral wall be provided with respectively with interior plate (334) with spout (11) that outer panel (341) slip joint matches, the position placed in the middle of spout (11) inner chamber interior terminal surface be equipped with the notch of spliced pole (35) slip joint.
9. A screen machine using polyurethane screen cloth according to claim 8, characterized in that the holding-down block (33) comprises:
an upper tank (331);
a lower tank body (332) and
the top surface of the upper tank body (331) is vertically and fixedly connected with the bottom end of the inner side plate (334), and the bottom end of the upper tank body (331) is in sliding sleeve joint with the top end of the lower tank body (332) along the vertical direction;
two ends of the spring (333) are respectively and vertically connected to the top surface of the inner cavity of the upper groove body (331) and the bottom surface of the inner cavity of the lower groove body (332).
10. A screen machine using a polyurethane screen as claimed in claim 9, wherein: the side wall of the rotary sleeve (36) is vertically connected with an ear seat (361) along the axial direction.
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Cited By (1)
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|---|---|---|---|---|
| CN115318454A (en) * | 2022-08-22 | 2022-11-11 | 安徽昊华环保科技有限公司 | Preparation method of high-permeability wear-resistant screen basket |
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Address after: 235000 No.18 Yunlong Road, Longhu Industrial Park, Huaibei Economic Development Zone, Huaibei City, Anhui Province Patentee after: Fangyuan (Anhui) Intelligent Equipment Co.,Ltd. Address before: No. 18, Yunlong Road, Longhu Industrial Park, Economic Development Zone, 100m west of Leshan District Government, Huaibei City, Anhui Province, 235000 Patentee before: ANHUI FANGYUAN PLASTIC & RUBBER Co.,Ltd. |