CN111112042A - Mesh belt screen of macromolecular ring belt level-return motion screen surface and manufacturing method of special mesh belt - Google Patents

Abstract

A mesh belt screen with a high-molecular ring belt for the screen surface to move back and forth and a method for manufacturing the special mesh belt thereof. The existing grading sieve mainly uses a vibrating sieve, and has the defects of low yield and easy blockage of a sieve surface. The invention comprises the following components: the whole framework of equipment (1), the sieve case (2) that articulates on the framework, be equipped with head pulley (21) and tailwheel (22) in the sieve case, rotation drive arrangement (23) is connected to the head pulley, level back drive arrangement (24) is connected to the sieve case, polymer clitellum sifter (3) are on head pulley (21) and tailwheel (22) as the conveyer belt cover, have on the polymer clitellum sifter to screen reason hole (31), polymer clitellum sifter both sides have sclausura district (32) of nai wear, sclausura district width 15-100 millimeters that wear-resistants, the sifter lower part with material contact of polymer clitellum sifter has bearing roller (4), be connected with the material stopping plate on the both sides boxboard of sieve case. The invention is used for the physical classification of solid particulate materials such as foodstuffs.

Description

Mesh belt screen of macromolecular ring belt level-return motion screen surface and manufacturing method of special mesh belt

Technical Field

The invention relates to a sieve which is made of high polymer materials, has a horizontal and linear compound motion mode and is used for grading food raw materials and other solid particle materials, and a manufacturing method of a special mesh belt thereof.

Background

The physical material grading sieve is widely used for grading treatment of various materials in the industries of grains and the like. The existing grading sieve mainly uses a mesh belt sieve as a main part, and has the defects of low yield, easy blockage of a sieve surface, incapability of continuously using, short service life and poor sieving effect, and the sieve surface needs to be cleaned frequently and replaced regularly by manpower.

During the screening, grain moves along with the conveyer belt, owing to do not stir and hang and jump, therefore wherein less granule hugs closely the screen surface all the time, can pass through sieve discharge end at any time, and the screening effect weakens gradually in the motion process to make the granule that is greater than sieve mesh size move to the export direction rapidly, outside the discharge machine, accomplish the whole screening of material, can produce serious hierarchical in the screening, and long and thin straw is difficult to screen for a long time.

The mesh belt screen has no bottleneck of large-area popularization, is not provided with a special screen suitable for use, and is not successful in a large number of experiments by using a hinged and woven steel wire screen. Articulated and weave steel wire screen cloth have a common shortcoming, and the steel wire is scurry the position easily when walking promptly, leads to sieve mesh grow, adjacent sieve mesh diminishes, changes the sieve mesh shape, makes the screening work normally go on, for example when we remove the little miscellaneous in the grain with rectangular hole sieve, the sifter is advancing the in-process, and the sieve mesh grow just can make a large amount of grains fall into impurity, causes the loss.

Meanwhile, the woven steel wire screen is easy to break, the service life is generally about 10 days, the requirement of normal continuous work can not be met far away, a large number of experiments are carried out by using the hinged punching plate, the hinged punching plate is heavy in weight, the screen hole connecting position is easy to deform, and even the screen is broken.

Disclosure of Invention

The invention aims to provide a mesh belt screen of a high-molecular ring belt translational motion screen surface and a manufacturing method of a special mesh belt thereof, wherein the mesh belt screen can be used for a long time and basically does not need manual cleaning.

The purpose of the invention is realized as follows:

a mesh belt screen of a high molecular ring belt horizontal movement screen surface comprises the following components: the integral framework of the equipment is hinged with a screen box on the framework, a head wheel and a tail wheel are installed in the screen box, the head wheel is connected with a rotation driving device, the screen box is connected with a horizontal return driving device, a polymer ring belt screen surface is sleeved on the head wheel and the tail wheel as a conveying belt, a screen mesh hole is formed in the polymer ring belt screen surface, nonporous wear-resistant areas are arranged on two sides of the polymer ring belt screen surface, the nonporous wear-resistant areas are 15-100mm wide, a carrier roller is arranged on the lower portion of the screen surface, in contact with materials, of the polymer ring belt screen surface, and baffle plates are connected to box plates on two sides of the screen box.

The mesh belt sieve of the high-molecular girdle back-and-forth movement sieve surface is characterized in that the high-molecular girdle sieve surface is a polyurethane sieve surface or an organic composite sieve surface, the organic composite sieve surface comprises a tensile layer and a surface layer, the tensile layer is silk or base cloth, the surface layer is an adhesive layer or a polyurethane coating of latex or rubber, and the carrier roller is transversely or longitudinally arranged.

The mesh belt sieve with the polymer girdle flat-back movement sieve surface is characterized in that one end of a material stopping plate is fixed on the sieve box, the other end of the material stopping plate is lapped on a nonporous wear-resistant area of the polymer girdle sieve surface, a bracket is arranged at the lower part of the material stopping plate, the cross section of the bracket is L-shaped, one side of the L-shaped bracket is connected with the side wall of the sieve box, and the other side of the L-shaped bracket lifts the nonporous wear-resistant area of the sieve surface.

The mesh belt screen of the polymer endless belt level-return movement screen surface is characterized in that a nonporous tensile reinforcement belt is arranged in the middle of the polymer endless belt screen surface, the nonporous tensile reinforcement belt is longitudinally arranged at an interval of 80-500 mm, or the nonporous tensile reinforcement belt is longitudinally and transversely arranged at an interval of 80-600 mm, the longitudinally arranged interval is 90-500 mm, the tensile reinforcement belt is 8-80 mm wide, the expanded length of the mesh belt is 2-18 m, and the width of the mesh belt is 0.8-5 m.

The mesh belt sieve of the high-molecular ring belt horizontal-return motion sieve surface is characterized in that the sieve holes are round holes, elliptical holes or polygonal holes, the multi-shape holes comprise triangular holes, square holes, long-strip-shaped holes and hexagonal honeycomb holes, when small impurities in grains are sieved, the long-strip-shaped holes are 10-80mm long and 0.8-4mm wide, the long round holes are arranged in a staggered mode, and the length direction of the long round holes is consistent with the advancing direction.

The mesh belt screen with the polymer girdle flat-back movement screen surface is characterized in that the diameter of the wire is 0.01-10 mm, the thickness of a surface layer wrapped outside the wire is 0.2-7mm, the number of layers of the base cloth is 1-5 when the base cloth is taken as a tensile layer on the composite screen surface, organic glue or polyurethane is distributed between adjacent base cloth, the thickness of the composite screen surface with the base cloth as the tensile layer is 0.8-25 mm, and the back surface of the polymer girdle screen surface is provided with a limit strip.

The mesh belt sieve with the polymer annulus translational motion sieve surface comprises a v-shaped steel plate and a wear-resistant organic plate, wherein the wear-resistant organic plate is fixed on one side of the v-shaped steel plate through a bolt, and the other side of the v-shaped steel plate is fixed on a sieve box through a bolt, so that a material blocking structure is formed, and materials are prevented from falling.

The mesh belt screen with the polymer ring belt translational motion screen surface is characterized in that the diameter of a head wheel is 1-3 times that of a tail wheel, the wires comprise longitudinal wires and transverse wires, the longitudinal wires are flexible wires and coated with an organic surface layer to form polymer flexible longitudinal lacing wires, the transverse wires are flexible wires or rigid wires, and the polymer flexible transverse lacing wires or rigid transverse lacing wires are coated with the organic surface layer.

The manufacturing method of the screen surface of the mesh belt screen of the polymer ring belt horizontal movement screen surface comprises the following steps: the template is provided with a pouring belt with longitudinal and transverse grooves according to the mesh size, the side length of the mesh is 1.5mm-200mm, and both sides of the template are provided with nonporous wear-resistant areas with the width of 15-100mm to form belts; placing flexible wires in the longitudinal grooves, wherein the flexible wires comprise metal ropes and polymer ropes, and placing the flexible wires or the rigid rods in the transverse grooves; melting polyurethane material, pouring polyurethane liquid into the longitudinal groove and the transverse groove to form a non-porous wear-resistant area and an end connection area which are integrated, and taking out a finished product after polyurethane solidification to finish the manufacturing.

The method for manufacturing the screen surface of the mesh belt screen of the polymer ring belt horizontal movement screen surface comprises the following steps of: wrapping polyurethane outside the flexible tensile rope to prepare a longitudinal polymer ring belt mesh belt lacing wire;

manufacturing a transverse lacing wire: wrapping polyurethane outside the rigid rod or the organic rope or the steel wire rope to prepare a transverse high-molecular ring belt mesh belt lacing wire; designing the mesh size of the screen according to the screened materials, and bonding a longitudinal polymer girdle mesh belt lacing wire and a transverse polymer girdle mesh belt lacing wire in a physical or chemical mode to prepare a polymer girdle mesh belt screen surface screen body; and (3) coating or casting polyurethane liquid on the left side and the right side of the screen surface of the high-molecular ring belt mesh belt to form a non-porous wear-resistant area, breaking the non-porous wear-resistant area according to a specified length, and reserving a connecting joint to finish the manufacture.

Advantageous effects

The invention relates to a mesh belt screen, which is characterized in that 1, the traditional mesh belt screen does not have a plane rotation function, the screened objects do not roll during screening, the contact frequency of the screened objects and screen holes is low, the falling probability is low, the screening effect is poor, and the efficiency is low.

According to the flexible annular motion screen surface developed by the invention, the wire or the organic cloth is fixed through the organic glue or the polyurethane, the screen holes are not deformed, the wear resistance of the wire or the cloth is increased, the service life of the annular screen surface is prolonged, meanwhile, the wire or the organic cloth can meet the pulling force required by rotation, the long-time stable work of the screen surface is ensured, and the experiment is carried out, the screen surface does not change after continuous work for 100 days.

The two sides of the annular moving screen surface are provided with the hole-free wear-resistant areas, so that material particles are prevented from being embedded to increase the friction resistance, the power consumption is increased, the contact position of the material stopping plate and the screen surface is ensured to be smooth, the wear resistance is increased, and the service life is prolonged. The data are obtained through a large number of experiments, the deviation range of different materials and different sizes of annular screen surfaces is 20-180mm when the annular screen surfaces run, and the wear-resistant area is designed to be 20-180mm, so that the materials are prevented from falling off, and the efficient area can be ensured to the maximum extent. The surface of the annular moving screen surface is made of high polymer materials, so that the friction force on the surface of the moving mesh belt can be increased, and the surface of a head pulley does not need to be coated with glue.

The lower part of the screen surface, which is in contact with the material, of the screen surface of the high-molecular endless belt is provided with the carrier roller, and the carrier roller can support the screen surface, ensure the motion stability of the screen surface and ensure the screening effect.

When the plane of the screen box rotates, materials are easily thrown into the joint of the screen surface and the screen box, so that the waste of the screened materials and the grading effect are reduced. The screen box of the invention is fixed with the material stopping plates at two sides, and the material stopping plates are lapped on the moving annular screen surface, thereby thoroughly solving the problem of material falling. The material stopping plate is formed by connecting a steel plate and an organic plate, the rigidity of the material stopping plate is increased, the problem of deformation of the material stopping plate is solved, and meanwhile, the problem of wear resistance is solved. The lower part of the material blocking plate is provided with a bracket, the cross section of the bracket is L-shaped, one side of the bracket is connected with the side wall of the screen box, and the other side of the bracket lifts the nonporous wear-resistant area of the screen surface, so that the material blocking plate and the nonporous wear-resistant area are in stable lap joint, and the screening effect is ensured in long-time screening work. The middle of the material blocking plate is provided with a nonporous tensile reinforcing belt which is longitudinally or longitudinally and transversely arranged, so that the tensile force of a mesh belt can be increased, the stress on two sides and the stress on the middle part of the mesh belt are kept balanced, and the deformation of a screen hole is prevented, through a large amount of experiments, the longitudinal arrangement interval of the nonporous tensile reinforcing belt is 100mm-800mm, the transverse arrangement interval is 200mm-700mm when the nonporous tensile reinforcing belt is longitudinally and transversely arranged, and the longitudinal arrangement interval is 150mm-900mm, so that the tensile force requirement can be met, and.

Aiming at different materials, the invention can adopt sieve pores with different shapes and sizes, and repeated research and a large number of experiments prove that the long strip-shaped holes for sieving out small impurities in grains are optimal, the small impurities can be sieved out, and meanwhile, strip-shaped light organic impurities such as fine crushed straws and the like which are difficult to sieve can be sieved out, which is a difficult problem which can not be solved by the traditional cleaning sieve for many years, and the long strip-shaped holes with the length of 10-60mm and the width of 0.5-4mm are optimal parameters when the small impurities in grains are sieved out.

When the wires are used as the tensile main body, the wire diameters of various diameters such as wire ropes, steel wire ropes and the like are selected within the range of 0.01mm-20mm, the thickness of an organic matter surface layer coated outside is 0.2m-10mm, when materials such as grains with small volume weight and small particles are screened, the wires with small diameter and a coating layer with thin thickness can be selected, and when materials with large volume weight and large particles are screened, the thicker wires and the thicker coating layer are selected. When the composite screen surface uses organic cloth or flexible wires as the tensile layer, the number of layers of the organic cloth or flexible wires can be 1-5 according to the volume weight of materials and the screening amount per hour, organic glue or polyurethane is distributed between adjacent organic cloth or flexible wires, the tensile force and the stability of the screen surface can be enhanced, and tests show that the thickness of the composite screen surface is within the range of 0.5 mm-20mm, and the screening of various materials can be met.

The diameter of the head wheel is 1-3 times of that of the tail wheel, the diameter of the head wheel is increased, the driving friction force can be increased, the sliding of the moving screen surface during working is prevented, and the optimal friction angle is ensured. The tail wheel diameter is reduced, so that the space can be saved.

The invention adopts the polymer mesh belt for conveying and screening, particularly realizes the optimal friction effect when the screening experiment of grains and peanut seeds is carried out, not only ensures that the materials obtain the optimal rolling and friction parameters, but also obtains the optimal screening effect. Through test and inspection, the screening effect and efficiency of the invention are several times higher than those of metal screens, thus obtaining the impressive technical progress effect, prolonging the service life by several times or even dozens of times and greatly reducing the cost. The invention breaks through the theory that the screen surface of the traditional vibrating screen and the plane-returning screen must be used obliquely, and is the development direction for carrying out physical classification on the particle materials in the future.

Description of the drawings:

FIG. 1 is a schematic view of the main body of the polymer endless screen surface mesh belt screen of the present invention.

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

FIG. 4 is a schematic diagram of the screen surface of a polymer endless belt screen for removing small impurities from grains.

Fig. 5 is an enlarged schematic view of a portion b of fig. 4.

FIG. 6 is a schematic diagram of a high molecular endless belt screen with square holes (suitable for screening large and medium impurities in grains).

Fig. 7 is an enlarged schematic view of part c of fig. 6.

Fig. 8 is a schematic cross-sectional view of fig. 6 (with the inner layer having a base cloth).

Fig. 9 is an enlarged schematic view of a portion d of fig. 8.

Fig. 10 is a schematic diagram of the screen surface of the longitudinal flexible tie bar and the transverse rigid tie bar (the steel bar passes through the steel wire rope and then is placed in a mold for casting).

Fig. 11 is an enlarged schematic view of part e of fig. 10.

Figure 12 is a schematic diagram of a mesh belt screen surface with cross tie bar lap joints.

FIG. 13 is a schematic view of the attachment of the endless belt screen surface to the drum of the present invention.

FIG. 14 is a schematic representation of a polymeric endless belt screen surface having two layers of wires in accordance with the present invention.

The specific implementation mode is as follows:

example 1:

a mesh belt screen of a high molecular ring belt horizontal movement screen surface comprises the following components: the screen box is connected with a horizontal-return driving device 24 to enable the screen box to do plane rotary motion, the screen surface of the high polymer endless belt is provided with screen cleaning holes 31, two sides of the screen surface of the high polymer endless belt are provided with nonporous wear-resistant areas 32, the nonporous wear-resistant areas are 15-100mm wide, such as 15, 20, 30, 40, 50, 60, 70, 80, 90 and 100mm, the wider the screen surface, the wider the width of the nonporous wear-resistant areas, and the lower part of the screen surface of the high polymer endless belt, which is in contact with materials, is provided with a carrier roller 4. And the box plates on the two sides of the screen box are connected with material blocking plates.

Example 2:

the mesh belt screen with the polymer endless belt translational motion screen surface in the embodiment 1, the polymer endless belt may be a polyurethane screen surface or a composite screen surface with reinforcing ribs, the composite screen surface includes a tensile layer with reinforcing ribs and a surface layer 33, the tensile layer is a metal or organic anti-drawing wire 34 or a base fabric 35, and the surface layer is a rubber layer of latex or rubber or a polyurethane coating. The carrier rollers are transversely or longitudinally arranged, and the direction of the carrier rollers is vertical to the moving direction of the sieve during working or consistent with the moving direction of the sieve surface

Example 3:

the mesh belt screen of the polymer annulus translational motion screen surface of embodiment 1 or 2, the two side box plates of the screen box are connected with the material blocking plate 5 to prevent the material from dropping from the two sides of the screen surface, one end of the material blocking plate is fixed on the screen box, and the other end is lapped on the non-porous wear-resistant area 32 of the polymer annulus screen surface. The lower part of the material blocking plate is provided with a bracket 6, the cross section of the bracket is L-shaped, one side of the L-shaped bracket is connected with the side wall of the screen box, and the other side of the L-shaped bracket lifts the non-porous wear-resistant area of the screen surface.

The material stopping plate comprises v-shaped steel 51 and a wear-resistant organic plate 52, the wear-resistant organic plate is fixed on one side of the v-shaped steel plate 51 through bolts, and the other side of the v-shaped steel plate is fixed on the screen box through bolts to form a material stopping structure, so that materials are prevented from falling.

Example 4:

the mesh-belt screen with a polymer endless belt back-and-forth movement screen surface of embodiment 1, 2 or 3, wherein the polymer endless belt screen surface has a non-porous tensile reinforcement belt 36 in the middle of the polymer endless belt screen surface, the non-porous tensile reinforcement belt is longitudinally arranged with an interval of 80mm to 500mm, 100, 200, 300, 400, 500mm, the non-porous tensile reinforcement belt is longitudinally and transversely arranged with an interval of 80mm to 600mm, such as 100, 200, 300, 400, 500, 600, 700mm, 800 mm; the longitudinal arrangement interval is 90mm-500mm, such as 100, 200, 300, 400, 500mm, the width of the tensile reinforcement belt is 8mm-80mm, such as 8, 20, 30, 40, 50, 60, 70, 80, 90, 100 mm; 2-18 m, such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 m, and the width of the screen surface of the polymer endless belt is 0.8-5 m, such as 0.5, 1, 2, 3, 4, 5 m.

Example 5:

the mesh belt screen with the polymer endless belt flat-back moving screen surface of embodiment 1, 2, 3 or 4, wherein the screen mesh holes 31 are round holes, oval holes or polygonal holes, the multi-shaped holes comprise triangular holes, square holes, elongated holes and hexagonal honeycomb holes, and the elongated holes have a length of 10-80mm, such as 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75 and 80mm when small impurities in grains are screened out;

the screen holes 31 are 0.5-4mm wide, such as 0.5, 1, 1.3, 2, 2.5, 3, 2.5, 4 mm.

The screen holes 31 may not be limited to a specific shape, but may be adapted to the passing area and the shape of the screen,

example 6:

the polymer endless belt back-and-forth screen surface mesh belt screen of examples 1 or 2 or 3 or 4 or 5, wherein the filaments have a diameter of 0.01mm to 10mm, e.g., 0.01, 0.5, 1.0, 1.5, 2.0, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12mm, and wherein the filaments have an outer coating layer thickness of 0.2 to 7mm, e.g., 0.2, 0.5, 1, 1.5, 2.0, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8mm,

When the base cloth 35 is used as the tensile layer of the composite screen surface, the number of layers of the base cloth is 1-5, such as 1 layer, 2 layers, 3 layers, 4 layers and 5 layers, organic glue or polyurethane is distributed between adjacent base cloths, and the thickness of the composite screen surface taking the base cloth as the tensile layer is 0.8mm-25mm, such as 0.5, 1.0, 1.5, 2.0, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 16, 17, 18, 19 and 20 mm. The back of the polymer endless belt screen surface is provided with a limit strip.

Example 7:

the mesh belt screen with a polymer endless belt translational motion screen surface according to embodiment 1 or 2 or 3 or 4 or 5 or 6, wherein the diameter of the head pulley is 1-3 times of that of the tail pulley, the filaments include longitudinal filaments and transverse filaments, the longitudinal filaments are flexible filaments, the longitudinal filaments are coated with an organic surface layer to form polymer flexible longitudinal tie bars 37, the transverse filaments are flexible filaments or rigid filaments, and the polymer flexible transverse tie bars 38 or rigid transverse tie bars 39 are formed after the organic surface layer is coated. And (3) transversely stringing steel ropes by using steel bars according to the length of the square sieve pores regularly, putting the steel ropes into a mold, pouring polyurethane, and pouring wear-resistant areas on two sides.

The longitudinal wires of the screen surface are steel wire ropes with the diameter of 14mm, and the transverse wires of the screen surface are steel bars with the diameter of 10 mm.

The longitudinal wires are high molecular endless wires, the transverse wires are high molecular endless wires or rigid wires, and supporting rollers are arranged on the lower portion of the screen surface, which is in contact with materials.

Example 8:

a method for manufacturing a screen surface 3 of a mesh belt screen of a macromolecular endless belt flat-back motion screen surface, which comprises the following steps: the template is provided with a pouring belt with longitudinal and transverse grooves according to the mesh size, the side length of the mesh is 1.5mm-200mm, and two sides of the template are provided with non-porous wear-resistant areas with the width of 20-180mm to form the belt; placing flexible wires in the longitudinal grooves, wherein the flexible wires comprise metal ropes and polymer ropes, and placing the flexible wires or the rigid rods in the transverse grooves; melting polyurethane material, pouring polyurethane liquid into the longitudinal groove and the transverse groove to form a non-porous wear-resistant area and an end connection area which are integrated, and taking out a finished product after polyurethane solidification to finish the manufacturing.

Example 9:

the method of making the screen surface of the belt screen of the polymer endless belt back-and-forth movement screen surface of any of examples 1 to 7: manufacturing a high polymer flexible longitudinal lacing bar 36: wrapping polyurethane outside the flexible tensile rope to prepare a longitudinal polymer ring belt net belt lacing wire 36; designing the mesh size of the screen according to the screened materials, and bonding a longitudinal polymer girdle mesh belt lacing wire and a transverse polymer girdle mesh belt lacing wire in a physical or chemical mode to prepare a polymer girdle mesh belt screen surface screen body; and (3) coating or casting polyurethane liquid on the left side and the right side of the screen surface of the high-molecular ring belt mesh belt to form a non-porous wear-resistant area, breaking the non-porous wear-resistant area according to a specified length, and reserving a connecting joint to finish the manufacture.

And (3) wrapping polyurethane outside the rigid rod or the organic rope or the steel wire rope to prepare the transverse mesh belt wire.

Claims (10)

1. A mesh belt screen of a high molecular ring belt horizontal movement screen surface comprises the following components: the whole framework of equipment articulates the sieve case on the framework, the sieve incasement be equipped with head pulley and tailwheel, the head pulley connect and rotate drive arrangement, characterized by: the screen box is connected with a horizontal driving device, a polymer ring belt screen surface is sleeved on the head wheel and the tail wheel as a conveying belt, screen holes are formed in the polymer ring belt screen surface, nonporous wear-resistant areas are arranged on two sides of the polymer ring belt screen surface, the nonporous wear-resistant areas are 20-180mm wide, and a carrier roller is arranged on the lower portion of the screen surface, which is in contact with materials, of the polymer ring belt screen surface.

2. The mesh belt screen with polymer endless belt translational screen surface as claimed in claim 1, wherein: the polymer ring belt screen surface is a polyurethane screen surface or an organic composite screen surface, the composite screen surface comprises a tensile layer and a surface layer, the tensile layer is silk or base cloth, and the surface layer is an adhesive layer or a polyurethane coating of latex or rubber.

3. The mesh belt screen with polymer endless belt translational screen surface as claimed in claim 1 or 2, wherein: the screen box is characterized in that box plates on two sides of the screen box are connected with material blocking plates, materials are prevented from falling from two sides of a screen surface, one end of each material blocking plate is fixed on the screen box, the other end of each material blocking plate is connected to a hole-free wear-resistant area of the screen surface of the polymer ring belt in a lap joint mode, a bracket is arranged on the lower portion of each material blocking plate, the cross section of each bracket is L-shaped, one side of each L-shaped bracket is connected with the side wall of the screen box, and the other side of each L.

4. The mesh belt screen with polymer endless belt translational screen surface as claimed in claim 1, 2 or 3, wherein: the middle part of the screen surface of the high-molecular endless belt is provided with nonporous tensile reinforcement belts, the nonporous tensile reinforcement belts are longitudinally arranged with the interval of 100mm-800mm, or the nonporous tensile reinforcement belts are longitudinally and transversely arranged with the interval of 200mm-700mm, the longitudinally arranged interval of 150mm-900mm, the tensile reinforcement belts are 20mm-150mm wide, the expanded length of the mesh belt is 1.2-18 m, and the width of the mesh belt is 0.5-5 m.

5. The mesh belt screen with polymer endless belt translational screen surface as claimed in claim 1, 2, 3 or 4, wherein: the screen holes are round holes, elliptical holes or polygonal holes, the multi-shape holes comprise triangular holes, square holes, long-strip-shaped holes and hexagonal honeycomb holes, and when small impurities in grains are screened out, the long-strip-shaped holes are 10-80mm long and 0.5-4mm wide.

6. The mesh belt screen of polymer endless belt translational motion screen surface according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the diameter of the silk is 0.01mm-20mm, the surface layer thickness of the external wrapping of the silk is 0.2-10mm, when the composite screen surface takes the base cloth as the tensile layer, the number of layers of the base cloth is 1-5, organic glue or polyurethane is distributed between adjacent base cloth, and the composite screen surface taking the base cloth as the tensile layer has the thickness of 0.5mm-15 mm.

7. The mesh belt screen of polymer endless belt translational motion screen surface according to claim 1, 2, 3, 4, 5 or 6, characterized in that: the material stopping plate comprises a v-shaped steel plate and a wear-resistant organic plate, the wear-resistant organic plate is fixed on one side of the v-shaped steel plate through bolts, the other side of the v-shaped steel plate is fixed on the screen box through bolts, a material stopping structure is formed, and materials are prevented from falling.

8. The mesh belt screen with polymer endless belt translational motion screen surface as claimed in claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: the head pulley diameter be 1-3 times of tail pulley diameter, the silk include vertical silk and horizontal silk, vertical silk be flexible silk, form the flexible vertical lacing wire of polymer behind the organic surface course of parcel, horizontal silk be flexible silk or rigid silk, form the flexible horizontal lacing wire of polymer or the horizontal lacing wire of rigidity behind the organic surface course of parcel.

9. A method of making a screen surface of a polymer endless belt screen surface of any one of claims 1 to 8, comprising: the method is characterized in that: the template is provided with a pouring belt with longitudinal and transverse grooves according to the mesh size, the side length of the mesh is 1.5mm-200mm, and two sides of the template are provided with non-porous wear-resistant areas with the width of 20-180mm to form the belt; placing flexible wires in the longitudinal grooves, wherein the flexible wires comprise metal ropes and polymer ropes, and placing the flexible wires or the rigid rods in the transverse grooves; melting polyurethane material, pouring polyurethane liquid into the longitudinal groove and the transverse groove to form a non-porous wear-resistant area and an end connection area which are integrated, and taking out a finished product after polyurethane solidification to finish the manufacturing.

10. A method of making a screen surface of a polymer endless belt screen surface of any one of claims 1 to 8, comprising: the method is characterized in that: preparing a high polymer flexible longitudinal lacing wire: wrapping polyurethane outside the flexible tensile rope to prepare a longitudinal polymer ring belt mesh belt lacing wire;

manufacturing a transverse lacing wire: wrapping polyurethane outside the rigid rod or the organic rope or the steel wire rope to prepare a transverse high-molecular ring belt mesh belt lacing wire; designing the mesh size of the screen according to the screened materials, and bonding a longitudinal polymer girdle mesh belt lacing wire and a transverse polymer girdle mesh belt lacing wire in a physical or chemical mode to prepare a polymer girdle mesh belt screen surface screen body; and (3) coating or casting polyurethane liquid on the left side and the right side of the screen surface of the high-molecular ring belt mesh belt to form a non-porous wear-resistant area, breaking the non-porous wear-resistant area according to a specified length, and reserving a connecting joint to finish the manufacture.

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