Roller top web former

Abstract

The present invention relates to the field of papermaking technology, and in particular to a roller-type top-net former, comprising a main shell, legs are fixed on both sides of the bottom of the main shell, openings are provided on both side walls of the main shell, a water outlet pipe is connected to the bottom of the main shell, a net guide roller is rotatably connected in the main shell on one side of the opening, a wiper mechanism is provided above the net guide roller, and a net calibration roller is rotatably connected on both sides of the main shell on the other side of the opening, a vacuum suction box is fixedly installed on the outside of the main shell, a support plate is provided in the main shell, support rods are fixed at the four corners of the bottom of the support plate, the bottom of the support rod is fixed to the bottom of the main shell, a plurality of circular holes are provided on the support plate, and a lower annular net is installed on the support plate. The former passes the wet paper sheet through the opening on one side of the main shell and then through another opening to process it, and the surface of the wet paper sheet can be wiped by the wiper mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking, in particular to a roller-type top-net former. Background Art

[0002] Paper is a sheet made of plant fiber that can be folded at will for writing. Paper is a carrier for writing and printing, and can also be used for other purposes such as packaging and hygiene, such as printing paper, carbon paper, toilet paper, facial tissue, etc. Paper is a sheet-like fiber product used for writing, printing, painting or packaging. It is generally made of a water suspension of plant fibers that has been pulped, interlaced on a net, initially dehydrated, and then compressed and dried. The roller top net former adds an annular net above the net table of the fourdrinier paper machine. The paper passes between the two layers of the annular net and the lower net table during the forming process, so that the upper and lower sides of the paper web are dehydrated. At the same time, through the extrusion and hydraulic effect between the two layers of the net surface, the limited flocculation is dispersed, and the fiber flocculation in the wet paper sheet is reduced, which can not only improve the paper uniformity, but also reduce the difference between the two sides of the paper structure, thereby achieving the purpose of improving the quality of the paper sheet and improving the printability of the printing paper. The existing former does not fully squeeze the wet paper sheet between the two net surfaces. For this reason, we propose a roller top net former. Summary of the invention

[0003] The purpose of the present invention is to solve the defect of insufficient squeezing of wet paper sheets between two wire surfaces in the prior art, and to propose a roller top wire former.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A roller-type top net former is designed, comprising a main shell, supporting feet are fixed on both sides of the bottom of the main shell, and openings are opened on both side walls of the main shell, and a water outlet pipe is connected to the bottom of the main shell, and a guide net roller is rotatably connected in the main shell on one side of the opening, and a wiper mechanism is arranged above the guide net roller, and a net calibration roller is rotatably connected on both sides of the main shell on the other side of the opening, and a vacuum suction box is fixedly installed on the outside of the main shell, and a support plate is arranged in the main shell, and support rods are fixed at the four corners of the bottom of the support plate, and the bottom of the support rod is fixed to the bottom of the main shell, and a plurality of circular holes are opened on the support plate, and a lower annular net is installed on the support plate, and an upper annular net is placed above the lower annular net, and pulling mechanisms are arranged on both sides of the upper annular net, and a net tightening mechanism is arranged on the upper annular net, and a plurality of nozzles are fixedly installed on the top of the main shell, and the plurality of nozzles are connected by connecting pipes, and the connecting pipes are connected with a water inlet pipe.

[0006] Preferably, the wiper mechanism includes a baffle and a wiper plate, the baffle is fixed on the main shell above the guide roller, a slot is opened below the baffle, the wiper plate is arranged above the guide roller, one end of the wiper plate is inserted in the slot, and inner springs are fixed on both sides of one end of the wiper plate, and one end of the inner spring is fixed to the inner wall of the slot.

[0007] Preferably, the pulling mechanism includes side sliding holes and side rods, the sliding holes are opened on both sides of the side walls of the main shell, the side rods are fixed on both sides of the side walls of the upper annular net, and one end of the side rod passes through the sliding hole and extends outward, and a pulling rod is fixed between the two side rods.

[0008] Preferably, the pull rod outer sleeve is provided with an anti-slip sleeve.

[0009] Preferably, the net tightening mechanism includes a sliding hole and a slot plate, the sliding hole is opened above the main shell, the slot plate is rotatably connected to the net tightening roller, and the net tightening roller contacts the upper annular net, and an upper plate is arranged above the slot plate, and sliding rods are fixed on both sides above the slot plate, one end of the sliding rod passes through the upper plate and is fixed with a rod limiting plate, the sliding rod outer sleeve is provided with a spring, one end of the spring is fixed to the slot plate, and the other end of the spring is fixed to the bottom of the upper plate, an upper rod is fixed on the upper plate, one end of the upper rod passes through the sliding hole and is fixed to the sliding block, side plates are fixed on the main shells on both sides above the sliding hole, bearings are fixed on the side plates, one bearing is connected with a reciprocating screw, one end of the reciprocating screw passes through the sliding block and the other bearing, the reciprocating screw and the sliding block are connected by a thread, and one end of the reciprocating screw is connected to a driving mechanism.

[0010] Preferably, the driving mechanism comprises a motor, the motor is mounted on one side above the main housing, one side of the motor is connected to a rotating shaft, and the rotating shaft is connected to the reciprocating screw via an insertion mechanism.

[0011] Preferably, the insertion mechanism comprises a slot plate and a rectangular insert block, the slot plate is fixed on the reciprocating screw, the rectangular insert block is fixed on the rotating shaft, and the rectangular insert block is inserted in the slot plate.

[0012] Preferably, a water receiving sluice is placed between the two supporting legs, a slide rail is fixed on one side of the supporting legs, a slide groove is provided on one side of the slide rail, slide plates are fixed on both sides above the water receiving sluice, and the slide plates are slidably arranged in the slide groove, grooves are provided on both sides of the slide plate, and balls are rotatably connected in the grooves.

[0013] The roller top screen former proposed by the present invention has the beneficial effects that: the former passes the wet paper sheet through an opening on one side of the main shell and then through another opening to process it, the surface of the wet paper sheet can be scraped by a wiper mechanism, the wet paper sheet can be squeezed by a lower ring screen and an upper ring screen, thereby reducing fiber flocs in the wet paper sheet and improving paper uniformity, and the wet paper sheet can be squeezed more fully between the lower ring screen and the upper ring screen by a tight screen mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a roller top mesh former proposed by the present invention.

[0015] Figure 2 The figure is a schematic diagram of the top structure of a roller top mesh former proposed by the present invention.

[0016] Figure 3 The figure is a side structural schematic diagram of a roller top mesh former proposed by the present invention.

[0017] Figure 4 The present invention provides a schematic structural diagram of a wiper mechanism of a roller top mesh former.

[0018] Figure 5 The present invention provides a schematic diagram of the insertion mechanism of a roller top mesh former.

[0019] Figure 6 This is an enlarged schematic diagram of the A-section structure of a roller top mesh former proposed in the present invention.

[0020] In the figure: main shell 1, support foot 2, opening 3, water outlet pipe 4, wiper mechanism 5, wiper plate 51, baffle 52, slot 53, inner spring 54, insertion mechanism 6, slot plate 61, rectangular plug 62, guide roller 7, calibration roller 8, support plate 9, round hole 10, support rod 11, lower annular net 12, upper annular net 13, tight net roller 14, slot plate 15, slide bar 16, spring 17, upper plate 18, upper rod 19, slider 20, side plate 21, bearing 22, reciprocating screw 23, rotating shaft 24, motor 25, sliding hole 26, rod limit plate 27, side sliding hole 28, side rod 29, pull rod 30, anti-skid sleeve 31, nozzle 32, connecting pipe 33, water inlet pipe 34, water receiving stub 35, slide rail 36, slide groove 37, slide plate 38, groove 39, ball 40, vacuum suction box 41. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1

[0023] Reference Figure 1-4 A roller top net former comprises a main shell 1, legs 2 are fixed on both sides of the bottom of the main shell 1, openings 3 are provided on both side walls of the main shell 1, a water outlet pipe 4 is connected to the bottom of the main shell 1, a net guide roller 7 is rotatably connected in the main shell 1 on one side of the opening 3, a water scraping mechanism 5 is provided above the net guide roller 7, a net calibration roller 8 is rotatably connected on both sides of the main shell 1 on the other side of the opening 3, a vacuum suction box 41 is fixedly installed on the outside of the main shell 1, a support plate 9 is provided in the main shell 1, support rods 11 are fixed at the four corners of the bottom of the support plate 9, the bottom of the support rod 11 is fixed to the bottom of the main shell 1, a plurality of round holes 10 are provided on the support plate 9, and the support plate 9 A lower annular net 12 is installed on the upper part, an upper annular net 13 is placed above the lower annular net 12, pulling mechanisms are arranged on both sides of the upper annular net 13, a net tightening mechanism is arranged on the upper annular net 13, a plurality of nozzles 32 are fixedly installed on the upper part of the main shell 1, the plurality of nozzles 32 are connected by a connecting pipe 33, a water inlet pipe 34 is connected to the connecting pipe 33, the wet paper sheet surface can be wiped by the wiper mechanism 5, the wet paper sheet can be squeezed by the lower annular net 12 and the upper annular net 13, so as to reduce the fiber flocs in the wet paper sheet and improve the paper uniformity, and the wet paper sheet can be squeezed more fully between the lower annular net 12 and the upper annular net 13 by the net tightening mechanism.

[0024] Example 2

[0025] Reference Figure 4 As another preferred embodiment of the present invention, the difference from Embodiment 1 is that the wiper mechanism 5 includes a baffle 52 and a wiper plate 51, the baffle 52 is fixed on the main shell 1 above the guide roller 7, a slot 53 is provided below the baffle 52, the wiper plate 51 is arranged above the guide roller 7, one end of the wiper plate 51 is inserted into the slot 53, and inner springs 54 are fixed on both sides of one end of the wiper plate 51, one end of the inner spring 54 is fixed to the inner wall of the slot 53, and the inner spring 54 can make the wiper plate 51 contact with the surface of the wet paper sheet more closely.

[0026] Example 3

[0027] Reference Figure 1-3 As another preferred embodiment of the present invention, the difference from Embodiment 1 is that the pulling mechanism includes side sliding holes 28 and side rods 29. The sliding holes 28 are opened on both sides of the side wall of the main shell 1, and the side rods 29 are fixed on both sides of the side walls of the upper annular net 13. One end of the side rods 29 passes through the sliding holes 28 and extends outward. A pull rod 30 is fixed between the two side rods 29. The outer cover of the pull rod 30 is provided with an anti-slip sleeve 31. Pulling the pull rod 30 upward can pull the upper annular net 13 upward, so that the wet paper sheets can pass between the lower annular net 12 and the upper annular net 13.

[0028] Example 4

[0029] Reference Figure 1-3 As another preferred embodiment of the present invention, the difference from embodiment 1 is that the net tightening mechanism includes a sliding hole 26 and a slot plate 15, the sliding hole 26 is opened above the main shell 1, and the net tightening roller 14 is rotatably connected in the slot plate 15, and the net tightening roller 14 is in conflict with the upper part of the upper annular net 13, and an upper plate 18 is arranged above the slot plate 15, and sliding rods 16 are fixed on both sides of the upper part of the slot plate 15, one end of the sliding rod 16 passes through the upper plate 18 and is fixed with a rod limiting plate 27, and a spring 17 is arranged on the outer sleeve of the sliding rod 16, one end of the spring 17 is fixed on the slot plate 15, and the other end of the spring 17 is fixed to the bottom of the upper plate 18, and the spring 17 can make the net tightening roller 14 and the upper annular net 13 contact more closely, and an upper rod 19 is fixed on the upper plate 18, and the upper rod 1 9 one end passes through the slide hole 26 and is fixed with a slider 20, side plates 21 are fixed on the main shell 1 on both sides above the slide hole 26, bearings 22 are fixed on the side plates 21, one of the bearings 22 is connected with a reciprocating screw 23, one end of the reciprocating screw 23 passes through the slider 20 and the other bearing 22, the reciprocating screw 23 is connected to the slider 20 through a thread, one end of the reciprocating screw 23 is connected with a driving mechanism, the reciprocating screw 23 can be driven to rotate by the driving mechanism, the reciprocating screw 23 can drive the slider 20 to do a reciprocating motion when it rotates, and can drive the tight net roller 14 to roll above the upper annular net 13, so that the wet paper sheets can be squeezed more fully between the lower annular net 12 and the upper annular net 13.

[0030] The driving mechanism includes a motor 25, which is installed on one side above the main shell 1. A rotating shaft 24 is connected to one side of the motor 25. The rotating shaft 24 and the reciprocating screw 23 are connected through an insertion mechanism 6. The insertion mechanism 6 includes a slot plate 61 and a rectangular plug 62. The slot plate 61 is fixed on the reciprocating screw 23, and the rectangular plug 62 is fixed on the rotating shaft 24. The rectangular plug 62 is inserted in the slot plate 61. By starting the motor 25, the rotating shaft 24 can be driven to rotate. The rotation of the rotating shaft 24 can drive the reciprocating screw 23 to rotate through the insertion mechanism 6.

[0031] Example 5

[0032] Reference Figure 1-6 As another preferred embodiment of the present invention, the difference from Embodiment 1 is that a water receiving stub 35 is placed between the two supporting legs 2, a slide rail 36 is fixed on one side of the supporting legs 2, a slide groove 37 is provided on one side of the slide rail 36, slide plates 38 are fixed on both sides above the water receiving stub 35, and the slide plates 38 are slidably arranged in the slide groove 37, grooves 39 are provided on both sides of the slide plates 38, and balls 40 are rotatably connected in the grooves 39, so that the water discharged from the water outlet pipe 4 can be stored through the water receiving stub 35.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller top web former, comprising a main housing (1), wherein legs (2) are fixed on both sides of the bottom of the main housing (1), characterized in that: The two side walls of the main shell (1) are provided with openings (3), and the bottom of the main shell (1) is connected to a water outlet pipe (4). A guide net roller (7) is rotatably connected to the main shell (1) on one side of the opening (3), and a water scraping mechanism (5) is arranged above the guide net roller (7). Both sides of the main shell (1) on the other side of the opening (3) are rotatably connected to a calibration net roller (8). A vacuum suction box (41) is fixedly installed on the outside of the main shell (1). A support plate (9) is arranged in the main shell (1), and support rods (11) are fixed at the four corners of the bottom of the support plate (9). The bottom of the support rod (11) is fixed to the bottom of the main shell (1), a plurality of circular holes (10) are opened on the support plate (9), a lower annular net (12) is installed on the support plate (9), an upper annular net (13) is placed above the lower annular net (12), pulling mechanisms are arranged on both sides of the upper annular net (13), a net tightening mechanism is arranged on the upper annular net (13), a plurality of spray heads (32) are fixedly installed on the upper part of the main shell (1), the plurality of spray heads (32) are connected by connecting pipes (33), and a water inlet pipe (34) is connected to the connecting pipe (33); The wiper mechanism (5) comprises a baffle (52) and a wiper plate (51); the baffle (52) is fixed on the main housing (1) above the net guide roller (7); a slot (53) is provided below the baffle (52); the wiper plate (51) is arranged above the net guide roller (7); one end of the wiper plate (51) is inserted into the slot (53); and inner springs (54) are fixed on both sides of one end of the wiper plate (51); one end of the inner spring (54) is fixed to the inner wall of the slot (53); The net tightening mechanism comprises a sliding hole (26) and a slot plate (15), wherein the sliding hole (26) is provided above the main housing (1), a net tightening roller (14) is rotatably connected in the slot plate (15), and the net tightening roller (14) is in contact with the upper part of the upper annular net (13), an upper plate (18) is arranged above the slot plate (15), sliding rods (16) are fixed on both sides of the upper part of the slot plate (15), one end of the sliding rod (16) passes through the upper plate (18) and is fixed with a rod limiting plate (27), a spring (17) is provided on the outer sleeve of the sliding rod (16), one end of the spring (17) is fixed on the slot plate (15), and the other end of the spring (17) is fixed on the slot plate (15). The end is fixed to the bottom of the upper plate (18), an upper rod (19) is fixed on the upper plate (18), one end of the upper rod (19) passes through a sliding hole (26) and is fixed with a sliding block (20), side plates (21) are fixed on the main shell (1) on both sides above the sliding hole (26), bearings (22) are fixed on the side plates (21), one of the bearings (22) is connected to a reciprocating screw rod (23), one end of the reciprocating screw rod (23) passes through the sliding block (20) and the other bearing (22), the reciprocating screw rod (23) and the sliding block (20) are connected by a thread, and one end of the reciprocating screw rod (23) is connected to a driving mechanism; The driving mechanism comprises a motor (25), the motor (25) being mounted on one side above the main housing (1), one side of the motor (25) being connected to a rotating shaft (24), the rotating shaft (24) being connected to the reciprocating screw rod (23) via an insertion mechanism (6); The inserting mechanism (6) comprises a slot plate (61) and a rectangular insert block (62), wherein the slot plate (61) is fixed on the reciprocating screw rod (23), the rectangular insert block (62) is fixed on the rotating shaft (24), and the rectangular insert block (62) is inserted in the slot plate (61); 2. A roller top mesh former according to claim 1, characterized in that: The pulling mechanism comprises a side sliding hole (28) and a side rod (29), wherein the sliding hole (28) is opened on both sides of the side wall of the main shell (1), and the side rod (29) is fixed on both sides of the side wall of the upper annular net (13), and one end of the side rod (29) passes through the sliding hole (28) and extends outward, and a pulling rod (30) is fixed between the two side rods (29).

3. A roller top mesh former according to claim 2, characterized in that: The outer cover of the pull rod (30) is provided with an anti-slip cover (31).

4. A roller top mesh former according to claim 1, characterized in that: A water receiving stub (35) is placed between the two supporting legs (2), a slide rail (36) is fixed on one side of the supporting legs (2), a slide groove (37) is provided on one side of the slide rail (36), slide plates (38) are fixed on both sides above the water receiving stub (35), and the slide plates (38) are slidably arranged in the slide grooves (37), grooves (39) are provided on both sides of the slide plates (38), and balls (40) are rotatably connected in the grooves (39).

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