A paper press device

Abstract

The application relates to the technical field of papermaking pressing, in particular to a papermaking pressing device which comprises a plurality of left-right symmetrical side support frames, a first pressing roller, a rotating roller and a first tensioning roller are rotatably installed on the side support frames, a wet blanket is arranged around the first pressing roller, the rotating roller and the first tensioning roller, a gantry which stands on the ground is arranged at one position of the wet blanket, an adjusting mechanism is arranged at the upper end of the gantry, lifting assemblies are respectively connected to the left and right sides of the adjusting mechanism, a feeding mechanism is arranged at the position of the gantry behind the adjusting mechanism, a pressing mechanism is arranged at the middle part of the gantry, and a tensioning assembly is arranged in front of the pressing mechanism. The papermaking pressing device limits the passing amount of the paper pulp by arranging an auxiliary feeding mechanism in front of the first pressing roller, the auxiliary feeding mechanism blocks the paper pulp, the pressing mechanism pre-presses the water in the paper pulp at the same time, and thus the appropriate paper pulp enters the first pressing roller.

Description

Technical Field

[0001] This invention relates to the field of papermaking pressing technology, and in particular to a papermaking pressing apparatus. Background Technology

[0002] The paper press is a key piece of equipment used to process paper pulp. It helps remove excess water and allows the fibers to bind more tightly in the paper. This process determines the density and thickness of the paper, and also affects its texture.

[0003] In existing papermaking press devices, when excessive pulp wants to pass through the press rolls, the press rolls will block some of the pulp from passing through, causing it to accumulate at the inlet of the press rolls. When a large amount of pulp accumulates at the inlet in an instant, the pulp forms a barrier at the inlet, preventing subsequent pulp from entering the press rolls and causing paper breakage. To address this, the present invention provides a papermaking press device. Summary of the Invention

[0004] I. Technical problem to be solved: The paper pressing device provided by the present invention can solve the problems pointed out in the background art above.

[0005] II. Technical Solution: To achieve the above objectives, the present invention adopts the following technical solution: a paper pressing device, comprising several symmetrical side support frames, on which a first pressing roller, a rotating roller and a first tensioning roller are rotatably mounted, and a wet blanket surrounds the first pressing roller, the rotating roller and the first tensioning roller, and a gantry frame standing on the ground is provided at one point of the wet blanket, and an adjustment mechanism is provided at the upper end of the gantry frame, and lifting components are respectively connected to the left and right sides of the adjustment mechanism.

[0006] The adjusting mechanism includes a No. 1 motor fixedly installed on the upper end of the gantry frame, and the output shaft of the No. 1 motor is connected to a rotating shaft through a coupling. A first pulley is fixedly connected to the outer circumference of the rotating shaft. The lifting assembly includes several fixed blocks fixedly connected to the side wall of the gantry frame, and a lead screw is rotatably installed on each fixed block. A second pulley is fixedly connected to the upper end of each lead screw. A first belt is connected between the first pulley and one of the second pulleys. A second belt is connected between adjacent second pulleys. A carrier is threadedly connected to the circumference of each lead screw, and a second tension roller is rotatably connected between corresponding carriers. Side plates are provided at both ends of the second tension roller.

[0007] Preferably, the gantry frame is provided with an auxiliary feeding mechanism at the rear of the adjustment mechanism. The auxiliary feeding mechanism includes a second motor fixedly installed on the left side of the gantry frame. The output shaft of the second motor is connected to a drive shaft through a coupling, and the drive shaft is rotatably installed between the gantry frame and the drive shaft. An upper blanket is surrounded on the drive shaft and several second tension rollers, and the upper blanket is located above the wet blanket.

[0008] Preferably, a pressing mechanism is provided in the middle of the gantry frame. The pressing mechanism includes a cylinder fixedly installed in the middle of the gantry frame. A moving block is fixedly connected to the output end of the cylinder. A support column is fixedly connected to the upper end of the moving block. A bracket is fixedly connected to the upper end of the support column. A second pressing roller is rotatably sleeved on the bracket. The second pressing roller is in contact with the wet blanket.

[0009] Preferably, a tensioning assembly is provided in front of the pressing mechanism. The tensioning assembly includes an inclined groove opened on the front side of the moving block. An inclined rod is slidably installed in the inclined groove and is slidably connected to the gantry frame. A clamp is bolted to the end of the inclined rod away from the inclined groove. A shaft sleeve is fixedly sleeved inside the inclined rod and the clamp. A third tensioning roller is axially rotatably connected to the shaft sleeve and abuts against the wet blanket.

[0010] Preferably, the lengths of the threaded portions of the lead screws decrease sequentially from front to back, and the pitches of the lead screws decrease sequentially from front to back.

[0011] Preferably, the side discs at both ends of the second tension roller are in contact with the left and right sides of the wet blanket.

[0012] Preferably, when the plurality of second tensioning rollers move up and down, the upper blanket is always in a tensioned state, and the distance between the upper blanket and the wet blanket gradually decreases from front to back.

[0013] Preferably, the second press roll and the third tension roll move at the same speed.

[0014] III. Beneficial Effects:

[0015] 1. The paper pressing device limits the amount of pulp passing through by setting an auxiliary feeding mechanism in front of the first press roll. While the auxiliary feeding mechanism blocks the pulp, the pressing mechanism pre-presses the water in the pulp, so that an appropriate amount of pulp enters the first press roll, so as to prevent the pulp from accumulating at the inlet of the first press roll and causing paper breakage.

[0016] 2. This paper pressing device, by adjusting the mechanism to drive the lifting assembly, changes the position of the second tension roll, thereby changing the distance between the upper and wet blankets. This alters the limiting coefficient of the auxiliary feeding mechanism on the pulp, allowing the auxiliary feeding mechanism to work with the first tension roll to produce paper of different thicknesses, thus improving the adaptability of the device.

[0017] 3. The paper pressing device, by setting a tensioning component, ensures that when the second pressure roller on the pressing mechanism tensions the wet blanket, the tensioning component releases a corresponding amount of wet blanket simultaneously, so that the wet blanket is always in a tensioned state, ensuring the rationality of the wet blanket operation. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the upper end of the gantry frame of the present invention.

[0022] Figure 4 This is the present invention. Figure 3 Enlarged view of point A in the middle.

[0023] Figure 5 This is the present invention. Figure 3 Enlarged view of point B in the middle.

[0024] Figure 6 This is the present invention. Figure 3 Enlarged view of point C.

[0025] Figure 7 This is a cross-sectional view of the middle section of the gantry frame of the present invention.

[0026] Figure 8 This is the present invention. Figure 7 Enlarged view of point D.

[0027] Figure 9 This is the present invention. Figure 7 Enlarged view of point E in the middle.

[0028] Reference numerals: 1. Side support frame; 2. First press roller; 3. Rotary roller; 4. First tension roller; 5. Wet blanket; 6. Gantry frame; 7. Adjustment mechanism; 701. Motor No. 1; 702. First pulley; 703. First belt; 8. Lifting assembly; 801. Fixed block; 802. Lead screw; 803. Second pulley; 804. Second belt; 805. Carrier; 806. Second tension roller; 807. 9. Side plate; 10. Auxiliary feeding mechanism; 11. No. 2 motor; 12. Drive shaft; 13. Upper blanket; 14. Pressing mechanism; 15. Cylinder; 16. Moving block; 17. Support column; 18. Bracket; 19. Second press roller; 10. Tensioning assembly; 11. Inclined groove; 12. Inclined rod; 13. Shaft cylinder; 14. Clamp; 15. Third tensioning roller. Detailed Implementation

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0030] See Figure 1 and Figure 2According to an embodiment of the present invention, a papermaking pressing device includes several symmetrical side support frames 1. A first pressing roller 2, a rotating roller 3 and a first tensioning roller 4 are rotatably mounted on the side support frames 1. A wet blanket 5 surrounds the first pressing roller 2, the rotating roller 3 and the first tensioning roller 4. A gantry frame 6 standing on the ground is provided at one point of the wet blanket 5. An adjustment mechanism 7 is provided at the upper end of the gantry frame 6, and lifting components 8 are respectively connected to the left and right sides of the adjustment mechanism 7.

[0031] During operation, the first pressing roller 2 consists of an upper pressing roller and a lower pressing roller. The upper pressing roller is located above the wet blanket 5, and the lower pressing roller is located below the wet blanket 5. The first tensioning roller 4 squeezes the wet blanket 5, so that the wet blanket 5 is in a tensioned state.

[0032] See Figures 2-5 The adjusting mechanism 7 includes a first motor 701 fixedly installed on the upper end of the gantry frame 6, and the output shaft of the first motor 701 is connected to a rotating shaft through a coupling. A first pulley 702 is fixedly connected to the outer circumference of the rotating shaft. The lifting assembly 8 includes several fixed blocks 801 fixedly connected to the side wall of the gantry frame 6. A lead screw 802 is rotatably installed on each fixed block 801. A second pulley 803 is fixedly connected to the upper end of each lead screw 802. A first belt 703 is connected between the first pulley 702 and one of the second pulleys 803. A second belt 804 is connected between adjacent second pulleys 803. Carriers 805 are threadedly connected to the circumference of the lead screw 802. A second tension roller 806 is rotatably connected between corresponding carriers 805. Side plates 807 are provided at both ends of the second tension roller 806.

[0033] During operation, the adjusting mechanism 7 drives the lifting assembly 8 to change the position of the second tensioning roller 806. Specifically, the first motor 701 drives one of the lead screws 802 to rotate via the first belt 703. The rotating lead screw 802 drives the remaining lead screws 802 to rotate via the second belt 804, thereby moving the carriers 805 on the several lead screws 802 and driving the second tensioning roller 806 to rise and fall.

[0034] See Figure 2 , Figure 3 and Figure 6 The gantry frame 6 is provided with an auxiliary feeding mechanism 9 behind the adjustment mechanism 7. The auxiliary feeding mechanism 9 includes a second motor 901 fixedly installed on the left side of the gantry frame 6. The output shaft of the second motor 901 is connected to a drive shaft 902 through a coupling. The drive shaft 902 is rotatably installed between the gantry frame 6 and the drive shaft 902 and several second tension rollers 806 are surrounded by an upper blanket 903, and the upper blanket 903 is located above the wet blanket 5.

[0035] During operation, the adjusting mechanism 7 adjusts the position of the second tensioning roller 806 on the lifting assembly 8, causing the distance between the upper blanket 903 and the wet blanket 5 to change. When several second tensioning rollers 806 move upward, the distance between the upper blanket 903 and the wet blanket 5 increases, and when several second tensioning rollers 806 move downward, the distance between the upper blanket 903 and the wet blanket 5 decreases.

[0036] See Figure 2 , Figure 3 , Figure 7 and Figure 8 A pressing mechanism 10 is provided in the middle of the gantry frame 6. The pressing mechanism 10 includes a cylinder 1001 fixedly installed in the middle of the gantry frame 6. A moving block 1002 is fixedly connected to the output end of the cylinder 1001. A support column 1003 is fixedly connected to the upper end of the moving block 1002. A bracket 1004 is fixedly connected to the upper end of the support column 1003. A second pressing roller 1005 is rotatably sleeved on the bracket 1004. The second pressing roller 1005 is in contact with the wet blanket 5.

[0037] During operation, the second press roller 1005 is located between the adjacent second tension roller 806. After the second press roller 1005 presses against the wet blanket 5, the second press roller 1005 rotates on the support 1004, while the wet blanket 5 can still move.

[0038] See Figure 2 , Figures 7-9 A tensioning assembly 11 is provided in front of the pressing mechanism 10. The tensioning assembly 11 includes an inclined groove 1101 opened on the front side of the moving block 1002. An inclined rod 1102 is slidably installed in the inclined groove 1101 and is slidably connected to the gantry frame 6. A clamp 1104 is bolted to the end of the inclined rod 1102 away from the inclined groove 1101. A shaft cylinder 1103 is fixedly sleeved inside the inclined rod 1102 and the clamp 1104. A third tensioning roller 1105 is axially rotatably connected to the shaft cylinder 1103 and abuts against the wet blanket 5.

[0039] During operation, the tensioning assembly 11 moves synchronously with the pressing mechanism 10. The third tensioning roller 1105 releases the wet blanket 5, providing conditions for the second pressing roller 1005 to lift the wet blanket 5. Specifically, while the moving block 1002 moves upward, the moving block 1002 pushes the inclined rod 1102 forward, causing the third tensioning roller 1105 to release the wet blanket 5.

[0040] See Figure 3 and Figure 5 The length of the threaded portion of several lead screws 802 decreases sequentially from front to back, and the pitch of several lead screws 802 decreases sequentially from front to back.

[0041] During operation, when the axial rotation speed of several lead screws 802 is the same, the movement speed of their respective carriers 805 is different. The movement speed of the foremost carrier 805 is the fastest, and it decreases sequentially to the rear.

[0042] See Figure 3 and Figure 5 The side discs 807 at both ends of the second tension roller 806 are attached to the left and right sides of the wet blanket 5.

[0043] During operation, the side plate 807 blocks the pulp on both sides of the upper end of the wet blanket 5 to prevent the pulp from overflowing from the left and right sides of the wet blanket 5.

[0044] See Figure 2 , Figure 3 and Figure 6 As several second tension rollers 806 move up and down, the upper blanket 903 is always in a taut state, and the distance between the upper blanket 903 and the wet blanket 5 gradually decreases from front to back.

[0045] During operation, the upper blanket 903, which is supported by several second tension rollers 806 and drive shaft 902, forms a triangular structure with an arc base. As the position of the second tension rollers 806 moves, the lengths of the three sides of the triangle change, but the sum of the lengths of the three sides remains fixed.

[0046] See Figures 7-9 The second press roll 1005 and the third tension roll 1105 move at the same speed.

[0047] During operation, while the third tension roller 1105 releases the wet blanket 5, the second press roller 1005 pushes the wet blanket 5 upward. The length of the wet blanket 5 released by the third tension roller 1105 is the same as the length of the wet blanket 5 pushed up by the second press roller 1005, so that the wet blanket 5 is always kept taut.

[0048] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0049] Working principle: In actual use, the pulp moves from front to back on the upper end of the wet blanket 5. Before the pulp passes the first press roller 2, the auxiliary feeding mechanism 9 adjusts the amount of pulp to ensure that an appropriate amount of pulp enters the first press roller 2. Specifically, under the force of the wet blanket 5, the pulp enters from the front of the upper blanket 903 between the upper blanket 903 and the wet blanket 5. The distance between the upper blanket 903 and the wet blanket 5 gradually decreases from front to back. The second motor 901 drives the upper blanket 903 to rotate counterclockwise via the drive shaft 902, thus... As the pulp is blocked by the upper blanket 903, it gradually becomes thinner. When the pulp enters between the upper blanket 903 and the wet blanket 5, the pressing mechanism 10 pre-presses the water in the pulp to remove some of the water, making it easier for the pulp to enter the first press roller 2. Specifically, the cylinder 1001 pushes the moving block 1002 upward, causing the support column 1003 and the bracket 1004 to move upward. As a result, the second press roller 1005 on the bracket 1004 lifts the wet blanket 5 and squeezes the pulp between the upper blanket 903 and the wet blanket 5.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A papermaking press device comprising a plurality of left-right symmetrical side support frames, characterized in that: The first press roller, the rotating roller and the first tensioning roller are rotatably installed on the side support frame, and a wet blanket is wrapped around the first press roller, the rotating roller and the first tensioning roller; the wet blanket is provided with a gantry standing on the ground; the upper end of the gantry is provided with an adjusting mechanism, and the left and right sides of the adjusting mechanism are respectively connected with lifting assemblies; The adjusting mechanism comprises a No. 1 motor fixedly installed at the upper end of the gantry, the output shaft of the No. 1 motor is connected with a rotating shaft through a coupling, the circumferential outer wall of the rotating shaft is fixedly connected with a first pulley, the lifting assemblies comprise a plurality of fixed blocks fixedly connected to the side walls of the gantry, a screw rod is rotatably arranged on each fixed block, the upper end of each screw rod is fixedly connected with a second pulley, a first belt is connected between the first pulley and one of the second pulleys, and a second belt is connected between adjacent second pulleys, the circumferences of the screw rods are respectively threadedly connected with carriers, and the second tensioning rollers are rotatably connected between the carriers corresponding to each other, and side discs are arranged at the two ends of the second tensioning rollers; The auxiliary feeding mechanism is arranged at the position behind the adjusting mechanism of the gantry, the auxiliary feeding mechanism comprises a No. 2 motor fixedly installed on the left side of the gantry, the output shaft of the No. 2 motor is connected with a driving shaft through a coupling, and the driving shaft is rotatably installed between the gantry, the driving shaft and the second tensioning rollers are wrapped with an upper blanket, and the upper blanket is located above the wet blanket, and the side discs at the two ends of the second tensioning rollers are attached to the left and right sides of the wet blanket; The pressing mechanism is arranged in the middle of the gantry, the pressing mechanism comprises a cylinder fixedly installed in the middle of the gantry, the output end of the cylinder is fixedly connected with a moving block, the upper end of the moving block is fixedly connected with a support column, the upper end of the support column is fixedly connected with a support, a second press roller is rotatably sleeved on the support, and the second press roller is attached to the wet blanket; The tensioning assembly is arranged in front of the pressing mechanism, the tensioning assembly comprises an inclined slot formed in the front side of the moving block, an inclined rod is slidably installed in the inclined slot, and the inclined rod is slidably connected with the gantry, a clamping hoop is bolted to the end of the inclined rod away from the inclined slot, an axle cylinder is fixedly sleeved in the inclined rod and the clamping hoop, a third tensioning roller is axially rotatably connected with the axle cylinder, and the third tensioning roller abuts against the wet blanket; When the second tensioning rollers move up and down, the upper blanket is always in a tensioning state, and the distance from the upper blanket to the wet blanket gradually decreases from front to back; The auxiliary feeding mechanism is arranged in front of the first press roller, the passing amount of the paper pulp is limited, and the auxiliary feeding mechanism blocks the paper pulp while the pressing mechanism pre-presses the water in the paper pulp, so that the appropriate amount of paper pulp enters the first press roller.

2. A papermaking press apparatus according to claim 1, characterized in that: The lengths of the threaded portions of the screw rods gradually decrease from front to back, and the pitches of the screw rods gradually decrease from front to back.

3. A papermaking press apparatus as claimed in claim 1, characterized in that: The second press roller and the third tensioning roller have the same moving speed.

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