Squeezing and dewatering device for wood pulp offset paper production

Abstract

The utility model discloses a squeezing dehydration device for wood pulp offset paper production, which relates to the field of mechanical dehydration of wood pulp offset paper and comprises a lower roller, a rubber coating layer is wrapped on the periphery of the lower roller, a dehydration mechanism is arranged on the outer side of the lower roller, and the dehydration mechanism comprises a water absorption blanket, a transmission component and a drainage component. The water absorption blanket is located between the stone roller and the lower roller, the transmission assembly is used for driving the water absorption blanket to conduct transmission, the drainage unit is located on the inner side of the water absorption blanket, and the drainage unit is used for receiving water extruded out of the water absorption blanket and discharging the water. The transmission assembly comprises two upper transmission rollers and a lower transmission roller, the two upper transmission rollers are located on the same horizontal plane, and the lower transmission roller is located below the position between the two upper transmission rollers. Through the arrangement of the drainage assembly, the problem that water splashes upwards again after dripping downwards can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical dehydration of wood pulp offset paper, in particular to a pressing dehydration device for producing wood pulp offset paper. Background Art

[0002] During the production of offset paper, the wood pulp is filtered to form a preliminary paper, which then needs to be mechanically dehydrated and dried before it can be formed.

[0003] In the prior art, after the offset paper is squeezed by the upper and lower rollers, the moisture in the absorbent felt reaches saturation. After the absorbent felt is squeezed in the pressure zone, the moisture overflows from the felt and drips downwards. Generally, a water collecting device is required to collect and discharge the pressurized overflowing water. However, in this process, the water dripping downwards is prone to splash upwards, causing the moisture to contact the lower roller and the inner side of the absorbent felt. Utility Model Content

[0004] The purpose of the utility model is to provide a pressing and dehydrating device for producing wood pulp offset paper in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a pressing and dewatering device for producing wood pulp offset paper, comprising a lower roller, the outer periphery of which is wrapped with a rubber layer, a dewatering mechanism being provided on the outer side of the lower roller, the dewatering mechanism comprising a water-absorbing felt, a transmission assembly, and a drainage assembly;

[0006] The absorbent felt is located between the stone roller and the lower roller, the transmission assembly is used to drive the absorbent felt to transmit, the drainage unit is located on the inner side of the absorbent felt, and the drainage unit is used to receive and discharge the water squeezed out of the absorbent felt;

[0007] The transmission assembly includes two upper transmission rollers and a lower transmission roller. The two upper transmission rollers are located on the same horizontal plane. The lower transmission roller is located below the two upper transmission rollers. The absorbent felt is wrapped around the outer walls of the upper transmission rollers and the lower transmission roller.

[0008] As a further solution of the present invention: the transmission assembly also includes a transmission wheel fixedly connected to the upper transmission roller and one end of the lower transmission roller, the three transmission wheels are connected by a transmission belt, and two limiting wheels are provided at an eccentric position above the lower transmission roller below the transmission belt, and the two limiting wheels are rotatably connected to the support surface.

[0009] As a further solution of the present invention: the drainage unit includes a water receiving box arranged on the outer side of the lower roller, the top of the water receiving box is an open structure, the rotating shafts at both ends of the lower roller pass through the outside of the end plate of the water receiving box, and are rotatably connected to the end plate of the water receiving box through bearings, two water-guiding inclined surfaces are symmetrically formed on both sides of the bottom end plate of the water receiving box, the end where the two water-guiding inclined surfaces contact is the high point, a drainage port is opened on the end plate of the water receiving box, and the bottom end of the inner wall of the drainage port is aligned with the low point of the water-guiding inclined surface;

[0010] A support plate connected to the ground is fixedly connected to the outside of the end plate of the water receiving box and located above the drain outlet.

[0011] As a further solution of the present invention: a water receiving blanket is installed on the inner wall of the water receiving box below the lower roller, the cross section of the water receiving blanket is a "V"-shaped structure, and the water receiving blanket is a hollow structure.

[0012] As a further solution of the present invention: the inner wall of the water-receiving blanket is vertically fixedly connected with support rods, and there is a gap between adjacent support rods.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up drainage components, the problem of water splashing upward again after dripping downward can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the water receiving box of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the water-collecting blanket of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the water-collecting blanket of the present invention.

[0019] In the figure: 1. Lower roller; 2. Rubber layer; 3. Water-absorbing blanket; 4. Upper drive roller; 5. Lower drive roller; 6. Drive wheel; 7. Drive belt; 8. Limit wheel; 9. Water collection box; 10. Water guide slope; 11. Drain outlet; 12. Water collection blanket; 13. Support rod; 14. Support plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 In an embodiment of the present invention, a pressing and dewatering device for producing wood pulp offset paper includes a lower roller 1, the outer periphery of the lower roller 1 is wrapped with a rubber layer 2, and a dewatering mechanism is provided on the outer side of the lower roller 1, the dewatering mechanism includes a water-absorbing felt 3, a transmission assembly and a drainage assembly; the water-absorbing felt 3 is located between the stone roller and the lower roller 1, the transmission assembly is used to drive the water-absorbing felt 3 for transmission, and the drainage unit is located on the inner side of the water-absorbing felt 3, and the drainage unit is used to receive and discharge the water squeezed out of the water-absorbing felt 3; the transmission assembly includes two upper transmission rollers 4 and a lower transmission roller 5, the two upper transmission rollers 4 are located on the same horizontal plane, the lower transmission roller 5 is located below between the two upper transmission rollers 4, and the water-absorbing felt 3 is wrapped around the outer walls of the upper transmission roller 4 and the lower transmission roller 5.

[0022] In this embodiment, the offset paper that has been filtered and preliminarily formed is squeezed by the upper stone roller and the lower lower roller 1 during movement. At this time, there is a water pressure difference between the absorbent felt 3 and the preliminarily formed offset paper. Under the squeezing, the moisture in the preliminarily formed offset paper is transferred to the absorbent felt 3. The moisture in the absorbent felt 3 gradually increases until the moisture in the absorbent felt 3 reaches saturation. After that, the moisture is squeezed out of the absorbent felt 3 by the upper stone roller and the lower lower roller 1 and falls into the drainage component, which discharges the falling water.

[0023] Please refer to Figure 1 The transmission assembly also includes a transmission wheel 6 fixedly connected to the upper transmission roller 4 and one end of the lower transmission roller 5. The three transmission wheels 6 are connected by a transmission belt 7. Two limiting wheels 8 are provided at an eccentric position above the lower transmission roller 5 below the transmission belt 7. The two limiting wheels 8 are rotatably connected to the support surface.

[0024] In this embodiment, a rotary motor connected to a transmission wheel 6 is started, and the rotary motor drives the transmission wheel 6 connected thereto to rotate. The transmission wheel 6 drives the other two transmission wheels 6 to rotate synchronously through the transmission belt 7, thereby realizing the transmission of the absorbent blanket 3. The setting of the limiting wheel 8 can maintain the transmission wrap angle between the transmission wheel 6 and the transmission belt 7.

[0025] It should be noted that the supporting surface refers to the side plate of the mechanical extrusion device.

[0026] Please refer to Figure 2 and Figure 3 The drainage unit includes a water receiving box 9 arranged on the outside of the lower roller 1. The top of the water receiving box 9 is an open structure. The rotating shafts at both ends of the lower roller 1 pass through the outside of the end plate of the water receiving box 9 and are rotatably connected to the end plate of the water receiving box 9 through bearings. Two water guiding slopes 10 are symmetrically formed on both sides of the bottom end plate of the water receiving box 9. The end where the two water guiding slopes 10 contact is the high point. A drain outlet 11 is provided on the end plate of the water receiving box 9, and the bottom end of the inner wall of the drain outlet 11 is aligned with the low point of the water guiding slope 10; a support plate 14 connected to the ground is fixedly connected to the outside of the end plate of the water receiving box 9 and above the drain outlet 11.

[0027] In this embodiment, when the absorbent felt 3 passes through the nip zone, water is squeezed out of the absorbent felt 3 and falls into the water receiving box 9, and contacts the water receiving felt 12, forming a buffering adsorption effect, which can prevent the water dripping downward from splashing upward after contacting the water receiving box 9. The water passing through the water receiving felt 12 can drip downward after the water receiving felt 12 is saturated with water, and is discharged from the drain outlet 11 through the water guide slope 10.

[0028] Please refer to Figure 4 The inner wall of the water receiving box 9 is located below the lower roller 1 and is equipped with a water receiving blanket 12. The cross-section of the water receiving blanket 12 is a "V"-shaped structure, and the water receiving blanket 12 is a hollow structure. The inner wall of the water receiving blanket 12 is vertically fixedly connected with a support rod 13, and there is a gap between adjacent support rods 13.

[0029] In this embodiment, the hollow water-collecting blanket 12 can reduce the water absorption of the water-collecting blanket 12, and the setting of the support rod 13 can increase the force on the water-collecting blanket 12, so that the water-collecting blanket 12 always maintains its current shape. The setting of the gap makes it easier to separate water from the water-collecting blanket 12.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressing and dewatering device for producing wood pulp offset paper, comprising a lower roller (1), the outer periphery of the lower roller (1) being wrapped with a rubber layer (2), characterized in that: A dewatering mechanism is provided on the outer side of the lower roller (1), and the dewatering mechanism comprises a water-absorbing blanket (3), a transmission assembly, and a drainage assembly; The absorbent blanket (3) is located between the stone roller and the lower roller (1), the transmission assembly is used to drive the absorbent blanket (3) to transmit, the drainage unit is located on the inner side of the absorbent blanket (3), and the drainage unit is used to receive and discharge the water squeezed out of the absorbent blanket (3); The transmission assembly comprises two upper transmission rollers (4) and a lower transmission roller (5), wherein the two upper transmission rollers (4) are located on the same horizontal plane, and the lower transmission roller (5) is located below between the two upper transmission rollers (4), and the absorbent felt (3) is wrapped around the outer walls of the upper transmission rollers (4) and the lower transmission roller (5).

2. The pressing and dehydrating device for producing wood pulp offset paper according to claim 1, characterized in that: The transmission assembly further comprises a transmission wheel (6) fixedly connected to one end of the upper transmission roller (4) and the lower transmission roller (5), the three transmission wheels (6) being connected by transmission belts (7), two limiting wheels (8) being provided below the transmission belts (7) and at eccentric positions above the lower transmission roller (5), the two limiting wheels (8) being rotatably connected to the support surface.

3. The pressing and dehydrating device for producing wood pulp offset paper according to claim 2, characterized in that: The drainage unit includes a water receiving box (9) arranged on the outside of the lower roller (1), the top of the water receiving box (9) is an open structure, the rotating shafts at both ends of the lower roller (1) pass through the outside of the end plate of the water receiving box (9), and are rotatably connected to the end plate of the water receiving box (9) through bearings, two water guide slopes (10) are symmetrically formed on both sides of the bottom end plate of the water receiving box (9), and the end where the two water guide slopes (10) contact is the high point, and a drainage port (11) is opened on the end plate of the water receiving box (9), and the bottom end of the inner wall of the drainage port (11) is aligned with the low point of the water guide slope (10); A support plate (14) connected to the ground is fixedly connected to the outside of the end plate of the water receiving box (9) and located above the drain outlet (11).

4. The pressing and dehydrating device for producing wood pulp offset paper according to claim 3, characterized in that: A water receiving blanket (12) is installed on the inner wall of the water receiving box (9) below the lower roller (1); the cross section of the water receiving blanket (12) is a "V"-shaped structure, and the water receiving blanket (12) is a hollow structure.

5. The pressing and dehydrating device for producing wood pulp offset paper according to claim 4, characterized in that: The inner wall of the water-receiving blanket (12) is vertically fixedly connected to a support rod (13), and there is a gap between adjacent support rods (13).

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