Hot-pressing composite drying device for producing wood pulp gridding paper
By adopting a hot press composite drying device in the wood pulp grid paper production process, rapid drying is achieved using high-temperature steam heating, which solves the problems of long drying time and high energy consumption in traditional ovens, and improves production efficiency and product quality.
Patent Information
- Application Number
- CN202421290643.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the existing wood pulp grid paper production process, traditional ovens have long drying time and high energy consumption, resulting in high production costs and reduced product quality.
The hot press composite drying device is adopted, including a composite press roller and a closed steam heating device, and rapid drying is achieved through high-temperature steam heating.
It improves the drying speed of wood pulp grid paper, reduces energy consumption, and improves product quality.
Smart Images
Figure CN222631952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wood pulp grid paper production and manufacturing, in particular to a hot pressing composite drying device for producing wood pulp grid paper. Background Art
[0002] Wood pulp grid paper is a cleaning product commonly used in industry for absorbing liquids, removing stains and wiping surfaces. Typical wood pulp grid paper is usually a three-layer composite structure, the middle layer is a sparse grid material layer made of fiber material (also known as sparse grid cloth), the bottom layer and the surface layer are wood pulp raw material paper, which is composited through a special process.
[0003] Wood pulp grid paper has a wide range of applications and usage scenarios. It can be used in mechanical processing, automobile manufacturing, electronic production, aviation and other industrial fields, and is often used in automobile maintenance and servicing, hospitals, laboratories and other places and the sanitation and cleaning of instruments and meters.
[0004] Wood pulp grid paper can form a specific wrinkle foaming effect through bidirectional shrinkage, enhance flexibility, comfort, high absorption and stretchability, and have the characteristics of high strength, strong absorption, safety and environmental protection, non-toxicity, and no linting. It can replace the rags currently used to maintain the safety of the production environment, products, and personnel. In addition, based on the good water absorption, chemical resistance, tensile strength, anti-static, not easy to break, no linting, and reusability of wood pulp grid paper, it is an important cleaning material for industrial applications, greatly improving cleaning efficiency and quality.
[0005] In the prior art, the preparation of wood pulp grid paper is made by a two-step forming process, which separates the preparation of the scrim and the compounding of the scrim with raw paper: the first step is to use a special scrim production line to make the scrim (or directly purchase the scrim), and the second step is to use a special compound production line to compound the scrim with raw paper. However, since there are few manufacturers in China that can produce high-quality scrim, in high-end application fields (such as medical paper for surgical operations), it is only possible to import scrim finished cloth that meets strict quality requirements from abroad at a high cost, resulting in a high production cost for high-end wood pulp grid paper. For this reason, our company has now specially developed a wood pulp grid paper production equipment that does not require the use of scrim finished cloth. The equipment adopts the online laying and forming technology of the loose grid material layer. The loose grid material layer is formed as the loose grid cloth by the online laying of the yarn weft and warp. The equipment also adopts the specially designed pressing and compounding roller to press and compound the upper and lower layers of raw paper and the loose grid material layer coated with glue in the middle layer. After drying, the wood pulp grid paper is formed.
[0006] The production process of the above-mentioned wood pulp grid paper involves the production process of pressing and laminating the upper and lower layers of raw paper and the loose grid material coated with glue in the middle layer and drying them. If the wood pulp grid paper is dried in a traditional oven, there are the disadvantages of long drying time and high energy consumption; in addition, the long drying time is likely to cause the quality of the final wood pulp grid paper to deteriorate. Utility Model Content
[0007] In order to solve the above problems, the utility model proposes a hot pressing composite drying device for producing wood pulp grid paper, which aims to increase the drying speed of wood pulp grid paper, reduce drying energy consumption, and improve the manufacturing quality of wood pulp grid paper. The specific technical solution is as follows:
[0008] A hot-pressing composite drying device for producing wood pulp grid paper comprises a pair of composite pressing rollers for hot-pressing and composite together upper and lower layers of raw paper and a middle layer of loose grid cloth, and a closed steam heating device arranged on one side of the wood pulp grid paper discharge end of the pair of composite pressing rollers, wherein the closed steam heating device comprises a closed steam box, a wood pulp grid paper inlet slit and a wood pulp grid paper outlet slit provided on the closed steam box along the moving path of the wood pulp grid paper, the wood pulp grid paper entering the closed steam box divides the internal space of the closed steam box into an upper steam chamber and a lower steam chamber, and steam supply pipes corresponding to the upper steam chamber and the lower steam chamber of the closed steam box are respectively arranged on the closed steam box.
[0009] In the utility model, the pair of composite pressing rollers comprises an upper composite pressing roller and a lower composite pressing roller; the outer box wall on the side of the wood pulp grid paper discharge end of the pair of composite pressing rollers on the closed steam box comprises an upper outer box wall at the entrance of the part above the entrance slit of the wood pulp grid paper and a lower outer box wall at the entrance of the part below the entrance slit of the wood pulp grid paper, wherein the shape of the upper outer box wall at the entrance is adapted to the outer circular shape of the upper composite pressing roller, and the shape of the lower outer box wall at the entrance is adapted to the outer circular shape of the lower composite pressing roller.
[0010] Preferably, a pair of outlet guide rollers arranged in the up-down direction for guiding the moving direction of the wood pulp grid paper are provided on the closed steam box near the wood pulp grid paper outlet slit, and the wood pulp grid paper is led out from between the pair of outlet guide rollers after coming out of the wood pulp grid paper outlet slit; a rubber plate is provided on the outer box wall of the closed steam box on one side of the wood pulp grid paper outlet slit, and the pair of outlet guide rollers are respectively abutted against the rubber plates.
[0011] Preferably, pressure roller stop tongues extending toward the pressing position of the pair of composite pressure rollers are respectively arranged on the outer box walls on the front and rear sides of the closed steam box near the entrance slit of the wood pulp grid paper, and the shapes of the extending ends of the pressure roller stop tongues are respectively adapted to the outer circular shapes of the pair of composite pressure rollers.
[0012] Preferably, guide roller tongues extending toward the pressing position of the pair of outlet guide rollers are respectively provided on the outer box walls on the front and rear sides of the closed steam box near the wood pulp grid paper outlet slit, and the shapes of the extending ends of the guide roller tongues are respectively adapted to the outer circular shapes of the pair of outlet guide rollers.
[0013] The arrangement of the pressure roller tongue and the guide roller tongue on the closed steam box can effectively improve the sealing performance of the steam, thereby reducing the loss of steam and ensuring the high-temperature heating effect of the steam.
[0014] Preferably, a pair of strip sealing blocks with L-shaped cross-sections are fixed to the outer box walls on the upper and lower sides of the closed steam box respectively, and the pair of strip sealing blocks are respectively in contact with the outer circles of the roller surfaces of the pair of composite pressure rollers along the axial direction of the composite pressure rollers.
[0015] As a further improvement of the present invention, an open steam heating device is further provided on one side of the wood pulp grid paper discharge end of the pair of outlet guide rollers, and the open steam heating device includes a pair of steam heating boxes arranged in the up and down directions. The wood pulp grid paper is led out from between the pair of outlet guide rollers and enters between the pair of steam heating boxes. The pair of steam heating boxes are densely provided with steam spray holes on one side facing the wood pulp grid paper, and the internal steam chambers of the pair of steam heating boxes are respectively connected to the steam supply pipes.
[0016] In the utility model, the wood pulp grid paper is led out from between the steam heating boxes and enters the paper storage area, and then the wood pulp grid paper is rolled up by a rolling device.
[0017] As a further improvement of the present invention, the paper storage area is an open paper storage area, and a transverse cross-flow wind generator for enhancing the drying effect of the wood pulp grid paper is arranged on the open paper storage area. The transverse cross-flow wind generator includes a front ventilation hood and a rear ventilation hood respectively arranged at the front and rear sides of the open paper storage area for accelerating the ventilation of the wood pulp grid paper along the front and rear directions, and a number of air supply fans for supplying air to the paper storage area are arranged in an array on the cover of the front ventilation hood, and a number of exhaust fans for exhausting air from the paper storage area are arranged in an array on the cover of the rear ventilation hood.
[0018] The above-mentioned transverse cross-flow wind generator makes full use of the space of the open paper storage area. While meeting the buffering needs of the wood pulp grid paper winding, relying on the serpentine arrangement and zigzag advance characteristics of the wood pulp grid paper in the paper storage area, the generated high-speed transverse cross-flow wind can fully contact the wood pulp grid paper and take away its internal moisture, thereby further improving the drying effect.
[0019] In the utility model, the composite pressing roller is a hot pressing roller with a built-in heating device.
[0020] The beneficial effects of the utility model are:
[0021] First, the utility model is a hot pressing composite drying device for producing wood pulp grid paper, which is provided with a closed steam heating device. The closed steam heating device is used to achieve high-temperature heating of the wood pulp grid paper after compounding. The wood pulp grid paper that obtains high-temperature heat can quickly evaporate the internal moisture after being exposed to the air, thereby achieving the effect of rapid drying. The centralized heating of high-temperature steam has high energy utilization rate and can effectively reduce energy consumption. In addition, the high-temperature steam heating time is short and will not damage the wood pulp grid paper, thereby improving the manufacturing quality of the wood pulp grid paper.
[0022] Secondly, the utility model is a hot pressing composite drying device for producing wood pulp grid paper. The closed steam heating device is close to the composite pressing roller and can also heat the composite pressing roller, which is beneficial to improve the composite effect of wood pulp grid paper.
[0023] Third, the utility model is a hot-pressing composite drying device for producing wood pulp grid paper, which can further increase the internal moisture dissipation rate of the wood pulp grid paper through the synergistic effect of the closed steam heating device and the open steam heating device, thereby improving the drying effect of the wood pulp grid paper.
[0024] Fourthly, in the hot-pressing composite drying device for producing wood pulp grid paper of the utility model, the arrangement of a transverse crossflow wind generator on the open paper storage area further improves the drying effect of the wood pulp grid paper. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic structural diagram of a hot pressing composite drying device for producing wood pulp grid paper according to the utility model;
[0026] Figure 2 yes Figure 1 A partial enlarged view of
[0027] Figure 3 yes Figure 1 A top view of the paper storage area.
[0028] In the figure: 51, composite pressing roller, 52, closed steam heating device, 53, closed steam box, 54, wood pulp grid paper inlet slit, 55, wood pulp grid paper outlet slit, 56, upper steam chamber, 57, lower steam chamber, 58, upper composite pressing roller, 59, lower composite pressing roller, 60, outlet guide roller, 61, rubber plate, 62, pressing roller tongue, 63, guide roller tongue, 64, strip sealing block, 65, open steam heating device, 66, steam heating box, 67, steam spray hole, 68, internal steam chamber, 69, paper storage area, 70, winding device, 71, front ventilation hood, 72, rear ventilation hood, 73, blower, 74, exhaust fan, 75, transverse crossflow wind generator, 76, wood pulp grid paper. DETAILED DESCRIPTION
[0029] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.
[0030] like Figures 1 to 3 The figure shows an embodiment of a hot pressing composite drying device for producing wood pulp grid paper of the utility model, comprising a pair of composite pressing rollers 51 for hot pressing and composite together upper and lower layers of raw paper and a middle layer of loose grid cloth, and a closed steam heating device 52 arranged on the side of the wood pulp grid paper discharge end of the pair of composite pressing rollers 51, the closed steam heating device 52 comprising a closed steam box 53, a wood pulp grid paper inlet slit 54 and a wood pulp grid paper outlet slit 55 provided on the closed steam box 53 along the moving path of the wood pulp grid paper 76, the wood pulp grid paper 76 entering the closed steam box 53 divides the internal space of the closed steam box 53 into an upper steam chamber 56 and a lower steam chamber 57, and steam supply pipes (not shown in the figure) corresponding to the upper steam chamber 56 and the lower steam chamber 57 of the closed steam box 53 are respectively arranged on the closed steam box 53.
[0031] In this embodiment, the pair of composite pressing rollers 51 include an upper composite pressing roller 58 and a lower composite pressing roller 59; the outer box wall on the side of the wood pulp grid paper discharge end of the pair of composite pressing rollers 51 on the closed steam box 53 includes an upper outer box wall at the entrance of the part above the wood pulp grid paper entrance slit 54 and a lower outer box wall at the entrance of the part below the wood pulp grid paper entrance slit 54, wherein the shape of the upper outer box wall at the entrance is adapted to the outer circular shape of the upper composite pressing roller 58, and the shape of the lower outer box wall at the entrance is adapted to the outer circular shape of the lower composite pressing roller 59.
[0032] Preferably, a pair of outlet guide rollers 60 arranged in the up-down direction for guiding the moving direction of the wood pulp grid paper 76 are provided on the closed steam box 53 near the wood pulp grid paper outlet slit 55, and the wood pulp grid paper 76 is led out from between the pair of outlet guide rollers 60 after coming out of the wood pulp grid paper outlet slit 55; a rubber plate 61 is provided on the outer box wall of the closed steam box 53 near the wood pulp grid paper outlet slit 55, and the pair of outlet guide rollers 60 are respectively abutted against the rubber plate 61.
[0033] Preferably, roller stop tongues 62 extending toward the pressing position of the pair of composite rollers 51 are respectively provided on the outer box walls on the front and rear sides of the closed steam box 53 near the wood pulp grid paper inlet slit 54, and the shapes of the extending ends of the roller stop tongues 62 are respectively adapted to the outer circular shapes of the pair of composite rollers 51.
[0034] Preferably, guide roller tongues 63 extending toward the pressing part of the pair of outlet guide rollers 60 are respectively provided on the outer box walls on the front and rear sides of the closed steam box 53 near the wood pulp grid paper outlet slit 55, and the shapes of the extending ends of the guide roller tongues 63 are respectively adapted to the outer circular shapes of the pair of outlet guide rollers 63.
[0035] The arrangement of the pressure roller tongue 62 and the guide roller tongue 63 on the closed steam box 53 can effectively improve the sealing performance of the steam, thereby reducing the loss of steam and ensuring the high-temperature heating effect of the steam.
[0036] Preferably, a pair of strip sealing blocks 64 with an L-shaped cross-section are respectively fixed to the outer box walls on the upper and lower sides of the closed steam box 53, and the pair of strip sealing blocks 64 are respectively in contact with the outer circle of the roller surface of the pair of composite pressure rollers 51 along the axial direction of the composite pressure roller 51.
[0037] As a further improvement of the present embodiment, an open steam heating device 65 is further provided on one side of the wood pulp grid paper discharge end of the pair of outlet guide rollers 60, and the open steam heating device 65 includes a pair of steam heating boxes 66 arranged in the up and down directions. The wood pulp grid paper 76 is led out from between the pair of outlet guide rollers 60 and enters between the pair of steam heating boxes 66. The pair of steam heating boxes 66 are densely covered with steam spray holes 67 on one side facing the wood pulp grid paper 76, and the internal steam chambers 68 of the pair of steam heating boxes 66 are respectively connected to the steam supply pipes (not shown in the figure).
[0038] In this embodiment, the wood pulp grid paper 76 is drawn out from between the steam heating boxes 66 and enters the paper storage area 69 , and then the wood pulp grid paper 76 is rolled up by the rolling device 70 .
[0039] As a further improvement of the present embodiment, the paper storage area 69 is an open paper storage area, and a transverse cross-flow wind generator 75 for enhancing the drying effect of the wood pulp grid paper is arranged on the open paper storage area 69. The transverse cross-flow wind generator 75 includes a front ventilation hood 71 and a rear ventilation hood 72 respectively arranged at the front and rear sides of the open paper storage area 69 for accelerating the ventilation of the wood pulp grid paper 76 along the front and rear directions, and a plurality of blowers 73 for supplying air to the paper storage area 69 are arranged in an array on the cover of the front ventilation hood 71, and a plurality of exhaust fans 74 for exhausting air from the paper storage area 69 are arranged in an array on the cover of the rear ventilation hood 72.
[0040] The above-mentioned transverse cross-flow wind generator 75 makes full use of the space of the open paper storage area 69. While meeting the buffering requirements of the wood pulp grid paper winding, relying on the serpentine arrangement and zigzag advance characteristics of the wood pulp grid paper on the paper storage area 69, the generated high-speed transverse cross-flow wind can fully contact the wood pulp grid paper 76 and take away its internal moisture, thereby further improving the drying effect.
[0041] In this embodiment, the composite pressing roller 51 is a hot pressing roller with a built-in heating device.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A hot pressing composite drying device for producing wood pulp grid paper, characterized in that: It includes a pair of composite pressing rollers for hot-pressing and laminating the upper and lower layers of raw paper and the middle layer of loose mesh cloth, and a closed steam heating device arranged on the side of the wood pulp mesh paper discharge end of the pair of composite pressing rollers. The closed steam heating device includes a closed steam box, a wood pulp mesh paper inlet slit and a wood pulp mesh paper outlet slit arranged on the closed steam box along the moving path of the wood pulp mesh paper. The wood pulp mesh paper entering the closed steam box divides the internal space of the closed steam box into an upper steam chamber and a lower steam chamber. The closed steam box is respectively provided with steam supply pipes corresponding to the upper steam chamber and the lower steam chamber of the closed steam box.
2. The hot pressing composite drying device for producing wood pulp grid paper according to claim 1, characterized in that: The pair of composite pressing rollers include an upper composite pressing roller and a lower composite pressing roller; the outer box wall on the side of the wood pulp grid paper discharge end of the pair of composite pressing rollers on the closed steam box includes an upper outer box wall at the entrance of the part above the entrance slit of the wood pulp grid paper and a lower outer box wall at the entrance of the part below the entrance slit of the wood pulp grid paper, wherein the shape of the upper outer box wall at the entrance is adapted to the outer circular shape of the upper composite pressing roller, and the shape of the lower outer box wall at the entrance is adapted to the outer circular shape of the lower composite pressing roller.
3. The hot pressing composite drying device for producing wood pulp grid paper according to claim 1, characterized in that: A pair of outlet guide rollers arranged in the up-down direction for guiding the moving direction of the wood pulp grid paper are also provided on the closed steam box near the wood pulp grid paper outlet slit. The wood pulp grid paper comes out from the wood pulp grid paper outlet slit and then leads out from between the pair of outlet guide rollers. A rubber plate is provided on the outer box wall of the closed steam box near the wood pulp grid paper outlet slit, and the pair of outlet guide rollers are respectively abutted against the rubber plates.
4. The hot pressing composite drying device for producing wood pulp grid paper according to claim 1, characterized in that: On the outer box walls on the front and rear sides of the closed steam box, there are respectively arranged pressure roller stop tongues extending toward the pressing position of the pair of composite pressure rollers at the positions close to the wood pulp grid paper inlet slits, and the shapes of the extending ends of the pressure roller stop tongues are respectively adapted to the outer circular shapes of the pair of composite pressure rollers.
5. The hot pressing composite drying device for producing wood pulp grid paper according to claim 3, characterized in that: Guide roller stop tongues extending toward the pressing position of the pair of outlet guide rollers are respectively arranged on the outer box walls on the front and rear sides of the closed steam box near the wood pulp grid paper outlet slit, and the shapes of the extending ends of the guide roller stop tongues are respectively adapted to the outer circular shapes of the pair of outlet guide rollers.
6. The hot pressing composite drying device for producing wood pulp grid paper according to claim 1, characterized in that: A pair of strip sealing blocks with L-shaped cross-sections are fixed to the outer box walls on the upper and lower sides of the closed steam box respectively. The pair of strip sealing blocks are respectively in contact with the outer circles of the roller surfaces of the pair of composite pressing rollers along the axial direction of the composite pressing rollers.
7. The hot pressing composite drying device for producing wood pulp grid paper according to claim 3, characterized in that: An open steam heating device is also provided on one side of the pulp grid paper discharge end of the pair of outlet guide rollers, and the open steam heating device includes a pair of steam heating boxes arranged in the up and down directions. The wood pulp grid paper is led out from between the pair of outlet guide rollers and enters between the pair of steam heating boxes. The pair of steam heating boxes are densely provided with steam spray holes on one side facing the wood pulp grid paper, and the internal steam chambers of the pair of steam heating boxes are respectively connected to the steam supply pipes.
8. The hot pressing composite drying device for producing wood pulp grid paper according to claim 7, characterized in that: The wood pulp grid paper is led out from between the steam heating boxes and enters the paper storage area, and then the wood pulp grid paper is rolled up by a rolling device.
9. The hot pressing composite drying device for producing wood pulp grid paper according to claim 8, characterized in that: The paper storage area is an open paper storage area, and a transverse cross-flow wind generator for enhancing the drying effect of the wood pulp grid paper is arranged on the open paper storage area. The transverse cross-flow wind generator includes a front ventilation hood and a rear ventilation hood respectively arranged at the front and rear sides of the open paper storage area for accelerating the ventilation of the wood pulp grid paper along the front and rear directions, and a number of air supply fans for supplying air to the paper storage area are arranged in an array on the cover of the front ventilation hood, and a number of exhaust fans for exhausting air from the paper storage area are arranged in an array on the cover of the rear ventilation hood.
10. The hot pressing composite drying device for producing wood pulp grid paper according to claim 1, characterized in that: The composite pressing roller is a hot pressing roller with a built-in heating device.