A forming paper machine with inclined wire

Abstract

The application discloses a kind of oblique net forming papermaking equipment, including rack;Weir plate is located in rack, along the first direction and forms weir area of extension;Forming oblique net is located in rack, by the side of butt joint weir plate to the side away from weir plate upwardly inclined;Slurry guardrail, from weir area to forming oblique net along the first direction and extends;Slurry guardrail includes first area and second area, first area is at least partially higher than the slurry liquid level of weir area or filter water forming area, and second area is at least partially lower than the slurry liquid level of weir area or filter water forming area, slurry is sent to forming oblique net in the process of extension from the front end of weir area along the first direction, part of slurry is sent along the first direction, part of slurry is overflowed from second area along the second direction, so that slurry continues to flow dynamically in the process of sending.The present application can avoid flocculation settlement in forming area when copying special materials prone to flocculation, high viscosity or large filter resistance, and improve the forming quality of paper.

Description

Technical Field

[0001] This invention relates to the field of inclined wire forming papermaking equipment, and in particular to an inclined wire forming papermaking device. Background Technology

[0002] Inclined wire formers are one of the commonly used wet forming equipment in the papermaking industry. Because their inclined wire surface can enhance gravity dewatering and make the fibers naturally oriented, they are particularly suitable for papermaking of long fibers, high basis weight and special filtration performance pulps. They occupy an important position in the production of specialty paper and high-performance fiber materials.

[0003] In actual production, it has been found that in the production of certain special papers (such as carbon fiber paper and glass fiber paper), the paper uniformity and physical strength properties of existing inclined wire forming paper machines do not meet the material requirements.

[0004] Chinese invention patent application CN202110468367.6 discloses a method for preparing carbon paper with a gradient pore structure. The method involves preparing carbon fibers with different aspect ratios into slurries, then sequentially laying them in a gradient manner according to their aspect ratio from high to low. The slurries are then formed using a skein-and-wire method to obtain a three-dimensional network structure carbon felt precursor. This precursor is then impregnated in a resin solution and subjected to hot pressing, carbonization, and graphitization to obtain the carbon paper. This method creates interconnected pores within the prepared carbon paper, with the pore size varying gradient along the thickness direction, which improves gas transport efficiency and effectively enhances the mass and heat transfer properties of the carbon paper. The carbon paper prepared by this method has the advantages of uniform thickness and pore structure, improving the tensile strength and reducing the resistivity of the paper.

[0005] Chinese invention patent application number CN201910369140.9 discloses a method for preparing basalt fiber paper. The method involves pretreating the basalt fiber slurry with alkali and acid treatments sequentially to improve fiber dispersibility. Then, a mixed dispersant of sodium hexametaphosphate and polyethylene oxide, along with organic binders such as sodium carboxymethyl cellulose and inorganic binders such as water glass, are added to enhance the inter-fiber bonding strength. This combined process significantly improves fiber uniformity and paper strength.

[0006] Chinese invention patent application number CN201320302888.5 discloses a structure for an inclined mesh forming device. The inclined mesh headbox is equipped with a multi-cavity square cone tube that is seamlessly connected to an orifice plate to achieve horizontal isobaric stratified slurry feeding. The forming box is composed of three parts and is equipped with a white water outlet and a flow guide baffle to adjust the dewatering rate in different zones. The stepped diffuser hole design of the orifice plate enhances turbulence and promotes uniform fiber distribution.

[0007] One method for preparing gradient-pore carbon paper optimizes the internal pore structure of the carbon paper by gradient-laying carbon fibers with different aspect ratios, improving thickness uniformity, tensile strength, and electrical conductivity, starting from the perspective of pulp ratio and layup process. Another method for preparing basalt fiber paper improves the dispersion uniformity and interfiber bonding force of basalt fibers by combining surface treatment agents, dispersants, and adhesives, thereby improving paper strength. A method for preparing inclined wire forming device achieves isobaric stratified pulp feeding and zoned dewatering through a multi-cavity square cone tube and perforated plate stepped diffusion design, thereby enhancing turbulence and promoting uniform fiber distribution. However, in actual production, it has been found that improvements in pulp ratio, additives, and equipment structure, when making paper from certain special materials, still fail to meet the requirements for paper uniformity and physical strength properties, resulting in persistent forming defects.

[0008] Therefore, it is urgent to research and develop a slanted wire forming papermaking equipment to solve the above-mentioned technical defects. Summary of the Invention

[0009] The purpose of this invention is to provide a wire mesh forming papermaking device that can improve the forming quality of paper using traditional equipment.

[0010] To achieve the above objectives, the present invention provides a slanted wire forming papermaking device, the specific implementation of which is as follows: A type of inclined wire forming papermaking equipment, comprising: frame; A weir plate, disposed on the frame, extends along a first direction to form a weir area, used to receive slurry and transport slurry along the first direction; A forming inclined screen, disposed on the frame, is located downstream of the weir flow area along the first direction, and slopes upward from the side connected to the weir flow plate towards the side away from the weir flow plate, forming a water-filtering forming area for receiving slurry and filtering and forming it; and The slurry guardrail extends from the weir flow area to the formed inclined net along the first direction. The slurry guardrail is located on both sides of the first direction and is set opposite to each other in the second direction with the first direction as a reference. The slurry guardrail includes a first region and a second region, wherein the first region is at least partially higher than the slurry level of the weir flow region or the filtration and forming region, and the second region is at least partially lower than the slurry level of the weir flow region or the filtration and forming region. During the process of conveying the slurry from the front end of the weir flow area to the filter forming area along the first direction, part of the slurry is conveyed to the forming inclined screen filter forming along the first direction, and part of the slurry overflows from the second area along the second direction, so that the slurry continues to flow dynamically during the conveying process and part of it overflows from the second area.

[0011] This invention discloses a tilted wire forming papermaking device. Compared with the prior art, it sets a first region and a second region on the pulp guardrail. The first region is at least partially higher than the pulp liquid level in the weir region or the filtration forming region, which is used to prevent the pulp from flowing out from the side of the forming tilted wire and maintain the liquid level in the forming area. At the same time, the second region is at least partially lower than the pulp liquid level in the weir region or the filtration forming region, which provides a channel for the pulp in the filtration forming region to be discharged outward. During the process of the pulp being transported from the front end of the weir region to the forming tilted wire in the first direction, part of the pulp is transported to the forming tilted wire for filtration forming in the first direction, and part of the pulp overflows from the second region in the second direction. This makes the pulp continuously and dynamically flowing during the transportation process, and part of it overflows from the second region. Even if the supply speed is greater than the filtration speed, the excess pulp can overflow from the second region in the second direction, so that the pulp on the forming tilted wire is always in a state of flow and renewal, and will not cause fiber flocculation and sedimentation due to long-term retention. This fundamentally solves the problem of paper web forming defects caused by pulp retention and improves paper web uniformity and physical properties. Meanwhile, since the overflow occurs in the second zone, and the upper edge of the first zone remains above the pulp surface, the guardrail as a whole maintains its main restraining effect on the pulp. Controllable dynamic discharge is only achieved in localized areas through the second zone, addressing forming defects while simultaneously considering fiber utilization, conveying efficiency, and conveying volume. By incorporating a pulp guardrail in the second zone into the existing inclined wire forming equipment, the pulp on the forming inclined surface is constantly in a state of dynamic overflow and renewal, thus eliminating fiber flocculation and sedimentation in the pulp and improving the uniformity and physical strength of the paper forming.

[0012] In some embodiments, the thickness direction of the slurry accumulated in the weir flow area or the filtration forming area is the third direction, the second area is an overflow hole opened on the slurry guardrail, the overflow hole penetrates the slurry guardrail along the second direction, and the lowest point of the overflow hole is lower than the slurry liquid surface in the third direction.

[0013] By setting the second region as an overflow hole penetrating the slurry guardrail along the second direction, and ensuring that the lowest point of the overflow hole is lower than the slurry surface in the third direction, the slurry overflows outward through the overflow hole below the liquid surface. The overflow hole has a simple structure, is easy to manufacture, and allows for flexible control of the overflow flow rate by adjusting the hole diameter and the number of holes, adapting to the needs of different slurries and process conditions.

[0014] In some embodiments, the thickness direction of the slurry accumulated in the weir flow area or the filtration forming area is the third direction, the second area is an overflow channel opened on the slurry guardrail, the overflow channel extends along the first direction and / or the third direction and penetrates the slurry guardrail in the second direction, and the lowest point of the overflow channel is lower than the slurry liquid surface in the third direction.

[0015] By configuring the second region as an overflow channel extending along the first direction and penetrating the slurry guardrail in the second direction, and ensuring that the lowest point of the overflow channel is lower than the slurry surface in the third direction, slurry overflows outward through the overflow channel in the second direction. Compared to overflow holes, the overflow channel provides a strip-shaped overflow channel extending along the first or third direction, with a larger overflow area. This allows for more stable overflow capacity when the slurry supply rate fluctuates significantly, preventing overflow obstruction due to excessive instantaneous flow.

[0016] In some embodiments, the thickness direction of the slurry accumulated in the weir flow area or the filtration forming area is the third direction, the second area is an overflow gap opened on the slurry guardrail, the overflow gap extends downward at an angle along the first direction and penetrates the slurry guardrail along the second direction, and the lowest point of the overflow gap is lower than the slurry liquid surface in the third direction.

[0017] By setting the second region to extend downwards at an angle along the first direction and penetrate the overflow gap of the slurry guardrail along the second direction, and ensuring that the lowest point of the overflow gap is lower than the slurry surface at a third direction, slurry overflows outwards through the overflow gap. The overflow gap opens downwards from the upper edge of the slurry guardrail, resulting in the simplest structure and facilitating direct modification and processing of existing slurry guardrails, thus reducing equipment manufacturing costs and modification difficulty.

[0018] In some embodiments, the frame is provided with an overflow baffle located outside the slurry guardrail in a second direction, and the overflow baffle and the slurry guardrail are spaced apart in the second direction to form a collection space extending in a first direction for collecting slurry overflowing from the second area.

[0019] By installing an overflow baffle on the frame and spacing the overflow baffle and the slurry guardrail in the second direction, a collection space extending in the first direction is formed. This allows the slurry overflowing from the second area to be collected in the collection space, preventing the slurry from flowing randomly and polluting the equipment or production environment. At the same time, it provides a structural basis for the subsequent recycling of the overflow slurry, taking into account both process efficiency and on-site cleanliness.

[0020] In some embodiments, the collection space is provided with a drain hole for discharging the collected slurry from the collection space.

[0021] By setting drainage holes in the collection space, the overflow pulp collected in the collection space is discharged in an orderly manner, which facilitates the pulp to flow back to the pulp supply system for recycling through pipelines. This reduces fiber waste and wastewater treatment load, and improves paper web forming quality while taking into account economic benefits.

[0022] In some embodiments, the collection space is provided with a guide ramp that extends along a first direction and slopes downward toward the drain hole, and the guide ramp has a gradually decreasing height difference in a third direction to guide the slurry into the drain hole.

[0023] By setting a guide ramp in the collection space and extending the guide ramp along the first direction and tilting downward toward the drain hole, the guide ramp has a gradually decreasing height difference in the third direction, so that the slurry automatically flows to the drain hole under the action of gravity, avoiding the slurry residue or accumulation in the collection space, thereby improving the slurry recovery efficiency and the cleanliness of the collection space.

[0024] In some embodiments, the slurry guardrails are located on both sides of the weir flow area or the filtration forming area along a first direction, and each slurry guardrail is provided with the first area and the second area.

[0025] By setting the slurry guardrails on both sides of the weir flow area or the filter forming area along the second direction, and setting a first area and a second area on each slurry guardrail, synchronous overflow on both sides is achieved, so that the slurry on the forming inclined wire is uniformly renewed in the width direction, which further improves the lateral uniformity of paper web forming.

[0026] Based on the above technical solution, the present invention has the following beneficial effects compared with the prior art: By setting a first region and a second region on the pulp guardrail, the first region is at least partially higher than the pulp surface in the weir flow region or the filtration and forming region, which is used to prevent the pulp from flowing out from the side of the forming inclined wire and maintain the liquid level in the forming area; at the same time, the second region is at least partially lower than the pulp surface in the weir flow region or the filtration and forming region, providing a channel for the pulp on the forming inclined wire to be discharged outward. During the process of the pulp being transported from the front end of the weir flow region to the forming inclined wire in the first direction, part of the pulp is transported to the forming inclined wire for filtration and forming in the first direction, and part of the pulp overflows from the second region in the second direction. This makes the pulp continuously and dynamically flow during the transport process and partially overflow from the second region. Even if the supply speed is greater than the filtration speed, the excess pulp can overflow from the second region in the second direction, so that the pulp on the forming inclined wire is always in a state of flow and renewal, and will not cause fiber flocculation and sedimentation due to long-term retention. This fundamentally solves the problem of paper web forming defects caused by pulp retention and improves paper web uniformity and physical properties. Meanwhile, since the overflow occurs in the second zone, and the upper edge of the first zone remains above the pulp surface, the guardrail as a whole maintains its main restraining effect on the pulp. Controllable dynamic discharge is only achieved in localized areas through the second zone, addressing forming defects while simultaneously considering fiber utilization, conveying efficiency, and conveying volume. By incorporating a pulp guardrail in the second zone into the existing inclined wire forming equipment, the pulp on the forming inclined surface is constantly in a state of dynamic overflow and renewal, thus eliminating fiber flocculation and sedimentation in the pulp and improving the uniformity and physical strength of the paper forming. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the structure of the second region of the present invention being an overflow hole; Figure 4 This is a schematic diagram of the structure of the second region of the present invention, which is an overflow channel; Figure 5 This is a schematic diagram of the structure of the second region of the present invention, which is an overflow gap.

[0028] Explanation of reference numerals in the attached figures: 100. Frame; 110. Weir area; 111. Weir plate; 120. Filter forming area; 121. Forming inclined screen; 130. Slurry guardrail; 131. First area; 132. Second area; 140. Overflow baffle; 150. Collection space; 151. Guide slope. Detailed Implementation

[0029] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0030] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0031] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0032] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0033] like Figure 1-2 As shown, this embodiment provides a slanted wire forming papermaking device, including a frame 100, on which a weir plate 111 is provided. The weir plate 111 extends along a first direction to form a weir region 110, which is used to receive and transport pulp.

[0034] Specifically, the weir region 110 is formed by utilizing the space between the weir plate 111 and the frame 100.

[0035] A forming inclined mesh 121 is provided on the frame 100. The forming inclined mesh 121 is located downstream of the weir flow area 110. The forming inclined mesh 121 is inclined upward from the side close to the weir flow plate 111 to the side away from the weir flow plate 111 to form a water-filtering forming area 120 for receiving slurry and filtering and forming it.

[0036] Specifically, the first direction is the slurry running direction between the weir flow area 110 and the filtration and forming area 120.

[0037] A slurry guardrail 130 is provided on the frame 100. The slurry guardrail 130 extends from the weir flow area 110 to the forming inclined net 121 along the first direction. The slurry guardrail 130 is located on both sides of the first direction and is set opposite to each other in the second direction with the first direction as a reference.

[0038] The slurry guardrail 130 includes a first region 131 and a second region 132. The first region 131 is at least partially higher than the slurry surface of the weir region 110 or the filtration and forming region 120, and the second region 132 is at least partially lower than the slurry surface of the weir region 110 or the filtration and forming region 120.

[0039] Furthermore, during the process of conveying the pulp from the front end of the weir region 110 to the forming inclined wire 121 along the first direction, part of the pulp is conveyed along the first direction, and part of the pulp overflows from the second region 132 along the second direction. By utilizing the overflow of the pulp from the second region 132 along the second direction, the pulp on the forming inclined wire 121 is always in a state of flow and renewal, and fiber flocculation and sedimentation will not occur due to long-term retention. This fundamentally solves the problem of paper web forming defects caused by pulp retention, and improves paper web uniformity and physical strength.

[0040] Specifically, the second direction is the direction in which the slurry guardrail 130 is set relative to the first direction. The thickness direction of the slurry accumulated in the weir flow area 110 or the filtration forming area 120 is the third direction. The deeper the weir flow area 110 or the filtration forming area 120 is in the third direction, the thicker the slurry accumulation.

[0041] like Figure 3 As shown, optionally, the second region 132 is an overflow hole, which is formed on the slurry guardrail 130. The overflow hole penetrates the slurry guardrail 130 along the second direction, and the lowest point of the overflow hole is lower than the slurry liquid surface in the third direction. The structure is simple, easy to process, and the overflow flow rate can be flexibly controlled by the hole diameter and the number of holes, adapting to the needs of different slurries and process conditions.

[0042] like Figure 4 As shown, optionally, the second region 132 is an overflow channel, formed on the slurry guardrail 130. The overflow channel extends along a first direction and / or a third direction and penetrates the slurry guardrail 130 in a second direction, and the lowest point of the overflow channel is lower than the slurry surface in the third direction. Compared to an overflow hole, the overflow channel provides a strip-shaped overflow channel extending along the first direction or a third direction, with a larger overflow area, which can provide a more stable overflow capacity when the slurry supply rate fluctuates greatly, avoiding overflow obstruction due to excessive instantaneous flow.

[0043] like Figure 5 As shown, optionally, the second region 132 is an overflow notch, formed on the slurry guardrail 130. The overflow notch extends downward at an angle along a first direction and penetrates the slurry guardrail 130 along a second direction, with the lowest point of the overflow notch being lower than the slurry surface in a third direction. Forming the overflow notch downward from the upper edge of the slurry guardrail 130 results in the simplest structure, facilitating direct modification and processing of existing slurry guardrails 130, thus reducing equipment manufacturing costs and modification difficulty.

[0044] In order to prevent the overflow of slurry from affecting the environment outside the equipment, an overflow baffle 140 is provided on the frame 100. The overflow baffle 140 is located on the outside of the slurry guardrail 130 along the second direction. The overflow baffle 140 and the slurry guardrail 130 are spaced apart in the second direction to form a collection space 150 extending along the first direction, which is used to collect the slurry overflowing from the second area 132. This prevents the slurry from flowing randomly and polluting the equipment or production environment. At the same time, it provides a structural basis for the subsequent recycling of overflow slurry, taking into account both process effect and on-site cleanliness.

[0045] Furthermore, the collection space 150 is provided with a drainage hole to discharge the collected pulp from the collection space 150 and to orderly discharge the overflow pulp collected in the collection space 150, so that the pulp can be returned to the pulp supply system for recycling through the pipeline, thereby reducing fiber waste and wastewater treatment load, and improving the paper web forming quality while taking into account economic benefits.

[0046] Furthermore, the collection space 150 is provided with a guide slope 151, which extends along a first direction and slopes downward toward the drain hole. The guide slope 151 has a height difference in a third direction to guide the slurry into the drain hole, thereby improving the discharge efficiency and accuracy of the slurry and preventing the slurry from remaining or accumulating in the collection space 150, thus improving the slurry recovery efficiency and the cleanliness of the collection space 150.

[0047] The slurry guardrails 130 are located on both sides of the weir flow area 110 or the filtration and forming area 120 along the first direction. Each slurry guardrail 130 is provided with a first area 131 and a second area 132, realizing simultaneous overflow from both sides. This ensures that the slurry on the forming wire 121 is uniformly renewed in the width direction, further improving the lateral uniformity of paper web forming. In actual use, either single-sided overflow or double-sided overflow can be used.

[0048] It is important to note that a deeply ingrained technical perception has long existed in this field: during the operation of inclined wire mesh forming equipment, slurry overflowing the guardrails on both sides of the forming mesh is considered a major equipment failure resulting in fiber loss and increased wastewater load, a process out-of-control state that must be strictly avoided. Based on this perception, "preventing slurry from overflowing the guardrails" is regarded as the core principle of inclined wire mesh forming process control. Any solution that might cause slurry overflow is considered a process regression and is not technically acceptable by those skilled in the art.

[0049] For example, in a non-contact sealing device for a wire forming machine disclosed in application number 201910304155.7, the sealing structures between the left side of the headbox and the wire section, the right side of the headbox and the wire section, and the lower lip plate of the headbox and the wire section are described. If the seal is not good, the pulp will spray out from the corresponding part of the headbox. Therefore, these sealing structures play a crucial role in the normal production of the wire forming machine and the paper surface quality. Similarly, in a slurry-blocking device for use with an insulating paperboard machine disclosed in application number 200920239950.4, the slurry-blocking plate can block the pulp when it is evenly sprayed onto the forming wire and transported, preventing the pulp from flowing to both sides of the forming wire and causing uneven pulp thickness. A water spraying device sprays water into the gap between the slurry-blocking plate and the forming wire, ensuring the straightness of the formed paper edge and preventing the slurry-blocking plate from scratching the edge of the formed paper and affecting the papermaking quality.

[0050] Therefore, it is evident that blocking the overflow of pulp with a pulp guardrail 130 is a necessary technical means to prevent major process accidents such as fiber loss and increased wastewater load. Those skilled in the art would not realize that the paper web forming defects caused by fiber flocculation and sedimentation are due to the height of the guardrail blocking the overflow of pulp.

[0051] The inclined wire forming papermaking equipment provided in this embodiment, compared with the prior art, sets a first region 131 and a second region 132 on the pulp guardrail 130. The first region 131 is at least partially higher than the pulp liquid level of the weir region 110 or the filtration forming region 120, which is used to prevent the pulp from flowing out from the side of the forming inclined wire 121 and maintain the liquid level in the forming area; at the same time, the second region 132 is at least partially lower than the pulp liquid level of the weir region 110 or the filtration forming region 120, which provides a channel for the pulp in the filtration forming region 120 to be discharged outward. The pulp is transported from the front end of the weir region 110 to the forming area along the first direction. During the forming process of the inclined wire 121, part of the pulp is conveyed along the first direction to the forming inclined wire 121 for filtration and forming, while part of the pulp overflows from the second region 132 along the second direction. This ensures that the pulp continues to flow dynamically during the conveying process. Even when the supply speed is greater than the filtration speed, excess pulp can still overflow from the second region 132 along the second direction, keeping the pulp on the forming inclined wire 121 in a constant state of flow and renewal. This prevents fiber flocculation and sedimentation due to prolonged retention, fundamentally solving the paper web forming defects caused by pulp retention and improving paper web uniformity and physical properties. Simultaneously, because the overflow occurs in the second region 132, the upper edge of the first region 131 remains above the pulp surface. The guardrail maintains its overall constraint on the pulp, allowing for controlled dynamic discharge only in localized areas through the second region 132. This addresses forming defects while also considering fiber utilization, conveying efficiency, and conveying volume. By using the pulp guardrail 130 in the second area 132 of the original inclined wire forming equipment, the pulp on the forming inclined surface 121 is always in a dynamic overflow and renewal state, which can eliminate the fiber flocculation and sedimentation in the pulp and improve the uniformity and physical strength of paper forming.

[0052] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A type of inclined wire forming papermaking equipment, characterized in that, include: Rack (100); A weir plate (111) is provided on the frame (100) and extends along the first direction to form a weir area (110) for receiving slurry and conveying slurry along the first direction; A forming inclined mesh (121), disposed on the frame (100), is located downstream of the weir flow area (110) along the first direction, and slopes upward from the side connected to the weir flow plate (111) towards the side away from the weir flow plate (111), forming a water-filtering forming area (120) for receiving slurry and filtering and forming it; and The slurry guardrail (130) extends from the weir area (110) to the shaped inclined net (121) along the first direction. The slurry guardrail (130) is located on both sides of the first direction and is set opposite to each other in the second direction with the first direction as a reference. The slurry guardrail (130) includes a first region (131) and a second region (132), wherein the first region (131) is at least partially higher than the slurry level of the weir flow region (110) or the filtration and forming region (120), and the second region (132) is at least partially lower than the slurry level of the weir flow region (110) or the filtration and forming region (120). During the process of conveying the slurry from the front end of the weir flow area (110) to the filter forming area (120) along the first direction, part of the slurry is conveyed to the forming inclined mesh (121) for filter forming along the first direction, and part of the slurry overflows from the second area (132) along the second direction, so that the slurry continues to flow dynamically during the conveying process and part of it overflows from the second area (132).

2. The inclined wire forming papermaking equipment as described in claim 1, characterized in that, The thickness direction of the slurry accumulated in the weir flow area (110) or the filter forming area (120) is the third direction. The second area (132) is an overflow hole opened on the slurry guardrail (130). The overflow hole penetrates the slurry guardrail (130) along the second direction, and the lowest point of the overflow hole is lower than the slurry liquid surface in the third direction.

3. The inclined wire forming papermaking equipment as described in claim 1, characterized in that, The thickness direction of the slurry accumulated in the weir flow area (110) or the filter forming area (120) is the third direction. The second area (132) is an overflow channel opened on the slurry guardrail (130). The overflow channel extends along the first direction and / or the third direction and penetrates the slurry guardrail (130) in the second direction. The lowest point of the overflow channel is lower than the slurry liquid surface in the third direction.

4. The inclined wire forming papermaking equipment as described in claim 1, characterized in that, The thickness direction of the slurry accumulated in the weir flow area (110) or the filter forming area (120) is the third direction. The second area (132) is an overflow gap opened on the slurry guardrail (130). The overflow gap extends downward at an angle along the first direction and penetrates the slurry guardrail (130) along the second direction. The lowest point of the overflow gap is lower than the slurry liquid surface in the third direction.

5. The inclined wire forming papermaking equipment as described in any one of claims 2-4, characterized in that, The frame (100) is provided with an overflow baffle (140), which is located on the outside of the slurry guardrail (130) along the second direction. The overflow baffle (140) and the slurry guardrail (130) are spaced apart in the second direction to form a collection space (150) extending along the first direction for collecting the slurry overflowing from the second area (132).

6. The inclined wire forming papermaking equipment as described in claim 5, characterized in that, The collection space (150) is provided with a drainage hole for discharging the collected slurry from the collection space (150).

7. The inclined wire forming papermaking equipment as described in claim 6, characterized in that, The collection space (150) is provided with a guide slope (151), which extends along a first direction and slopes downward toward the drain hole. The guide slope (151) has a height difference in a third direction to guide the slurry into the drain hole.

8. The inclined wire forming papermaking equipment as described in any one of claims 1-4, characterized in that, The slurry guardrail (130) is located on both sides of the weir flow area (110) or the filter water forming area (120) along the first direction, and each slurry guardrail (130) is provided with the first area (131) and the second area (132).

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