High-temperature-resistant crepe paper pulp grinding device and pulping method

Abstract

The invention discloses a high-temperature-resistant crepe paper pulp grinding device and a pulping method. The device comprises a pulping barrel, a grinding assembly and a gate valve assembly. The pulping barrel is provided with a feeding port, a grinding cavity and a storage cavity which are sequentially arranged in the vertical direction; the grinding assembly is arranged between the grinding cavity and the material storage cavity and defines an annular grinding channel, the two axial ends of the annular grinding channel are through and communicate with the grinding cavity and the material storage cavity correspondingly, and the material storage cavity is used for storing materials passing through the annular grinding channel; the at least two feeding holes are formed in the circumferential direction of the annular grinding channel at intervals; the gate valve assembly comprises a driving mechanism and at least two gate valve bodies, and the gate valve bodies correspond to the feeding ports in a one-to-one mode and are installed at the feeding ports in a sliding mode. And the driving mechanism is connected with each gate valve body and drives the at least two gate valve bodies to periodically alternate at the closing position and the opening position, so that at least one feeding port is in an opening state at any moment. According to the invention, the possibility of grinding blockage caused by excessive one-time blanking can be reduced.

Description

Technical Field

[0001] This invention relates to the field of crepe paper manufacturing technology, and more particularly to a high-temperature resistant crepe paper pulp grinding device and pulping method. Background Technology

[0002] Electrical crepe paper is based on high-purity insulating wood pulp. Impurities are removed through a meticulous processing technique to ensure electrical insulation performance and mechanical strength. Precise control of pulp beating degree optimizes the bonding force between fibers, enhancing the overall strength and stability of the paper. After dewatering and molding, the pulp can be crepe-processed. Crepe-processing increases the surface contact area of ​​the paper. Therefore, electrical crepe paper usually has high temperature resistance, as well as high strength and abrasion resistance.

[0003] In related technologies, the influx of raw materials into the grinding device can easily cause the grinding device to jam frequently. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a high-temperature resistant crepe paper pulp grinding device that can alternately and intermittently feed material, thereby reducing the possibility of grinding blockage caused by excessive material feeding at one time.

[0005] The present invention also proposes a pulping method.

[0006] This invention provides a high-temperature resistant crepe paper pulp grinding apparatus, comprising a pulping tank, a grinding assembly, and a gate valve assembly. The pulping tank has a feed inlet, a grinding chamber, and a storage chamber arranged sequentially in a vertical direction. The grinding assembly is disposed between the grinding chamber and the storage chamber, forming an annular grinding channel. The annular grinding channel extends through both ends axially and connects to the grinding chamber and the storage chamber, respectively. The storage chamber stores material passing through the annular grinding channel. There are at least two feed inlets, spaced circumferentially along the annular grinding channel. The gate valve assembly includes a drive mechanism and at least two gate valve bodies. Each gate valve body corresponds to one of the feed inlets and is slidably mounted between a closed position and an open position of the feed inlet. The drive mechanism is connected to each gate valve body and configured to drive at least two gate valve bodies to periodically alternate between the closed and open positions, so that at any given time, at least one feed inlet is in an open state.

[0007] In some embodiments, the drive mechanism includes a power source and a reversing transmission assembly; the reversing transmission assembly includes a cam and a return spring; the return spring is disposed between the slide gate valve body and the feed port to drive the slide gate valve body to the open position; the cam is connected to the power source and configured to rotate under the drive of the power source to drive the slide gate valve body to overcome the elastic force of the return spring and move to the closed position, and the rotation center of the cam is coaxial with the annular grinding channel.

[0008] In some embodiments, the grinding assembly includes a grinding retaining ring and a grinding turntable. The grinding retaining ring is fixedly disposed on the inner wall of the grinding cavity, and the grinding turntable is rotatably disposed in the grinding cavity. The inner diameter of the grinding retaining ring is larger than the outer diameter of the grinding turntable, and the outer peripheral surface of the grinding turntable and the inner ring surface of the grinding retaining ring are spaced apart to form the annular grinding channel. Both the outer peripheral surface and the inner ring surface are inclined relative to the axial direction, and their inclination directions are the same.

[0009] In some embodiments, the storage chamber is constructed as a cylindrical structure; the grinding device further includes a stirring device rotatably disposed within the storage chamber, the stirring device including a stirring shaft and a stirring paddle extending radially along the stirring shaft, the stirring shaft being coaxial with the storage chamber and used to drive the stirring paddle to rotate for mixing the material in the storage chamber.

[0010] In some embodiments, a liquid addition port is provided through the wall of the storage chamber.

[0011] In some embodiments, the high-temperature resistant crepe paper pulp grinding apparatus further includes a cleaning device disposed between the storage chamber and the grinding assembly; the cleaning device includes a circumferential water equalization chamber and water spray heads arranged circumferentially at intervals along the circumferential water equalization chamber, the water spray heads communicating with the circumferential water equalization chamber and used to spray water onto one side of the cavity wall of the storage chamber.

[0012] In some embodiments, the high-temperature resistant crepe paper pulp grinding apparatus further includes a water return device; the water return device is disposed on the outer wall of the pulping tank and includes a water return pump and a water return pipe, the water return pipe is connected between the storage chamber and the circumferential water uniform chamber, and the water return pump is used to drive water from the storage chamber to the circumferential water uniform chamber.

[0013] In some embodiments, the water return device further includes a buffer chamber, an inlet pipe, and an inlet pump; the buffer chamber is fixed to the outside of the pulping tank; the inlet pipe is connected between the buffer chamber and the storage chamber, and the inlet pump is used to drive water from the storage chamber to the buffer chamber; one end of the water return pipe is connected to the bottom of the buffer chamber, and the other end is connected to the circumferential water equalization chamber.

[0014] In some embodiments, a water outlet is provided through the wall of the storage chamber, the water outlet is connected to the liquid inlet pipe and is provided with a filter screen; the cleaning device further includes a scraping part, one end of the scraping part is connected to the stirring shaft, and the other end of the scraping part extends radially along the stirring shaft and abuts against the inner side of the wall of the storage chamber to scrape the filter screen.

[0015] This invention also proposes a pulping method for use in the aforementioned high-temperature resistant crepe paper pulp grinding apparatus, comprising the following steps:

[0016] S1 Feeding: Activate the drive mechanism of the slide gate valve assembly. The drive mechanism drives at least two slide gate valve bodies to periodically switch between the closed and open positions of the corresponding feed ports, and ensures that at least one feed port is in the open state at any given time. Through the open feed port, the high-temperature resistant crepe paper pulp raw material is periodically and alternately fed into the grinding chamber along the circumference of the annular grinding channel.

[0017] S2 Grinding: The raw material put into the grinding chamber enters the annular grinding channel surrounded by the grinding assembly under its own gravity, and the grinding assembly grinds the raw material in the annular grinding channel.

[0018] S3 Storage: The material after being ground by the annular grinding channel falls into the storage chamber from its lower outlet along the axial direction of the annular grinding channel. The storage chamber temporarily stores the ground material.

[0019] S4 Cleaning: After removing the material from the discharge end of the storage chamber for later use, clean the inner wall of the storage chamber.

[0020] As can be seen from the technical solution, the embodiments provided by the present invention have the following advantages:

[0021] (1) At least two feed ports are set at intervals along the circumference of the annular grinding channel. The material can enter one end of the axial direction of the annular grinding channel from different feed ports, and can be more evenly distributed in the annular grinding channel. This helps to reduce the possibility of local material accumulation caused by single feed, make fuller use of the channel space, and make grinding more thorough due to the uniform distribution of material, thereby improving grinding efficiency.

[0022] (2) In the slide gate valve assembly, the drive mechanism can drive at least two slide gate valve bodies corresponding to the feed inlet to periodically alternate between the closed and open positions. On the one hand, it can ensure that at least one feed inlet is open at any time, so as to achieve continuous supply of raw materials. On the other hand, by opening and closing alternately, the raw materials are allowed to enter the pulping tank in batches, avoiding the possibility of channel blockage caused by a large amount of raw materials rushing into the annular grinding channel at the same time, and the grinding process runs more stably.

[0023] (3) The feed inlet, grinding chamber and storage chamber of the pulping tank are arranged in sequence along the vertical direction. The material can pass through the feed inlet and the two ends of the axial direction of the annular grinding channel in sequence by means of its own gravity, and finally enter the storage chamber. This simplifies the overall structure of the device and reduces power consumption.

[0024] (4) The two ends of the annular grinding channel are connected to the grinding chamber and the storage chamber respectively. The ground material can smoothly enter the storage chamber. The storage chamber can temporarily store the ground material, forming a continuous closed loop of feeding, grinding and storage. This avoids process interruption caused by no place to store the ground material and makes it easier to connect with subsequent processing steps. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of a high-temperature resistant crepe paper pulp grinding device according to an embodiment of the present invention.

[0027] Figure 2 This is a structural cross-sectional view of a high-temperature resistant crepe paper pulp grinding apparatus according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a gate valve assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a structural cross-sectional view of a gate valve assembly according to an embodiment of the present invention;

[0030] Figure 5 This is a structural cross-sectional view of a high-temperature resistant crepe paper pulp grinding apparatus according to an embodiment of the present invention;

[0031] Figure 6 This is an exploded view of the grinding turntable and grinding retaining ring according to an embodiment of the present invention;

[0032] Figure 7 This is a cross-sectional view of a grinding disc according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a three-way pipe according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection structure of the power source, grinding disc, scraping part and stirring device according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the connection structure of the cleaning device and the water return device according to an embodiment of the present invention;

[0036] Figure 11 This is a flowchart illustrating the manufacturing process of high-temperature resistant crepe paper according to an embodiment of the present invention.

[0037] Figure label:

[0038] High-temperature resistant crepe paper pulp grinding device 100;

[0039] 1. Pulping tank; 10. Feed inlet; 11. Grinding chamber; 12. Storage chamber; 121. Liquid addition port; 122. Discharge port; 13. Cover.

[0040] Grinding assembly 2, grinding fixing ring 21, first coarse grinding fixing ring 211, second fine grinding fixing ring 212, grinding turntable 22, first grinding turntable 221, second grinding turntable 222, annular grinding channel 23, connecting column 24, guide plate 25;

[0041] Slide valve assembly 3, drive mechanism 31, power source 311, reversing transmission assembly 312, cam 3121, return spring 3122, slide valve body 32;

[0042] 4. Stirring device; 41. Stirring shaft; 42. Stirring paddle;

[0043] Cleaning device 5, circumferential water distribution chamber 51, water spray head 52, scraping part 53;

[0044] 6. Water return device, 61. Water return pump, 62. Water return pipe, 63. Buffer chamber, 64. Liquid inlet pipe;

[0045] 7. T-joint pipe. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The following is for reference. Figures 1-10 The present invention describes a high-temperature resistant crepe paper pulp grinding apparatus 100 and a pulping method according to an embodiment of the present invention.

[0050] Example 1

[0051] like Figures 1-4 As shown, this embodiment provides a high-temperature resistant crepe paper pulp grinding device 100, which includes a pulping tank 1, a grinding assembly 2, and a gate valve assembly 3.

[0052] like Figure 2 As shown, the pulping tank 1 has a feed inlet 10, a grinding chamber 11, and a storage chamber 12. The feed inlet 10, grinding chamber 11, and storage chamber 12 are arranged sequentially in a vertical direction. A grinding assembly 2 is disposed between the grinding chamber 11 and the storage chamber 12, and the grinding assembly 2 surrounds an annular grinding channel 23. The two ends of the annular grinding channel 23 are connected axially. One end of the annular grinding channel 23 is connected to the grinding chamber 11, and the other end of the grinding channel is connected to the storage chamber 12. The storage chamber 12 can store the material passing through the annular grinding channel 23. There are at least two feed inlets 10, and the at least two feed inlets 10 are arranged at circumferential intervals along the annular grinding channel 23.

[0053] like Figure 3 and Figure 4As shown, the slide gate valve assembly 3 includes a drive mechanism 31 and at least two slide gate valve bodies 32. Each slide gate valve body 32 corresponds to a feed inlet 10. The slide gate valve body 32 is slidably installed at the feed inlet 10, and can slide between the closed and open positions of the feed inlet 10. When the slide gate valve body 32 is in the closed position, the feed inlet 10 is closed and the material cannot enter the grinding chamber 11 through the feed inlet 10. When the slide gate valve body 32 is in the open position, the feed inlet 10 is open and the material is allowed to enter the annular grinding channel 23 through the feed inlet 10.

[0054] The drive mechanism 31 is connected to each gate valve body 32. The drive mechanism 31 can drive at least two gate valve bodies 32 to periodically alternate between the closed position and the open position so that at any given time at least one feed port 10 is in the open state.

[0055] The drive mechanism 31 here can drive at least two gate valve bodies 32 to periodically alternate between closed and open positions so that at least one feed port 10 is open at any given time. This means that for each gate valve body 32, the drive mechanism 31 drives each gate valve body 32 to repeat the cycle of closed and open positions according to a fixed period. For at least two gate valve bodies 32, in one cycle, the drive mechanism 31 drives some gate valve bodies 32 to the closed position so that some feed ports 10 are closed, and the drive mechanism 31 drives at least one gate valve body 32 to the open position so that at least one feed port 10 is open. Thus, the gate valve assembly 3 can realize staggered alternating opening of the feed ports 10, reducing the possibility of blockage caused by excessive raw material entering the annular grinding channel 23, so that the raw material can enter the pulping tank 1 in batches under the premise of continuous supply.

[0056] In a specific application scenario, the electrical crepe paper raw material processed by the high-temperature resistant crepe paper pulp grinding device 100 is taken from coniferous trees (such as pine, spruce, etc.). This type of coniferous wood pulp has a long fiber length and high fiber strength, so it is suitable for manufacturing electrical crepe paper with high requirements for strength and stability. The feed inlet 10, grinding chamber 11 and storage chamber 12 are arranged sequentially in the vertical direction. Under the action of gravity, the material can pass through the feed inlet 10, one axial end of the annular grinding channel 23, the annular grinding channel 23 and the other axial end of the annular grinding channel 23 in sequence, and finally reach the storage chamber 12.

[0057] The number of feed inlets 10 is at least two, and the two feed inlets 10 are arranged circumferentially along the annular grinding channel 23. The material can enter one end of the axial direction of the annular grinding channel 23 from different feed inlets 10, so as to distribute it more evenly in the annular grinding channel 23. This not only improves the space utilization of the annular grinding channel 23, but also improves the grinding efficiency of the annular grinding channel 23.

[0058] As can be seen from the technical solution, the embodiments provided by the present invention have the following advantages:

[0059] (1) At least two feed ports 10 are arranged circumferentially along the annular grinding channel 23. The material can enter one end of the axial direction of the annular grinding channel 23 from different feed ports 10, and can be more evenly distributed in the annular grinding channel 23. This helps to reduce the possibility of local material accumulation caused by single feed, make fuller use of the channel space, and make grinding more thorough due to the uniform distribution of material, thereby improving grinding efficiency.

[0060] (2) In the slide valve assembly 3, the drive mechanism 31 can drive at least two slide valve bodies 32 corresponding to the feed inlet 10 to periodically alternate between the closed and open positions. On the one hand, it can ensure that at least one feed inlet 10 is open at any time, so as to achieve continuous supply of raw materials. On the other hand, by opening and closing alternately, the raw materials are allowed to enter the pulping tank 1 in batches, avoiding the possibility of channel blockage caused by a large amount of raw materials rushing into the annular grinding channel 23 at the same time, and the grinding process runs more stably.

[0061] (3) The feed inlet 10, grinding chamber 11 and storage chamber 12 of the pulping tank 1 are arranged in the vertical direction. The material can pass through the feed inlet 10 and the two ends of the axial direction of the annular grinding channel 23 in sequence by means of its own gravity, and finally enter the storage chamber 12. While simplifying the overall structure of the device, the power consumption is reduced.

[0062] (4) The two ends of the annular grinding channel 23 are connected to the grinding chamber 11 and the storage chamber 12 respectively. The ground material can smoothly enter the storage chamber 12. The storage chamber 12 can temporarily store the ground material, forming a continuous closed loop of feeding, grinding and storage, avoiding process interruption due to no place to store the ground material, and making it easier to connect with subsequent processing steps.

[0063] like Figure 3 , Figure 4 As shown, for example, an installation frame is provided at the feed inlet 10. The installation frame is set one-to-one with the feed inlet 10 and installed at the feed inlet 10. The installation frame is provided with a feed channel communicating with the feed inlet 10. The slide valve body 32 is slidably installed on the installation frame.

[0064] like Figure 2As shown, the drive mechanism 31 further includes a power source 311 and a reversing transmission assembly 312. The reversing transmission assembly 312 is connected to each gate valve body 32, and the reversing transmission assembly 312 can convert the rotation of the power source 311 into the linear reciprocating motion of the gate valve body 32. By setting the reversing transmission assembly 312, the arrangement of the power source 311 can be simplified, and the structure can be simplified.

[0065] like Figure 3 and Figure 4 As shown, the reversing transmission assembly 312 further includes a cam 3121 and a return spring 3122. The return spring 3122 is located between the slide gate valve body 32 and the feed port 10, and the elastic force of the return spring 3122 drives the slide gate valve body 32 to the open position; the cam 3121 is connected to the power source 311 and configured to rotate under the drive of the power source 311 to drive the slide gate valve body 32 to the closed position.

[0066] like Figure 1 and Figure 2 As shown, in a specific example, there are two feed inlets 10, which are symmetrically distributed along the axial direction of the annular grinding channel 23. The power source 311 is a rotary motor, whose rotation axis is coaxial with the annular grinding channel 23 and directly connected to the cam 3121.

[0067] like Figure 3 and Figure 4 As shown, the cam 3121 is designed to consist of two semi-circular plate-like structures joined together along their respective diameter edges, with the centers of the two semi-circular plate-like structures aligned to form a rotation center. The radii of the two plates are different. The sliding distance of the slide valve body 32 between the open and closed positions is the same as the radius of the larger semi-circular plate-like structure.

[0068] like Figure 3 and Figure 4 As shown, in a specific application scenario, the raw material box is directly connected to the feed port 10 for continuous feeding; the elastic force of the return spring 3122 acts directly on the slide valve body 32, so that the slide valve body 32 always tends to move towards the open position, and under the continuous action of the elastic force, the slide valve body 32 always abuts against the arc edge of the semi-circular plate structure.

[0069] like Figure 3 and Figure 4As shown, during the feeding process, for a slide gate valve body 32, when the rotary motor drives the cam 3121 to rotate, the semi-circular plate structure with a larger radius abuts against the slide gate valve body 32. Its arc-shaped edge can overcome the elastic force of the return spring 3122 through a full radius push stroke, and accurately push the slide gate valve body 32 to the fully closed position to close the feed port 10. When the semi-circular plate structure with a smaller radius abuts against the slide gate valve body 32, because the radial distance between the two when they are in contact is less than the above sliding stroke, the elastic force of the return spring 3122 can drive the slide gate valve body 32 to return to the open position, thereby realizing the periodic switching of a feed port 10 between the open and closed states.

[0070] like Figure 3 and Figure 4 As shown, for the two slide gate valve bodies 32, when the rotary motor drives the cam 3121 to rotate, the semi-circular plate structure with a larger radius abuts against one slide gate valve body 32. Its arc-shaped edge can overcome the elastic force of the return spring 3122 through a full radius push stroke, and accurately push one slide gate valve body 32 to the fully closed position to close the feed port 10. At the same time, when the semi-circular plate structure with a smaller radius abuts against the other slide gate valve body 32, because the radial distance between the two when they are in contact is less than the above sliding stroke, the elastic force of the return spring 3122 can drive the other slide gate valve body 32 to return to the open position, thereby realizing the alternating opening and feeding of different feed ports 10.

[0071] like Figure 3 and Figure 4 As shown, for example, the feed inlet 10 is located on the cover 13 at the top of the pulping tank 1.

[0072] Example 2

[0073] like Figure 2 As shown, the grinding assembly 2 further includes a grinding fixing ring 21 and a grinding turntable 22. The grinding fixing ring 21 is fixedly disposed on the inner wall of the grinding chamber 11, and the grinding turntable 22 is rotatably disposed in the grinding chamber 11. The inner diameter of the grinding fixing ring 21 is larger than the outer diameter of the grinding turntable 22, and an annular grinding channel 23 is formed between the outer circumferential surface of the grinding turntable 22 and the inner annular surface of the grinding fixing ring 21. Both the outer circumferential surface and the inner annular surface are inclined relative to the axial direction, and their inclination directions are the same. That is to say, the inner annular surface of the grinding fixing ring 21 and the outer circumferential surface of the grinding turntable 22 in the grinding assembly 2 are inclined along the axial direction and in the same direction, which can prolong the flow path of the material in the annular grinding channel 23, so that the material changes from vertical falling to sliding along the inclined surface, increasing the contact time and friction frequency with the grinding components, improving the fullness of pulp grinding and the uniformity of fiber fineness; at the same time, the inclined surface increases the contact area between the material and the grinding wall, improves the grinding efficiency per unit time, eliminates the need for an additional conveying mechanism, simplifies the structure, and reduces energy consumption.

[0074] like Figures 5-6 As shown, in a specific example, the grinding retaining ring 21 includes a first coarse grinding retaining ring 211 and a second fine grinding retaining ring 212 spaced apart axially, and the grinding disc 22 includes a first grinding disc 221 and a second grinding disc 222. The first coarse grinding retaining ring 211 and the first grinding disc 221 are on the same horizontal plane, and the second fine grinding retaining ring 212 and the second grinding disc 222 are on the same horizontal plane. The first coarse grinding retaining ring 211 is positioned above the second fine grinding retaining ring 212. The gap between the first coarse grinding retaining ring 211 and the first grinding disc 221 is greater than the gap between the second fine grinding retaining ring 212 and the second grinding disc 222. The annular grinding channel 23 is formed by the gap between the first coarse grinding retaining ring 211 and the first grinding disc 221 and the gap between the second fine grinding retaining ring 212 and the second grinding disc 222.

[0075] like Figure 5 , Figure 7 As shown, the first grinding disc 221 and the second grinding disc 222 are connected by a connecting column 24 and the cam 3121 shares a power source 311.

[0076] Combination Figure 5 The raw material entering the pulping tank 1 first enters the gap between the first coarse grinding fixed ring 211 and the first grinding disc 221. The first grinding disc 221 rotates to grind the material located between the first coarse grinding fixed ring 211 and the first grinding disc 221. Then, the material after being ground by the first coarse grinding fixed ring 211 and the first grinding disc 221 enters the gap between the second fine grinding fixed ring 212 and the second grinding disc 222 for further grinding, thereby achieving graded grinding of the raw material and improving the thoroughness of grinding.

[0077] like Figure 5 , Figure 7 As shown, the grinding assembly 2 further includes a guide plate 25, a first grinding disc 221, a connecting column 24, and a second grinding disc 222. The guide plate 25 is fixedly installed on the top of the first grinding disc 221. The guide plate 25 has a guide slope that is inclined relative to the horizontal direction and relative to the axial direction to guide the material from the feed port 10 to one axial end of the annular grinding channel 23.

[0078] The outer peripheral surfaces of both the first grinding disc 221 and the second grinding disc 222 are set to a matte finish, and the surface roughness of the first grinding disc 221 is greater than that of the second grinding disc 222. Through the above structure, the raw material can be ground more finely, ensuring the performance of the electrical crepe paper formed later.

[0079] Example 3

[0080] like Figure 2As shown, the storage chamber 12 is further constructed as a cylindrical structure; the grinding device also includes a stirring device 4 rotatably disposed in the storage chamber 12. The stirring device 4 includes a stirring shaft 41 and a stirring paddle 42 extending radially along the stirring shaft 41. The stirring shaft 41 is coaxial with the storage chamber 12 and is used to drive the stirring paddle 42 to rotate for mixing the material in the storage chamber 12.

[0081] Combination Figure 2 and Figure 8 Furthermore, a liquid addition port 121 is provided through the cavity wall of the storage cavity 12.

[0082] Combination Figure 2 and Figure 8 In a specific example, the liquid inlet 121 is equipped with a tee pipe 7, which includes three openable and closable pipes connected to a clean water supply device, an additive supply device, and a softener supply device, respectively. Each pipe of the tee pipe 7 is equipped with an on / off valve to control the opening or closing of the pipe.

[0083] As can be seen from the above embodiments, the ground material enters the storage chamber 12. Liquid is injected through the liquid inlet 121, and the pipe connected to the clean water supply device is opened to inject clean water into the storage chamber 12.

[0084] In related technologies, the following problems still exist in the paper pulping process: Adding water to the pulping device is inconvenient during use. Insufficient water leads to significant resistance during mixing, causing deformation of the mixing structure and affecting the lifespan of the device.

[0085] like Figure 9 As shown, in a specific example, the stirring shaft 41 is coaxially fixedly connected to the axis of the grinding disc 22, so that the grinding disc 22 can drive the stirring shaft 41 to rotate.

[0086] To ensure thorough mixing of the raw materials in the pulping tank 1, clean water can be added through the three-way pipe 7 to increase the fluidity of the pulp, thereby accelerating the mixing of the raw materials and reducing wear on the stirring device 4 during operation. Then, additive solution and softener solution are added to the pulp through the three-way pipe 7. The additive solution, composed of polyamide epichlorohydrin, AKD sizing agent, etc., effectively ensures the high-temperature resistance of the crepe paper produced subsequently, while also possessing high strength and abrasion resistance.

[0087] For example, a discharge port 122 is provided at the bottom of the storage chamber, through which the slurry in the storage chamber 12 can be discharged. Furthermore, a discharge valve is provided at the discharge port 122, which is used to control the opening or closing of the discharge port 122.

[0088] Example 4

[0089] like Figure 1 , Figure 2 and Figure 10 As shown, this embodiment is basically the same as Embodiment 3, except that the high-temperature resistant crepe paper pulp grinding apparatus 100 further includes a cleaning device 5, which is located between the storage chamber 12 and the grinding assembly 2. The cleaning device 5 includes a circumferential water distribution chamber 51 and water spray heads 52 spaced circumferentially along the circumferential water distribution chamber 51. The water spray heads 52 are connected to the circumferential water distribution chamber 51 and are used to spray water onto one side of the chamber wall of the storage chamber 12. The circumferential water distribution chamber can distribute water to different water spray heads 52, so that multiple water spray heads 52 can clean the circumferentially extending chamber wall of the storage chamber 12 by spraying water.

[0090] like Figure 2 and Figure 10 As shown, the high-temperature resistant crepe paper pulp grinding apparatus 100 further includes a water return device 6. The water return device 6 is located on the outer wall of the pulping tank 1 and includes a water return pump 61 and a water return pipe 62. The water return pipe 62 connects the storage chamber 12 and the circumferential water equalization chamber 51. The water return pump 61 drives water from the storage chamber 12 to the circumferential water equalization chamber 51. By providing the water return device 6, the water in the storage chamber 12 can be recycled for rinsing, making the high-temperature resistant crepe paper pulp grinding apparatus 100 more environmentally friendly.

[0091] like Figure 2 and Figure 10 As shown, the water return device 6 further includes a buffer chamber 63, an inlet pipe 64, and an inlet pump; the buffer chamber 63 is fixed to the outside of the pulping tank 1; the inlet pipe 64 is connected between the buffer chamber 63 and the storage chamber 12, and the inlet pump is used to drive water from the storage chamber 12 to the buffer chamber 63; one end of the water return pipe 62 is connected to the bottom of the buffer chamber 63, and the other end is connected to the circumferential water equalization chamber 51. This means that the inlet pipe 64, serving as the connecting channel between the storage chamber 12 and the buffer chamber 63, delivers the clean wastewater (including water used to rinse residual pulp) from the storage chamber 12 to the buffer chamber 63, which is fixed to the outside of the pulping tank 1, driven by the inlet pump. The buffer chamber 63 temporarily stores the incoming wastewater, using gravity to separate the pulp impurities in the water into layers, with most impurities floating or settling at the top of the buffer chamber 63. The return pipe 62 draws water from the bottom of the buffer chamber 63, avoiding the upper impurities, and delivers the relatively clean water to the circumferential water equalization chamber 51, ultimately reusing it for the water spraying operation of the cleaning device 5, forming a water circulation path of storage chamber 12, inlet pipe 64, buffer chamber 63, return pipe 62, and circumferential water equalization chamber 51. This further improves the cleaning effect.

[0092] like Figure 2 and Figure 10As shown, the storage chamber 12 is further provided with a water outlet through the chamber wall, which is connected to the inlet pipe 64 and equipped with a filter screen. The cleaning device 5 also includes a scraping part 53, one end of which is connected to the stirring shaft 41, and the other end of which extends radially along the stirring shaft 41 and abuts against the inner side of the chamber wall of the storage chamber 12 to scrape the filter screen. The filter screen installed at the water outlet of the chamber wall of the storage chamber 12 can intercept impurities such as pulp fibers and fine particles in the water of the storage chamber 12, reducing the amount of impurities entering the inlet pipe 64 and the subsequent return water device 6 with the water flow. One end of the scraping part 53 of the cleaning device 5 is fixed to the stirring shaft 41 and rotates synchronously with the stirring shaft 41, while the other end extends radially and abuts against the inner side of the chamber wall of the storage chamber 12. During the rotation, it continuously scrapes the surface of the filter screen and the nearby chamber wall, removing impurities attached to the filter screen and cleaning the material remaining on the chamber wall. This further improves the cleaning effect.

[0093] Example 5

[0094] This embodiment provides a pulping method applied to the above-mentioned high-temperature resistant crepe paper pulp grinding device, including the following steps:

[0095] S1 Feeding: The drive mechanism 31 of the slide gate valve assembly 3 is activated. The drive mechanism 31 drives at least two slide gate valve bodies 32 to periodically switch between the closed and open positions of the corresponding feed inlets 10, and ensures that at least one feed inlet 10 is in the open state at any given time. Through the open feed inlet 10, the high-temperature resistant crepe paper pulp raw material is periodically and alternately fed into the grinding chamber 11 along the circumference of the annular grinding channel 23.

[0096] S2 Grinding: The raw material put into the grinding chamber 11 enters the annular grinding channel 23 surrounded by the grinding component 2 under its own gravity, and the grinding component 2 grinds the raw material in the annular grinding channel 23.

[0097] S3 Storage: The material after being ground by the annular grinding channel 23 falls into the storage chamber 12 from its lower outlet along the axial direction of the annular grinding channel 23. The storage chamber 12 temporarily stores the ground material.

[0098] S4 Cleaning: After removing the material from the discharge end of the storage chamber 12 for later use, clean the inner wall of the storage chamber 12.

[0099] The following is combined with Figures 1-10 To describe the pulping method of the high-temperature resistant crepe paper pulp grinding apparatus 100:

[0100] In step S1, when the rotary motor drives the cam 3121 to rotate, and the semi-circular plate structure with a larger radius abuts against a slide valve body 32, its arc-shaped edge can overcome the elastic force of the return spring 3122 through a full radius push stroke, and accurately push one slide valve body 32 to the fully closed position to close the feed port 10; at the same time, when the semi-circular plate structure with a smaller radius abuts against another slide valve body 32, because the radial distance between the two when they are in contact is less than the above-mentioned sliding stroke, the elastic force of the return spring 3122 can drive the other slide valve body 32 to return to the open position, thereby realizing the alternating opening and feeding of different feed ports 10.

[0101] In step S2, specifically, a graded grinding step is performed: the raw material entering the pulping tank 1 first enters the gap between the first coarse grinding fixed ring 211 and the first grinding disc 221, and the first grinding disc 221 rotates to grind the material located between the first coarse grinding fixed ring 211 and the first grinding disc 221; then, the material ground between the first coarse grinding fixed ring 211 and the first grinding disc 221 enters the gap between the second fine grinding fixed ring 212 and the second grinding disc 222 for grinding, thereby achieving graded grinding of the raw material and improving the thoroughness of grinding.

[0102] Step S3 includes the following sub-steps:

[0103] S31 Water Addition, Stirring, and Filtration: Excess water is added to the storage chamber through the liquid addition port 121. The stirring device 4 stirs the ground material and water together. The inlet pump is turned on, driving the slurry in the storage chamber 12 into the water inlet pipe. The filtration device then traps solids in the storage chamber 12. As the stirring shaft 41 rotates, the scraper 53 mounted on the stirring shaft 41 rotates synchronously. At this time, the scraper 53 begins to scrape and clean the inner wall of the storage chamber 12 and the filter screen, preventing the raw material from clogging the water outlet and reducing the amount of slurry adhering to the inner wall of the storage chamber 12. The filtered slurry is stored in the buffer chamber 63 and naturally stratifies.

[0104] S32: Adding additives: The additive supply device and the softener liquid supply device are introduced into the storage chamber 12. At this time, the additive liquid and softener liquid can be added to the pulp through the three-way pipe 7 and the liquid addition port 121. The additive liquid is composed of polyamide epichlorohydrin, AKD sizing agent, etc., which can effectively ensure the high temperature resistance of the crepe paper produced later, and at the same time have high strength and abrasion resistance.

[0105] S33 continues to stir the pulp and discharges the mixed pulp through the discharge port so that it can be further processed into crepe paper.

[0106] S4 Cleaning: After the slurry is discharged, the return water pump 61 is started to work. The return water pump 61 begins to extract the liquid in the buffer chamber 63 and then sprays it out through the spray head 52 to rinse the inner wall of the storage chamber 12.

[0107] The following describes the specific manufacturing process of a high-temperature resistant crepe paper. After step S4 above, it also includes:

[0108] S5 dewatering molding: The discharged slurry is dewatered and molded;

[0109] S6 wrinkling treatment: Wrinkling is performed on the dehydrated and molded wet material;

[0110] S7 Drying and Glue Application: Dry the wet material and apply glue to fix it.

[0111] Other configurations and operations of the high-temperature resistant crepe paper pulp grinding apparatus 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of the features. The up-down direction, left-right direction, and front-back direction are defined as shown in the figures.

[0112] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0114] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-temperature resistant crepe paper pulp grinding device, characterized in that, include: The pulping tank (1) has a feed inlet (10), a grinding chamber (11) and a storage chamber (12) arranged sequentially in the vertical direction. The grinding assembly (2) is located between the grinding chamber (11) and the storage chamber (12) and forms an annular grinding channel (23). The two ends of the annular grinding channel (23) are connected and respectively connect the grinding chamber (11) and the storage chamber (12). The storage chamber (12) is used to store the material passing through the annular grinding channel (23). The feed inlets (10) are at least two and are spaced apart circumferentially along the annular grinding channel (23); The slide gate valve assembly (3) includes a drive mechanism (31) and at least two slide gate valve bodies (32), wherein each slide gate valve body (32) corresponds to one of the feed inlets (10) and is slidably installed between the closed position and the open position of the feed inlets (10); The drive mechanism (31) is connected to each of the gate valve bodies (32) and is configured to drive at least two of the gate valve bodies (32) to periodically alternate between the closed position and the open position, so that at any given time at least one of the feed ports (10) is in the open state.

2. The high-temperature resistant crepe paper pulp grinding device according to claim 1, characterized in that, The drive mechanism (31) includes a power source (311) and a reversing transmission assembly (312). The reversing transmission assembly (312) includes a cam (3121) and a return spring (3122). The reset spring (3122) is located between the slide gate valve body (32) and the feed port (10) to drive the slide gate valve body (32) to move to the open position; The cam (3121) is connected to the power source (311), and the cam (3121) is configured to rotate under the drive of the power source (311) to drive the slide valve body (32) to overcome the elastic force of the return spring (3122) and move to the closed position. The rotation center of the cam (3121) is coaxial with the annular grinding channel (23).

3. The high-temperature resistant crepe paper pulp grinding device according to claim 1, characterized in that, The grinding assembly (2) includes a grinding fixing ring (21) and a grinding turntable (22). The grinding fixing ring (21) is fixedly disposed on the inner wall of the grinding cavity (11). The grinding turntable (22) is rotatably disposed in the grinding cavity (11). The inner diameter of the grinding fixing ring (21) is larger than the outer diameter of the grinding turntable (22), and the outer peripheral surface of the grinding turntable (22) and the inner ring surface of the grinding fixing ring (21) are spaced apart to form the annular grinding channel (23). Both the outer peripheral surface and the inner annular surface are inclined relative to the axial direction, and the inclination directions of the two are the same.

4. The high-temperature resistant crepe paper pulp grinding device according to claim 3, characterized in that, The storage chamber (12) is constructed in a cylindrical shape; The grinding device also includes a stirring device (4) rotatably disposed in the storage chamber (12). The stirring device (4) includes a stirring shaft (41) and a stirring paddle (42) extending radially along the stirring shaft (41). The stirring shaft (41) is coaxial with the storage chamber (12) and drives the stirring paddle (42) to rotate for mixing the material in the storage chamber (12).

5. The high-temperature resistant crepe paper pulp grinding device according to claim 4, characterized in that, The storage chamber (12) has a liquid addition port (121) through the cavity wall.

6. The high-temperature resistant crepe paper pulp grinding device according to claim 4, characterized in that, It also includes a cleaning device (5), which is disposed between the storage chamber (12) and the grinding assembly (2); The cleaning device (5) includes a circumferential water distribution chamber (51) and spray heads (52) arranged circumferentially at intervals along the circumferential water distribution chamber (51). The spray heads (52) are connected to the circumferential water distribution chamber (51) and are used to spray water onto one side of the cavity wall of the storage chamber (12).

7. The high-temperature resistant crepe paper pulp grinding apparatus according to claim 6, characterized in that, It also includes a water return device (6); The water return device (6) is located on the outer wall of the pulping tank (1) and includes a water return pump (61) and a water return pipe (62). The water return pipe (62) connects the storage chamber (12) and the circumferential water equalization chamber (51). The water return pump (61) is used to drive water from the storage chamber (12) to the circumferential water equalization chamber (51).

8. The high-temperature resistant crepe paper pulp grinding apparatus according to claim 7, characterized in that, The water return device (6) also includes a buffer chamber (63), an inlet pipe (64), and an inlet pump; The buffer chamber (63) is fixed to the outside of the pulping tank (1); The inlet pipe (64) is connected between the buffer chamber (63) and the storage chamber (12), and the inlet pump is used to drive water from the storage chamber (12) to the buffer chamber (63); One end of the return water pipe (62) is connected to the bottom of the buffer chamber (63), and the other end is connected to the circumferential water equalization chamber (51).

9. The high-temperature resistant crepe paper pulp grinding apparatus according to claim 8, characterized in that, The storage chamber (12) has a water outlet through the cavity wall, and the water outlet is connected to the liquid inlet pipe (64) and is equipped with a filter screen; The cleaning device (5) further includes a scraping part (53), one end of which is connected to the stirring shaft (41), and the other end of which extends radially along the stirring shaft (41) and abuts against the inner side of the cavity wall of the storage chamber (12) to scrape the filter screen.

10. A pulping method, applied to the high-temperature resistant crepe paper pulp grinding apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1 Feeding: Start the drive mechanism (31) of the gate valve assembly (3), the drive mechanism (31) drives at least two gate valve bodies (32) to periodically switch between the closed and open positions of the corresponding feed inlets (10), and ensure that at least one feed inlet (10) is in the open state at any time; through the open feed inlet (10), the high temperature resistant crepe paper pulp raw material is periodically and alternately fed into the grinding chamber (11) along the circumference of the annular grinding channel (23); S2 Grinding: The raw material put into the grinding chamber (11) enters the annular grinding channel (23) surrounded by the grinding assembly (2) under its own gravity, and the raw material in the annular grinding channel (23) is ground by the grinding assembly (2); S3 Storage: The material after being ground by the annular grinding channel (23) falls into the storage chamber (12) from its lower outlet along the axial direction of the annular grinding channel (23). The storage chamber (12) temporarily stores the ground material. S4 Cleaning: After taking the material out of the discharge end of the storage chamber (12) for later use, clean the inner wall of the storage chamber (12).

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