Glass fiber chopped material drying equipment

Abstract

The invention relates to the technical field of glass fiber recycling and processing equipment, and particularly discloses glass fiber chopped material drying equipment which comprises a drying box, the two ends of an inner cavity of the drying box are divided into a progress area and a return area through a partition plate, and a closed-loop type conveying assembly is arranged in the drying box. A plurality of open-close type hole disc assemblies are arranged on the closed-loop type conveying assembly at equal intervals, each open-close type hole disc assembly comprises a material containing hole disc, a material pressing hole plate is rotationally connected to the position, close to one side of the closed-loop type conveying assembly, in the material containing hole disc through a torsional spring, and a feeding opening is formed in the outer wall of the lower end of the progress area; a feeding unit with one end movably extending into the progress area is arranged on the outer side of the feeding port. The glass fiber chopped material drying equipment disclosed by the invention is compact in structure and small in occupied area, and the glass fiber chopped materials can be continuously conveyed and dried in a sectional manner through the circularly moving opening and closing type hole disc assembly, so that the material drying speed is high, the drying is more uniform, and the drying effect of the glass fiber chopped materials is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber recycling and processing equipment, and particularly discloses a glass fiber chopped material drying device. Background Art

[0002] During the glass fiber recycling process, it first needs to be placed in a chemical tank for soaking and cleaning. After cleaning, it is centrifugally dehydrated and then chopped. The resulting chopped materials need to be dried before they can be packaged and stored. There are two main types of drying equipment for existing glass fiber chopped materials: the first is a drying box + pallet form, that is, the chopped materials are manually laid on the pallet, and then the pallet is sent to the bracket in the drying box for drying. This type of drying equipment has low drying efficiency and requires frequent opening of the box door to put in and take out the pallet, resulting in serious internal heat loss; the second is a drying channel + conveyor belt form. During the drying process, the chopped materials are laid on the conveyor belt, and then the conveyor belt transports them through the drying channel to complete the drying. When drying the glass fiber, this type of drying equipment causes uneven drying of the bottom material and the surface material above the conveyor belt. In addition, in order to ensure the drying effect, the length of the entire drying channel needs to be extended, resulting in a large equipment footprint.

[0003] For example, patent application number 2024110736250 discloses a glass fiber drying device, comprising a drying chamber and a frame, wherein the inner wall of the frame is fixedly connected to a fixed rod, one end of the fixed rod is rotatably connected to a support frame, a side wall of the support frame is provided with a cavity, and one end of the fixed rod passes through the support frame and extends into the cavity, one end of the fixed rod located in the cavity is fixedly connected to a first gear, a support plate is provided in the support frame, and both ends of the support plate are fixedly connected to a rotating shaft, which is rotatably connected to the support frame, one end of the rotating shaft located on one side of the support plate passes through the support frame and extends into the cavity, the inner wall of the frame is provided with a cavity, and a drive mechanism and a limiter are respectively provided in the cavity, and a channel is connected to one side wall of the drying chamber, and a loading mechanism is provided in the channel. This drying device is a drying box + tray form, except that the tray form has been redesigned. However, during the drying process, not only does manual laying of the materials need to be done, but also manual pushing and pulling of the frame into and out of the drying chamber is required. Its degree of automation is low, and manual assistance is required throughout the process. In addition, the glass fiber chopped material laid on the support plate surface still suffers from uneven heating of the upper and lower layers, resulting in poor drying effect. Therefore, to address the above shortcomings of existing glass fiber chopped material drying equipment, this application designs a new structure of glass fiber chopped material drying equipment to achieve efficient, uniform, and fully automated drying of glass fiber chopped material. Summary of the Invention

[0004] The present invention aims to provide a glass fiber chopped material drying device to achieve efficient, uniform and fully automatic drying of the glass fiber chopped material.

[0005] The present invention is achieved through the following technical solutions: A glass fiber chopped material drying device includes a drying box, wherein both ends of the drying box inner cavity are divided into a process area and a return area by vertically arranged partitions, a closed-loop transmission component enclosed on the outside of the partition is provided inside the drying box, a plurality of open-and-close orifice disc components are evenly spaced on the closed-loop transmission component, the open-and-close orifice disc component includes a material-containing orifice disc, a material-containing orifice disc close to one side of the closed-loop transmission component is rotatably connected to a material-pressing orifice plate via a torsion spring, and a limiting plug-in for limiting the material-pressing orifice plate is connected to the other side of the material-containing orifice disc via a first spring; A feed port is provided on the outer wall of the lower end of the process zone, and a feed unit with one end movable and extending into the process zone is provided on the outer side of the feed port. An exhaust filter unit is connected to the top of the drying box through a pipeline, and hot air units with an upward exhaust angle are provided at the lower ends of the process zone and the return zone. A discharge channel is provided at the bottom of the drying box, and a discharge conveyor extending out of the drying box is provided in the discharge channel.

[0006] During operation of the glass fiber chopped material drying equipment disclosed in the present invention, a feed unit extends through a feed port into the lower end of the process zone. As the open-and-close perforated plate assembly rotates and moves below it, the feed unit discharges the material so that it is evenly laid out in the material-holding perforated plate. The pressure plate is then closed to confine the material within. The open-and-close perforated plate assembly, containing the material, is then transported upward from the lower end of the process zone by a closed-loop transmission assembly. During this upward movement, hot air is introduced from the bottom wall, causing the hot air to flow upward from the bottom layer of the material, thereby achieving the first drying of the material. The hot and humid gases generated during the drying process are extracted and filtered by the exhaust filtration unit.

[0007] When the open-and-close perforated tray assembly reaches the top of the drying box, it begins to flip, turning 180° until it has flipped 180°. This causes the upper and lower layers of material within the assembly to be reversed and move downward along the return zone. During this downward movement, it is again exposed to the upward flow of hot air, causing it to flow in the opposite direction along the material layer, thus completing the second drying of the material. Because the hot air drying of the material within the open-and-close perforated tray assembly occurs twice, flowing on the upper and lower surfaces of the material, respectively, it ensures that the material is fully and evenly dried. Simultaneously, multiple open-and-close perforated tray assemblies circulate in a closed-loop transmission assembly, enabling segmented and continuous drying of chopped glass fiber, greatly improving drying efficiency.

[0008] As a further configuration of the above scheme, the feeding unit includes a bottom frame, which is connected to a conveyor seat that moves and extends into the feed port via a push cylinder. The conveyor seat is provided with a conveyor belt, and a discharge device is fixed directly above the conveyor belt. The above is a specific design scheme of the feeding unit. During the feeding process, the discharge device first evenly spreads the chopped glass fiber on the surface of the conveyor belt, and then the conveyor belt is sent to the process area. The conveyor belt controls its outward movement while discharging the chopped glass fiber, so that the chopped glass fiber can be evenly laid in the material storage hole plate.

[0009] As a further feature of the above solution, the unloading device consists of a hopper and a rotating unloading mechanism, with a combing brush positioned above the conveyor belt between the unloading device and the feed port. The design of the unloading device and combing brush not only spreads the chopped glass fiber from the hopper onto the conveyor belt surface, but also, through the combing action of the combing brush, evenly combs the chopped glass fiber into a state parallel to the conveying direction, allowing the material to be subsequently evenly transferred and laid into the perforated material tray.

[0010] As a further development of the above solution, the closed-loop transmission assembly includes rotating shafts rotatably mounted above and below the partitions, with drive motors connected to the ends of the shafts. Each shaft is equipped with a transmission wheel, with a transmission member positioned between the upper and lower transmission wheels. Multiple perforated trays are evenly spaced and connected to the transmission member. This is a specific design of the closed-loop transmission assembly. The drive motor drives the transmission wheels to rotate, thereby driving the transmission member to move at a constant speed. This allows the open-and-close perforated tray assembly to circulate within the drying box under the action of the transmission member.

[0011] As a further configuration of the above scheme, a connecting frame extending into the process area is provided at the lower end of the partition, a push rod toward the feed port is provided through the connecting frame, one end of the push rod is connected to a pressure wheel acting on the pressure plate, and the other end is connected to an extrusion block, and a second spring is provided between the extrusion block and the connecting frame, and a cam acting with the extrusion block is provided on the rotating shaft below. Through the above structural design, after the material-containing orifice plate is evenly filled with chopped glass fiber, the material-containing orifice plate can make the cam act on the extrusion block as the transmission part moves upward, so that the push rod overcomes the action of the second spring and moves toward the side of the feed port, and finally the pressure plate is pressed into the upper opening of the material-containing orifice plate by the pressure wheel and fixed by the limit plug-in, thereby realizing the automatic closing process of the open-and-close orifice plate assembly.

[0012] As a further configuration of the above scheme, an adsorption magnetic block is provided at the lower end of the outer wall of the return zone, and the outer end of the limit plug-in is provided with a magnet that interacts with the adsorption magnetic block or is made of iron material. Through the design of the above scheme, under the premise that the opening and closing hole plate assembly has automatic closing, when the opening and closing hole plate assembly moves downward to above the discharge conveyor, the limit plug-in is forcibly pulled outward by the magnetic attraction, thereby releasing the limiting effect of the limit plug-in on the pressure hole plate, and then the pressure hole plate automatically opens under the action of the torsion spring and gravity, so that the dried glass fiber chopped material in the material storage hole plate automatically falls onto the discharge conveyor, and then the discharge conveyor sends it out of the drying box.

[0013] As a further configuration of the above scheme, the material holding hole plate is connected to the transmission member through an elastic steel plate connector, and a baffle that interacts with the opening and closing hole plate assembly is fixed to the upper end of the outer wall of the return zone. Through the further configuration of the above scheme, when the material holding hole plate is turned 180 degrees and moved downward at the top of the drying box, the elastic steel plate connector will gradually bend due to the obstruction of the baffle on the opening and closing hole plate assembly until the opening and closing hole plate assembly slips off the baffle, and after slipping, the elastic restoring force of the elastic steel plate connector causes the closing hole plate assembly to swing back and forth, so that the material inside the opening and closing hole plate assembly can be automatically leveled under high-frequency vibration, avoiding the situation where the material inside the opening and closing hole plate assembly moves to one end and accumulates when the top is turned over due to too little material inside the opening and closing hole plate assembly and not being compacted, thereby ensuring that the hot air can dry it evenly again in the return stage to ensure the drying effect.

[0014] As a further feature of the above solution, the air extraction and filtration unit includes an air extraction pump, a drying and filtration box, and an air extraction pipe, each connected in sequence. The end of the air extraction pipe is connected to the top of the drying box. The air extraction and filtration unit can extract the hot and humid air generated during the drying process from both sides of the drying box from the top of the drying box, filter and dry it, and then discharge it.

[0015] As a further feature of the above solution, the hot air unit includes a hot air source and a hot air duct. One end of the hot air duct is connected to the hot air source, and the other end is connected to a U-shaped air distribution duct. The ends of the air distribution duct extend into the lower ends of the process zone and the return zone, respectively, and each end of the air distribution duct is provided with a row of upwardly slanted air outlets. The hot air unit can blow hot air upward from the bottom of the process zone and the return zone, so that the hot air contacts the material inside the open and close perforated tray assembly during its upward flow, thereby fully drying the material.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The glass fiber chopped material drying equipment disclosed in the present invention adopts a vertically arranged drying box, in which a closed-loop transmission component is used to drive an open-and-close perforated plate component to circulate along a process zone and a return zone, and then the material is dried by the hot air from bottom to top on both sides during the movement in the process zone and the return zone; the entire drying equipment is not only compact in structure and occupies little space, but also can carry out segmented and continuous transportation and drying of the glass fiber chopped material through the circulating open-and-close perforated plate component, which greatly ensures the drying efficiency.

[0017] The openable and closable perforated plate assembly of the present invention can swap the surfaces of the internal material and the hot air after being flipped 180 degrees at the top of the drying box, so that the bottom layer of the material in the openable and closable perforated plate assembly first acts on the hot air in the process area, and the original surface material in the return area is reversed and then acts on the hot air, so that each layer of the material in the openable and closable perforated plate assembly can fully contact with the hot air, so that the material dries faster and more evenly, and the drying effect of the glass fiber chopped material is effectively improved.

[0018] The present invention adopts a specially designed feeding unit. When loading, the material in the hopper is first laid on the conveyor belt, and then the conveyor belt is extended into the interior of the drying box and is located above the opening of the open-close perforated plate assembly. Then, while the conveyor belt is discharging the material, the conveyor belt is controlled to move outward at the same time, so that the material laid on the conveyor belt can be evenly transferred and laid in the open-close perforated plate assembly. The evenly laid material can effectively improve the drying speed and ensure drying uniformity in the subsequent drying process.

[0019] The present invention also designs the automatic opening and closing process of the opening and closing orifice plate assembly. Under the action of magnetism, the limiting plug-in can be automatically pulled out to release the limiting effect on the material pressing orifice plate, so that the opening and closing orifice plate assembly can automatically open and complete material discharge; using the design of cam, extrusion block, push rod, pressure wheel, etc., in the process of upward movement after the material is laid in the opening and closing orifice plate assembly, the push rod can automatically move to the side of the feed port, so that the pressure wheel acts on the material pressing orifice plate, automatically pressing the material pressing orifice plate into the material holding orifice plate, and it is limited by the limiting plug-in, realizing the automatic closing of the opening and closing orifice plate assembly, without the need for manual operation of personnel throughout the process, which not only improves the degree of automation of the entire equipment, but also improves the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1This is a schematic diagram of the three-dimensional structure of the present invention from a first angle; Figure 2 This is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the interior of the drying box of the present invention from a first angle; Figure 4 This is a schematic diagram of the third perspective structure of the interior of the drying box of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the retractable orifice plate assembly from a first angle in the present invention; Figure 6 A schematic diagram of the three-dimensional structure of the retractable orifice plate assembly according to the present invention from a second angle; Figure 7 Schematic diagram of the three-dimensional structure of the feeding unit in the present invention; Figure 8 Schematic diagram of the three-dimensional assembly structure of the feeding unit in the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the connecting frame, push rod, extrusion block, etc. in the present invention; Figure 10 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0024] Example 1 discloses a glass fiber chopped material drying device, see the attached Figure 1 and attached Figure 2 The main body of the drying equipment includes a vertical drying box 1. A feed inlet 100 is opened at the lower end of one side of the drying box 1, and a feed unit 2 is arranged outside the feed inlet 100. The top of the drying box 1 is connected to an exhaust filter unit 3 through a pipe, and a hot air unit 4 is connected to the front side of the drying box 1.

[0025] Reference Attachment Figure 3 and attached Figure 4 A vertical partition 5 is fixed in the middle of the interior of the drying box 1, so that the partition 5 divides the two ends of the inner cavity of the drying box 1 into a process zone and a return zone respectively, and the feed port 100 is opened at the lower end of the corresponding process zone. Rotating shafts 6 are rotatably arranged inside the drying box 1 above and below the partition 5, and the end of one of the rotating shafts 6 is connected to a drive motor 7 fixed to the outer wall of the drying box 1. A transmission wheel 8 is provided at both ends of each rotating shaft 6, and then a transmission member 9 is provided between the upper and lower transmission wheels 8. In the specific design, the transmission wheel 8 can be a pulley or a sprocket, and the transmission member 9 can be a transmission belt or a transmission chain accordingly, so that the rotating shaft 6, the drive motor 7, the transmission wheel 8 and the transmission member 9 form a closed-loop transmission component, and the partition 5 is located in the middle of the interior of the closed-loop transmission component.

[0026] A plurality of open and close perforated tray assemblies 10 for placing chopped glass fiber materials are connected at equal intervals on the outer surface of the transmission member 9, so that the feeding unit 2 can press and fix the chopped glass fiber materials after laying them inside. Figure 5 and attached Figure 6 The opening and closing orifice plate assembly 10 includes a material-capacity orifice plate 101, a material-pressing orifice plate 102 is rotatably arranged in the opening of the material-capacity orifice plate 101 on the side close to the transmission member 9, and a torsion spring 103 is provided at the rotational connection between the two, so that under the action of the torsion spring, the material-pressing orifice plate 102 is perpendicular to the material-capacity orifice plate 101, which is convenient for subsequent material loading and spreading. In addition, a limiting plug-in 105 is connected to the end of the material-capacity orifice plate 101 away from the transmission member 9 through a first spring 104. When the material-pressing orifice plate 102 rotates to the upper end opening of the material-capacity orifice plate 101, the limiting plug-in 105 can be pressed outward first, and then rebounded instantly under the action of the first spring 104, so that the limiting plug-in 105 can limit and fix the material-pressing orifice plate 102.

[0027] Reference Attachment Figure 9 and attached Figure 10 The feeding unit 2 includes a bottom frame 201, a slide rail 202 is provided on the upper surface of the bottom frame 201, and a conveying seat 203 is slidably provided on the slide rail 202, and a horizontally arranged conveyor belt 204 is provided in the conveying seat 203. A pushing cylinder 205 is fixedly mounted on the bottom frame 201, and the end of the piston rod of the pushing cylinder 205 is connected to the lower end of the conveying seat 203, so that the conveying seat 203 can be pushed to move along the slide rail 202 under the action of the pushing cylinder 205, so that the conveying seat 203 can be extended through the feed port 100 to the top of the openable and retractable orifice plate assembly 10 at the bottom of the process area.

[0028] Directly above the bottom frame 201, a feeding device 207 is fixedly connected via a bracket 206 and is arranged perpendicular to the conveying direction of the conveyor belt 204. The feeding device 207 is composed of a hopper and a rotary feeding mechanism, so that the chopped glass fiber in the hopper can be evenly discharged under the drive of the rotary feeding mechanism and fall onto the upper surface of the conveyor belt 204. In addition, a U-shaped frame 208 is provided on the bottom frame 201 between the feeding device 207 and the feed port 100. A downwardly disposed combing brush 210 is connected to the U-shaped frame 208 via a telescopic cylinder 209. When the conveyor belt 204 transports the chopped glass fiber toward the feed port 100, the combing brush 210 can evenly comb the chopped glass fiber into a state parallel to the conveying direction, and then lay it in the material holding hole plate 101 perpendicular to the air holes above, preventing the chopped glass fiber from falling from the bottom of the open and close hole plate assembly 10 through the air holes.

[0029] Reference Attachment Figure 1 , Attachment Figure 2 and attached Figure 3 The air extraction and filtration unit 3 includes an air extraction pump 301, a drying filter box 302 and an air extraction pipe 303. The upper end of the air extraction pipe 303 is connected to the top of the drying box 1, and the other end is connected to the drying filter box 302. The air extraction pump 301 is then connected to the drying filter box 302, so that the hot and humid gas drawn in is processed by the filter layer and the drying layer inside the drying filter box 302 before being discharged.

[0030] The hot air unit 4 includes a hot air source 401 and a hot air pipe 402. The hot air source 401 can be a hot air blower or other hot air generator. One end of the hot air pipe 402 is connected to the hot air source 401, and then a U-shaped air distribution pipe 403 is connected to the other end of the hot air pipe 402. The two ends of the air distribution pipe 403 are respectively located at the lower ends of the process area and the return area, and a row of upwardly inclined air outlets 404 are provided on its surface, so that the hot air can be blown upwardly toward the open and close orifice plate assembly 10 through the action of the air outlet 404, and the chopped material inside the open and close orifice plate assembly 10 is dried in the process of flowing through it. The dried hot and humid gas is extracted and filtered by the exhaust filter unit 3.

[0031] Finally, a discharge channel 11 is provided in the drying box 1, and a discharge conveyor 12 is provided in the discharge channel 11 with one end extending out of the drying box 1. When the chopped glass fiber materials in the opening and closing hole plate assembly 10 are dried, they are moved to the top of the discharge channel 11, and the limiting effect on the pressure hole plate 102 is released by pulling out the limit plug-in 105, so that the pressure hole plate 102 is rotated downward to open the opening, and then the dried material falls onto the discharge conveyor 12 for delivery.

[0032] During the operation of the glass fiber chopped material drying equipment disclosed in this embodiment 1, the glass fiber chopped material in the material bin is evenly discharged by the unloading device 207 and laid on the upper surface of the conveyor belt 204. At the same time, while the conveyor belt 204 is transporting the material, the combing brush 210 evenly combs the glass fiber chopped material into a state parallel to the conveying direction.

[0033] Then, the push cylinder 205 is activated to extend the conveying seat 203 through the feed inlet 100 to the top of the openable orifice plate assembly 10 at the bottom of the process area, and the openable orifice plate assembly 10 is now in the open state. Then, while the conveyor belt 204 continues to convey, the push cylinder 205 is synchronously controlled to extend in the opposite direction, so that the conveying seat 203 moves outward from the feed inlet 100, so that the material falling from the conveyor belt 204 can be evenly laid on the upper surface of the material holding orifice plate 101. After the material is laid, the pressure plate 102 is closed to clamp it inside the openable orifice plate assembly 10.

[0034] Subsequently, the open-and-close perforated plate assembly 10 containing the material is transported upward by the closed-loop transmission assembly, and during the transport process, it is dried by the hot air flow discharged from one side of the air distribution duct 403. When the open-and-close perforated plate assembly 10 is turned 180 degrees from the top of the drying box 1 and then transported downward, the upper and lower layers of the open-and-close perforated plate assembly 10 are reversed and are again subjected to the upward hot air flow after the reversal, so that the upper and lower layers of the material inside the open-and-close perforated plate assembly 10 can successively contact the hot air flow, thereby achieving sufficient and uniform drying of the upper and lower layers of the material.

[0035] Finally, when the dried material moves to the top of the discharge conveyor 12 along with the opening and closing orifice plate assembly 10, the limit plug-in 105 is pulled outward so that the limit plug-in 105 releases the restriction on the pressure orifice plate 102. At this time, the pressure orifice plate 102 rotates downward under the action of the torsion spring and its own gravity, thereby opening the opening of the opening and closing orifice plate assembly 10, so that the dried material falls onto the discharge conveyor 12 and is sent out by it. Example 2

[0036] Example 2 discloses a glass fiber chopped material drying equipment further designed based on the technical solution in Example 1. It is mainly designed for the automatic opening and closing of the opening and closing perforated plate assembly 10. The similarities with Example 1 will not be described again.

[0037] Reference Attachment Figure 1 , Attachment Figure 3 , Attachment Figure 7 and attached Figure 8In this embodiment 2, an adsorption magnetic block 13 is provided on the side wall of the drying box 1 above the discharge channel 11, and a magnet adsorbed thereto is provided on the outer end of the limiting plug-in 105 or the limiting plug-in 105 is made of iron material, so that when the opening and closing orifice plate assembly 10 moves downward to be aligned with the adsorption magnetic block 13, the limiting plug-in 105 is automatically pulled outward by the magnetic action, thereby releasing the restriction on the pressing orifice plate 102.

[0038] The lower end of the partition 5 is connected to a connecting frame 14 extending into the process area, and a push rod 15 arranged toward the feed port 100 is inserted on the connecting frame 14, and a pressure wheel 16 is connected to the end of the push rod 15 facing the feed port 100. The other end of the push rod 15 is connected to an extrusion block 17, and a second spring 18 is provided between the extrusion block 17 and the connecting frame 14. A cam 19 is provided on the lower rotating shaft 6, and the cam 19 interacts with the extrusion block 17. When the raised portion on the cam 19 interacts with the extrusion block 17, the push rod 15 is pushed toward the side of the feed port 100, and then the pressure wheel 16 acts on the material pressing orifice plate 102 in a vertical state, thereby forcibly pressing the material pressing orifice plate 102 into the upper end opening of the material holding orifice disc 101, and is automatically fixed by the limit plug 105. Finally, the push rod 15 retracts and resets to avoid obstruction to the transportation of the open and close orifice disc assembly 10.

[0039] Reference Attachment Figure 4 and attached Figure 6 The retractable perforated plate assembly 10 in this embodiment 2 is connected to the outer surface of the transmission member 9 through an elastic steel plate connector 106, and a baffle 20 is fixed to the upper end of the inner wall of the drying box 1 in the return zone. Through the above-mentioned design, in the present embodiment 2, when the open-close orifice plate assembly 10 is flipped 180 degrees and moved downward from the top of the drying box 1, the baffle 20 has an obstructive effect on the open-close orifice plate assembly 10, which will cause the elastic steel plate connecting piece 106 to bend until the open-close orifice plate assembly 10 slips off the baffle 20. After slipping, due to the elastic restoring force, the open-close orifice plate assembly 10 will swing up and down with high frequency vibration under the action of the elastic steel plate connecting piece 106, so that the short-cut materials inside the open-close orifice plate assembly 10 can be automatically leveled, avoiding the situation where the materials inside the open-close orifice plate assembly 10 are too little and not compacted, and the materials inside the open-close orifice plate assembly 10 are moved to one end and accumulated when the top is flipped, ensuring that the hot air can dry them evenly again in the return stage to ensure the drying effect.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A glass fiber chopped material drying equipment, comprising a drying box, characterized in that: The two ends of the inner cavity of the drying box are divided into a process area and a return area by vertically arranged partitions. A closed-loop transmission component is provided inside the drying box and is enclosed on the outside of the partition. A plurality of open and close orifice disc components are arranged at equal intervals on the closed-loop transmission component. The open and close orifice disc component includes a material holding orifice disc, and the material holding orifice disc close to one side of the closed-loop transmission component is rotatably connected to a material pressing orifice plate through a torsion spring. The other side of the material holding orifice disc is connected to a limiting plug-in for limiting the material pressing orifice plate through a first spring. A feed port is provided on the outer wall of the lower end of the process zone, and a feed unit with one end movable and extending into the process zone is provided on the outer side of the feed port. An exhaust filter unit is connected to the top of the drying box through a pipeline, and hot air units with an upward exhaust angle are provided at the lower ends of the process zone and the return zone. A discharge channel is provided at the bottom of the drying box, and a discharge conveyor extending out of the drying box is provided in the discharge channel.

2. The glass fiber chopped material drying equipment according to claim 1, characterized in that: The feeding unit includes a bottom frame, which is connected to a conveying seat that moves and extends into the feeding port through a pushing cylinder. A conveying belt is provided in the conveying seat, and a feeding device is fixed just above the conveying belt.

3. The glass fiber chopped material drying equipment according to claim 2, characterized in that: The unloading device is composed of a hopper and a rotary unloading mechanism, and a combing brush is arranged above the conveyor belt between the unloading device and the feed port.

4. The glass fiber chopped material drying equipment according to claim 1, characterized in that: The closed-loop transmission component includes a rotating shaft rotatably arranged above and below the partition, and the end of the rotating shaft is connected to a drive motor, each of the rotating shafts is provided with a transmission wheel, and a transmission member is provided between the upper and lower transmission wheels, and multiple material storage hole plates are connected to the transmission member at equal intervals.

5. The glass fiber chopped material drying equipment according to claim 4, characterized in that: The lower end of the partition is provided with a connecting frame extending into the process area, and a pushing rod toward the feed port is provided through the connecting frame. One end of the pushing rod is connected to a pressure wheel acting on the pressure hole plate, and the other end is connected to an extrusion block, and a second spring is provided between the extrusion block and the connecting frame, and a cam that acts on the extrusion block is provided on the rotating shaft below.

6. The glass fiber chopped material drying equipment according to claim 5, characterized in that: An adsorption magnetic block is provided at the lower end of the outer wall of the return zone, and the outer end of the limiting plug-in is provided with a magnet that acts on the adsorption magnetic block or is made of iron material.

7. The glass fiber chopped material drying equipment according to claim 4, characterized in that: The material holding hole disc is connected to the transmission component through an elastic steel plate connecting component, and a blocking bar that interacts with the opening and closing hole disc assembly is fixed to the upper end of the outer wall of the return zone.

8. The glass fiber chopped material drying equipment according to claim 1, characterized in that: The air extraction and filtering unit includes an air extraction pump, a drying and filtering box, and an air extraction pipe which are connected in sequence. The end of the air extraction pipe is connected to the top of the drying box.

9. The glass fiber chopped material drying equipment according to claim 1, characterized in that: The hot air unit includes a hot air source and a hot air pipe. One end of the hot air pipe is connected to the hot air source, and the other end is connected to a U-shaped air distribution pipe. The two ends of the air distribution pipe extend into the lower ends of the process area and the return area respectively, and a row of air outlets inclined upward are provided at both ends of the air distribution pipe.

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