Glass fiber reinforced plastic pultrusion plate drying device

Abstract

A glass fiber reinforced plastic pultrusion plate drying device comprises a drying platform, a drying box is arranged on the drying platform, and a chain conveyor is arranged in the drying box. A plate placing frame is mounted on the chain conveyor, and the chain conveyor can drive the plate placing frame to penetrate through the feeding opening to move into the drying box; a heat exchanger is arranged at the bottom of the drying platform, an air outlet of the heat exchanger communicates with an air collecting pipe installed on the side face of the drying box through a connecting pipe, the air collecting pipe communicates with multiple sets of air outlet pipes in the drying box, and the multiple sets of air outlet pipes are arranged up and down relative to the plate containing frame. By means of the mode that the gas collecting pipes are combined with the gas outlet pipes, drying gas is blown out above and below the drying box, multiple positions of a plate can be dried at the same time, the situation that the plate is damaged due to local overheating of the plate is avoided, drying is more uniform, and the quality of the plate is improved. And in cooperation with the exhaust fan, dried moisture and moisture can be discharged out of the box body in time, and the drying time of the plates is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber plate processing, in particular to a glass fiber reinforced plastic pultruded plate drying device. Background Art

[0002] FRP pultruded sheet is a composite material made of glass fiber and resin. The production process adopts pultrusion technology. The production process requires glass fiber to be impregnated with resin, and then pre-impregnated and continuously pultruded. The resin usually uses thermosetting resin and needs to be cured at a certain temperature. During curing, due to the high temperature, the moisture in the sheet will gradually evaporate. If the moisture content is high, the curing speed will be slowed down, and even bubbles and deformation will occur, thereby affecting the quality and performance of the sheet. Therefore, the pultruded sheet needs to be dried before curing to dry the moisture in the sheet in advance. When the moisture evaporates, a drying device is used for drying. For example, Chinese patent publication number CN205425633U discloses a glass fiber drying device, which dries the glass fiber sleeve 3 through the electric heating wire 41 arranged at the bottom of the shell 11, which can achieve a certain drying effect. However, in fact, the electric heating wire 41 is only arranged at the bottom, and the drying effect is poor. The bottom end of the glass fiber sleeve dries faster, and the middle and upper ends dry slower. In addition, the bottom needs to be dried continuously, which will damage the performance of the fiber tube. In addition, the moisture dried out is not easy to be discharged from the shell, and the fiber tube will be repeatedly dried, and the drying speed is slow. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a drying device for a glass fiber reinforced plastic pultruded plate.

[0004] The technical solution of this utility model is as follows:

[0005] A glass fiber reinforced plastic pultruded plate drying device comprises a drying platform, and a drying box is arranged on the drying platform, a chain conveyor is arranged in the drying box, and the chain conveyor extends to the outside of the drying box;

[0006] A plate placing rack is installed on the chain conveyor, and the chain conveyor can drive the plate placing rack to move through the feed port into the drying box;

[0007] A heat exchanger is provided at the bottom of the drying platform, and the air outlet of the heat exchanger is connected to the air collecting pipe installed on the side of the drying box through a connecting pipe. The air collecting pipe is connected to multiple groups of air outlet pipes in the drying box, and the multiple groups of air outlet pipes are staggered up and down in the drying box.

[0008] The specific design of the gas collecting pipe is that the gas collecting pipe is set to be U-shaped, and the opening is facing the side away from the feed port. The upper end of the gas collecting pipe is higher than the upper end of the plate placing rack, and the lower end is lower than the lower end of the plate placing rack.

[0009] The designed number and connection positions of the air outlet pipes are as follows: the air outlet pipes are provided with two groups, and are respectively connected to the upper end and the lower end of the air collecting pipe.

[0010] In order to dry a larger area of ​​the plates on the plate placement rack, the two groups of air outlet pipes are staggered in the horizontal direction.

[0011] In order to expand the drying range and blow out the drying gas evenly, the two groups of air outlet pipes extend along the width direction of the drying platform toward the side away from the air collecting pipe, and the two groups of air outlet pipes are relatively provided with multiple air outlet holes.

[0012] In order to discharge the moisture in the drying box and the moisture produced by drying out of the box in time, an exhaust fan is arranged at the bottom of the drying platform, and the exhaust fan is connected to the inside of the drying box, and the air inlet of the exhaust fan is arranged close to the feed inlet.

[0013] In order to facilitate the fixing of the plates, the plate placing rack includes a bottom frame installed with the chain conveyor, and a plurality of vertical bars are installed on the bottom frame. The setting of the plurality of vertical bars can adapt to plates of different shapes, and a long plate can be clamped between the vertical bars, and a cylindrical plate can also be set on the outside of the vertical bars, thereby expanding the application range of the drying plates.

[0014] The partitions can be used to install vertical rods on the one hand, and the gaps between the partitions can be used to allow drying gas to pass through the bottom, thereby improving the fluidity of the gas and speeding up the drying of the board. A plurality of partitions are arranged at intervals in the middle part of the base frame, and a plurality of vertical rods are installed on the partitions.

[0015] In order to allow the gas blown out of the air outlet pipe at the bottom to directly act on the plate, the gaps between the partitions are arranged staggered with the pull rods of the chain conveyor in the vertical direction.

[0016] In order to facilitate the installation of the base frame and the chain conveyor, the base frame is connected to the pull rod through a fixing piece. The fixing piece includes a connecting block installed on the side of the base frame. An elastic clamping block is arranged at the bottom of the connecting block. The elastic clamping block is arc-shaped and can be clamped on the outside of the pull rod.

[0017] In order to prevent excessive moisture from condensing at the bottom of the box and to facilitate the discharge of the condensed moisture, a drain pipe is connected to the side of the drying box away from the feed inlet.

[0018] The beneficial effects of the utility model are as follows: the utility model is a glass fiber reinforced plastic pultruded plate drying device, firstly, by setting a drying box, a gas drying device is set inwardly in the drying direction, and the plate is transported to the drying box by a chain conveyor, so that the plate can be dried, which is convenient for subsequent plate curing and other processes; secondly, by setting a gas collecting pipe combined with an air outlet pipe, drying gas is blown out above and below the drying box, so that multiple positions of the plate can be dried at the same time, avoiding the situation where the plate is damaged by local overheating, making the drying more uniform, and cooperating with the exhaust fan to discharge the dried water and moisture out of the box in time, shortening the drying time of the plate, and finally, through the cooperation of the partition plate and the vertical rod in the bottom frame, pultruded plates of various shapes such as long strips and cylinders can be fixed, thereby expanding the application range of the drying device and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is the overall structural view of the drying device;

[0022] Figure 2 This is the internal view of the drying box;

[0023] Figure 3 for Figure 2 Top view;

[0024] Figure 4 It is a partial structural view of the drying device;

[0025] Figure 5 This is the enlarged view of point A;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Drying platform; 2. Drying box; 3. Chain conveyor; 31. Pull rod; 4. Plate placement rack; 41. Base frame; 42. Vertical rod; 43. Partition; 5. Feed inlet; 6. Heat exchanger; 7. Gas collecting pipe; 8. Exhaust pipe; 9. Exhaust hole; 10. Exhaust fan; 11. Air inlet; 12. Fixing parts; 121. Connecting block; 122. Elastic clamping block; 123. Pull rod; 13. Drain pipe. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0029] Example

[0030] As mentioned in the background technology, after the FRP sheet is pultruded, it is necessary to dry the sheet before the curing process, that is, to dry it, so as to dry the moisture in the sheet and improve the curing effect. The drying equipment is used for drying. Compared with the drying equipment in the patent, there are many defects. It is very easy to cause local damage to the bottom end of the sheet, affecting the quality of the sheet, and the drying speed of the bottom is slow. The dried water vapor and moisture still circulate in the drying box. There are some other drying equipment on the market. When using it, stacking the sheets in the drying box will also cause uneven drying. Therefore, the inventor has improved and innovated the existing drying equipment and designed a new drying device, which is explained in detail below with reference to the drawings.

[0031] This embodiment provides a drying device for glass fiber reinforced plastic pultruded sheet. Figure 1 and Figure 2 , including a drying platform 1, the drying platform 1 is provided with supporting legs at the bottom, a drying box 2 is provided on the drying platform 1, a feed port 5 and a discharge port are provided at the front and rear of the drying box 2 respectively, a detachable baffle is provided at the upper end, and curtains are provided at the feed port 5 and the discharge port to prevent dust from entering the box during the drying process. In order to transport the plate into the drying box 2, a chain conveyor 3 is provided in the drying box 2, and both ends of the chain conveyor 3 extend to the outside of the drying box 2, and both ends extend to the drying box 2 for convenient loading and unloading.

[0032] In this embodiment, in order to facilitate the stabilization of the plate, a plate placing rack 4 is installed on the chain conveyor 3, and the chain conveyor 3 can drive the plate placing rack 4 to pass through the feed port 5 and move into the drying box 2, and transport the plate out of the drying box 2 on the side of the discharge port. After the dried plate is unloaded, the plate placing rack 4 is transported in the reverse direction to the outside of the feed port 5. Specifically, the plate placing rack 4 includes a bottom frame 41 installed with the chain conveyor 3, and a plurality of vertical rods 42 are installed on the bottom frame 41, and a plurality of partitions 43 are arranged at intervals in the middle part of the bottom frame 41, and the plurality of vertical rods 42 Installed on the partition 43, since the fiberglass sheets have many shapes, including long strips and cylindrical shapes, the multiple vertical rods 42 in the design are installed on the partition 43 and are suitable for sheets of various shapes, because multiple vertical rods 42 are provided on each partition 43 and are aligned. For long strip sheets, multiple sheets can be placed between vertical rods 42 in different columns, and the sheets can be limited by the vertical rods 42 on both sides. For cylindrical sheets, multiple sheets can be respectively mounted on the outside of each vertical rod 42 to limit the cylindrical sheets, and the application range is wide.

[0033] In order to facilitate the installation and disassembly of the plate placement rack 4 and the chain conveyor 3, the base frame 41 is connected to the pull rod 31 through the fixing parts 12, and there are four groups of fixing parts 12, with two groups on each side of the base frame 41. The fixing parts 12 include a connecting block 121 installed on the side of the base frame 41, and the connecting block 121 can be installed on the side of the base frame 41 by fastening bolts 123. An elastic clamping block 122 is provided at the bottom of the connecting block 121, and the elastic clamping block 122 is arc-shaped and can be clamped on the outside of the pull rod 31. The setting of the elastic clamping block 122 can be quickly installed and disassembled with the pull rod 31.

[0034] On the basis of the above structure, a heat exchanger 6 is arranged at the bottom of the drying platform 1. Figure 2 and Figure 4 The heat exchanger 6 can provide drying hot air for the drying box 2. Specifically, the air outlet of the heat exchanger 6 is connected with the air collecting pipe 7 installed on the side of the drying box 2 through a connecting pipe. The air collecting pipe 7 is used to divert the hot air. A plurality of groups of air outlet pipes 8 are arranged in the drying box 2, and the plurality of groups of air outlet pipes 8 are all connected with the air collecting pipe 7. The air collecting pipe 7 is arranged in a U shape, and the opening is facing the side away from the feed port 5. In the vertical direction, the upper end of the air collecting pipe 7 is higher than the upper end of the plate placing rack 4, and the lower end is lower than the lower end of the plate placing rack 4. The purpose of the design is to meet the requirements of the multiple groups of air outlet pipes 8 being staggered in the drying box 2. In the present embodiment, there are two groups of air outlet pipes 8, which are respectively connected with the upper and lower ends of the air collecting pipe 7. Combined with the setting of the upper and lower ends of the air collecting pipe 7, it is ensured that when the drying work is carried out, the two groups of air outlet pipes 8 are respectively located at the upper and lower ends of the plate placing rack 4, and hot air can be blown out in different directions to evenly dry the plates on the plate placing rack 4.

[0035] And, combined with Figure 4 and Figure 5 In order to supply hot air to different positions of the plate placing rack 4 in the vertical direction, combined with Figure 3 The two groups of air outlet pipes 8 are staggered in the horizontal direction, and the two groups of air outlet pipes 8 extend along the width direction of the drying platform 1 toward the side away from the air collecting pipe 7 to expand the range of blowing out hot air, and the two groups of air outlet pipes 8 are relatively provided with multiple air outlet holes 9, that is, during drying work, the air outlet holes 9 are all facing one side of the plate placing rack 4, among which there are three air outlet pipes 8 at the upper end and two air collecting pipes 7 at the lower end, and the five air outlet pipes 8 are arranged sideways in the horizontal direction, and the maximum distance of the air collecting pipes 7 in the horizontal direction is not greater than the length of the plate placing rack 4 along the arrangement direction of the air outlet pipes 8, which ensures that when the plate placing rack 4 is transported to the position of the air outlet pipes 8, all the air outlet pipes 8 are within the range of the plate placing rack 4.

[0036] On the basis of the above structure, when performing drying work, the chain conveyor 3 transports the plate rack 4 carrying the plates to the area of ​​the two groups of air outlet pipes 8, and the lower air outlet pipe 8 is located between the upper and lower parallel chains of the chain conveyor 3. In order to ensure that the hot air from the lower air outlet pipe 8 can directly act on the plates, the gap between the partitions 43 is staggered with the pull rod 31 of the chain conveyor 3 in the vertical direction to ensure that the pull rod does not block the air attack, and when the chain conveyor 3 is controlled to transport the plate rack 4, the pull rod in the stop position is ensured to be staggered with the lower air outlet pipe 8, thereby ensuring that the hot air blown out of the air outlet 9 of the lower air outlet pipe 8 can act on the plates through the gap bracket, thereby accelerating the drying speed.

[0037] On the basis of the above structure, in order to discharge the moisture generated in the drying box 2 during drying out of the box in time, an exhaust fan 10 is arranged at the bottom of the drying platform 1, and the exhaust fan 10 is connected to the inside of the drying box 2. In this embodiment, two exhaust fans 10 are arranged, which are respectively located on both sides of the chain conveyor 3. In order to prevent the moisture from returning to the plate when the plate goes out of the discharge port, the discharge port is located on the opposite side of the feed port 5. The exhaust fan 10 is arranged on the side close to the feed port 5, that is, on the front side of the air outlet pipe 8, to ensure that the flow direction of moisture is opposite to the moving direction of the plate placement rack 4. In order to discharge the moisture condensed on the side wall and bottom of the drying box 2 out of the box, a drain pipe 13 is connected to the side of the drying box 2 away from the feed port 5, and the condensed water droplets can be discharged from the drying box 2 through the drain pipe 13. After the drying is completed, the plate is transported out of the discharge port for unloading, and then the chain conveyor 3 works in reverse to transport the plate placement rack 4 back to the outside of the loading port 5 for the next batch of plates to be shipped and dried.

Claims

1. A drying device for a glass fiber reinforced plastic pultruded sheet, comprising a drying platform (1), wherein a drying box (2) is arranged on the drying platform (1), characterized in that: A chain conveyor (3) is arranged inside the drying box (2), and both ends of the chain conveyor (3) extend outside the drying box (2); A plate placing rack (4) is installed on the chain conveyor (3), and a feed port (5) is provided on one side of the drying box (2). The chain conveyor (3) can drive the plate placing rack (4) to pass through the feed port (5) and move into the drying box (2); A heat exchanger (6) is provided at the bottom of the drying platform (1), and the air outlet of the heat exchanger (6) is connected to an air collecting pipe (7) installed on the side of the drying box (2) through a connecting pipe, and the air collecting pipe (7) is connected to multiple groups of air outlet pipes (8) in the drying box (2), and the multiple groups of air outlet pipes (8) are arranged up and down with respect to the plate placing rack (4).

2. The FRP pultruded sheet drying device according to claim 1, characterized in that: The gas collecting pipe (7) is configured to be U-shaped, and its opening faces the side away from the feed port (5); the upper end of the gas collecting pipe (7) is higher than the upper end of the plate placing rack (4), and the lower end is lower than the lower end of the plate placing rack (4).

3. The FRP pultruded sheet drying device according to claim 2, characterized in that: The air outlet pipes (8) are provided in two groups and are respectively connected to the upper end and the lower end of the air collecting pipe (7).

4. The FRP pultruded sheet drying device according to claim 3 is characterized in that: The two groups of air outlet pipes (8) extend along the width direction of the drying platform (1) toward a side away from the air collecting pipe (7), and the two groups of air outlet pipes (8) are provided with a plurality of air outlet holes (9) opposite to each other.

5. The FRP pultruded sheet drying device according to claim 1, characterized in that: An exhaust fan (10) is arranged at the bottom of the drying platform (1), and the exhaust fan (10) is connected to the inside of the drying box (2), and the air inlet (11) of the exhaust fan (10) is arranged close to the feed inlet (5).

6. The FRP pultruded sheet drying device according to claim 1, characterized in that: The plate placing rack (4) comprises a base frame (41) installed with the chain conveyor (3), and a plurality of vertical rods (42) are installed on the base frame (41).

7. The FRP pultruded sheet drying device according to claim 6, characterized in that: A plurality of partitions (43) are arranged at intervals in the middle portion of the base frame (41), and a plurality of vertical rods (42) are installed on the partitions (43).

8. The FRP pultruded sheet drying device according to claim 7, characterized in that: The gaps between the partitions (43) are arranged staggered with the pull rods (31) of the chain conveyor (3) in the vertical direction.

9. The FRP pultruded sheet drying device according to claim 6, characterized in that: The base frame is connected to the pull rod (31) via a fixing member (12), and the fixing member (12) comprises a connecting block (121) mounted on the side of the base frame (41), and an elastic clamping block (122) is arranged at the bottom of the connecting block (121), and the elastic clamping block (122) is arc-shaped and can be clamped on the outside of the pull rod (31).

10. The FRP pultruded sheet drying device according to claim 1, characterized in that: The side of the drying box (2) away from the feed inlet (5) is connected to a drainage pipe (13).

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