A drying device for medical paper production

Abstract

This utility model relates to the field of raw paper production technology and discloses a drying device for medical raw paper production. It includes a box body with a door hinged to the front end. A pair of partitions are fixedly connected inside the box body, and a drying wire is fixedly connected to the upper end of each partition. A gap exists between the drying wire and the corresponding partition. An air distribution perforated plate is rotatably connected to the upper end of the drying wire inside the box body. The device also includes a transmission assembly installed on the left side inside the box body and a heating mechanism installed inside the box body to provide hot air to the interior. This utility model rectifyes the hot air through the air distribution perforated plate, allowing the airflow to penetrate the paper web with low turbulence and high verticality. This significantly improves the uniformity of wind speed and temperature in the width direction, reduces paper web vibration and tension fluctuations, thereby suppressing edge curling, bulging, and high-speed paper breakage, and improving the yield.

Description

Technical Field

[0001] This utility model relates to the field of paper production technology, and in particular to a drying device for the production of medical paper. Background Technology

[0002] Medical base paper is the core material for disposable sterile packaging. It must maintain dimensional stability and surface smoothness under conditions of low basis weight and high air permeability. Its drying process must remove water quickly while maintaining the wet strength of the fibers.

[0003] Currently, the industry generally adopts the top-blowing hot air box: hot air is blown vertically onto the wet paper web through an open slit or a simple grid, and drying is completed by relying on one-sided heat transfer; this solution has a simple structure and low investment, and has been widely used in large and medium-sized production lines.

[0004] However, the significant differences in the lateral wind speed distribution lead to uneven heating between the center and edges of the paper web; the lack of effective constraint on the paper web during high-speed operation makes it prone to shaking, wrinkling, or even paper breakage, which seriously restricts the release of production capacity and the improvement of yield. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a drying device for the production of medical base paper, so as to solve the problems of uneven heating between the center and edge of the paper web, and the lack of effective constraint of the paper web during high-speed operation, which easily leads to shaking, wrinkling or even paper breakage.

[0006] This utility model provides a drying device for medical paper production, comprising a housing, a door rotatably connected to the front end of the housing via a hinge, a pair of partitions fixedly connected inside the housing, a drying net fixedly connected to the upper end of each partition, a gap between the drying net and the corresponding partition, and an air distribution perforated plate rotatably connected to the upper end of the drying net inside the housing; further comprising:

[0007] A transmission assembly, which is installed on the left side inside the housing;

[0008] A heating mechanism is installed inside the housing and is used to provide hot air to the inside of the housing;

[0009] A locking mechanism is installed on the lower left side of the housing.

[0010] Preferably, a mounting block is fixedly connected to the lower end of the partition, and an air outlet pipe is fixedly connected to the side wall of the mounting block, with the end of the air outlet pipe extending to the outside of the right side of the box.

[0011] Preferably, the heating mechanism includes a fan and a heating box, both of which are fixedly connected to the upper part of the housing. The fan is located at the front of the heating box, and the air outlet of the fan is fixedly connected to the front end of the heating box via an air duct. A resistance heating grid is fixedly connected inside the heating box. A second air inlet pipe is fixedly connected to the rear right side of the heating box, with the end of the second air inlet pipe extending through to the upper part of the housing. A first air inlet pipe is fixedly connected to the rear left side of the heating box, with the end of the first air inlet pipe extending through to the middle of the housing.

[0012] Preferably, the transmission assembly includes a guide wheel and ropes. A pair of pins are fixed to the inner wall of the left end of the housing, and the two pins are respectively located above the corresponding air distribution plates. Two ropes are fixed to the rear end of the housing door, and the other end of each rope is connected to the upper end of the corresponding air distribution plate, and the middle part of the rope is wound around the groove of the corresponding guide wheel.

[0013] Preferably, the locking mechanism includes a pin and a spring, the rear end of the door has an installation groove, the pin is slidably connected inside the installation groove, the spring is fixedly connected to the upper end of the pin, the upper end of the spring is fixedly connected to the inner wall of the installation groove, and a handle is fixedly connected to the upper side wall of the pin.

[0014] Preferably, the locking mechanism further includes a fixing plate, which is fixedly connected to the front left side of the housing, and the upper surface of the fixing plate has an arc-shaped hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model rectifyes the hot air through a uniform airflow perforation plate, allowing the airflow to penetrate the paper web with low turbulence and high verticality, significantly improving the uniformity of wind speed and temperature in the width direction, reducing paper web shaking and tension fluctuations, thereby suppressing the occurrence of leaf edge bulging, high-speed paper breakage, and improving the yield.

[0017] 2. This utility model connects the box door to the upper front end of the air distribution plate via a rope. When the box door is opened, the rope simultaneously pulls the front end of the air distribution plate upward, increasing the gap between it and the dry wire, thus providing more operating space for paper web loading and unloading. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box body of this utility model;

[0020] Figure 3 This is a partial cross-sectional structural diagram of the partition of this utility model;

[0021] Figure 4This is a top view cross-sectional structural diagram of the heating box of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall right-side cross-sectional structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the overall left-side partial cross-sectional structure of this utility model;

[0024] Figure 7 This utility model Figure 6 Enlarged structural diagram of section A.

[0025] Numbering on the map:

[0026] 1. Housing; 11. Partition; 111. Mounting block; 112. Air outlet pipe; 12. Dry net; 121. Gap; 13. Air distribution plate; 2. Door; 21. Mounting slot; 3. Transmission assembly; 31. Pin; 32. Guide wheel; 33. Rope; 4. Heating mechanism; 41. Fan; 42. Heating box; 43. Resistance heating net; 44. First air inlet pipe; 45. Second air inlet pipe; 5. Locking mechanism; 51. Pin; 52. Spring; 53. Handle; 54. Fixing plate; 55. Arc-shaped hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-7 As shown, this utility model has the following three specific embodiments.

[0029] Example 1

[0030] A drying device for medical paper production includes a housing 1, with a door 2 hinged to the front end of the housing 1. A pair of partitions 11 are fixedly connected inside the housing 1, and a drying web 12 is fixedly connected to the upper end of each partition 11. A gap 121 is provided between the drying web 12 and the corresponding partition 11. An air distribution perforated plate 13 is provided on the upper end of the drying web 12 and is rotatably connected inside the housing 1. The device also includes:

[0031] Transmission assembly 3 is installed on the left side inside the housing 1;

[0032] Heating mechanism 4 is installed inside the housing 1 and is used to provide hot air inside the housing 1.

[0033] Locking mechanism 5 is installed on the lower left side inside the housing 1;

[0034] A mounting block 111 is fixedly connected to the lower end of the partition 11, and an air outlet pipe 112 is fixedly connected to the side wall of the mounting block 111. The end of the air outlet pipe 112 extends to the outside of the right side of the box 1.

[0035] The heating mechanism 4 includes a fan 41 and a heating box 42. Both the fan 41 and the heating box 42 are fixedly connected to the upper end of the housing 1. The fan 41 is located in front of the heating box 42. The air outlet of the fan 41 is fixedly connected to the front end of the heating box 42 through an air duct. A resistance heating mesh 43 is fixedly connected inside the heating box 42. A second air inlet pipe 45 is fixedly connected to the rear right side of the heating box 42. The end of the second air inlet pipe 45 extends through to the upper part of the housing 1. A first air inlet pipe 44 is fixedly connected to the rear left side of the heating box 42. The end of the first air inlet pipe 44 extends through to the middle position inside the housing 1.

[0036] In this embodiment, as Figures 1-4 As shown, the box door 2 is opened and temporarily fixed by the locking mechanism 5; while the box door 2 rotates, the transmission component 3 pulls the front end of the air distribution plate 13 upward, widening the distance between the air distribution plate 13 and the drying wire 12. Then, the paper web is laid flat on the surface of the drying wire 12, and the locking mechanism 5 is released to allow the box door 2 to return to its original position and close, thus restoring the air distribution plate 13 to its initial position; the fan 41 and the resistance heating grid 43 are started, and the hot air is evenly divided into two streams in the heating box 42: one stream is sent into the middle layer of the box 1 through the first air inlet pipe 44, and the other stream is sent into the upper layer of the box 1 through the second air inlet pipe 45; the two air streams are rectified by the air distribution plate 13 and pass vertically through the paper web, carrying away moisture, while the humid and hot exhaust gas flows into the exhaust pipe 112 through the gap 121 between the partition 11 and the drying wire 12 and is discharged outside the box, thereby achieving the effect of drying the paper web.

[0037] Example 2

[0038] The difference from Embodiment 1 is that this embodiment discloses the transmission assembly 3 inside the housing 1;

[0039] The transmission assembly 3 includes a guide wheel 32 and a rope 33. A pair of pins 31 are fixed on the inner wall of the left end of the housing 1. The two pins 31 are respectively located above the corresponding air distribution plate 13. Two ropes 33 are fixed at the rear end of the housing door 2. The other end of each rope 33 is connected to the upper end of the corresponding air distribution plate 13, and the middle part of the rope 33 is wrapped in the groove of the corresponding guide wheel 32.

[0040] In this embodiment, as Figure 5As shown, when the box door 2 opens outward, the two ropes 33 simultaneously pass around the guide wheel 32 fixed on the pin 31, smoothly pulling the front end of the air distribution plate 13 upward, forming an open gap 121, which facilitates paper threading; when the door closes, the ropes 33 loosen, and the air distribution plate 13 falls back under its own weight and maintains a suspended distance with the paper web, requiring no additional power throughout the process, thus realizing the linkage between the opening and closing of the door and the angle of the air distribution plate 13.

[0041] Example 3

[0042] The difference from Embodiment 2 is that this embodiment discloses a locking mechanism 5 for fixing the box door 2;

[0043] The locking mechanism 5 includes a pin 51 and a spring 52. The rear end of the door 2 is provided with a mounting groove 21. The pin 51 is slidably connected inside the mounting groove 21. The spring 52 is fixedly connected to the upper end of the pin 51. The upper end of the spring 52 is fixedly connected to the inner wall of the mounting groove 21. A handle 53 is fixedly connected to the upper side wall of the pin 51.

[0044] The locking mechanism 5 also includes a fixing plate 54, which is fixedly connected to the front left side of the housing 1. An arc-shaped hole 55 is provided on the upper surface of the fixing plate 54.

[0045] In this embodiment, as Figures 6-7 As shown, when the door is opened, the latch 51 automatically slides into the arc-shaped hole 55 of the fixing plate 54 under the push of the spring 52, and the door is locked to prevent the gravity of the air distribution plate 13 from driving the door 2 to rotate through the rope 33; when the door needs to be closed, simply lift the handle 53, the latch 51 compresses the spring 52 and disengages from the arc-shaped hole 55 to release the lock, thereby closing the door 2.

[0046] The working principle of this utility model is as follows:

[0047] Open the box door 2, and the two ropes 33 simultaneously pass around the guide wheel 32 fixed on the pin 31, smoothly pulling the front end of the air distribution plate 13 upward, forming an open gap 121 to facilitate the placement of the paper web; when the box door 2 is opened to a certain angle, the latch 51 automatically slides into the arc-shaped hole 55 of the fixing plate 54 under the push of the spring 52, and the door is locked to prevent the weight of the air distribution plate 13 from driving the box door 2 to rotate through the ropes 33; then place the paper web on the drying wire 12, and then lift the handle 53, the latch 51 compresses the spring 52. The lock can be released by disengaging from the arc-shaped hole 55, thereby closing the box door 2. Then, the fan 41 and the resistance heating mesh 43 are started. The hot air is evenly divided into two streams in the heating box 42: one stream is sent into the middle layer of the box 1 through the first air inlet pipe 44, and the other stream is sent into the upper layer of the box 1 through the second air inlet pipe 45. The two air streams are rectified by the air distribution plate 13 and then pass vertically through the paper web and carry away the moisture. The hot and humid exhaust gas is discharged out of the box through the air outlet pipe 112 through the gap 121 between the partition 11 and the dry mesh 12, thereby achieving the effect of drying the paper web.

[0048] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A drying apparatus for producing medical raw paper, comprising a housing (1), characterized in that, The front end of the box (1) is rotatably connected to a door (2) via a hinge. A partition (11) is fixedly connected inside the box (1). A pair of partitions (11) are provided. A dry net (12) is fixedly connected to the upper end of each partition (11). A gap (121) is provided between the dry net (12) and the corresponding partition (11). An air distribution perforated plate (13) is provided at the upper end of the dry net (12). The air distribution perforated plate (13) is rotatably connected inside the box (1). The box also includes: Transmission assembly (3), which is installed on the left side inside the housing (1); Heating mechanism (4), which is installed inside the housing (1), is used to provide hot air to the inside of the housing (1); Locking mechanism (5) is installed on the lower left side inside the housing (1).

2. The drying apparatus for producing medical base paper according to claim 1, characterized in that, The lower end of the partition (11) is fixedly connected to an installation block (111), and the side wall of the installation block (111) is fixedly connected to an air outlet pipe (112). The end of the air outlet pipe (112) extends through to the outside of the right side of the box body (1).

3. The drying apparatus for producing medical base paper according to claim 1, characterized in that, The heating mechanism (4) includes a fan (41) and a heating box (42). The fan (41) and the heating box (42) are both fixedly connected to the upper end of the box (1). The fan (41) is located in front of the heating box (42). The air outlet of the fan (41) is fixedly connected to the front end of the heating box (42) through a duct. A resistance heating mesh (43) is fixedly connected inside the heating box (42). A second air inlet pipe (45) is fixedly connected to the rear right side of the heating box (42). The end of the second air inlet pipe (45) extends through to the upper part of the box (1). A first air inlet pipe (44) is fixedly connected to the rear left side of the heating box (42). The end of the first air inlet pipe (44) extends through to the middle position inside the box (1).

4. The drying apparatus for producing medical base paper according to claim 1, characterized in that, The transmission assembly (3) includes a guide wheel (32) and a rope (33). A pair of pins (31) are fixed on the inner wall of the left end of the box (1), and the two pins (31) are respectively located above the corresponding air distribution plate (13). Two ropes (33) are fixed at the rear end of the box door (2). The other end of each rope (33) is connected to the upper end of the corresponding air distribution plate (13), and the middle part of the rope (33) is wrapped in the groove of the corresponding guide wheel (32).

5. The drying apparatus for producing medical base paper according to claim 1, characterized in that, The locking mechanism (5) includes a pin (51) and a spring (52). The rear end of the door (2) is provided with a mounting groove (21). The pin (51) is slidably connected inside the mounting groove (21). The spring (52) is fixedly connected to the upper end of the pin (51). The upper end of the spring (52) is fixedly connected to the inner wall of the mounting groove (21). A handle (53) is fixedly connected to the upper side wall of the pin (51).

6. The drying apparatus for producing medical base paper according to claim 1, characterized in that, The locking mechanism (5) also includes a fixing plate (54), which is fixedly connected to the front left side of the housing (1), and an arc-shaped hole (55) is provided on the upper surface of the fixing plate (54).

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