Intermittent drying equipment for ultra-fine fiber vacuum suction filtration

Abstract

The utility model discloses an intermittent drying equipment for superfine fiber vacuum filtration relates to the superfine fiber production field. An intermittent drying equipment for superfine fiber vacuum filtration, including drying jar, the upper end of drying jar is connected with the feeding pipe, the lower end of one side of drying jar is connected with the discharge pipe still includes: hollow shaft, vertical rotation connects in drying jar, the utility model discloses through control hollow shaft drives hollow stirring rod rotation, has increased the contact area of superfine fiber and the hollow stirring rod as heat source, and the contact is more even, makes the heat transfer more fully, compares traditional drying mode, has effectively improved the drying effect, through the intermittent start -stop of control heating element and air pump in heating jar, can the flexible control drying process, realizes intermittent drying, satisfies the drying demand of different superfine fiber, avoids the damage of fiber because of continuous drying, has guaranteed the fiber quality.

Description

Technical Field

[0001] This utility model belongs to the field of ultrafine fiber production technology, specifically, it relates to an intermittent drying device for vacuum filtration of ultrafine fibers. Background Technology

[0002] In the field of microfiber production, the drying process after vacuum filtration is crucial, as it directly affects the quality and production efficiency of microfiber. Currently, most drying equipment used for microfiber vacuum filtration on the market typically uses a jacket on the drying tank and heats water or heat transfer oil to achieve the drying operation.

[0003] In terms of drying effect, since jacket heating mainly conducts heat through the tank wall, the uniformity of heat transfer is poor. The contact area between the microfiber and the heat source in the drying tank is limited and uneven, resulting in some fibers being over-dried and some fibers being under-dried. This makes it impossible to guarantee the consistency of product quality and results in a high defect rate.

[0004] Furthermore, most traditional drying equipment can only perform continuous drying and cannot achieve intermittent drying according to the characteristics and drying requirements of different microfibers. For some microfibers that are sensitive to temperature and require special drying processes, continuous drying may damage the structure and performance of the fibers, affecting the quality and application range of the products. Therefore, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an intermittent drying device for vacuum filtration of ultrafine fibers that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: an intermittent drying device for vacuum filtration of ultrafine fibers, including a drying tank, a feeding pipe connected to the upper end of the drying tank, and a discharge pipe connected to the lower end of one side of the drying tank, further including: a hollow shaft, vertically rotatably connected inside the drying tank; multiple rows of hollow stirring rods, equidistantly fixedly connected to the hollow shaft and connected to the hollow shaft; a drive mechanism for controlling the rotation of the hollow shaft, installed on the drying tank; a heating tank, fixedly installed on one side of the drying tank by a bracket; a first air pipe and a second air pipe, symmetrically connected to the two ends of the heating tank; an air pump, fixedly installed at the upper end of the drying tank, with its suction end connected to the air outlet end of the first air pipe; the two ends of the hollow shaft extending out of the drying tank are respectively connected to the air inlet end of the second air pipe and the air outlet end of the air pump through rotary joints.

[0007] Furthermore, the driving mechanism includes a drive motor, a first sprocket, a second sprocket, and a chain. The drive motor is fixedly connected to one side of the drying tank, the first sprocket is fixedly connected to the output end of the drive motor, and the second sprocket is fixedly connected to the position where the hollow shaft extends out of the drying tank. The first sprocket and the second sprocket are connected by a chain.

[0008] To facilitate the slow rotation of the hollow shaft within the drying tank, extend the contact time between the microfiber and the hollow stirring rod, and improve the heating effect, the diameter of the second sprocket is further increased to be larger than that of the first sprocket.

[0009] To facilitate the rapid and efficient transfer of heat generated in the heating tank to the microfiber, the hollow stirring rod is further configured as a heat-conducting pipe.

[0010] To ensure the hollow stirring rod has excellent thermal conductivity and can withstand the mechanical stress generated during the stirring of ultrafine fibers without easily deforming or being damaged, the hollow stirring rod is made of a copper-zinc alloy tube.

[0011] To facilitate the smooth discharge of dried microfiber through the discharge pipe and ensure efficient discharge of microfiber, multiple scrapers are fixedly connected in a circular pattern on the hollow shaft at equal intervals. The scrapers slide against the inner wall and bottom of the drying tank.

[0012] To facilitate the rapid removal of moisture generated inside the microfiber from the drying tank, a vacuum operation can be performed inside the drying tank to lower the boiling point of the moisture in the microfiber and accelerate the evaporation rate. Furthermore, an air extraction pipe is connected to the upper end of the drying tank.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention controls the hollow shaft to drive the hollow stirring rod to rotate, which increases the contact area between the ultrafine fiber and the hollow stirring rod as a heat source, and the contact is more uniform, so that the heat transfer is more complete. Compared with the traditional drying method, the drying effect is effectively improved.

[0014] By controlling the heating elements inside the heating tank and the intermittent start and stop of the air pump, the drying process can be flexibly controlled to achieve intermittent drying, meet the drying needs of different microfibers, avoid fiber damage caused by continuous drying, and ensure fiber quality.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the internal structure of the drying tank of this utility model;

[0020] Figure 4 This is a cross-sectional view of the hollow shaft and hollow stirring rod of this utility model.

[0021] In the diagram: 1. Drying tank; 101. Feeding pipe; 102. Discharge pipe; 103. Air extraction pipe; 2. Hollow shaft; 201. Hollow stirring rod; 202. Rotary joint; 203. Scraper; 3. Drive motor; 301. First sprocket; 302. Second sprocket; 303. Chain; 4. Heating tank; 401. First air pipe; 402. Second air pipe; 403. Air pump. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figures 1-4 An intermittent drying device for vacuum filtration of ultrafine fibers includes a drying tank 1, with a feeding pipe 101 connected to the upper end of the drying tank 1 and a discharge pipe 102 connected to the lower end of one side of the drying tank 1. It also includes: a hollow shaft 2, vertically rotatably connected inside the drying tank 1; multiple rows of hollow stirring rods 201, equidistantly fixedly connected to and communicating with the hollow shaft 2; a drive mechanism for controlling the rotation of the hollow shaft 2, installed on the drying tank 1; a heating tank 4, fixedly installed on one side of the drying tank 1 via a bracket; a first air pipe 401 and a second air pipe 402, symmetrically connected to the two ends of the heating tank 4; an air pump 403, fixedly installed at the upper end of the drying tank 1, with its suction end connected to the air outlet end of the first air pipe 401; and the two ends of the hollow shaft 2 extending out of the drying tank 1, respectively connected to the air inlet end of the second air pipe 402 and the air outlet end of the air pump 403 via rotary joints 202.

[0025] The drive mechanism includes a drive motor 3, a first sprocket 301, a second sprocket 302, and a chain 303. The drive motor 3 is fixedly connected to one side of the drying tank 1. The first sprocket 301 is fixedly connected to the output end of the drive motor 3. The second sprocket 302 is fixedly connected to the position where the hollow shaft 2 extends out of the drying tank 1. The first sprocket 301 and the second sprocket 302 are connected by the chain 303.

[0026] When it is necessary to dry the ultrafine fibers that have undergone vacuum filtration, the ultrafine fibers can be conveyed into the drying tank 1 through the feeding pipe 101. Then, the heating element in the heating tank 4 can be activated to heat the air, and then the air pump 403 can be activated. The air pump 403 will then send the generated hot air through the first air pipe 401, through the rotary joint 202 into the hollow shaft 2, and then split to each hollow stirring rod 201, so that the hollow shaft 2 and the hollow stirring rod 201 are heated. Then the gas returns to the heating tank 4 through the second air pipe 402, forming a hot air circulation. This allows the hot air to circulate in the hollow shaft 2 and the hollow stirring rod 201, ensuring that the hollow shaft 2 and the hollow stirring rod 201 heat the ultrafine fibers. The effect is that while hot air circulates within the hollow shaft 2 and the hollow stirring rod 201, the drive motor 3 can be started, causing the drive motor 3 to rotate the first sprocket 301. Through the chain 303, the second sprocket 302 and the hollow shaft 2 rotate, which in turn drives the hollow stirring rod 201 to rotate. During the rotation, the hollow stirring rod 201 comes into full contact with the microfiber, transferring heat to the microfiber and achieving uniform drying. By controlling the start and stop of the heating element in the heating tank 4 and the intermittent operation of the air pump 403, the hot air is supplied intermittently. When the heating element and the air pump 403 are working, the hot air circulates to heat and dry the microfiber. When they stop working, the drying is paused, achieving intermittent drying.

[0027] The hollow shaft 2 drives the hollow stirring rod 201 to rotate, which increases the contact area between the microfiber and the hollow stirring rod 201, which serves as a heat source, and makes the contact more uniform, so that the heat transfer is more complete. Compared with the traditional drying method, it effectively improves the drying effect.

[0028] By controlling the intermittent start and stop of the heating element in the heating tank 4 and the air pump 403, the drying process can be flexibly controlled to achieve intermittent drying, meet the drying needs of different microfibers, avoid fiber damage caused by continuous drying, and ensure fiber quality.

[0029] Example 2:

[0030] Reference Figures 1-4 An intermittent drying device for vacuum filtration of ultrafine fibers is basically the same as that in Example 1, except that the diameter of the second sprocket 302 is larger than the diameter of the first sprocket 301.

[0031] In practical use, the diameter ratio of the second sprocket 302 to the first sprocket 301 can be set to 1:3 or 1:4. This reduces the rotational speed of the hollow shaft 2 when controlled by the drive motor 3, allowing the hollow shaft 2 to rotate slowly inside the drying tank 1. This not only prolongs the contact time between the microfiber and the hollow stirring rod 201 and improves the heating effect, but also prevents the microfiber from scattering inside the drying tank 1 due to the high rotational speed of the hollow stirring rod 201.

[0032] Example 3:

[0033] Reference Figures 1-4 An intermittent drying device for vacuum filtration of microfiber is basically the same as that in Example 2, but with a further improvement: the hollow stirring rod 201 is a heat-conducting pipe. By setting the hollow stirring rod 201 as a heat-conducting pipe, the hollow stirring rod 201 can have excellent thermal conductivity, which can quickly and efficiently transfer the heat generated in the heating tank 4 to the microfiber. Compared with ordinary materials, the heat conduction time can be greatly shortened, allowing the microfiber to absorb heat in a shorter time, accelerate moisture evaporation, and effectively improve drying efficiency.

[0034] The hollow stirring rod 201 is made of copper-zinc alloy. Because copper-zinc alloy has high thermal conductivity and strength, it not only gives the hollow stirring rod 201 excellent thermal conductivity, but also enables it to withstand the mechanical stress generated during the stirring of ultrafine fibers, making it less prone to deformation or damage.

[0035] Example 4:

[0036] Reference Figures 1-4 An intermittent drying device for vacuum filtration of ultrafine fibers is basically the same as that in Example 2, but with a further improvement: multiple scrapers 203 are fixedly connected in a circular pattern on the hollow shaft 2. The scrapers 203 slide against the inner wall and bottom of the drying tank 1. When the drying of ultrafine fibers is completed and the dried ultrafine fibers need to be discharged from the drying tank 1 through the discharge pipe 102, the valve on the discharge pipe 102 is opened first. Then, the hollow shaft 2 drives the scrapers 203 to rotate. The scrapers 203 can then guide the ultrafine fibers to the discharge pipe 102 so that the dried ultrafine fibers can be smoothly discharged through the discharge pipe 102, ensuring the discharge efficiency of ultrafine fibers.

[0037] The upper end of the drying tank 1 is connected to an exhaust pipe 103. During equipment installation, the exhaust pipe 103 is connected to an external suction assembly. When the equipment dries the ultrafine fibers after vacuum filtration, the external suction assembly can be activated to draw gas from inside the drying tank 1 through the exhaust pipe 103. This not only quickly removes the water vapor generated inside the ultrafine fibers from the drying tank 1, but also creates a vacuum inside the drying tank 1. This lowers the boiling point of the water in the ultrafine fibers, accelerates the evaporation rate of the water, and improves the drying efficiency. At the same time, the vacuum environment reduces the presence of oxygen, effectively reducing the oxidation of the fibers by oxygen, further protecting the quality of the fibers, and ensuring that the ultrafine fibers maintain good physical and chemical properties after drying.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. An intermittent drying device for vacuum filtration of ultrafine fibers, characterized in that, The equipment includes a drying tank (1), the upper end of which is connected to a feeding pipe (101), and the lower end of one side of the drying tank (1) is connected to a discharge pipe (102). It also includes: Hollow shaft (2) is vertically rotatably connected to the drying tank (1); Multiple rows of hollow stirring rods (201) are fixedly connected at equal intervals to the hollow shaft (2) and are in communication with the hollow shaft (2); A drive mechanism for controlling the rotation of the hollow shaft (2) is installed on the drying tank (1); The heating tank (4) is fixedly installed on one side of the drying tank (1) by a bracket; The first air pipe (401) and the second air pipe (402) are symmetrically connected to the two side ports of the heating tank (4); An air pump (403) is fixedly installed at the upper end of the drying tank (1), and its suction end is connected to the air outlet end of the first air pipe (401). The hollow shaft (2) extends out of the drying tank (1) and is connected to the air inlet of the second air pipe (402) and the air outlet of the air pump (403) respectively through a rotary joint (202).

2. The intermittent drying equipment for vacuum filtration of ultrafine fibers according to claim 1, characterized in that, The driving mechanism includes a drive motor (3), a first sprocket (301), a second sprocket (302), and a chain (303). The drive motor (3) is fixedly connected to one side of the drying tank (1). The first sprocket (301) is fixedly connected to the output end of the drive motor (3). The second sprocket (302) is fixedly connected to the hollow shaft (2) extending out of the drying tank (1). The first sprocket (301) and the second sprocket (302) are connected by the chain (303).

3. The intermittent drying equipment for vacuum filtration of ultrafine fibers according to claim 2, characterized in that, The diameter of the second sprocket (302) is larger than the diameter of the first sprocket (301).

4. An intermittent drying device for vacuum filtration of ultrafine fibers according to claim 1, characterized in that, The hollow stirring rod (201) is a heat-conducting pipe.

5. An intermittent drying device for vacuum filtration of ultrafine fibers according to claim 4, characterized in that, The hollow stirring rod (201) is a copper-zinc alloy tube.

6. An intermittent drying device for vacuum filtration of ultrafine fibers according to claim 1, characterized in that, Multiple scrapers (203) are fixedly connected in a circular pattern at equal intervals on the hollow shaft (2). The scrapers (203) slide against the inner wall and bottom of the drying tank (1).

7. An intermittent drying device for vacuum filtration of ultrafine fibers according to claim 1, characterized in that, The upper end of the drying tank (1) is connected to an air extraction pipe (103).

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