Melt-blowing die head stable in air outlet and adjustable in wind power

Abstract

The utility model relates to the technical field of melt-blowing die heads, in particular to a melt-blowing die head stable in air outlet and adjustable in wind power, which is reasonable in structural design and mainly comprises die head sectioning blocks, an outer clamping frame, sliding blocks, a screw rod, a rotary driver, a movable wind pipe and a fixed wind pipe. A rotary driver, a fixed air pipe and a movable air pipe arranged on the outer side of the fixed air pipe in a sleeving mode are additionally arranged in an air inlet channel of a die head sectioning block, air uniformizing holes in one-to-one correspondence in position are formed in pipe bodies of the fixed air pipe and the movable air pipe, and the rotary driver can drive the movable air pipe to rotate relative to the fixed air pipe, so that the air uniformizing holes of the fixed air pipe and the movable air pipe are staggered; and meanwhile, by means of the air outlet mode, the air outlet stability is high, and the fineness and strength of fibers can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to melt-blowing die technical field especially relates to a melt-blowing die that air outlet is stable and wind force can be adjusted. BACKGROUND

[0002] Melt-blowing die plays a vital role in the production process of melt-blown nonwoven fabric, and the wind force is one of the key factors affecting the quality and production efficiency of melt-blown fabric. The following analyzes the influence of wind force in melt-blowing die in detail: 1) Influence on fiber fineness: the size of wind force directly affects the fineness of melt-blown fiber. In the melt-blowing process, the heated stretching air is blown out from the air duct on both sides of the die jet hole at high speed, and the polymer melt stream is stretched. When the wind speed and wind volume increase, the stretching force on the fiber increases, resulting in a decrease in fiber diameter and a finer fiber. Fine fibers can increase the surface area of melt-blown fabric and improve its filtration efficiency and barrier performance. 2) Influence on fiber strength: the size of wind force also affects the strength of the fiber. With the increase of wind speed and wind volume, the fiber receives greater tension during stretching, which helps to orient the internal structure of the fiber, thereby improving the relative strength of the single fiber. The improvement of fiber strength helps to enhance the overall strength and service life of melt-blown fabric. 3) Influence on fiber web structure: the size of wind force also affects the structure of the fiber web. In the melt-blowing process, the fiber is stretched and deposited on the receiving device to form a fiber web. When the wind speed and wind volume are moderate, the fiber can be evenly distributed and form a tight fiber web structure. However, if the wind speed and wind volume are too large or too small, the fiber distribution will be uneven, affecting the uniformity and strength of the fiber web.

[0003] The existing melt-blowing die has the following deficiencies when in use: first, the wind force cannot be quickly adjusted, and the stability of the wind force is not ideal; second, the melt-blowing flow channel is not conducive to regular disassembly and cleaning. Therefore, it is necessary to optimize and improve the existing melt-blowing die. INVENTION CONTENTS

[0004] The utility model aims at overcoming the above problems existing in the prior art, and provides a melt-blowing die with stable air outlet and adjustable wind force.

[0005] To achieve the above technical purposes and effects, the utility model is implemented by the following technical solutions:

[0006] A melt-blowing die with stable air outlet and adjustable wind force, comprising a die split block, an outer clamping frame, a sliding block, a screw rod, a rotary drive, a movable air pipe and a fixed air pipe.

[0007] The die split block has two, and is connected as a whole through the outer clamping frame after abutting.

[0008] The outer side of the mold head segment block is provided with a clamping groove for easy installation of the outer clamping frame, and the upper side of the mold head segment block is provided with a sliding groove for easy installation of the slider. A screw for driving the slider to slide horizontally is installed in the mold head segment block.

[0009] A melt flow channel is installed on the inner side of the die head segment block. An air inlet channel and an air guide channel are opened inside the die head segment block. An air outlet channel is formed between the slider and the die head segment block. One end of the air inlet channel is open and the other end is closed. A rotary driver and a fixed air pipe located in the hollow area of ​​the air inlet channel are installed at the closed end of the air inlet channel. A movable air pipe sleeved on the outside of the fixed air pipe is installed on the movable part of the rotary driver.

[0010] The fixed air duct and the movable air duct each have corresponding air distribution holes on their bodies.

[0011] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, one end of the screw is provided with a rotating head whose rotation is restricted in the slider, and the other end is provided with a rotating handle; the die head segment block is provided with a screw groove that cooperates with the screw.

[0012] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, the melt flow channel is divided into at least three gradually decreasing sizes: a main flow channel, an intermediate flow channel, and a drain flow channel.

[0013] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, the air inlet duct is connected to the air outlet duct via the air guide duct, and the air outlet duct is connected to the drain duct of the melt flow channel.

[0014] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, the lengths of the movable air duct and the fixed air duct are each equal to the depth of the air inlet duct, and the inner diameter of the movable air duct is equal to the outer diameter of the fixed air duct.

[0015] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable air force, the constant air duct is connected to a Roots blower capable of providing a high-speed hot airflow, and the opening of the air inlet is equipped with an annular cover for covering the outer area of ​​the constant air duct.

[0016] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, the air distribution holes of the movable air duct and the fixed air duct are strip-shaped holes, the length direction of the strip-shaped holes is parallel to the axial direction of the pipe body, and the specifications of the strip-shaped holes are 0.4-0.8cm wide × 0.8-1.6cm long.

[0017] Furthermore, in the aforementioned meltblown die head with stable airflow and adjustable airflow, the movable air duct and the fixed air duct are made of stainless steel.

[0018] The beneficial effects of this utility model are:

[0019] This utility model has a reasonable structural design, mainly consisting of a die head segment block, an outer clamping frame, a slider, a screw, a rotary driver, a movable air duct, and a fixed air duct. By adding a rotary driver, a fixed air duct, and a movable air duct sleeved on the outside of the fixed air duct in the air inlet channel of the die head segment block, the fixed air duct and the movable air duct each have corresponding air distribution holes. The rotary driver can drive the movable air duct to rotate relative to the fixed air duct, causing the air distribution holes of the two to be misaligned, thereby realizing the adjustment of the air output force. At the same time, this air output method makes the air output more stable, which is conducive to ensuring the fineness and strength of the fiber.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the mold head segment block and its components in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the mold head segment block in this utility model;

[0025] Figure 4 This is a schematic diagram of the slider and screw in this utility model;

[0026] Figure 5 This is a schematic diagram of the rotary drive in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the movable air duct and the fixed air duct in this utility model;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1-Die head segment block, 2-Outer clamping frame, 3-Slider, 4-Screw, 5-Rotary drive, 6-Moving air duct, 7-Fixed air duct, 8-Clamping groove, 9-Slide groove, 10-Main flow channel, 11-Intermediate flow channel, 12-Drainage flow channel, 13-Air inlet channel, 14-Air guide channel, 15-Air outlet channel. Detailed Implementation

[0030] 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.

[0031] like Figures 1-6 As shown, this embodiment provides a meltblown die head with stable airflow and adjustable airflow, including a die head segment block 1, an outer clamping frame 2, a slider 3, a screw 4, a rotary driver 5, a movable air duct 6, and a fixed air duct 7.

[0032] In this embodiment, there are two mold head segment blocks 1, which are connected as one unit after docking by an outer clamping frame 2; a clamping groove 8 is provided on the outer side of the mold head segment block 1 to facilitate the installation of the outer clamping frame 2. In order to ensure the docking accuracy of the two mold head segment blocks 1, a positioning protrusion can be provided on the docking surface of one mold head segment block 1, and a positioning groove can be provided on the docking surface of the other mold head segment block 1.

[0033] In this embodiment, a groove 9 is provided on the upper side of the die head segment block 1 to facilitate the installation of the slider 3. A screw 4 for driving the slider 3 to slide horizontally is installed in the die head segment block 1. One end of the screw 4 is provided with a rotating head that restricts rotation in the slider 3, and the other end is provided with a rotating handle; a screw groove that cooperates with the screw 4 is provided in the die head segment block 1.

[0034] In this embodiment, a melt flow channel is installed on the inner side of the die head segment block 1. The melt flow channel is divided into at least a main flow channel 10, an intermediate flow channel 11 and a drain flow channel 12, which are gradually reduced in size.

[0035] In this embodiment, an air inlet channel 13 and an air guide channel 14 are provided inside the die head segment block 1, and an air outlet channel 15 is formed between the slider 3 and the die head segment block 1. The air inlet channel 13 is connected to the air outlet channel 15 via the air guide channel 14, and the air outlet channel 15 is connected to the liquid drainage channel 12 of the melt flow channel.

[0036] In this embodiment, one end of the air inlet duct 13 is open and the other end is closed; a rotary drive 6 and a fixed air duct 7 located in the hollow area of ​​the air inlet duct 13 are installed at the closed end of the air inlet duct 13, and a movable air duct 6 sleeved on the outside of the fixed air duct 7 is installed on the movable part of the rotary drive 6.

[0037] In this embodiment, the fixed air duct 7 and the movable air duct 6 each have corresponding air distribution holes on their bodies. The length of the movable air duct 6 and the fixed air duct 7 is equal to the depth of the air inlet duct, and the inner diameter of the movable air duct 6 is equal to the outer diameter of the fixed air duct 7.

[0038] In this embodiment, a Roots blower capable of providing a high-speed hot airflow is connected to the outside of the constant air duct 7, and an annular cover for covering the outer area of ​​the constant air duct 7 is installed at the opening of the air inlet duct 13.

[0039] In this embodiment, the air distribution holes of the movable air duct 6 and the fixed air duct 7 are strip-shaped holes. The length direction of the strip-shaped hole is parallel to the axial direction of the pipe body. The specifications of the strip-shaped hole are 0.4-0.8cm wide × 0.8-1.6cm long.

[0040] In this embodiment, the movable air duct 6 and the fixed air duct 7 are made of stainless steel.

[0041] A specific application of this embodiment is as follows: This meltblown die head mainly consists of a die head segment block 1, an outer clamping frame 2, a slider 3, a screw 4, a rotary driver 5, a movable air duct 6, and a fixed air duct 7. By adding a rotary driver 5, a fixed air duct 7, and a movable air duct 6 sleeved on the outside of the fixed air duct 7 to the air inlet duct 13 of the die head segment block 1, the fixed air duct 7 and the movable air duct 6 each have air distribution holes with corresponding positions on their tube bodies. The rotary driver 5 can drive the movable air duct 6 to rotate relative to the fixed air duct 7, causing the air distribution holes of the two to be misaligned, thereby realizing the adjustment of the air output force. At the same time, this air output method makes the air output more stable, which is conducive to ensuring the fineness and strength of the fiber.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A meltblown die head with stable airflow and adjustable airflow, characterized in that: It includes a mold head segment block, an outer clamping frame, a slider, a screw, a rotary drive, a movable air duct, and a fixed air duct; The mold head segmented blocks consist of two parts, which are connected as one unit by an outer clamping frame after docking. The outer side of the mold head segment block is provided with a clamping groove for easy installation of the outer clamping frame, and the upper side of the mold head segment block is provided with a sliding groove for easy installation of the slider. A screw for driving the slider to slide horizontally is installed in the mold head segment block. A melt flow channel is installed on the inner side of the die head segment block. An air inlet channel and an air guide channel are opened inside the die head segment block. An air outlet channel is formed between the slider and the die head segment block. One end of the air inlet channel is open and the other end is closed. A rotary driver and a fixed air pipe located in the hollow area of ​​the air inlet channel are installed at the closed end of the air inlet channel. A movable air pipe sleeved on the outside of the fixed air pipe is installed on the movable part of the rotary driver. The fixed air duct and the movable air duct each have corresponding air distribution holes on their bodies.

2. The meltblown die head with stable airflow and adjustable airflow according to claim 1, characterized in that: One end of the screw is provided with a rotating head that restricts rotation in the slider, and the other end is provided with a rotating handle; the die head segment block is provided with a screw groove that mates with the screw.

3. The meltblown die head with stable airflow and adjustable airflow according to claim 2, characterized in that: The melt flow channel is divided into at least three gradually decreasing sizes: the main flow channel, the intermediate flow channel, and the drain flow channel.

4. The meltblown die head with stable airflow and adjustable airflow according to claim 3, characterized in that: The air inlet duct is connected to the air outlet duct via the air guide duct, and the air outlet duct is connected to the liquid drainage duct of the molten flow channel.

5. The meltblown die head with stable airflow and adjustable airflow according to claim 4, characterized in that: The lengths of the movable duct and the fixed duct are equal to the depth of the air inlet, and the inner diameter of the movable duct is equal to the outer diameter of the fixed duct.

6. The meltblown die head with stable airflow and adjustable airflow according to claim 1, characterized in that: The stator is connected to a Roots blower that can provide a high-speed hot airflow, and an annular cover is installed at the opening of the air inlet to cover the outer area of ​​the stator.

7. The meltblown die head with stable airflow and adjustable airflow according to claim 1, characterized in that: The air distribution holes of the movable air duct and the fixed air duct are strip-shaped holes, with the length of the strip-shaped hole parallel to the axis of the duct body. The dimensions of the strip-shaped hole are 0.4-0.8cm wide and 0.8-1.6cm long.

8. The meltblown die head with stable airflow and adjustable airflow according to claim 1, characterized in that: The movable and fixed air ducts are made of stainless steel.

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