CN111001226A

CN111001226A - Method for filling fiber material in tubular object

Info

Publication number: CN111001226A
Application number: CN201811165073.0A
Authority: CN
Inventors: 周小参; 张振
Original assignee: Jiaxing Kai Kai Coating Technology Co ltd
Current assignee: Jiaxing Kai Kai Coating Technology Co ltd
Priority date: 2018-10-07
Filing date: 2018-10-07
Publication date: 2020-04-14
Anticipated expiration: 2038-10-07
Also published as: CN111001226B

Abstract

The invention relates to a processing and manufacturing method of a filtering interception column in a dry paint mist trapping box, in particular to a method for filling fiber materials in a tubular object. The method comprises the steps of generating a pressure difference in the tubular object by means of a filling device, flowing air in the tubular object under the action of the pressure difference, and drawing and filling the fiber material in the tubular object by utilizing the flowing air. The filling device used in the method sequentially comprises a filling chamber, a corrugated pipe and a negative pressure generating device, wherein the pressure difference is generated by the negative pressure generating device and is transmitted to the filling chamber by the corrugated pipe. Compared with the prior art, the invention has the advantages of high filling speed, low energy consumption and uniform filling of the fiber material in the tubular object.

Description

Method for filling fiber material in tubular object

Technical Field

The invention relates to processing and manufacturing of a filtering interception column in a dry paint mist trapping box, in particular to a method for filling a fiber material in a tubular object.

Background

The prior art uses hooks to hook one end of the fibrous material and pull the fibrous material to allow the fibrous material to enter and fill the tubular. Because the diameter of the fiber yarn of the fiber material is very small and the fiber material is very fluffy, the fiber yarn at the part hooked by the hook is easy to break or fall off, and in addition, the tubular object is in a slender shape, the traction resistance is high, and even if the tubular object is carefully and slowly drawn, the unhooking phenomenon is easy to occur. Figures 1 and 2 show a prior art method of pulling a fill fiber material in a tube by hooking with hooks.

In the prior art, the fiber material is pushed to enter and fill the tubular object by blowing compressed air from the rear part, but the technology has the disadvantages of high consumption of compressed air, high energy consumption, concentrated acting force of the compressed air and uneven filling of the fiber material.

Disclosure of Invention

The object of the present invention is to overcome the above-mentioned drawbacks of the prior art methods by providing a method for filling a tubular object with a fibrous material.

The purpose of the invention can be realized by the following technical scheme:

a method of filling a tubular with a fibrous material, characterized by: a pressure difference is generated in the tube by means of the filling device, air flows in the tube under the action of the pressure difference, and the flowing air is used for filling the fiber material in the tube.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the filling device 200 comprises a filling chamber 100, a bellows 110 and a negative pressure generating device 120 in sequence, and the pressure difference is generated by the negative pressure generating device 120 and is transmitted to the filling chamber 100 through the bellows 110.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the negative pressure generating device 120 is a fan.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the tubular object is slender, and the ratio of the length of the tubular object to the pipe diameter is greater than 3: 1.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the pipe wall of the tubular object is of a net structure.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the cross-sectional shape of the tube is diamond-shaped.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the cross-sectional shape of the tube is circular.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the fiber material is a glass fiber material.

Further, a method of filling a tubular object with a fibrous material may also have the following features: the fiber material is chemical fiber material.

Compared with the prior art, the invention has the following beneficial effects:

the method for filling the fiber material in the tubular object perfectly solves the problems that acting force is concentrated in the process that the hook hooks the fiber material in the prior filling technology, fiber yarns forming the fiber material are easy to break or scatter, the hook hooks are taken off, and production efficiency is low.

The method for filling the fiber material in the tubular object provided by the invention utilizes the friction force generated by the relative motion of the flowing air and the fiber yarns to push the fiber material to advance, the pushing force acts on each fiber yarn, the acting force is uniform, the fiber material can be pushed to enter and fill the tubular object at a higher speed, the filling speed is high, and the fiber material is uniformly distributed in the tubular object.

Compared with the technique of compressed air pushing, the method for filling the fiber material in the tubular object provided by the invention has low energy consumption, and the fiber material is uniformly filled in the tubular object.

Brief description of the drawings and detailed description

Embodiments of the invention are further explained below with reference to the drawings. In the drawings:

FIG. 1 is a prior art method of pulling and filling a fibrous material in a cylinder using hooks;

FIG. 2 is an enlarged view of a portion I of FIG. 1, showing more clearly the manner in which the hooks engage the fibrous material;

FIG. 3 is a schematic perspective view of a filling device by means of which the method of filling a tubular object with fibrous material is carried out;

FIG. 4 is a schematic view of a filling process of the filling device in which the fibrous material has partially entered the cylinder;

FIG. 5 is a partial enlarged view of section II of FIG. 4;

FIG. 6 is a partially cut-away perspective view of the filling process of the filling device;

FIG. 7 is a schematic perspective view of a cartridge;

FIG. 8 is a schematic perspective view of a fibrous material;

FIG. 9 is a schematic view, partly in section, of the fibrous material being filled into position during filling by the filling device;

FIG. 10 is a filter trap column with completed packing;

reference is first made to fig. 3. In fig. 3, a filling device by means of which a method of filling a tubular with a fibre material is indicated generally by 200, the filling device 200 comprising a negative pressure generating device, a bellows 110 and a filling chamber 100. The negative pressure generating device may be a blower, a vacuum pump, etc., and is preferably the blower 120.

The suction opening 122 of the blower 120 is connected to the bellows 110, and the exhaust opening 121 is connected to an exhaust duct (the exhaust duct is not shown).

The filling chamber 100 is a cavity structure with two open ends, and the cavity is defined by the chamber walls 60. The filling chamber 100 has one end connected to the bellows 110 and the other end provided with a bell-mouth shaped air inlet 63 having a guide surface 62. The root of the guide surface 62 is provided with a plurality of rows of intake holes 65.

The filling chamber 100 is provided with a filtering baffle 90 and a positioning pin 61, and the filtering baffle 90 is used for limiting the tubular object and the fiber material 10 which are loaded into the filling chamber 100 for filling operation. The locating pin 61 serves to position the filtering baffle 90, and the structural shape of the filtering baffle 90 and its positioning relationship to the tubular object are more clearly shown in the partial cross-sectional views of fig. 6 and 9. The filtering baffle also has the function of filtering and intercepting the fiber yarns scattered by the fiber material 10, so that a large number of fiber yarns are prevented from entering the fan 120, and the function of protecting the fan is achieved.

The tubular object of the present embodiment is a mesh tube 80, that is, the tube wall of the tubular object is a mesh structure, and fig. 7 shows the structure of the mesh tube 80 of the present embodiment. The material of the mesh tube 80 may be metal, plastic, cardboard, etc., preferably plastic. The cross-sectional shape of the mesh tube 80 may be circular, square, diamond, etc. The mesh tube 80 is slender, i.e. the ratio of the length of the mesh tube to the tube diameter is relatively large, the ratio of the length of the mesh tube to the tube diameter is generally larger than 3, and the resistance of the fiber material entering the mesh tube is relatively large.

The inner diameter of the cavity of the filling chamber 100 is slightly larger than the outer diameter of the mesh tube 80, and when the mesh tube 80 is loaded into the filling chamber 100, the gap between the cavity wall of the filling chamber 100 and the mesh tube is preferably not larger than 3 mm.

The blower 120 is used to generate a negative pressure at the suction opening 122, so that there is a pressure difference between the air in the bellows 110 and the filling chamber 100 connected thereto, and the flow of the air in the bellows 110 and the filling chamber 100 connected thereto is pushed by the pressure difference.

The fan 120 is controlled by frequency conversion, and the flow speed of air in the filling chamber 100 can be adjusted as required to meet the requirements of different working conditions.

Fig. 4 shows the positional relationship of the filling device 200, the mesh tube 80, and the fibrous material 10 during filling. Fig. 5 is a partially enlarged view of a portion II of fig. 4, fig. 6 is a partially sectional view of the filling chamber 100, and fig. 5 and 6 more clearly show the positional relationship of the filling chamber 100, the mesh tube 80, and the fibrous material 10 during the filling process.

Fig. 8 shows a schematic structural view of a fibrous material 10, wherein the fibrous material 10 is composed of fine fiber filaments, and the fine fiber filaments can be bonded together by glue or connected together in a criss-cross manner to form a very bulky fibrous material 10. The outer dimension of the fiber material 10 is close to the inner hollow dimension of the mesh tube 80, and the outer dimension of the fiber material 10 of the embodiment is a rhombic column. The fiber filaments can be glass fiber filaments, chemical fiber filaments, palm fiber filaments and the like, the glass fiber filaments and the chemical fiber filaments with the filament diameter of less than 100 micrometers are preferably selected, and the fiber material 10 consisting of the thinner fiber filaments has larger porosity and larger specific surface area, and has larger holding capacity for paint mist and better separation effect.

The filling process and the filling method are as follows:

the blower 120 is started, and under the action of the blower 120, a negative pressure is generated at the suction opening 122, and the existence of the negative pressure causes the air in the bellows 110 and the filling chamber 100 to flow from the high pressure direction to the low pressure direction, i.e. the air is sucked from the air inlet 63 of the filling chamber, flows to the blower through the filling chamber 100 and the bellows 110, and is then discharged from the air outlet 121 of the blower 120 to enter an air discharge pipe, not shown.

The mesh tube 80 is loaded into the filling chamber through the air inlet 63 of the filling chamber 100, the periphery of the mesh tube 80 is limited by the chamber wall 60 of the filling chamber, and the rear end is limited by the filtering baffle 90. The mesh tube 80 pushed into the filling position has one end in contact with the filtering baffle 90 and the other end flush with the end of the guide plate 62.

One end of the fiber material 10 is placed into the air inlet 63 of the filling chamber, i.e. one end of the mesh tube 80, and the fiber material 10 is sucked into the mesh tube 80 under the action of the air flow. With the increase of the depth of the fiber material 10 entering the mesh tube 80, the frictional resistance between the mesh tube 80 and the fiber material is increased, and at the same time, more fiber filaments are pushed by the frictional force of the advancing airflow, i.e. the pushing force of the flowing air to the fiber material 10 is also increased, the fiber material 10 continuously enters the mesh tube 80 until one end of the fiber material 10 is stopped due to the blocking of the filtering baffle 90, and the fiber material 10 is uniformly filled into the mesh tube 80. The partial cross-sectional view of fig. 9 more clearly shows the state when the fibrous material 10 has fully entered the mesh tube 80. The entire mesh tube filled with the fiber material 10 is taken out from the filling chamber 100, and the process of filling the mesh tube 80 with the fiber material 10 is completed. The mesh tube filled with the fiber material 10 is a part of a dry paint mist collecting box for collecting and intercepting paint mist generated during spraying, the fiber material 10 and the mesh tube 80 are defined as a filter interception column, and fig. 10 shows the filter interception column 11 after filling.

The air inlet holes 65 are used for applying a certain acting force to the fiber material entering the mesh tube 80 from the periphery at the position of the air inlet 63, so that the fiber yarns at the position of the air inlet 63 tend to shrink towards the center of the cross section of the fiber material 10, and the fiber material 10 can enter the mesh tube 80 more smoothly.

The above embodiments are merely illustrative of the principles and utilities of the present patent and are not intended to limit the present patent. Those skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present disclosure be covered by the claims of this patent.

Claims

1. A method of filling a tubular article (80) with a fibrous material (10), characterized by: the filling device (200) is used to generate a pressure difference for the air in the tube (80), the air flows in the tube (80) under the action of the pressure difference, and the flowing air is used to fill the fiber material (10) in the tube (80).

2. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the filling device (200) comprises a filling chamber (100), a corrugated pipe (110) and a negative pressure generating device (120) in sequence, and the pressure difference is generated by the negative pressure generating device (120) and is transmitted to the filling chamber (100) by the corrugated pipe (110).

3. A method of filling a tubular object (80) with a fibrous material (10) according to claim 2, characterized in that: the negative pressure generating device (120) is a fan.

4. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the tubular object (80) is slender, and the ratio of the length of the tubular object to the pipe diameter is greater than 3: 1.

5. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the pipe wall of the tubular object (80) is of a net structure.

6. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the cross-sectional shape of the tube (80) is diamond-shaped.

7. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the cross-sectional shape of the tube (80) is circular.

8. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the fiber material (10) is a glass fiber material.

9. A method of filling a tubular object (80) with a fibrous material (10) according to claim 1, characterized in that: the fiber material (10) is a chemical fiber material.