Oil injection device and method for wool spinning sliver mixing machine

Abstract

The invention relates to an oil injection device and method for a wool spinning mixing machine. The oil injection device comprises a conveying device, a pipe body, a spray head, an electrode device and a web charge management device. The conveying device comprises two pairs of conveying rollers for conveying wool fiber webs; the pipe body is arranged above the upstream of the wool fiber net; the nozzle is connected with the lower end of the pipe body; an oil spraying hole is formed in the bottom of the nozzle; the electrode device comprises a high-voltage power source and two charged electrodes, the two charged electrodes are located below the spray head and symmetrically arranged on the two sides of the oil spraying hole, the spray head is connected with the grounding end of the high-voltage power source and serves as one electrode of a charged electric field, and the two charged electrodes are connected into the high-voltage power source and serve as the other electrode of the charged electric field; the web charge management device comprises two ion fans which are arranged on the upper side and the lower side of the downstream of the wool fiber web. Through the arrangement of the electrode device and the web charge management device, the wool oil emulsion is uniformly sprayed, the spraying efficiency is high, and the binding force with wool fibers is high.

Description

Technical Field

[0001] This invention belongs to the field of spinning and processing technology, and in particular relates to an oil spraying device and method for a wool blending machine. Background Technology

[0002] Wool fiber, a common natural fiber, is soft and comfortable to the touch, with bright and vibrant colors, and excellent moisture absorption and elasticity. Wool garments are comfortable, lightweight, and offer excellent warmth, making them especially popular in the cold winters of northern regions. However, because the cystine-rich scale layer on the surface of wool fibers has high insulation properties, the static charge generated by friction is difficult to dissipate naturally. During the mechanical carding process of wool fibers, the high-speed friction between the fibers themselves and metal parts such as the carding cloth and rollers causes the accumulation of static charge on the fiber surface, leading to a significant electrostatic effect. This electrostatic phenomenon can cause multiple negative effects, damaging the wool fibers and making processing difficult.

[0003] To address the aforementioned issues, the current mainstream approach is to appropriately add some wool blending oil emulsion during wool sliver combing, which can reduce damage to wool fibers during spinning and improve spinning efficiency. Chinese invention patent "Nozzle Structure for Wool Blending Machine," patent application number CN201620133283.1, discloses a nozzle structure for a wool blending machine. This nozzle structure includes an oil pipe, a central pipe placed within the oil pipe, and several mixing chambers. A gap for wool blending oil transmission is provided between the oil pipe and the central pipe. Compressed air is introduced into the central pipe. The mixing chambers are connected to the gap between the oil pipe and the central pipe, as well as to the central pipe itself. However, due to the high speed of the two-fluid spray, some oil mist diffuses around the wool web, causing some wool blending oil loss and equipment corrosion. To address the aforementioned problems, the paper "Research and Development of Domestic Needle Combing Machine and Wool Oil Sprayer and Its System Improvement" (Zuo Fengjiu, Wool Textile Technology, Issue 1, 2003) proposed a new type of wool oil sprayer and improved its system to a relatively ideal degree. A new type of wool oil sprayer with a semi-annular transverse three-nozzle evenly distributed design was created, which allows the oil mist to fall back onto the wool mesh on the tray after dispersion, reducing the waste of wool oil emulsion. However, the problems of uneven spraying and low spraying efficiency of wool oil emulsion have not yet been solved. In addition, the Chinese invention patent "A GN6 sliver mixing machine for additional oiling and auxiliary device for raw material moisture regain", patent application number CN202222754796.2, proposes to add a fiber diversion mechanism after the fiber guiding mechanism to solve problems such as uneven oiling and waste of crude oil. The fiber guiding mechanism has a diversion auxiliary mechanism in the middle of its top surface, and one end of the diversion auxiliary mechanism is connected to a merging oiling mechanism. After the upper and lower fiber slivers are processed by the oiling device, the two groups of fibers are merged by the slope design of the ramp frame. This may improve the moisture regain of the fiber slivers, but there is still room for improvement in the uniformity of spraying and the spraying efficiency.

[0004] To address the problems of uneven spraying and low spraying efficiency of wool oil emulsion, this invention proposes an oil spraying device and method for a wool blending machine. Summary of the Invention

[0005] The main objective of this invention is to provide an oil spraying device and method for a wool blending machine, which can effectively solve the technical problems of uneven spraying and low spraying efficiency of wool oil emulsion.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An oil spraying device for a wool blending machine includes a conveying device, a pipe body, a nozzle, an electrode device, and a wool web charge management device.

[0008] The conveying device includes two pairs of conveying rollers for conveying wool fiber webs, and the wool fiber webs are divided into upstream and downstream sections between the two pairs of conveying rollers according to the conveying direction.

[0009] The tube body is located above the upper part of the wool fiber web. The tube body has an oil inlet channel and an air inlet channel. The upper end of the air inlet channel is connected to an air compressor via a rubber hose. The upper end of the oil inlet channel is connected to a wool oil storage device on a wool blending machine via a rubber hose.

[0010] The nozzle is connected to the lower end of the pipe body, and the bottom of the nozzle has an oil injection hole;

[0011] The electrode device includes a high-voltage power supply and two charged electrodes. The two charged electrodes are located below the nozzle and are symmetrically arranged on both sides of the injection hole. The nozzle is grounded, serving as one pole of the charged electric field, and the two charged electrodes are connected to the high-voltage power supply, serving as the other pole of the charged electric field.

[0012] The wool web charge management device includes two ion fans, which are arranged on the upper and lower sides downstream of the wool fiber web.

[0013] Preferably, the tube body has a cylindrical structure, with a partition in the middle dividing it into left and right parts: an oil inlet channel and an air inlet channel.

[0014] Preferably, the nozzle consists of a cylindrical part and a frustum part, with the cylindrical part located on top and the frustum part located on the bottom, and the two are connected as one unit.

[0015] Preferably, the nozzle is provided with a support base, the upper surface of the support base is an inverted conical groove, the bottom center of the conical groove is connected to the oil injection hole, and a screen is provided above the surface of the conical groove.

[0016] Preferably, the charged electrode has a fan-shaped structure with a 120° opening angle.

[0017] A method for spraying oil onto a wool blending machine, using the aforementioned oil spraying device, includes the following steps:

[0018] S1: Mix crude oil and antistatic agent in a certain proportion, stir, add emulsifier to promote the mutual solubility of the two to obtain crude oil solution, dilute with water to obtain crude oil emulsion required for oil spraying;

[0019] S2: After the wool fibers are mixed in proportion, they are combed by a wool blending machine to form a wool fiber web and then conveyed by a conveying device.

[0020] S3: Add the wool oil emulsion from S1 to the wool oil storage device on the wool blending machine. Compressed air passes through the air inlet pipe at a certain air pressure, while the hydraulic pump pumps the wool oil emulsion to the oil inlet pipe. The air pressure and the wool oil emulsion mix in the nozzle. The high-speed flowing compressed air generates a strong shearing effect on the wool oil emulsion, causing it to atomize into droplets and spray out from the oil spray hole. A strong electric field region is formed between the two charged electrodes and the grounded nozzle. When the droplets pass through this strong electric field region, they acquire a negative charge opposite to that of the wool fiber under the action of the electric field force. Under the action of Coulomb force, the droplets can be deposited efficiently and uniformly on the wool fiber web.

[0021] S4: The wool fiber web, which carries the wool oil mist droplets evenly, continues to be transported. The ion wind generated by the two ion fans neutralizes the residual charge inside the wool fiber web, weakens the repulsive barrier between wool fibers dominated by Coulomb repulsion, increases the effective contact area between wool fibers, and further enhances the bonding strength between the wool oil emulsion droplets and wool fibers. Finally, the wool fiber web is bundled into strips through the bundled trumpet mouth and pressed and converged by the collecting roller.

[0022] Preferably, in step S1, the ratio of crude oil to antistatic agent is 2:1 or 3:1. After thorough mixing and stirring, an emulsifier is added to promote the fusion of the two. After diluting with water 8-12 times, the crude oil emulsion required for oil spraying is obtained.

[0023] Preferably, in step S2, the width of the wool fiber web is 10-15cm, and the speed of the wool blending machine is 60-360 meters per second.

[0024] Preferably, in step S3, the spray pressure is 300-450 kPa, the charging voltage range is 0.5-3 kV, and the charging method is positive high voltage three-electrode induction charging.

[0025] Preferably, in step S4, the power of the ion fan is 250-300V / s, the ambient humidity is 35-65%, and the ambient temperature is 20-27℃.

[0026] This invention provides an oil spraying device and method for a wool blending machine, which has the following beneficial effects:

[0027] This invention, while ensuring the batch production of mixed oil-coated wool tops, utilizes the positive charge characteristic of wool fibers after combing. Through the arrangement of an electrode device, a strong electric field region is formed between two charged electrodes and a grounded nozzle. When droplets pass through this strong electric field region, they acquire a negative charge opposite to that of the wool fibers under the influence of the electric field force. Under the action of Coulomb force, the droplets can be efficiently and uniformly deposited on the wool fiber web, resulting in uniform and efficient spraying of the wool oil emulsion and strong adhesion to the wool fibers. The wool web charge management device neutralizes the residual charge inside the wool fiber web with the ion wind generated by two ion fans, weakening the repulsive barrier dominated by Coulomb repulsion between wool fibers, increasing the effective contact area between wool fibers, and further enhancing the bonding strength between the wool oil emulsion droplets and the wool fibers. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the oil spraying device of the wool blending machine of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the tube body and nozzle of the present invention.

[0030] In the diagram: 1. High-voltage power supply; 2. Pipe body; 3. Nozzle; 4. Charged electrode; 5. Ionizing fan; 6. Support base; 7. Conveyor roller; 8. Oil inlet channel; 9. Air inlet channel; 10. Screen; 11. Oil spray hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example

[0036] Reference Figure 1-2 An oil spraying device for a wool blending machine includes a conveying device, a pipe body 2, a nozzle 3, an electrode device, and a wool web charge management device.

[0037] The conveying device includes two pairs of conveying rollers 7 for conveying wool fiber webs, and the wool fiber webs are divided into upstream and downstream sections between the two pairs of conveying rollers 7 according to the conveying direction.

[0038] The pipe body 2 is located above the upper part of the wool fiber web. The pipe body 2 has an oil inlet channel 8 and an air inlet channel 9. The upper end of the air inlet channel 9 is connected to an air compressor through a rubber hose, and the upper end of the oil inlet channel 8 is connected to a wool oil storage device on a wool blending machine through a rubber hose.

[0039] The nozzle 3 is connected to the lower end of the pipe body 2, and the bottom of the nozzle 3 has an oil injection hole 11;

[0040] The electrode device includes a high-voltage power supply 1 and two charged electrodes 4. The two charged electrodes 4 are located below the nozzle 3 and are symmetrically arranged on both sides of the oil injection hole 11. The nozzle 3 is grounded as one pole of the charged electric field, and the two charged electrodes 4 are connected to the high-voltage power supply 1 as the other pole of the charged electric field.

[0041] The wool web charge management device includes two ion fans 5, which are arranged on the upper and lower sides downstream of the wool fiber web.

[0042] Preferably, in this embodiment, the longitudinal distance between the two conveyor rollers 7 in a pair of conveyor rollers is 1-3mm, the horizontal distance between the two pairs of conveyor rollers 7 is 30-50cm, and the surface of the conveyor rollers 7 is provided with a hydrophobic insulating coating.

[0043] Preferably, in this embodiment, the pipe body 2 is a cylindrical structure, with a partition in the middle dividing it into two parts: an oil inlet channel 8 and an air inlet channel 9.

[0044] Furthermore, the tube body 2 is made of brass, with an outer diameter of 1.5-2cm, a height of 3-4cm, and a thickness of 1-3mm.

[0045] Preferably, in this embodiment, the nozzle 3 is composed of a cylindrical part and a frustum part, with the cylindrical part located on top and the frustum part located on the bottom, and the two are connected as one unit.

[0046] Furthermore, the nozzle 3 is made of brass, with an outer diameter of 1.5-2cm for the cylindrical part, which is the same size as the tube 2. The height of the cylindrical part is 2-3cm, and the thickness is 1-3mm. The diameter of the upper bottom surface of the frustum part is the same as the diameter of the cylindrical part, and the outer diameter of the lower bottom surface is 0.5-1cm. The nozzle 3 can be connected to the tube 2 by screwing. The diameter of the oil injection hole 11 is 0.5-1.5mm.

[0047] Preferably, in this embodiment, a support base 6 is provided inside the nozzle 3. The upper surface of the support base 6 is an inverted conical groove. The bottom center of the conical groove communicates with the oil injection hole 11. A mesh screen 10 is provided 3-5mm above the surface of the conical groove to filter out impurities that may clog the oil injection hole 11.

[0048] Furthermore, the mesh screen 10 has a mesh diameter of 1-3 mm and a mesh spacing of 3 mm.

[0049] Preferably, in this embodiment, the charged electrode 4 is a fan-shaped structure with a 120° opening angle. The outline of the fan shape can cover the trajectory range of the spray, thereby improving the working efficiency of the charged electrode.

[0050] Furthermore, the fan-shaped radius is 15mm-25mm, the electrode thickness is 0.8-1.2mm, the charged electrode 4 is an inductive charging device made of brass, the horizontal distance between the two charged electrodes 4 is 6-12mm, and the longitudinal distance from the nozzle 3 is 7-10mm.

[0051] Preferably, in this embodiment, the two ion fans 5 are arranged opposite each other, with the air outlet perpendicular to the wool fiber web and 10-20cm away from the wool fiber web.

[0052] The present invention also provides an oil spraying method for a wool blending machine, which uses the above-mentioned oil spraying device and includes the following steps:

[0053] S1: Mix crude oil and antistatic agent in a certain proportion, stir, add emulsifier to promote the mutual solubility of the two to obtain crude oil solution, dilute with water to obtain crude oil emulsion required for oil spraying;

[0054] Preferably, in this embodiment, the ratio of crude oil to antistatic agent is 2:1 or 3:1. After thorough mixing and stirring, an emulsifier is added to promote the fusion of the two. After diluting with water 8-12 times, the crude oil emulsion required for oil spraying is obtained.

[0055] S2: After the wool fibers are mixed in proportion, they are combed by a wool blending machine to form a wool fiber web and then conveyed by a conveying device.

[0056] Preferably, in this embodiment, the width of the wool fiber web is 10-15cm, and the speed of the wool blending machine is 60-360 meters per second.

[0057] S3: The wool oil emulsion of S1 is added to the wool oil storage device on the wool blending machine. Compressed air is passed through the air inlet pipe at a certain air pressure. At the same time, the wool oil emulsion is pumped to the oil inlet pipe by the hydraulic pump. The air pressure and the wool oil emulsion are mixed in the nozzle 3. The high-speed flow of compressed air generates a strong shearing effect on the wool oil emulsion, causing it to atomize into droplets and spray out from the oil spray hole 11. A strong electric field region is formed between the two charged electrodes 4 and the grounded nozzle 3. When the droplets pass through this strong electric field region, they carry a negative charge opposite to that of the wool fiber under the action of the electric field force. Under the action of Coulomb force, the droplets can be deposited efficiently and uniformly on the wool fiber web.

[0058] Specifically, a high voltage is applied between the charged electrode 4 and the nozzle 3 (or grounding electrode) to establish a potential difference. Due to the very small physical distance between the two electrodes, according to the basic formula for electric field strength, E = V / d, the voltage V is in the denominator. The tiny d greatly amplifies the effect of the voltage V, allowing even a voltage with a "relatively small" absolute value to generate an extremely strong electric field in a confined space. The charged electrode 4, acting as the high-voltage positive electrode, ionizes the surrounding air, generating a large number of free electrons. After the atomized droplets are ejected from the fuel injection hole 11, they capture these electrons and acquire a negative charge.

[0059] After the carding process, wool fibers typically acquire a positive charge on their surface due to triboelectric effect (wool is a typical fiber that easily carries a positive charge). A strong electrostatic attraction (Coulomb force) occurs between the negatively charged droplets and the positively charged wool fibers. Under this attraction, the droplets quickly and accurately adhere to the wool fiber web, achieving rapid and more targeted movement, avoiding disorderly dispersion, and thus efficiently and uniformly depositing on the wool fiber web. This results in uniform and efficient spraying of the wool oil emulsion, with strong adhesion to the wool fibers. Simultaneously, droplets with the same charge (negative charge) repel each other and disperse, further contributing to their more uniform deposition on the wool fiber web.

[0060] Furthermore, the electric field distribution constructed by the charged electrode 4 can regulate the polarization degree of the wool fiber. In the electric field distribution constructed by the charged electrode 4, when an external electric field is applied to the fiber, the fiber undergoes spatial displacement due to polarization, and the spatial displacement increases with the increase of the electric field strength (the limiting state is perpendicular to the fiber web). Therefore, the wool fiber web can further increase the pore size inside the wool web on the basis of the original volume expansion due to frictional charging, so as to construct channels for the wool oil emulsion droplets to embed into the wool fiber web along the thickness direction of the fiber web, and further ensure the uniform distribution of the wool oil emulsion droplets in the space of the wool fiber web.

[0061] Preferably, in this embodiment, the spray pressure is 300-450 kPa, the charging voltage range is 0.5-3 kV, and the charging method is positive high voltage three-electrode induction charging.

[0062] S4: The wool fiber web carrying the wool oil mist droplets continues to be transported. The ion wind generated by the two ion fans 5 neutralizes the residual charge inside the wool fiber web, weakens the repulsive barrier between wool fibers dominated by Coulomb repulsion, increases the effective contact area between wool fibers, and further enhances the bonding strength between the wool oil emulsion droplets and wool fibers. Finally, the wool fiber web is bundled into strips through the bundled trumpet mouth and pressed and converged by the collecting roller.

[0063] Meanwhile, as the wool fibers move away from the spray area, the electric field weakens, and the gravity effect of the wool fibers becomes stronger than the polarization effect. This causes the pores inside the fiber web to shrink, and the wool oil emulsion droplets to be evenly dispersed inside and outside the wool web.

[0064] Preferably, in this embodiment, the power of the ion fan 5 is 250-300V / s, the ambient humidity is 35-65%, and the ambient temperature is 20-27℃.

[0065] This invention, while ensuring the batch production of mixed oil-coated wool tops, utilizes the positive charge characteristic of wool fibers after combing. Through the arrangement of an electrode device, a strong electric field region is formed between the two charged electrodes 4 and the grounded nozzle 3. When droplets pass through this strong electric field region, they acquire a negative charge opposite to that of the wool fibers under the influence of the electric field force. Under the action of Coulomb force, the droplets can be efficiently and uniformly deposited on the wool fiber web, resulting in uniform and efficient spraying of the wool oil emulsion and strong adhesion to the wool fibers. Through the wool web charge management device, the ion wind generated by the two ion fans 5 neutralizes the residual charge inside the wool fiber web, weakening the repulsive barrier dominated by Coulomb repulsion between wool fibers, increasing the effective contact area between wool fibers, and further enhancing the bonding strength between the wool oil emulsion droplets and the wool fibers.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil spraying device for a wool blending machine, characterized in that: It includes a conveying device, a pipe body, a nozzle, an electrode device, and a wire mesh charge management device; The conveying device includes two pairs of conveying rollers for conveying wool fiber webs, and the wool fiber webs are divided into upstream and downstream sections between the two pairs of conveying rollers according to the conveying direction. The tube body is located above the upper part of the wool fiber web. The tube body has an oil inlet channel and an air inlet channel. The upper end of the air inlet channel is connected to an air compressor via a rubber hose. The upper end of the oil inlet channel is connected to a wool oil storage device on a wool blending machine via a rubber hose. The nozzle is connected to the lower end of the pipe body, and the bottom of the nozzle has an oil injection hole; The electrode device includes a high-voltage power supply and two charged electrodes. The two charged electrodes are located below the nozzle and are symmetrically arranged on both sides of the injection hole. The nozzle is grounded, serving as one pole of the charged electric field, and the two charged electrodes are connected to the high-voltage power supply, serving as the other pole of the charged electric field. The wool web charge management device includes two ion fans, which are arranged on the upper and lower sides downstream of the wool fiber web.

2. The oil spraying device for a wool blending machine according to claim 1, characterized in that: The tube body has a cylindrical structure, with a partition in the middle dividing it into two parts: an oil inlet channel and an air inlet channel.

3. The oil spraying device and method for a wool blending machine according to claim 1, characterized in that: The nozzle consists of a cylindrical part and a frustum part, with the cylindrical part located on top and the frustum part located on the bottom, and the two are connected as one unit.

4. The oil spraying device for a wool blending machine according to claim 1, characterized in that: The nozzle is equipped with a support base, the upper surface of which is an inverted conical groove. The bottom center of the conical groove communicates with the oil injection hole, and a screen is provided above the surface of the conical groove.

5. The oil spraying device and method for a wool blending machine according to claim 1, characterized in that: The charged electrode has a fan-shaped structure with a 120° opening angle.

6. A method for spraying oil onto a wool blending machine, using the oil spraying device according to any one of claims 1-5, characterized in that, Includes the following steps: S1: Mix crude oil and antistatic agent in a certain proportion, stir, add emulsifier to promote the mutual solubility of the two to obtain crude oil solution, dilute with water to obtain crude oil emulsion required for oil spraying; S2: After the wool fibers are mixed in proportion, they are combed by a wool blending machine to form a wool fiber web and then conveyed by a conveying device. S3: Add the wool oil emulsion from S1 to the wool oil storage device on the wool blending machine. Compressed air passes through the air inlet pipe at a certain air pressure, while the hydraulic pump pumps the wool oil emulsion to the oil inlet pipe. The air pressure and the wool oil emulsion mix in the nozzle. The high-speed flowing compressed air generates a strong shearing effect on the wool oil emulsion, causing it to atomize into droplets and spray out from the oil spray hole. A strong electric field region is formed between the two charged electrodes and the grounded nozzle. When the droplets pass through this strong electric field region, they acquire a negative charge opposite to that of the wool fiber under the action of the electric field force. Under the action of Coulomb force, the droplets can be deposited efficiently and uniformly on the wool fiber web. S4: The wool fiber web, which carries the wool oil mist droplets evenly, continues to be transported. The ion wind generated by the two ion fans neutralizes the residual charge inside the wool fiber web, weakens the repulsive barrier between wool fibers dominated by Coulomb repulsion, increases the effective contact area between wool fibers, and further enhances the bonding strength between the wool oil emulsion droplets and wool fibers. Finally, the wool fiber web is bundled into strips through the bundled trumpet mouth and pressed and converged by the collecting roller.

7. The oil spraying method for a wool blending machine according to claim 6, characterized in that: In step S1, the ratio of crude oil to antistatic agent is 2:1 or 3:

1. After thorough mixing and stirring, emulsifier is added to promote the fusion of the two. After diluting with water 8-12 times, crude oil emulsion required for oil spraying is obtained.

8. The oil spraying method for a wool blending machine according to claim 6, characterized in that: In step S2, the width of the wool fiber web is 10-15cm, and the speed of the wool blending machine is 60-360 meters per second.

9. The oil spraying method for a wool blending machine according to claim 6, characterized in that: In step S3, the spray pressure is 300-450 kPa, the charging voltage range is 0.5-3 kV, and the charging method is positive high voltage three-electrode induction charging.

10. The oil spraying method for a wool blending machine according to claim 6, characterized in that: In step S4, the power of the ion fan is 250-300V / s, the ambient humidity is 35-65%, and the ambient temperature is 20-27℃.

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