Air tap type airflow skin cleaning machine and method

Abstract

The invention discloses an air tap type airflow fur cleaning machine and method, and relates to the technical field of cotton processing machinery, the air tap type airflow fur cleaning machine comprises an S-shaped lint cotton pipeline and a fan, the fan is connected with an air duct, two air duct branches are formed at the outlet end of the air duct, one air duct branch is connected to the inlet section of the lint cotton pipeline, and the other air duct branch is connected to the outlet section of the lint cotton pipeline. The other air duct branch is connected to the outlet section of the lint cotton pipeline; an outlet of the air duct branch is provided with an air tap, an air flushing opening is formed between the air tap and the inner wall of the lint cotton pipeline, and air is jetted out of the air flushing opening through the air duct to form air jet. According to the air jet principle, the ginned cotton speed and the wall attachment property of the ginned cotton are improved, the centrifugal force of impurities is increased, the impurities are easily separated in the ginned cotton at the impurity discharging opening, and the impurity discharging rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of cotton processing machinery, and in particular to an air nozzle type airflow skin cleaning machine and a method. Background Art

[0002] Machine-picked cotton has the advantages of high efficiency, less labor and low cost, but the characteristics of machine-picked cotton result in a long cotton ginning process. It needs to go through multiple opening, cleaning and impurity removal before it can enter the sawtooth cotton gin for ginning and produce lint cotton. During the entire seed cotton cleaning and ginning process, impurities cannot be completely removed. There are still impurities such as sterile seeds, broken seeds, cotton stalks, dust, etc. in the lint cotton, and impurity cleaning and cleaning of the lint cotton is also required to improve the quality of the lint cotton.

[0003] Lint cleaning equipment is mainly divided into sawtooth lint cleaning machine (sawtooth lint cleaning machine) and airflow lint cleaning machine (airflow lint cleaning machine). Among them, the sawtooth lint cleaning machine is the most commonly used model, which has the advantages of high impurity removal efficiency and can comb the lint shape, but its rapid hooking and pulling process of lint will damage the cotton fiber and increase short fibers; the airflow lint cleaning machine has a lower cleaning efficiency and is generally used with a sawtooth lint cleaning machine, but its advantage of completely no damage to cotton fibers is unmatched by the sawtooth lint cleaning machine. Spinning mills have very high requirements for the fiber length and shape of lint in order to spin high-quality yarn. At the same time, the gradual increase in machine-picked cotton has higher requirements for airflow lint cleaning machines.

[0004] The prior art discloses a pressurized airflow lint cleaning machine, which is provided with a pressurized fan at the front section of the lint channel, a debris discharge port at the bend, and a debris discharge auger below the debris discharge port; under the action of the pressurized fan, after the cotton fibers collide with the debris discharge blade, they can quickly change the direction of movement due to their small inertia and continue to move upward with the airflow, while after the impurities collide with the debris discharge blade, they are thrown onto the debris discharge blade due to their large inertia and cannot continue to move with the airflow. The above scheme uses a pressurized method to separate the lint from the impurities, but due to the high pressure, there is a problem that some lint does not have time to change direction at the debris discharge port and is discharged from the debris discharge port. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an air nozzle type airflow lint cleaning machine and method, which utilizes the air jet principle to increase the lint speed and the wall adhesion of the lint, increase the centrifugal force of impurities, make the impurities easily separated in the lint at the impurity discharge port, and improve the discharge rate of impurities.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides an air nozzle type air flow skin cleaning machine, comprising:

[0008] S-shaped lint duct;

[0009] The fan is connected to the air duct, and the outlet end of the air duct forms two air duct branches, one of which is connected to the inlet section of the lint pipe, and the other is connected to the outlet section of the lint pipe; an air nozzle is installed at the outlet of the air duct branch, and an air outlet is formed between the air nozzle and the inner wall of the lint pipe, and air is ejected from the air outlet through the air duct to form an air jet.

[0010] As a further implementation, the cross-sectional area of ​​the air duct branch gradually decreases along the air flow direction.

[0011] As a further implementation method, the distance between the air outlet of the air nozzle installed at the inlet section of the lint duct and the inlet upper plate is smaller than the distance between the air outlet and the inlet lower front plate and the inlet lower rear plate;

[0012] The distance between the air outlet of the air nozzle installed at the outlet section of the lint duct and the outlet front plate is smaller than the distance between the air outlet and the outlet rear plate.

[0013] As a further implementation, the air nozzle includes a hood, one end of the hood is connected to the air duct branch, and the other end is an air outlet.

[0014] As a further implementation, a debris removal knife is installed at the debris removal port of the lint pipe, and the debris removal knife is connected to a knife adjusting structure, and the knife adjusting structure is used to adjust the debris removal knife to adjust the shape of the lint pipe.

[0015] As a further implementation method, the knife adjusting structure includes a knife adjusting rod, a knife adjusting shaft and a connecting plate, the adjusting rod is fixed to the circumferential side of the knife adjusting shaft, and the knife adjusting shaft is connected to one end of the connecting plate through a connecting sleeve; the debris removing knife is connected to the other end of the connecting plate.

[0016] As a further implementation, the debris removal knife is connected to the outlet rear plate via a plug-in structure.

[0017] As a further implementation, the debris removal knife is provided with an elongated hole, and the pin passes through the elongated hole and is connected to the wallboard.

[0018] In a second aspect, an embodiment of the present invention further provides a method for cleaning impurities using an air nozzle type airflow skin cleaning machine, comprising:

[0019] Driven by the fan, the lint enters the lint duct along with the air;

[0020] The difference in centrifugal force between impurities and lint at the sharp turn of the lint pipe is used to separate impurities from cotton fibers. During the separation process, air jets are injected into the lint pipe, which accelerates the air flow rate in the lint pipe and causes impurities to be ejected from the impurity discharge port.

[0021] As a further implementation method, based on the wall attachment effect of the air jet, the lint fits tightly to the inlet upper plate and smoothly passes through the turning point, and then moves upward along the outlet front plate.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) The present invention adds a fan and installs an air nozzle in the lint pipe. The high-speed airflow ejected by the air nozzle forms an air jet. The air jet not only increases the wind speed in the lint pipe and increases the centrifugal force of the lint and impurities therein, but also makes the lint fit more closely to the inner wall of the pipe, so that impurities can be easily separated from the lint, thereby improving the impurity cleaning efficiency. Air nozzles are installed at the inlet and outlet sections of the lint pipe. The lower air nozzle can ensure the smooth turning of the lint and the discharge of impurities from the impurity discharge port. The upper air nozzle can prevent the lint from being discharged at the impurity discharge port, so that the lint moves upward tightly along the inner wall of the lint pipe, further ensuring the impurity removal quality and efficiency.

[0024] (2) The present invention is also equipped with an adjustable impurity removal knife. The angle and position of the impurity removal knife are changed by the knife adjustment structure, thereby changing the size, position and direction of the impurity removal port, ensuring that impurities are ejected from the lint pipe at the impurity removal port, and the lint can continue to move upward along the lint pipe, so that impurities are further discharged from the lint. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a schematic structural diagram of an air nozzle type air flow skin cleaning machine according to one or more embodiments of the present invention;

[0027] Figure 2 is a schematic diagram of a gas nozzle structure according to one or more embodiments of the present invention;

[0028] Figure 3 The present invention is a schematic diagram of the adjustment structure of the debris removal knife according to one or more embodiments Figure 1 ;

[0029] Figure 4 The present invention is a schematic diagram of the adjustment structure of the debris removal knife according to one or more embodiments Figure 2 .

[0030] Among them, 1. debris flow plate, 2. debris discharge port, 3. debris discharge knife, 4. debris blocking plate, 5. knife adjustment structure, 6. adjustment seat, 7. outlet rear plate, 8. outlet front plate, 9. upper air nozzle, 10. lower air nozzle, 11. fan, 12. inlet upper plate, 13. inlet lower front plate, 14. inlet lower rear plate, 15. wall panel, 16. lint pipe, 17. air duct, 18. wind hood, 19. air outlet, 20. pin shaft, 21. connecting plate, 22. connecting sleeve, 23. knife adjustment shaft, 24. knife adjustment rod, 25. plug-in structure. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] This embodiment provides an air nozzle type air flow lint cleaning machine, whose working principle is: since the density and weight of impurities are greater than those of cotton fibers, the difference in centrifugal force between impurities and lint at the sharp turn of the lint pipe is utilized to separate impurities from cotton fibers.

[0035] The air nozzle type airflow lint cleaning machine includes an upward S-shaped lint duct 16 composed of a wall panel 15 and an internal baffle, wherein the wall panel 15 is a side enclosure of the lint duct 16; an air nozzle is arranged in the lint duct 16, and the high-speed airflow ejected by the air nozzle forms an air jet; the air jet not only increases the wind speed in the lint duct 16 and increases the centrifugal force of the lint and the impurities therein, but also makes the lint fit more closely to the inner wall of the lint duct 16, so that the impurities can be easily separated from the lint, thereby improving the cleaning efficiency. In addition, an adjustable impurity discharge knife 3 is arranged, which can ensure that the impurities are ejected from the lint duct 16 at the impurity discharge port 2 by changing the size, position and direction of the impurity discharge port 2, and the lint can continue to move upward along the lint duct 16, so that the impurities are further discharged in the lint.

[0036] Specifically, Figure 1As shown, the lint pipe 16 is defined as an inlet section and an outlet section according to the direction of lint movement, and the inlet section is composed of an inlet upper plate 12, an inlet lower front plate 13, and an inlet lower rear plate 14, wherein the inlet upper plate 12 is located above the inlet lower front plate 13 and the inlet lower rear plate 14, and the inlet lower front plate 13 and the inlet lower rear plate 14 are arranged in sequence, and the inlet lower front plate 13 is a plate member close to the inlet of the lint pipe 16. The debris plate 1 is installed below the end of the inlet lower rear plate 14 away from the inlet lower front plate 13.

[0037] The outlet section is composed of an outlet front plate 8 and an outlet rear plate 7, the outlet front plate 8 is connected to the inlet upper plate 12, and a debris discharge port 2 is formed between the inlet lower rear plate 14 and the outlet rear plate 7; a debris retaining plate 4 is also provided at a certain distance corresponding to the debris discharge port 2, and the debris retaining plate 4 is fixed to the wall plate 15. Along the movement direction of the lint, the cross-sectional area of ​​the inlet section of the lint pipe 16 gradually decreases; after turning, the cross-sectional area of ​​the outlet section of the lint pipe 16 gradually increases.

[0038] The fan 11 is connected to the inlet section and the outlet section of the lint duct 16 through the air duct 17. Therefore, the air duct 17 has two air duct branches, one of which is connected to the inlet section of the lint duct 16, and the other is connected to the outlet section of the lint duct 16. Air nozzles are installed at the outlets of the two air duct branches; the cross-sectional area of ​​the air duct 17 gradually decreases from the end close to the fan 11 to the other end. For the convenience of description, the air nozzle installed on the inlet upper plate 12 is the lower air nozzle 10, and the air nozzle installed at the outlet front plate 8 is the upper air nozzle 9. In this embodiment, the lower air nozzle 10 is located in the middle of the inlet upper plate 12, and the upper air nozzle 9 is located at one end of the outlet front plate 8 close to the inlet upper plate 12, so as to better provide air jets.

[0039] like Figure 2 As shown, both the upper air nozzle 9 and the lower air nozzle 10 include a hood 18 and an air outlet 19, and the hood 18 is connected to the air duct branch; in this embodiment, the hood 18 has a certain curvature and is bent toward the inlet upper plate 12 (exit front plate 8) side, and a gap is formed at the outlet end, namely, the air outlet 19. The air and initial velocity in the air duct 17 are provided by the fan 11. As the cross-sectional area of ​​the air duct 17 decreases, the air velocity at the air outlet 19 is very large and is ejected at the air outlet 19.

[0040] The flow formed by the gas ejected from the orifice or slit to the surrounding is called a gas jet. The high-speed air ejected from the blast port 19 is an air jet. When the air jet is ejected into the space, the jet collides with the surrounding air to exchange momentum, and drives the surrounding air forward. Since the air near the jet port is carried away by the jet, a negative pressure environment will be formed near the jet, and the outside air will be supplemented to form an additional airflow. When the air jet enters a confined space, the additional airflow velocity is fast on the side with a smaller distance from the air jet to the wall, and slow on the side with a larger distance; however, the static pressure on the side with a slower additional airflow velocity is greater than that on the side with a faster velocity. Under the action of the pressure difference, the air jet is pressed toward the wall on the side with a smaller distance, and ejected along the wall, forming a wall attachment effect.

[0041] The distance between the hood 18 and the inlet upper plate 12 is much smaller than the distance between the hood 18 and the inlet lower front plate 13 and the inlet lower rear plate 14, and the air jet ejected from the air outlet 19 will flow along the bottom surface of the inlet upper plate 12. After the lint passes through the lower air nozzle 10, the lint is transferred to the jet and moves along the bottom surface of the inlet upper plate 12 under the action of static pressure, thereby preventing the lint from being discharged due to failure to turn in time at the impurity discharge port 2.

[0042] The lint ginned by the cotton gin enters the lint pipe 16 of the airflow lint cleaning machine along with the air, and the lint moves from bottom to top in an S-bend. The lint first enters the lower part (inlet section) of the lint pipe 16 surrounded by the inlet upper plate 12, the inlet lower front plate 13, the inlet lower rear plate 14 and the wall plate 15, and the cross-sectional area of ​​the pipe gradually decreases, and the wind speed gradually increases. After turning, the lint enters the upper part (outlet section) of the lint pipe 16 surrounded by the wall plate 15, the impurity removal knife 3, the outlet rear plate 7 and the outlet front plate 8, and the cross-sectional area of ​​the pipe gradually increases. The lint and impurities obtain the maximum speed and momentum at the minimum cross-sectional area of ​​the lint pipe 16. The air changes direction sharply at the turning point. Due to the centrifugal force, the impurities heavier than the cotton fibers and not tightly wrapped by the cotton fibers have no time to change direction and are discharged at the impurity removal port 2; the lighter lint continues to move upward driven by the air. The existence of the lower air nozzle 10 further guarantees the above movement process.

[0043] The air jet is injected into the lint pipe 16, which accelerates the air flow rate in the lint pipe 16, and the speed, momentum and centrifugal force of the impurities in the lint also increase accordingly. Heavier impurities are less likely to change the direction of speed, so that more impurities in the lint can be ejected at the impurity discharge port 2 along the inlet section of the lint pipe 16; at the same time, due to the wall attachment effect of the air jet, the lint can be more closely attached to the bottom surface of the inlet upper plate 12 and pass the bend smoothly. Since the wind speed at the impurity discharge port 2 is fast, some lint may not have time to change direction. The presence of the upper air nozzle 9 further avoids the discharge of lint at the impurity discharge port 2, so that the lint moves upward tightly along the outlet front plate 8.

[0044] In order to further adjust the shape of the lint duct 16, the present embodiment designs the debris removal knife 3 as a movable structure. The debris removal knife 3 is connected to the knife adjustment structure, and the position and angle of the debris removal knife 3 are changed by the knife adjustment structure, thereby changing the size, position and direction of the debris removal port 2, and finally achieving the adjustment of the shape of the lint duct 16.

[0045] like Figure 3 and Figure 4 As shown, the knife adjustment structure 5 includes a knife adjustment rod 24, an adjustment seat 6, a knife adjustment shaft 23, a connecting plate 21 and a plug-in structure 25. In the initial state, the knife adjustment rod 24 is arranged vertically and connected to the wallboard 15 through the adjustment seat 6; wherein the adjustment seat 6 is fixed to the wallboard 15, and the adjustment seat 6 is provided with a strip hole for the knife adjustment rod 24 to swing (rotate) left and right. The end of the knife adjustment rod 24 is welded and fixed to the knife adjustment shaft 23, and the wallboard 15 is provided with a hole for the knife adjustment shaft 23 to pass through, and the hole diameter is slightly larger than the diameter of the knife adjustment shaft 23, so that the knife adjustment shaft 23 can rotate in the hole.

[0046] The knife adjusting shaft 23 is perpendicular to the wallboard 15 and is also perpendicular to the axis direction of the knife adjusting rod 24. A connecting sleeve 22 is installed on the outside of the knife adjusting shaft 23, and the connecting sleeve 22 is connected to one end of the connecting plate 21, and the debris removal knife 3 is installed on the other end of the connecting plate 21; the adjusting rod is rotated to the left (right) to drive the knife adjusting shaft 23 and the connecting sleeve 22 to move, so that the connecting plate 21 and the debris removal knife 3 move. The debris removal knife 3 is provided with a strip hole, and the pin 20 passes through the strip hole to connect with the wallboard 15; the debris removal knife 3 is connected to the connecting plate 21 by bolts, and the debris removal knife 3 is connected to the outlet rear plate by a plug-in structure 25, and the plug-in structure 25 provides a certain amount of activity margin for the debris removal knife 3.

[0047] It should be noted that the plug-in structure 25 is an existing structure, which can be composed of a plurality of panels that are plugged in sequentially.

[0048] The knife adjusting rod 24 rotates to the left, driving the connecting plate 21 and the impurity removal knife 3 to move to the upper right, changing the size, position and angle of the impurity removal port 2, ensuring that the impurities are ejected from the lint pipe 16 at the impurity removal port 2, and the lint can continue to move upward along the lint pipe 16, which can be applied to various processing conditions. The knife adjusting rod 24 can also rotate to the right to change the position of the impurity removal port 2 and the impurity removal knife 3.

[0049] Compared with the traditional airflow lint cleaning machine with only a single fan, this embodiment adds a fan 11, adds an upper air nozzle 9 and a lower air nozzle 10 in the original lint pipe 16, and uses the air jet principle to increase the lint speed and the wall adhesion of the lint, increase the centrifugal force of impurities, and the impurities can be easily separated in the lint at the impurity discharge port 2, thereby improving the discharge rate of impurities. In addition, by adjusting the position of the impurity discharge knife 3, observing the impurity discharge effect, changing the size, position and angle of the impurity discharge port 2, the impurity discharge efficiency is further improved.

[0050] Embodiment 2:

[0051] This embodiment provides a cleaning method of an air nozzle type air flow skin cleaning machine, based on the air nozzle type air flow skin cleaning machine described in Example 1, the specific process is as follows:

[0052] Driven by the original fan, the lint ginned by the cotton gin enters the lint pipe 16 with the air; the lint moves from bottom to top in an S-bend. The lint first enters the inlet section of the lint pipe 16, the cross-sectional area of ​​the pipe gradually decreases, and the wind speed gradually increases. After turning, the lint enters the outlet section of the lint pipe 16, and the cross-sectional area of ​​the pipe gradually increases. The lint and impurities obtain the maximum speed and momentum at the point where the cross-sectional area of ​​the lint pipe 16 is the smallest. The air changes direction sharply at the turn. Due to the centrifugal force, impurities that are heavier than cotton fibers and are not tightly wrapped by cotton fibers do not have time to change direction and are discharged at the impurity discharge port 2; the lighter lint continues to move upward driven by the air.

[0053] The air jet is injected into the lint duct 16, which accelerates the air flow rate in the lint duct 16, and the speed, momentum and centrifugal force of the impurities in the lint also increase accordingly. Heavier impurities are more difficult to change the direction of speed, so that more impurities in the lint can be ejected at the impurity discharge port 2 along the inlet section of the lint duct 16; at the same time, due to the wall adhesion effect of the air jet, the lint can fit more closely on the bottom surface of the inlet upper plate 12 and pass through the turning smoothly.

[0054] During the cleaning process, the lower air nozzle 10 can ensure that impurities are discharged from the impurity discharge port 2, and the upper air nozzle 9 further prevents the lint from being discharged from the impurity discharge port 2, so that the lint moves upward closely along the outlet front plate 8.

[0055] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air nozzle type air flow skin cleaning machine, characterized in that: include: S-shaped lint duct; The fan is connected to the air duct, and the outlet end of the air duct forms two air duct branches, one of which is connected to the inlet section of the lint pipe, and the other is connected to the outlet section of the lint pipe; an air nozzle is installed at the outlet of the air duct branch, and an air outlet is formed between the air nozzle and the inner wall of the lint pipe, and air is ejected from the air outlet through the air duct to form an air jet.

2. The air nozzle type air flow skin cleaning machine according to claim 1, characterized in that: The cross-sectional area of ​​the air duct branch gradually decreases along the air flow direction.

3. The air nozzle type air flow skin cleaning machine according to claim 1, characterized in that: The distance between the air outlet of the air nozzle installed at the inlet section of the lint duct and the inlet upper plate is smaller than the distance between the air outlet and the inlet lower front plate and the inlet lower rear plate; The distance between the air outlet of the air nozzle installed at the outlet section of the lint duct and the outlet front plate is smaller than the distance between the air outlet and the outlet rear plate.

4. The air nozzle type air flow skin cleaning machine according to claim 1 or 3, characterized in that: The air nozzle comprises a hood, one end of which is connected to the air duct branch and the other end of which is an air outlet.

5. The air nozzle type air flow skin cleaning machine according to claim 1, characterized in that: A debris removal knife is installed at the debris removal port of the lint pipe, and the debris removal knife is connected to a knife adjusting structure, and the knife adjusting structure is used to adjust the debris removal knife to adjust the shape of the lint pipe.

6. The air nozzle type air flow skin cleaning machine according to claim 5, characterized in that: The knife adjusting structure comprises a knife adjusting rod, a knife adjusting shaft and a connecting plate. The adjusting rod is fixed to the peripheral side of the knife adjusting shaft, and the knife adjusting shaft is connected to one end of the connecting plate through a connecting sleeve; the debris removal knife is connected to the other end of the connecting plate.

7. The air nozzle type air flow skin cleaning machine according to claim 6, characterized in that: The debris removal knife is connected to the outlet rear plate through a plug-in structure.

8. An air nozzle type air flow skin cleaning machine according to any one of claims 5-7, characterized in that: The debris removal knife is provided with an elongated hole, and the pin passes through the elongated hole and is connected with the wallboard.

9. A cleaning method for an air nozzle type airflow skin cleaning machine according to any one of claims 1 to 8, characterized in that: include: Driven by the fan, the lint enters the lint duct along with the air; The difference in centrifugal force between impurities and lint at the sharp turn of the lint pipe is used to separate impurities from cotton fibers. During the separation process, air jets are injected into the lint pipe, which accelerates the air flow rate in the lint pipe and causes impurities to be ejected from the impurity discharge port.

10. The cleaning method of the air nozzle type air flow skin cleaning machine according to claim 9, characterized in that: Based on the wall effect of the air jet, the lint fits tightly to the upper plate of the inlet and passes smoothly through the turning point, and then moves upward along the front plate of the outlet.

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