Cotton seed screening device for cotton material

Abstract

A cotton seed screening device for cotton material comprises a material drum, a roller screen drum and a screening rope. A filter plate is arranged inside the material drum corresponding to the roller screen drum directly below, the filter plate is arranged as an arc-shaped plate, a first material channel is arranged between the filter plate and the roller screen drum, a second material channel is arranged between the filter plate and the material drum, the third discharge port is communicated with the second material channel, the second discharge port is communicated with the first material channel, and the first discharge port is located outside the ends of the filter plate and the roller screen drum; a rotatable roller screen drum is arranged inside the material drum, and the rotation of the roller screen drum is utilized to pull the cotton material, and the cotton seeds, cotton husks and other materials therein are screened out, and the screening rope arranged outside the roller screen drum is coordinated to screen the materials on the surface of the roller screen drum, so that the cotton seeds, cotton stalks and cotton leaves in the cotton are caused to fall off from the cotton, and the cotton, cotton husks and cotton seeds and other materials in the material are separated through the configured filter plate.

Description

Technical Field

[0001] The invention belongs to the technical field of cotton seed screening, and in particular relates to a cotton seed screening device for cotton materials. Background Art

[0002] As a natural plant fiber for textiles, cotton is one of the indispensable raw materials for the textile industry. It has uniform fineness and length, good fiber quality, and is suitable for making textiles such as clothing and fabrics. It has good hand feel and air permeability. Cotton also contains cotton seeds, cotton stalks, cotton leaves and other debris, so the cotton material needs to be screened in advance.

[0003] At present, in the screening of cotton materials, all impurities in the cotton are generally screened out, and only the cotton is retained. The cotton and cotton seeds have high economic utilization value, and the cotton stalks and cotton leaves can also be used as biomass fuel. When materials other than cotton are reused, they need to be screened twice. Therefore, classifying and screening the materials in the cotton material can reduce the subsequent screening steps and facilitate the separation of high-value and low-value materials. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a cotton seed screening device for cotton materials to partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: The embodiment of the present invention proposes a cotton seed screening device for cotton materials, comprising:

[0006] A material barrel, the axis of which is arranged in the horizontal direction, a feed port is arranged at the top of one end of the material barrel, and a discharge port is arranged at the bottom of the other end;

[0007] A roller screen cylinder is arranged inside the material cylinder and can rotate around the axis of the material cylinder;

[0008] A beating rope is fixedly arranged inside the material cylinder and can be used to beating the material on the surface of the roller screen cylinder;

[0009] Among them, a filter plate is provided inside the material barrel corresponding to the bottom of the roller screen barrel, and the filter plate is configured as an arc-shaped plate. A first material channel is provided between the filter plate and the roller screen barrel, and a second material channel is provided between the filter plate and the material barrel. The discharge port comprises a third discharge port, a second discharge port and a first discharge port arranged in sequence along the material conveying direction, the third discharge port is connected with the second material channel, the second discharge port is connected with the first material channel, and the first discharge port is located outside the end of the filter plate and the roller screen barrel.

[0010] Furthermore, it also includes a driver, which is fixedly arranged on the outer side wall of the material barrel and is used to drive the roller screen drum to rotate; the roller screen drum includes a roller screen outer cylinder, the roller screen outer cylinder is arranged in the material barrel, and is driven by the driver to rotate around a first direction;

[0011] The roller screen outer cylinder comprises a screening area and a separation area arranged in sequence along the material conveying direction, and a plurality of pulling rings are fixedly arranged on the outer wall of the roller screen outer cylinder corresponding to the screening area along the axial direction, the pulling rings protrude from the outer wall of the roller screen outer cylinder, and the plurality of pulling rings are spirally distributed around the axis;

[0012] The separation zone is arranged between the first discharge port and the second discharge port, and the screening zone is arranged between the feed port and the second discharge port.

[0013] Furthermore, the roller screen cylinder further comprises a roller screen inner cylinder, the roller screen inner cylinder is arranged inside the roller screen outer cylinder, and is driven by the driver to rotate around a second direction, the first direction is opposite to the second direction;

[0014] A group of give-way grooves is provided between any two adjacent pulling rings, each group includes a plurality of the give-way grooves centrally symmetrically distributed around the axis, an air cavity seat is provided in the inner cylinder of the roller screen corresponding to each group of the give-way grooves, a pulling piece movable in the radial direction is installed in the air cavity seat, and the outer edge of the pulling piece movable in the radial direction has a contact portion;

[0015] The pulling piece on the inner cylinder of the roller screen includes a first position in which the contact portion is retracted into the air cavity seat and a second position in which the contact portion extends out of the air cavity seat and protrudes from the pulling ring, and when the pulling piece is rotated to coincide with the make way groove, the pulling piece is in the second position, and when the pulling piece is rotated to between the two make way grooves, the pulling piece is in the first position.

[0016] Furthermore, an air cavity is provided in the air cavity seat for the pulling piece to move, and connecting tubes are fixedly installed between the multiple air cavity seats so that the multiple air cavities are connected through the connecting tubes, and one of the air cavities is connected to an external air pump device through an air guide tube for supplying / extracting air into the air cavity to drive the pulling piece to move in the air cavity seat.

[0017] Furthermore, a support ring seat and a support shaft are fixedly provided inside the material cylinder, the support ring seat is arranged on the outer wall of one end of the roller screen outer cylinder, the support shaft is arranged on the other end of the roller screen outer cylinder, bearings are installed at the connection between the roller screen outer cylinder and the support ring seat and the support shaft, bearings are installed at the connection between the roller screen inner cylinder and the roller screen outer cylinder, and one end of the roller screen inner cylinder protrudes from the roller screen outer cylinder;

[0018] A transmission gear set is provided inside the material cylinder corresponding to the roller screen outer cylinder and the roller screen inner cylinder. The output end of the driver is transmission-connected with the transmission gear set, and drives the roller screen outer cylinder to rotate around the first direction and drives the roller screen inner cylinder to rotate around the second direction respectively.

[0019] Further, the screening rope comprises:

[0020] An elastic rope is arranged parallel to the axis, and both ends are fixed on a rope support, and the rope support is fixed on the inner wall of the material barrel;

[0021] A reel is fixedly arranged on the inner wall of the material cylinder, and the reel can pull and release the elastic rope so that the elastic rope bounces toward the surface of the roller screen cylinder;

[0022] Among them, a positioning sleeve is fixedly installed on the elastic rope, and a pulling rope is fixedly connected to the positioning sleeve. An intermittent winding mechanism is provided inside the winder, and the other end of the pulling rope is fixedly connected to the intermittent winding mechanism, so that the winder can cyclically pull the elastic rope, so that the elastic rope reciprocates toward the surface of the roller screen.

[0023] Furthermore, the length of the elastic rope is less than or equal to the length of the roller screen cylinder, and a plurality of groups of the screening ropes are arranged on the upper side of the roller screen cylinder, and the arc interval between each two adjacent screening ropes is set at π / 6~π / 4.

[0024] Furthermore, a plurality of groups of air blowing nozzles are provided on the side of the filter plate along the axial direction, the air blowing nozzles are connected to an external air supply device through an air supply pipe, and the air flow direction derived from the air blowing nozzles is toward the upper surface of the filter plate.

[0025] Furthermore, a baffle is provided on the upper surface of the filter plate corresponding to the second discharge port, and both ends of the baffle extend to the side of the filter plate. A group of blowing nozzles are provided on both sides of the filter plate close to the baffle, and the remaining blowing nozzles are distributed on a single side of the filter plate.

[0026] Furthermore, the filter plate is configured as an arc-shaped plate with an arc of π / 2.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] The present invention arranges a rotatable roller screen drum inside a material drum, and utilizes the rotation of the roller screen drum to pull the cotton material, so as to screen out materials such as cotton seeds and cotton husks therein; and cooperates with a screening rope arranged on the outer side of the roller screen drum to screen and beat materials on the surface of the roller screen drum, so as to cause cotton seeds, cotton stalks and cotton leaves in the cotton to fall off from the cotton, and separates materials such as cotton husks and cotton seeds in the material through a configured filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a cotton seed screening device for cotton material proposed in an embodiment of the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the half-section structure;

[0031] Figure 3 A schematic diagram of the internal structure of a cotton seed screening device for cotton material proposed in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0033] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0034] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure in the CC direction;

[0035] Figure 7 for Figure 6 Schematic diagram of the structure when the middle pulling piece is extended.

[0036] Among them, 01, driver; 02, transmission gear set; 021, first transmission gear; 022, second transmission gear; 023, third transmission gear; 10, material barrel; 101, first discharge port; 102, second discharge port; 103, third discharge port; 11, feed port; 12, support frame; 13, filter plate; 131, baffle; 14, support ring seat; 15, support shaft; 20, roller screen outer cylinder; 201. Screening area; 202. Disengagement area; 21. Pulling ring; 22. Yielding groove; 30. Roller screen inner cylinder; 31. Air cavity seat; 311. Air cavity; 32. Pulling sheet; 321. Piston; 33. Connecting pipe; 40. Screening rope; 41. Elastic rope; 411. Rope bracket; 42. Winder; 421. Pulling rope; 422. Positioning jacket; 50. Air guide tube; 60. Air nozzle; 61. Air supply pipe.

[0037] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0039] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0040] In an embodiment of the present invention, a cotton seed screening device for cotton material is provided, which is intended to screen cotton, cotton seeds, cotton stalks and cotton leaves in the cotton material to avoid subsequent secondary screening. The device mainly includes a material drum 10, a roller screen drum, a screening rope 40 and a driver 01.

[0041] like Figure 1 and Figure 2 As shown, the material barrel 10 is constructed as a hollow cylinder, and the axis of the material barrel 10 is arranged in the horizontal direction, and a support frame 12 is arranged at the bottom to keep the material barrel 10 in a stable state. A feed port 11 is arranged at the top of one end of the material barrel 10, so that cotton material can enter the inside of the material barrel 10, and a discharge port is arranged at the bottom of the other end of the material barrel 10, wherein the discharge port includes a third discharge port 103, a second discharge port 102 and a first discharge port 101 arranged in sequence along the material conveying direction.

[0042] Furthermore, the roller screen drum is arranged inside the material drum 10 and can rotate around the axis of the material drum 10. The screening rope 40 is fixedly arranged inside the material drum 10 and can screen the material on the surface of the roller screen drum, causing the cotton seeds, cotton stalks and cotton leaves in the cotton to fall off from the cotton. The driver 01 is fixedly arranged on the outer wall of the material drum 10 and is used to drive the roller screen drum to rotate. When the roller screen drum rotates, the screening rope 40 can screen the material on the surface of the roller screen drum from multiple angles to avoid blind spots.

[0043] Furthermore, a filter plate 13 is provided inside the material barrel 10 just below the corresponding roller screen drum, and the filter plate 13 is configured as an arc-shaped plate. A first material channel is provided between the filter plate 13 and the roller screen drum, and the first material channel is for the cotton on the surface of the roller screen drum and larger impurities such as cotton stalks and cotton leaves that have fallen from the cotton to pass through. A second material channel is provided between the filter plate 13 and the material barrel 10, and the second material channel is for the cotton seeds that have fallen from the upper surface of the filter plate 13 to pass through. The third discharge port 103 is connected to the second material channel for collecting cotton seeds, and the second discharge port 102 is connected to the first material channel for collecting larger impurities such as cotton stalks and cotton leaves. The first discharge port 101 is located outside the end of the filter plate 13 and the roller screen drum, and is used to collect the cotton that has fallen from the outside of the roller screen drum after the impurities have been screened out.

[0044] like Figure 2 and Figure 3 As shown, the roller screen cylinder includes a roller screen outer cylinder 20 and a roller screen inner cylinder 30. The roller screen outer cylinder 20 is arranged in the material cylinder 10 and is driven by the driver 01 to rotate around a first direction. The roller screen inner cylinder 30 is arranged on the inner side of the roller screen outer cylinder 20 and is driven by the driver 01 to rotate around a second direction. The first direction is opposite to the second direction.

[0045] In some embodiments, a support ring seat 14 and a support shaft 15 are fixedly provided inside the material barrel 10, the support ring seat 14 is arranged on the outer wall of one end of the roller screen outer cylinder 20, and the support shaft 15 is arranged at the other end of the roller screen outer cylinder 20, and bearings are installed at the connection between the roller screen outer cylinder 20 and the support ring seat 14 and the support shaft 15, wherein the support ring seat 14 and the support shaft 15 can support and keep the roller screen outer cylinder 20 in a set position to rotate around the axis, and bearings are installed at the connection between the roller screen inner cylinder 30 and the roller screen outer cylinder 20, so that the roller screen inner cylinder 30 can rotate around the axis inside the roller screen outer cylinder 20.

[0046] Furthermore, one end of the roller screen inner cylinder 30 protrudes from the roller screen outer cylinder 20, and a transmission gear set 02 is provided inside the material cylinder 10 corresponding to the roller screen outer cylinder 20 and the roller screen inner cylinder 30. The output end of the driver 01 is connected to the transmission gear set 02, and drives the roller screen outer cylinder 20 to rotate in a first direction and drives the roller screen inner cylinder 30 to rotate in a second direction respectively.

[0047] Among them, the transmission gear set 02 includes a first transmission gear 021, a second transmission gear 022, and a third transmission gear 023. The first transmission gear 021 is coaxially arranged with the second transmission gear 022 and is directly driven to rotate by the driver 01, so that the second transmission gear 022 is meshed with the outer wall of the roller screen outer cylinder 20 for transmission, driving the roller screen outer cylinder 20 to rotate around the first direction (clockwise). The third transmission gear 023 is arranged to be meshed with the first transmission gear 021 for transmission, and the other side of the third transmission gear 023 is meshed with the outer wall of the roller screen inner cylinder 30 for transmission. In this way, the roller screen inner cylinder 30 rotates in the opposite direction to the roller screen outer cylinder 20 and rotates around the second direction (counterclockwise).

[0048] Furthermore, the roller screen outer cylinder 20 includes a screening area 201 and a separation area 202 which are sequentially arranged along the material conveying direction.

[0049] Among them, a plurality of pulling rings 21 are fixedly provided along the axial direction on the outer wall of the roller screen outer cylinder 20 corresponding to the screening area 201, the pulling rings 21 protrude from the outer wall of the roller screen outer cylinder 20, and the plurality of pulling rings 21 are spirally distributed around the axis. In some embodiments, the outer wall of the pulling ring 21 is covered with evenly distributed needles, which can enhance the adhesion of the cotton material and pull the cotton material to screen out the cotton seeds, cotton shells and other materials therein. In this way, as the roller screen outer cylinder 20 rotates, the cotton material will be distributed on the outer wall of the roller screen outer cylinder 20, and will be pulled and transported forward by the pulling rings 21, while separating the cotton, cotton shells, cotton seeds and other materials in the material.

[0050] Among them, the outer wall of the separation zone 202 is a smooth plane. After the cotton material is transported from the screening zone 201 to the separation zone 202, the cotton is freed from the restraint of the pulling ring 21 and can slide from the surface of the roller screen outer cylinder 20. The separation zone 202 is arranged between the first discharge port 101 and the second discharge port 102, so that the cotton fallen off the separation zone 202 can fall to the first discharge port 101 for discharge. The screening zone 201 is arranged between the feed port 11 and the second discharge port 102, so that the cotton seeds, cotton shells and other materials fallen off the cotton can fall onto the filter plate 13.

[0051] Furthermore, a group of clearance grooves 22 is provided between any two adjacent pulling rings 21, and each group includes a plurality of clearance grooves 22 distributed symmetrically around the axis. In some embodiments, for example Figure 6 and Figure 7 As shown, the number of a group of relief slots 22 is set to six.

[0052] In some embodiments, an air cavity seat 31 is provided in the inner cylinder 30 of the roller screen corresponding to each group of yield grooves 22. The air cavity seat 31 is constructed as a disc-shaped structure. A pulling piece 32 that can move in a radial direction is installed in the air cavity seat 31. The outer edge of the pulling piece 32 that can move in the radial direction has a contact part, and the surface of the contact part is provided with a plurality of evenly distributed needle structures, which can enhance the adhesion with the cotton material.

[0053] Furthermore, in order to control the movement of the pulling piece 32 in the air cavity seat 31, an air cavity 311 for the pulling piece 32 to move is provided in the air cavity seat 31, and connecting tubes 33 are fixedly installed between the multiple air cavity seats 31, so that the multiple air cavities 311 are connected through the connecting tubes 33, and one of the air cavities 311 is connected to an external air pump device through an air guide tube 50, which is used to supply / extract air into the air cavity 311 to drive the pulling piece 32 to move in the air cavity seat 31.

[0054] Among them, the pulling sheet 32 ​​is constructed as a thin sheet structure, and a piston 321 is provided at one end of the pulling sheet 32 ​​away from the contact part, so that the pulling sheet 32 ​​and the air cavity 311 are kept sealed, so that the pulling sheet 32 ​​can be lifted and moved by air pressure, and the depth of the air cavity 311 is the same as the depth of the pulling sheet 32, so that the pulling sheet 32 ​​can be completely retracted into the air cavity 311, and will not affect the rotation of the roller screen inner cylinder 30 on the inner side of the roller screen outer cylinder 20. At the same time, the outer wall of the roller screen inner cylinder 30 is attached to the inner wall of the roller screen outer cylinder 20, preventing small particles of impurities in the cotton material from falling between the roller screen inner cylinder 30 and the roller screen outer cylinder 20.

[0055] In some embodiments, the pulling piece 32 on the roller screen inner tube 30 includes a first position in which the contact portion is contracted into the air cavity seat 31 and a second position in which the contact portion extends out of the air cavity seat 31 and protrudes from the pulling ring 21. The air cavity seat 31 has limiting steps at both the first position and the second position, so that the pulling piece 32 can be driven by gas to reciprocate between the first position and the second position in the air cavity 311.

[0056] Further, when the pulling piece 32 rotates to overlap with the making way slot 22 , the pulling piece 32 is in the second position, and when the pulling piece 32 rotates to between the two making way slots 22 , the pulling piece 32 is in the first position.

[0057] In some embodiments, the period of the overlapping position of the pulling sheet 32 ​​and the giving way groove 22 is calculated according to the relative rotation speed of the roller screen inner cylinder 30 and the roller screen outer cylinder 20, so that when the pulling sheet 32 ​​overlaps with the giving way groove 22, the external air pump device can pump gas into the air cavity 311, so that the pulling sheet 32 ​​is lifted outward and protrudes from the pulling ring 21. In this way, when the pulling ring 21 and the pulling sheet 32 ​​turn in opposite directions, the cotton attached to the outside of the pulling ring 21 can be further pulled to make the particles such as cotton seeds and cotton shells in the cotton fall off.

[0058] like Figure 3 As shown, the screening rope 40 includes an elastic rope 41 and a reel 42 .

[0059] Among them, the elastic rope 41 is arranged parallel to the axis, and both ends are fixed on the rope support 411, the rope support 411 is fixed on the inner wall of the material barrel 10, and the winder 42 is fixedly arranged on the inner wall of the material barrel 10, and the winder 42 can pull and release the elastic rope 41, so that the elastic rope 41 bounces toward the surface of the roller screen cylinder. In this way, by repeatedly pulling / releasing the elastic rope 41, the elastic rope 41 periodically bounces toward the cotton material outside the roller screen cylinder, which can promote the separation of cotton and cotton seeds and other particulate matter in the cotton material. Combined with the mutual pulling of the roller screen inner cylinder 30 and the roller screen outer cylinder 20 on the cotton material, the cotton and cotton seeds and other particulate matter can be screened.

[0060] In some embodiments, a positioning sleeve 422 is fixedly installed on the elastic rope 41, and a pulling rope 421 is fixedly connected to the positioning sleeve 422. An intermittent winding mechanism is provided inside the reel 42. The intermittent winding mechanism can be a combination of a motor, an intermittent gear and a gear shaft. The other end of the pulling rope 421 is fixedly connected to the gear shaft. When the teeth on the intermittent gear on the motor output shaft are engaged, the gear shaft can be driven to rotate and reel in the pulling rope 421. When the intermittent gear rotates to the toothless part, the gear shaft flips and releases the pulling rope 421. In this way, the reel 42 can cyclically pull the elastic rope 41, so that the elastic rope 41 bounces back and forth toward the surface of the roller screen for screening cotton materials.

[0061] Furthermore, the length of the elastic rope 41 is less than or equal to the length of the roller screen, and multiple groups of screening ropes 40 are arranged on the upper side of the roller screen, and the arc interval between each two adjacent screening ropes 40 is set at π / 6~π / 4. By arranging the screening ropes 40 at multiple angles, the cotton material can be hit in multiple directions, thereby promoting the separation of cotton and cotton seeds and other particulate matter in the cotton material.

[0062] like Figure 4 and Figure 5 As shown, a plurality of groups of blowing nozzles 60 are provided on the side of the filter plate 13 along the axial direction, and the blowing nozzles 60 are connected to an external air supply device through an air supply pipe 61, and the direction of the air flow derived from the blowing nozzles 60 is toward the upper surface of the filter plate 13, and the air flow blown out by the blowing nozzles 60 flows at a relatively low wind speed, aiming to screen out the cotton seeds from the cotton husks and cotton stalks, so that the cotton seeds fall from the side of the filter plate 13 to the second material channel below, so that the cotton seeds are separated from other particulate matter, and the third discharge port 103 is externally connected to an exhaust device, and under the action of the air flow ejected from the blowing nozzles 60, the cotton seeds flow obliquely forward, and flow in the second material channel to the third discharge port 103 for discharge and collection.

[0063] Furthermore, a baffle 131 is provided on the upper surface of the filter plate 13 corresponding to the second discharge port 102, and both ends of the baffle 131 extend to the side of the filter plate 13. A group of blowing nozzles 60 are provided on both sides of the filter plate 13 near the baffle 131, and the remaining blowing nozzles 60 are distributed on a single side of the filter plate 13. Particulate matter other than cotton seeds, such as cotton husks, cotton stalks, etc., are blown toward the baffle 131 by the airflow on the filter plate 13 and discharged from the second discharge port 102, thereby achieving the screening of cotton seeds, cotton husks and cotton.

[0064] In some embodiments, the filter plate 13 is configured as an arc plate with an arc of π / 2. The filter plate 13 with this arc, combined with the airflow of a set wind speed, can retain large particles such as cotton shells, cotton stalks, etc. on the filter plate 13, while smaller cotton seeds are blown off from the side by the airflow, thereby achieving a screening effect.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the embodiments is defined by the appended claims and their equivalents.

[0067] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A cotton seed screening device for cotton material, characterized in that: include: A material barrel (10) with an axis arranged in a horizontal direction, a feed port (11) being provided at the top of one end of the material barrel (10) and a discharge port being provided at the bottom of the other end; A roller screen cylinder, arranged inside the material cylinder (10) and capable of rotating around the axis of the material cylinder (10); A sifting rope (40) is fixedly arranged inside the material cylinder (10) and is capable of sifting the cotton seed material on the surface of the roller sieve cylinder; A driver (01) is fixedly arranged on the outer side wall of the material cylinder (10) and is used to drive the roller screen cylinder to rotate; Wherein, an arc-shaped filter plate (13) is provided inside the material barrel (10) corresponding to the lower side of the roller screen drum, a first material channel is provided between the filter plate (13) and the roller screen drum, a second material channel is provided between the filter plate (13) and the material barrel (10), the discharge port comprises a third discharge port (103), a second discharge port (102) and a first discharge port (101) sequentially arranged along the material conveying direction, the third discharge port (103) is communicated with the second material channel, the second discharge port (102) is communicated with the first material channel, and the first discharge port (101) is located outside the ends of the filter plate (13) and the roller screen drum; The roller screen cylinder comprises a roller screen outer cylinder (20), the roller screen outer cylinder (20) is arranged in the material cylinder (10), and is driven by the driver (01) to rotate around a first direction; the roller screen outer cylinder (20) comprises a screening area (201) and a separation area (202) arranged in sequence along the material conveying direction, and a plurality of pulling rings (21) are fixedly provided on the outer wall of the roller screen outer cylinder (20) corresponding to the screening area (201) along the axial direction, the pulling rings (21) protrude from the outer wall of the roller screen outer cylinder (20), and the plurality of pulling rings (21) are distributed in a spiral shape around the axis; The roller screen cylinder further comprises a roller screen inner cylinder (30), the roller screen inner cylinder (30) being arranged on the inner side of the roller screen outer cylinder (20) and being driven by the driver (01) to rotate around a second direction, the first direction being opposite to the second direction; a group of clearance grooves (22) is arranged between any two adjacent pulling rings (21), each group comprising a plurality of clearance grooves (22) centrally symmetrically distributed around the axis, an air cavity seat (31) is arranged in the roller screen inner cylinder (30) corresponding to each group of clearance grooves (22), a pulling piece (32) movable in a radial direction is installed in the air cavity seat (31), and the outer edge of the pulling piece (32) movable in the radial direction has a contact portion; The pulling piece (32) on the roller screen inner cylinder (30) includes a first position in which the contact portion is retracted into the air cavity seat (31) and a second position in which the contact portion extends out of the air cavity seat (31) and protrudes from the pulling ring (21), and when the pulling piece (32) is rotated to overlap with the clearance groove (22), the pulling piece (32) is in the second position, and when the pulling piece (32) is rotated to between the two clearance grooves (22), the pulling piece (32) is in the first position.

2. The cotton seed screening device for cotton material according to claim 1, characterized in that: The separation zone (202) is arranged between the first discharge port (101) and the second discharge port (102), and the screening zone (201) is arranged between the feed port (11) and the second discharge port (102).

3. The cotton seed screening device for cotton material according to claim 1, characterized in that: An air cavity (311) for the pulling piece (32) to move is provided in the air cavity seat (31), and connecting tubes (33) are fixedly installed between the plurality of air cavity seats (31), so that the plurality of air cavities (311) are connected via the connecting tubes (33), and one of the air cavities (311) is connected to an external air pump device via an air guide tube (50) for supplying / extracting air into the air cavity (311) so as to drive the pulling piece (32) to move in the air cavity seat (31).

4. The cotton seed screening device for cotton material according to claim 1, characterized in that: A support ring seat (14) and a support shaft (15) are fixedly provided inside the material cylinder (10); the support ring seat (14) is arranged on the outer wall of one end of the roller screen outer cylinder (20); the support shaft (15) is arranged on the other end of the roller screen outer cylinder (20); bearings are installed at the connection between the roller screen outer cylinder (20) and the support ring seat (14) and the support shaft (15); a bearing is installed at the connection between the roller screen inner cylinder (30) and the roller screen outer cylinder (20); and one end of the roller screen inner cylinder (30) protrudes from the roller screen outer cylinder (20); A transmission gear set (02) is provided inside the material cylinder (10) at locations corresponding to the roller screen outer cylinder (20) and the roller screen inner cylinder (30); the output end of the driver (01) is in transmission connection with the transmission gear set (02), and drives the roller screen outer cylinder (20) to rotate about the first direction and drives the roller screen inner cylinder (30) to rotate about the second direction.

5. The cotton seed screening device for cotton material according to claim 1, characterized in that: The screening rope (40) comprises: An elastic rope (41) is arranged parallel to the axis, and both ends are fixed to a rope support (411), and the rope support (411) is fixed to the inner wall of the material barrel (10); A reel (42) is fixedly arranged on the inner wall of the material cylinder (10), and the reel (42) can pull and release the elastic rope (41) so that the elastic rope (41) bounces toward the surface of the roller screen cylinder; A positioning sleeve (422) is fixedly mounted on the elastic rope (41), a pulling rope (421) is fixedly connected to the positioning sleeve (422), an intermittent winding mechanism is provided inside the reel (42), and the other end of the pulling rope (421) is fixedly connected to the intermittent winding mechanism, so that the reel (42) can cyclically pull the elastic rope (41), so that the elastic rope (41) reciprocates toward the surface of the roller screen.

6. The cotton seed screening device for cotton material according to claim 5, characterized in that: The length of the elastic rope (41) is less than or equal to the length of the roller screen drum, and a plurality of groups of the beating ropes (40) are arranged on the upper side of the roller screen drum, and the arc interval between each two adjacent beating ropes (40) is set at π / 6 to π / 4.

7. The cotton seed screening device for cotton material according to claim 1, characterized in that: A plurality of groups of air blowing nozzles (60) are provided on the side of the filter plate (13) along the axial direction; the air blowing nozzles (60) are connected to an external air supply device via an air supply pipe (61); and the direction of the air flow derived from the air blowing nozzles (60) is toward the upper surface of the filter plate (13).

8. The cotton seed screening device for cotton material according to claim 7, characterized in that: A baffle (131) is provided on the upper surface of the filter plate (13) corresponding to the second discharge port (102), and both ends of the baffle (131) extend to the side of the filter plate (13). A group of air blowing nozzles (60) are provided on both sides of the filter plate (13) close to the baffle (131), and the remaining air blowing nozzles (60) are distributed on a single side of the filter plate (13).

9. The cotton seed screening device for cotton material according to claim 1, characterized in that: The filter plate (13) is configured as an arc-shaped plate with an arc of π / 2.

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