Dust removal system for banbury mixer feed port

Abstract

The application discloses a kind of internal mixer material port back material dust removal systems, including dust removal cylinder, exhaust fan, back material box and cyclone, at least one first filter plate is provided in the inner cavity of back material box, the back material port of the gas collection hood that can be connected to internal mixer is provided at the bottom of back material box, cyclone is arranged in the inner cavity of dust removal cylinder, cyclone is configured to be able to promote airflow to do rotating centrifugal motion in dust removal cylinder;The detour bending action of first filter plate in back material box to flow channel makes raw material particles in airflow collide with first filter plate and fall down, and reenters internal mixer through back material port, so as to achieve the purpose of automatically recycling raw material particles, and the back material dust removal system is also designed dust removal cylinder, and is connected to back material box, utilizes the rotating centrifugal action of cyclone in dust removal cylinder to airflow, reduces the running speed of dust, so as to make it fall into dust collection port, so that the purpose of raw material particle recovery can be achieved while achieving the purpose of dust removal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of internal mixer, in particular to a kind of internal mixer material port back material dust removal system. BACKGROUND

[0002] In the production process of cable material, internal mixer needs to be used. In the internal mixing production process of cable material, when pouring or adding raw materials into the internal mixer, dust is easily caused, which pollutes the working environment. Therefore, a gas collection hood is generally designed on the internal mixer, and the splashed dust is removed by negative pressure suction to ensure the air quality of the production site. However, in actual application, due to the vacuum suction factor, some raw material particles may be sucked away together with the dust. The raw material particles sucked away are mixed with the dust and treated as garbage, and cannot be effectively recycled. This causes waste of raw materials and increases production cost. Therefore, it is necessary to design a back material dust removal system that can achieve the purposes of dust removal and raw material particle recycling. SUMMARY

[0003] In view of the deficiencies in the prior art, in order to achieve the purposes of dust removal and raw material particle recycling in the production process of cable material, the purpose of the present application is to provide an internal mixer material port back material dust removal system.

[0004] The technical scheme adopted by the present application to solve the problem is:

[0005] An internal mixer material port back material dust removal system, comprising a dust removal cylinder and an air suction machine capable of forming a negative pressure airflow in the inner cavity of the dust removal cylinder, the dust removal cylinder is connected to the gas collection hood of the internal mixer through a pipeline, the negative pressure port of the air suction machine is connected to the dust removal cylinder, and further comprising a back material box and a cyclone, the back material box is horizontally and transversely arranged and installed in the pipeline between the dust removal cylinder and the gas collection hood, at least one first filter plate is arranged in the inner cavity of the back material box, at least part of the plate surface of the first filter plate is in the flow passage of the airflow in the inner cavity of the back material box, a back material port capable of connecting the gas collection hood of the internal mixer is arranged at the bottom of the back material box, the back material port is located below the first filter plate, the cyclone is arranged in the inner cavity of the dust removal cylinder, the cyclone is configured to promote the rotational centrifugal motion of the airflow in the dust removal cylinder, the bottom of the cyclone has a drop port, so that the dust in the airflow running in the cyclone falls and leaves the cyclone after being impacted and rubbed by the side wall of the cyclone, and a dust collection port is arranged at the bottom of the dust removal cylinder, the dust collection port is located below the drop port.

[0006] The material port back feeding dust removal system disclosed in the application achieves the purposes of automatic recovery of raw material particles and dust removal through the design of a back feeding box, a first filter plate in the back feeding box, a dust removal cylinder and a cyclone in the dust removal cylinder.

[0007] Further, two opposite side walls of the back feeding box are respectively provided with an air inlet and an air outlet, the air inlet is connected with the gas collecting hood of the internal mixer through a pipeline, and the air outlet is connected with the dust removal cylinder through a pipeline; a flow channel for air flow is formed between the air inlet and the air outlet, the first filter plate is arranged between the air inlet and the air outlet, the bottom of the first filter plate is lower than the bottom of the air inlet, the top of the first filter plate is lower than the inner wall of the top of the back feeding box, and a gap is formed between the bottom of the first filter plate and the inner wall of the back feeding box where the air inlet is arranged, so that raw material particles can enter the back feeding port through the gap

[0008] Further, a second filter plate is arranged between the first filter plate and the air inlet, the second filter plate is arranged in a form of inclination from top to bottom towards the first filter plate, and the top of the second filter plate is higher than the top of the air inlet.

[0009] Further, the top of the first filter plate is higher than the bottom of the second filter plate.

[0010] A plurality of filter holes are arranged on the first filter plate and the second filter plate.

[0011] The first filter plate is in the form of a circular arc plate, and the center of curvature of the first filter plate is arranged close to the air inlet.

[0012] The second filter plate is in the form of a flat plate.

[0013] Further, the number of the first filter plate and the second filter plate is two, and the two first filter plates and the two second filter plates are arranged in the back feeding box in a spaced manner; a flow guide plate is arranged at the bottom of the air outlet, and the end of the flow guide plate away from the air outlet extends to the surface of the first filter plate closest to the air outlet.

[0014] Further, the cyclone includes a filter cloth, which is in a shape of a spiral winding and is arranged in the dust removal cylinder;

[0015] Any adjacent cloth surfaces in the shape of a spiral winding in the filter cloth have gaps therebetween to form flow channels for the airflow to make rotational centrifugal motion;

[0016] A space between a cloth end portion at an outermost periphery in the filter cloth and a cloth surface adjacent to the cloth end portion forms a cyclone inlet of the cyclone, a cylinder inlet pipe is arranged on a side wall of the dust removal cylinder, an outer pipe section of the cylinder inlet pipe is connected to a pipeline, and an end portion of an inner pipe section of the cylinder inlet pipe is located at a position where the cyclone inlet is located;

[0017] A top opening of a space surrounded by a cloth end portion at an innermost periphery in the filter cloth and a cloth surface adjacent to the cloth end portion forms a cyclone outlet of the cyclone, a cylinder outlet pipe is arranged at a top portion of the dust removal cylinder, and the cylinder outlet pipe is connected to the cyclone outlet;

[0018] A bottom opening of the filter cloth in the shape of a spiral winding forms the falling opening.

[0019] Further, the dust removal cylinder includes a cylinder body and a cylinder cover capable of being sealingly arranged at a top portion of the cylinder body, the cyclone is arranged in an inner cavity of the cylinder body, and the cylinder inlet pipe is shaped on an outer wall of the cylinder body;

[0020] A closed bottom plate is shaped at a bottom portion of the cylinder cover, a bottom surface of the closed bottom plate is configured to be capable of completely covering a cross section of the filter cloth perpendicular to a rotation center axis of the filter cloth in the shape of a spiral winding, and the closed bottom plate abuts against a top portion of the filter cloth in the shape of a spiral winding when the cylinder cover is sealingly assembled on the cylinder body;

[0021] The cylinder outlet pipe is arranged at a middle portion of the cylinder cover, a bottom pipe section of the cylinder outlet pipe extends out of the closed bottom plate, and the bottom pipe section of the cylinder outlet pipe extends into the cyclone outlet when the cylinder cover is sealingly assembled on the cylinder body.

[0022] Further, the cyclone further includes an upper support having an upper shaping strip in the shape of a spiral winding, cloth edges at a top portion of the filter cloth are arranged on the upper shaping strip along an outer shape of the upper shaping strip, so that the filter cloth is in the shape of a spiral winding;

[0023] Upper fixing blocks are arranged at an outer periphery of a side wall of the upper shaping strip at intervals, inner side walls of the cylinder body are provided with fixing clamping grooves corresponding to the upper fixing blocks, and the upper fixing blocks are arranged in the fixing clamping grooves.

[0024] Further, the cyclone further includes a lower support having a lower shaping strip in the shape of a spiral winding, cloth edges at a bottom portion of the filter cloth are arranged on the lower shaping strip along an outer shape of the lower shaping strip.

[0025] The lower fixing blocks are arranged on the side wall of the lower setting strip periphery at intervals, the inner side wall of the cylinder is provided with a plurality of sliding clamping grooves corresponding to the lower fixing blocks, and the lower fixing blocks are arranged at the bottom of the sliding clamping grooves;

[0026] The fixed clamping groove is directly above the sliding clamping groove along the axial direction of the cylinder, and the groove width of the fixed clamping groove is greater than that of the sliding clamping groove, and the groove cavity of the sliding clamping groove extends into the groove cavity of the fixed clamping groove along the axial direction of the cylinder.

[0027] Further, a rod segment capable of penetrating the side wall of the cylinder is movably arranged on the cylinder, a vibration bracket is arranged on the outer side wall of the cylinder, the vibration rod is slidably arranged in the vibration bracket, a top disc is arranged on the rod segment outside the cylinder, a vibration spring is sleeved on the vibration rod, the two ends of the vibration spring are respectively abutted against the top disc and the vibration bracket, and the end of the rod segment inside the cylinder is in contact with the side wall of the lower setting strip.

[0028] In summary, the internal mixer material port return dust removal system has the following technical effects:

[0029] 1) The internal mixer material port return dust removal system is designed with a return box and a dust removal cylinder, the first filter plate in the return box is used to make the raw material particles in the airflow collide with the first filter plate and fall down through the meandering and bending effect of the flow channel, so as to achieve the purpose of automatically recycling the raw material particles, and the cyclone in the dust removal cylinder is used to make the dust in the airflow collide and rub with the side wall of the cyclone when passing through the cyclone, so as to reduce the running speed of the dust and make it fall into the dust collection port below the cyclone, so as to achieve the purpose of dust removal, thereby achieving the purpose of dust removal and raw material particle recycling;

[0030] 2) The meandering and staggered arrangement of the first and second filter plates can make the air fully contact and collide with the first and second filter plates during operation, further improving the filtering effect of the raw material particles;

[0031] 3) The design of the closed bottom plate on the cylinder cover can ensure that the airflow can completely flow through the entire rotary winding structure formed by the filter cloth, so as to achieve the purpose of optimal filtering effect;

[0032] 4) The vibrating rod shakes off the dust adhering to the filter cloth, ensuring timely dust collection and maintaining the dust adsorption effect of the filter cloth. It is simple and quick to operate, requiring no disassembly or cleaning. Simply operate the vibrating rod a few times periodically during system operation to quickly remove the dust adhering to the filter cloth. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the internal mixer feed inlet dust removal system according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the recycling bin according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the internal structure of the recycling bin according to an embodiment of the present invention;

[0036] Figure 4 This is an exploded view of the recycling bin according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the dust collector cylinder according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the internal structure of the dust collector cylinder according to an embodiment of the present invention;

[0039] Figure 7 for Figure 5 Sectional view along the middle AA direction;

[0040] Figure 8 This is an exploded view of the dust collector cylinder after the hydrocyclone is assembled according to an embodiment of the present invention;

[0041] Figure 9 for Figure 8 A breakdown diagram from a second-person perspective;

[0042] Figure 10 This is a schematic diagram of the structure of the cylindrical body according to an embodiment of the present invention;

[0043] Figure 11 This is a three-dimensional structural diagram of the upper support from the bottom view of an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the lower support structure according to an embodiment of the present invention;

[0045] Figure 13 for Figure 12 Sectional view along the BB direction;

[0046] Figure 14 This is a schematic diagram of the structure of the dust collection rubber pad described in an embodiment of the present invention.

[0047] Wherein, the reference signs have the following meanings:

[0048] 1, dust removal cylinder; 101, cylinder body; 1011, cylinder inlet pipe; 1012, dust collection port; 1013, fixed clamping groove; 1014, sliding clamping groove; 1015, vibration rod; 1016, vibration support; 1017, top disc; 1018, vibration spring; 102, cylinder cover; 1021, cylinder outlet pipe; 1022, closed bottom plate;

[0049] 2, return material box; 201, return material port; 202, air inlet; 203, air outlet; 204, guide plate; 205, return material pipe; 206, check rubber pad; 207, communication port; 208, box body; 209, box cover; 210, first insertion slot; 211, second insertion slot; 3, first filter plate; 4, second filter plate;

[0050] 5, filter cloth; 501, cyclone inlet; 502, cyclone outlet; 503, falling port; 6, upper support; 601, upper shaping strip; 602, upper fixed block; 7, lower support; 701, lower shaping strip; 702, lower fixed block; 8, buffer; 801, first buffer rod; 802, second buffer rod; 803, buffer spring; 9, dust collection check valve; 901, dust collection rubber pad; 902, closed panel; 10, filter hole; 11, gas collection cover. DETAILED DESCRIPTION

[0051] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0052] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0054] Reference Figures 1 to 14The embodiment discloses a material return dust removal system of an internal mixer, which comprises a dust removal cylinder 1 and an air draught fan capable of forming a negative pressure airflow in the inner cavity of the dust removal cylinder 1 (the air draught fan and the installation thereof are prior art, and thus the drawing does not show), the dust removal cylinder 1 is connected with the gas collecting hood of the internal mixer through a pipeline, and the negative pressure port of the air draught fan is connected with the dust removal cylinder 1, wherein the material return dust removal system further comprises a material return box 2 and a cyclone, the material return box 2 is horizontally and transversely arranged and is arranged in the pipeline between the dust removal cylinder 1 and the gas collecting hood, at least one first filter plate 3 is arranged in the inner cavity of the material return box 2 in an inclined manner, at least part of the plate surface of the first filter plate 3 is located in the flow channel of the airflow in the inner cavity of the material return box 2, a material return port 201 capable of being connected with the gas collecting hood 11 of the internal mixer is arranged at the bottom of the material return box 2, the material return port 201 is located below the first filter plate 3, the cyclone is arranged in the inner cavity of the dust removal cylinder 1, the cyclone is configured to promote the airflow in the dust removal cylinder 1 to perform a rotating centrifugal motion, the bottom of the cyclone is provided with a falling port 503, so that the dust in the airflow running in the cyclone falls and leaves the cyclone after the speed of the dust is reduced through the impact and friction of the dust with the side wall of the cyclone, and the bottom of the dust removal cylinder 1 is provided with a dust collecting port 1012, the dust collecting port 1012 is located below the falling port 503.

[0055] The material return dust removal system disclosed by the embodiment promotes the raw material particles in the airflow to collide with the first filter plate 3 and fall down through the meandering effect of the first filter plate 3 on the flow channel in the material return box 2, and the raw material particles fall into the internal mixer through the material return port 201, so that the purpose of automatically recycling the raw material particles is achieved, and the dust removal system further promotes the dust in the airflow to collide with the side wall of the cyclone through the rotating centrifugal effect of the cyclone on the airflow in the dust removal cylinder 1 when the dust passes through the cyclone, so that the speed of the dust is reduced, the dust falls into the dust collecting port 1012 below the cyclone, and the purpose of dust removal is achieved, so that the purpose of dust removal and raw material particle recycling is achieved.

[0056] Referring to Figures 2 to 4 The two opposite side walls of the material return box 2 are respectively provided with an air inlet 202 and an air outlet 203, the air inlet 202 is connected with the gas collecting hood of the internal mixer through a pipeline, and the air outlet 203 is connected with the dust removal cylinder 1 through a pipeline; the cavity between the air inlet 202 and the air outlet 203 forms a flow channel for the airflow, the first filter plate 3 is arranged between the air inlet 202 and the air outlet 203, the bottom of the first filter plate 3 is lower than the bottom of the air inlet 202, the top of the first filter plate 3 is lower than the top inner wall of the material return box 2, and the bottom of the first filter plate 3 and the inner wall of the material return box 2 where the air inlet 202 is located have a gap, so that the raw material particles enter the material return port 201 through the gap. In actual application, it should be understood that the weight of the raw material particles is generally greater than that of the dust particles.

[0057] When the filtering and recycling operation of the raw material particles is performed, the air carrying the dust and the raw material particles enters the inner cavity of the return bin 2 through the air inlet 202. Since the first filter plate 3 is arranged in a downward inclination between the air inlet 202 and the air outlet 203, and the bottom of the first filter plate 3 is lower than the bottom of the air inlet 202, and the space between the first filter plate 3 and the inner wall of the top of the return bin 2 forms an air flow channel, the overall flow channel of the air in the return bin 2 becomes tortuous. Therefore, when the air moves in the direction of the air outlet 203 under the action of negative pressure, it will be diverted upward by the first filter plate 3, so that the raw material particles with relatively large weight in the air will impact the first filter plate 3 and fall down, and then return to the internal mixer through the return port 201, without manual collection and recycling, so as to achieve the purpose of automatic recycling of raw material particles, improve work efficiency, reduce raw material waste, and reduce production cost. The dust with relatively small weight will continue to move under the action of wind and enter the dust removal cylinder 1 through the air outlet 203 for dust removal process.

[0058] Referring to Figure 4 The second filter plate 4 is arranged between the first filter plate 3 and the air inlet 202, and is arranged in a downward inclination close to the first filter plate 3, and the top of the second filter plate 4 is higher than the top of the air inlet 202. The second filter plate 4 can further tortuously bend the flow channel of the air, so that the raw material particles with relatively large weight carried in the air can better impact the first filter plate 3 and the second filter plate 4, so as to further improve the filtering effect.

[0059] The top of the first filter plate 3 is higher than the bottom of the second filter plate 4, so as to avoid the air entering through the flow channel at the top of the first filter plate 3 directly leaving, so as to further tortuously bend the air in the running process, so as to achieve the purpose of fully contacting and impacting the first filter plate 3 and the second filter plate 4, and further improve the filtering effect of the raw material particles;

[0060] A plurality of filter holes 10 are arranged on the first filter plate 3 and the second filter plate 4, so as to improve the passing property of the dust. Specifically, the size of the filter holes 10 can be set to be smaller than the minimum standard particle size of the raw material particles according to the standard particle size of the raw material particles, so as to improve the passing property of the dust while further ensuring the filtering effect of the raw material particles;

[0061] The first filter plate 3 is in the form of a circular arc plate, and the center of curvature of the first filter plate 3 is arranged close to the air inlet 202. The circular arc plate-shaped first filter plate 3 can ensure the smoothness of the air flow direction;

[0062] The second filter plate 4 is in a flat plate shape, which is beneficial to play a role of disturbing flow and improving the impact effect between the raw material particles in the air and the first filter plate 3.

[0063] In other embodiments, the return box 2 comprises a top-opened box body 208 and a box cover 209, the box cover 209 is sealingly installed on the top of the box body 208, and plays a role of facilitating the maintenance and cleaning of the first and second filter plates in the return box 2.

[0064] Preferably, referring to Figure 4 , the two opposite inner side walls of the return box 2 are each provided with a first slot 210, which is matched with the first filter plate 3 to achieve the purpose of installing the first filter plate 3.

[0065] In other embodiments, the two opposite inner side walls of the return box 2 are each provided with a second slot 211, which is matched with the second filter plate 4 to achieve the purpose of installing the second filter plate 4.

[0066] The number of the first filter plate 3 and the second filter plate 4 is two, and the two first filter plates 3 and the second filter plates 4 are arranged in the return box 2 to further achieve the purpose of winding the flow channel of the air flow; the bottom of the air outlet 203 is provided with a flow guide plate 204, the end of the flow guide plate 204 away from the air outlet 203 extends to the surface of the first filter plate 3 closest to the air outlet 203, so that the space between the bottom of the first filter plate 3 closest to the air outlet 203 and the bottom of the air outlet 203 is closed, so as to avoid the situation that the air directly enters the air outlet 203 without flowing through the surface of the filter plate, and to avoid air shunting, so that the air can only enter the air outlet 203 through the flow channel formed between the top of the first filter plate 3 closest to the air outlet 203 and the inner wall of the top of the return box 2, so that the air can run in the inner cavity of the return box 2 to achieve the purpose of contacting and impacting the first and second filter plates as much as possible, so as to ensure the sufficient filtering effect of the raw material particles.

[0067] Preferably, referring to Figure 1The return material box 2 further comprises a return material pipe 205 and a check rubber pad 206. One end of the return material pipe 205 is connected with the return material port 201, and the other end is arranged on the gas collecting cover of the internal mixer. The bottom of the gas collecting cover is the feeding port of the internal mixer. In this way, the automatic recycling of the filtered raw material particles in the return material box 2 can be realized. The check rubber pad 206 is arranged on the inner wall of the gas collecting cover of the internal mixer, and the check rubber pad 206 is arranged to cover the communication port 207 of the return material pipe 205 on the gas collecting cover. In this way, the check rubber pad 206 can play a role of one-way closing the communication port 207 of the return material pipe 205 and the gas collecting cover. When the dust removal operation is performed, the air suction machine is started, and the inner cavity of the return material box 2 forms a negative pressure compared with the gas collecting cover, so that the check rubber pad 206 is adsorbed on the inner wall of the gas collecting cover, thereby achieving the purpose of closing the communication port, avoiding the air carrying dust from the return material pipe 205 into the return material box 2, and improving the operation stability of the return material box. When the return material pipe 205 accumulates enough heavy raw material particles, the check rubber pad 206 will be pushed away, thereby achieving the purpose of automatic return of material.

[0068] In the embodiment, referring to Figure 8 and Figure 9 , the cyclone comprises a filter cloth 5 arranged in the dust removal cylinder 1 in a rotary winding manner. Any adjacent cloth surfaces in the filter cloth 5 in the rotary winding manner have gaps therebetween to form flow channels for the rotation and centrifugal motion of the air flow. When the air flow runs in the flow channels in the rotary winding manner, the dust particles carried in the air flow collide and rub against the cloth surfaces of the filter cloth 5 under the action of the centrifugal force to reduce the speed or fall down, or adhere to the cloth surfaces of the filter cloth 5, thereby achieving the purpose of filtering the dust in the air flow.

[0069] The space between the outermost cloth end of the filter cloth 5 and the adjacent cloth surface forms a cyclone inlet 501 of the cyclone. A cylinder inlet pipe 1011 is arranged on the side wall of the dust removal cylinder 1. The outer pipe section of the cylinder inlet pipe 1011 is connected with a pipeline, and the end of the inner pipe section of the cylinder inlet pipe 1011 is located at the position of the cyclone inlet 501. Preferably, the running direction of the air flow at the outlet end of the cylinder inlet pipe 1011 is parallel to the direction of the cyclone inlet 501, that is, the cylinder inlet pipe 1011 is tangentially connected with the cyclone inlet 501 to achieve better flow smoothness of the air flow.

[0070] The top opening of the space between the innermost cloth end of the filter cloth 5 and the adjacent cloth surface forms a cyclone outlet 502 of the cyclone. A cylinder outlet pipe 1021 is arranged on the top of the dust removal cylinder 1, and the cylinder outlet pipe 1021 is connected with the cyclone outlet 502.

[0071] The filter cloth 5 forms a bottom opening of the falling opening 503 in a rotary winding shape. After the dust collides with the cloth surface of the filter cloth 5, the dust slows down and falls from the bottom of the filter cloth 5 out of the rotary winding structure, that is, falls from the cyclone outlet 502 to the dust collecting opening 1012, thereby achieving the dust removal purpose.

[0072] Referring to Figures 5 to 9 , the dust removal cylinder 1 includes a cylinder body 101 and a cylinder cover 102 capable of being sealingly arranged at the top of the cylinder body 101. The cyclone is arranged in the inner cavity of the cylinder body 101. The cylinder inlet pipe 1011 is formed on the outer wall of the cylinder body 101. The cylinder inlet pipe 1011 serves as the gas inlet of the cylinder body 101. In some embodiments, the cross section of the cylinder inlet pipe 1011 gradually increases along the running direction of the gas flow. In this way, the gas speed before entering the cyclone can be reduced. The gas flow enters the rotary winding structure formed by the filter cloth 5 at a lower speed, which is more conducive to improving the full contact effect between the gas flow and the cloth surface of the filter cloth 5. In addition, it is also conducive to dispersing the running space of the gas flow, thereby increasing the contact area between the gas flow and the cloth side wall of the filter cloth 5, so as to further improve the filtering effect.

[0073] The bottom of the cylinder cover 102 is formed with a closed bottom plate 1022. The bottom surface of the closed bottom plate 1022 is configured to completely cover the cross section of the filter cloth 5 perpendicular to the rotary center axis when the filter cloth 5 is in a rotary winding shape. When the cylinder cover 102 is sealingly assembled on the cylinder body 101, the closed bottom plate 1022 abuts against the top of the filter cloth 5 when the filter cloth 5 is in a rotary winding shape, so as to close the top opening of the flow channel formed between the cloth upper edges of the filter cloth 5 when the filter cloth 5 is in a rotary winding shape. In this way, the gas flow is prevented from directly flowing out of the cylinder outlet pipe 1021 without complete rotational centrifugal motion, so as to ensure the filtering effect.

[0074] The cylinder outlet pipe 1021 is arranged at the middle part of the cylinder cover 102, and the bottom pipe section of the cylinder outlet pipe 1021 extends out of the closed bottom plate 1022. When the cylinder cover 102 is sealingly assembled on the cylinder body 101, the bottom pipe section of the cylinder outlet pipe 1021 extends into the cyclone outlet 502. In this way, the cylinder outlet pipe 1021 directly extends into the cloth inner ring (i.e., the cyclone outlet 502) surrounded by the innermost cloth end part of the filter cloth 5, and the edge openings formed by the winding of the cloth upper edges are closed by the closed bottom plate 1022. In this way, in combination with the cylinder inlet pipe 1011 arranged in the cyclone inlet 501, the gas flow can completely flow through the rotary winding structure formed by the filter cloth 5, so as to achieve the purpose of optimal filtering effect.

[0075] Referring to Figure 8 , Figure 10 and Figure 11, the cyclone further comprises an upper support 6, the upper support 6 has an upper shaping strip 601 in the shape of a spiral winding, the cloth edges on the top of the filter cloth 5 are arranged along the shape of the upper shaping strip 601, so that the filter cloth 5 is in the shape of a spiral winding. Since the filter cloth 5 is flexible, by designing the upper shaping strip 601 and arranging the upper shaping strip 601 in the shape of a spiral winding, after the filter cloth is arranged along the shape of a spiral winding, the filter cloth 5 can be in the shape of a spiral winding. In this way, when the airflow enters from the gap between the outermost end of the filter cloth 5 and the cloth side wall adjacent to the outermost end, the airflow will do spiral centrifugal motion under the influence of the structure of the filter cloth 5, at this time, the dust carried by the airflow will continuously collide or rub with the cloth surface of the filter cloth 5, so as to reduce the running speed of the dust and make the dust fall down or adhere to the outer surface of the filter cloth 5, thereby achieving the purpose of removing the dust in the airflow. In addition, the filter cloth 5 is arranged in the shape of a spiral winding, and the airflow moves between the inner and outer cloth adjacent to the filter cloth 5. In this way, even if the filter cloth 5 is covered with dust, the filter cloth 5 will not affect the flow of the airflow, that is, the filter cloth 5 is arranged in the shape of a spiral winding, which can not only achieve the purpose of filtering the dust in the airflow, but also achieve the purpose that the structure will not hinder the normal operation of the airflow when covered with dust, ensure the normal use of the system, effectively prolong the normal maintenance time of the system, reduce the number of shutdown maintenance, reduce the maintenance cost, and the cyclone uses the filter cloth as the main structure, which can use the commercially available filter cloth that meets the working condition requirements, is easy to obtain, has low cost, and only needs to take out the filter cloth to clean the dust adhered to the filter cloth during maintenance, which is convenient and fast, simple to operate and easy to maintain.

[0076] Specifically, in the embodiment, after the upper edge of the filter cloth 5 is installed on the upper support 6 and the closure cylinder cover 102 is closed, the closure bottom plate 1022 abuts against the upper surface of the upper shaping strip 601, so as to achieve the purpose of closing the top opening of the flow channel formed between the cloth upper edges of the filter cloth 5 in the shape of a spiral winding

[0077] The side wall of the periphery of the upper shaping strip 601 is provided with a plurality of upper fixing blocks 602, and the inner side wall of the cylinder body 101 is provided with a plurality of fixing clamping grooves 1013 corresponding to the upper fixing blocks 602, and the upper fixing blocks 602 are arranged in the fixing clamping grooves 1013.

[0078] Referring to Figure 8 , Figure 9 , Figure 10 and Figure 12The cyclone further comprises a lower support 7, which has a lower shaping strip 701 in the shape of a spiral winding, and the cloth edge of the bottom of the filter cloth 5 is arranged along the contour of the lower shaping strip 701, so that, in combination with the spiral winding shaping effect of the upper shaping strip 601 on the filter cloth 5, the upper and lower edges of the filter cloth 5 are spirally wound and shaped, so that the filter cloth 5 can present a stable spiral winding structure during the dust filtering operation, thereby ensuring the stable operation of the filtering and dust removal operation, and achieving the purpose of ensuring the stability of the system operation. In some cases, in order to further ensure the structural stability of the filter cloth 5 during the filtering operation, a counterweight can be added to the lower support 7, or the lower support 7 itself can be designed to be heavier, or a support rod can be designed between the upper support 6 and the lower support 7, which limits the structure of the two supports to approach each other, so as to straighten and tension the filter cloth 5, thereby further ensuring the structural stability of the filter cloth 5. Among them, the specific arrangement mode between the filter cloth 5 and the lower shaping strip 701 can adopt the existing clamping, clamping or adhering fixing form, and in this embodiment, any structure that can stably connect the two together can be applied, and no more details are described here. For the stability of the spiral winding structure of the upper and lower shaping strips themselves, a support strip can be designed between the adjacent inner and outer peripheral side walls.

[0079] Preferably, a plurality of lower fixing blocks 702 are arranged on the peripheral side wall of the lower shaping strip 701, and the inner side wall of the cylinder 101 is provided with a plurality of sliding grooves 1014 corresponding to the lower fixing blocks 702, and the lower fixing blocks 702 are arranged at the bottom of the sliding grooves 1014. When installing and fixing the filter cloth 5 in the cylinder 101, the lower fixing blocks 702 on the lower support 7 assembled therewith are only needed to be slid down to the bottom of the sliding grooves 1014 and fixed, so as to achieve the purpose of fixing and installing the lower shaping strip 701 on the cylinder 101, which is simple, fast and convenient to operate. At the same time, pulling the filter cloth 5 along the sliding grooves can achieve the purpose of washing the filter cloth 5, which is beneficial to improving the disassembly and maintenance efficiency.

[0080] Specifically, in the present embodiment, the rotary winding shape of the lower fixing strip 701 is designed to be consistent with the rotary winding shape of the upper fixing strip 601, the fixed clamping groove 1013 is directly above the sliding clamping groove 1014 along the axial direction of the cylinder 101, and the slot width of the fixed clamping groove 1013 is greater than the slot width of the sliding clamping groove 1014, so as to avoid the upper fixing strip 601 from sliding into the sliding clamping groove 1014, so as to achieve the purpose of ensuring the structural stability of the installation of the upper support 6. The slot cavity of the sliding clamping groove 1014 extends into the slot cavity of the fixed clamping groove 1013 along the axial direction of the cylinder 101, and the assembly position of the upper fixing block 602 and the lower fixing block 702 is further limited along the axial direction of the cylinder 101. The projections of the upper fixing strip 601 and the lower fixing strip 701 along the axial direction of the cylinder 101 are coincident. The design of the position structure between the fixed clamping groove and the sliding clamping groove can achieve the purpose of ensuring that the installed filter cloth 5 will not have self-twisting problems, so as to further achieve the purpose of ensuring the structural stability of the filter cloth 5 in the rotary winding state.

[0081] In other embodiments, see Figure 7The vibration rod 1015 is movably arranged on the barrel 101 and can penetrate the side wall of the barrel 101. A handle is arranged on the outer side of the vibration rod 1015 away from the barrel, so as to be held by a worker. A vibration support 1016 is arranged on the outer side wall of the barrel 101. The vibration rod 1015 is slidably arranged in the vibration support 1016. A top disc 1017 is arranged on the rod segment of the vibration rod 1015 outside the barrel 101. A vibration spring 1018 is sleeved on the vibration rod 1015. The two ends of the vibration spring 1018 abut against the top disc 1017 and the vibration support 1016 respectively. The end of the rod segment of the vibration rod 1015 inside the barrel 101 is in contact with the side wall of the lower setting strip 701. Under the continuous filtering effect of the filter cloth 5, dust will inevitably adhere to the surface of the filter cloth 5. If the adhered dust does not fall, it is not conducive to the timely collection of dust, and it will also affect the dust adsorption effect of the subsequent filter cloth 5. Therefore, the vibration rod 1015 is arranged on the barrel 101. When the adhered dust on the filter cloth 5 needs to be collected and removed, the worker only needs to pull the vibration rod 1015 outward and compress the vibration spring 1018, and then release the vibration rod 1015. The vibration rod 1015 is driven by the elastic force of the vibration spring 1018 to knock and vibrate the lower setting strip 701. At the same time, the filter cloth 5 connected with the lower setting strip 701 is also vibrated and knocked, so that the filter cloth 5 is vibrated by the vibration conduction of the lower setting strip 701, so as to realize the purpose of shaking off the dust adhered to the filter cloth 5, and to ensure the timely collection of dust and the dust adsorption effect of the filter cloth. The operation is simple and fast, and does not need to be disassembled and cleaned. Only a few operations of the vibration rod 1015 during the operation of the system can realize the purpose of quickly removing the dust adhered to the filter cloth 5.

[0082] More preferably, referring to Figure 7 、 Figure 8 、 Figure 12 and Figure 13The lower fixing strip 701 and the lower fixing block 702 are connected through the buffer 8, wherein the buffer 8 comprises a first buffer rod 801, a second buffer rod 802 and a buffer spring 803, the first buffer rod 801 is fixedly arranged on the side wall of the periphery of the lower fixing strip 701, the second buffer rod 802 is fixedly arranged on the lower fixing block 702, one end of the buffer spring 803 is pre-tightened and sleeved on the first buffer rod 801, the other end of the buffer spring 803 is pre-tightened and sleeved on the second buffer rod 802, the lower fixing block 702 and the lower fixing strip 701 are elastically connected through the buffer spring 803, in actual application, the appropriate spring hardness can be determined by selecting the elastic coefficient, wire diameter, outer diameter and other related models of the buffer spring 803, so as to meet the connection reliability and stability between the lower fixing block and the lower fixing strip, so that the lower fixing block 702 and the lower fixing strip 701 can form an elastic connection meeting the requirements of the working condition, the selection of the spring is a prior art, which will not be described in detail here. When the worker pulls and releases the vibration rod 1015 to perform the operation of knocking and vibrating the lower fixing strip 701, by arranging the buffer 8 between the lower fixing strip 701 and the lower fixing block 702, and utilizing the elastic deformation of the buffer spring 803 in the buffer 8 when it is impacted, the vibration impact on the lower fixing strip 701 will not be conducted to the cylinder 101 in the form of rigid conduction, so that the purpose of not causing rigid impact on the cylinder 101 when the vibration filter cloth 5 is vibrated is achieved, at the same time, due to the buffer spring 803 with elastic deformation performance arranged between the lower fixing strip 701 and the lower fixing block 702, the lower support 7 has better vibration performance, so that the purpose of further improving the dust vibration falling effect on the dust adhered to the filter cloth 5 is achieved.

[0083] As another preferred scheme, the filter cloth bag can also be sleeved on the cylinder outlet pipe 1021 to further achieve the purpose of filtering dust in the airflow, at the same time, since the cylinder outlet pipe 1021 is arranged on the cylinder cover 102, when it is sealingly arranged on the cylinder 101, the closed bottom plate 1022 at the bottom of the cylinder cover 102 abuts against the upper support 6, therefore, when the lower support 7 is knocked, the lower support 7 drives the filter cloth 5 to drive the upper support 6 to vibrate, so that the upper support 6 also drives the filter cloth bag to vibrate, thereby achieving the purpose of vibration dust removal of the filter cloth bag, in other cases, the filter cloth bag can also be integrally detached by detaching the cylinder cover 102 to perform cleaning operation.

[0084] As a preferred scheme of the present embodiment, the banburying machine material port return dust removal system further comprises a dust collecting one-way valve 9, the dust collecting one-way valve 9 is arranged on the dust collecting port 1012 and is configured to allow movement from inside to outside of the cylinder 101 and limit movement from outside to inside, in this way, the dust collecting one-way valve 9 can play the role of one-way closing the dust collecting port 1012, and also can play the role of avoiding air entering the inside of the cylinder 101 from the dust collecting port 1012, so as to ensure the stability of the system operation.

[0085] Specifically, referring to Figure 14 , the dust collecting one-way valve 9 comprises a dust collecting rubber pad 901 arranged in the dust collecting port 1012, the rubber pad has a movable closing panel 902, and the closing panel 902 is arranged to be capable of completely covering the dust collecting port 1012, and the closing panel 902 is arranged to be capable of tightly closing the dust collecting port 1012 and swinging to the outside of the dust collecting port 1012 to open the dust collecting port 1012, when the system is in operation, under the negative pressure suction of the air extractor, the inner cavity of the cylinder 101 is in negative pressure relative to the outside of the dust collecting port 1012, at this time, the closing panel 902 in the dust collecting rubber pad 901 will be tightly closed to the dust collecting port 1012 under the negative pressure suction, so as to avoid the air entering the inside of the cylinder 101 from the dust collecting port 1012, at the same time, when more dust is accumulated in the inside of the cylinder 101, the dust collecting rubber pad 901 will be opened under the weight of the accumulated dust to overcome the negative pressure, so that the dust can fall out through the dust collecting port 1012, and then a collecting barrel is arranged below the dust collecting port to achieve the purpose of collecting dust, when the dust is basically fallen, the weight of the accumulated dust is not enough to overcome the negative pressure suction, so that the dust collecting rubber pad 901 is adsorbed again and the dust collecting port 1012 is closed, thereby achieving the purpose of automatic dust collection.

[0086] In summary, the mixer material port return dust removal system disclosed in the embodiment can bring the following beneficial effects:

[0087] 1) The mixer material port return dust removal system uses the first filter plate in the return box to make the air flow in the return channel winding and bending, so that the raw material particles in the air flow collide with the first filter plate and fall down, thereby achieving the purpose of automatically recycling the raw material particles, and the cyclone in the dust removal cylinder uses the rotating centrifugal action on the air flow, so that when the dust in the air flow passes through the cyclone, the dust carried in the air flow collides and rubs with the side wall of the cyclone, thereby reducing the running speed of the dust, so that it falls into the dust collecting port below the cyclone, thereby achieving the purpose of dust removal on the air flow, thereby achieving the purpose of dust removal and raw material particle recycling;

[0088] 2) The winding and staggered arrangement of the first and second filter plates can make the air in the running process fully contact and collide with the first and second filter plates, thereby further improving the filtering effect of the raw material particles;

[0089] 3) The design of the closing bottom plate on the cylinder cover can ensure that the air flow can completely flow through the entire return winding structure formed by the filter cloth, thereby achieving the purpose of optimal filtering effect;

[0090] 4) The vibration rod realizes the purpose of shaking off the dust adhered on the filter cloth, guarantees the timely collection of the dust, ensures the dust adsorption effect of the filter cloth, is simple and quick to operate, does not need to be disassembled and cleaned, and only needs to operate the vibration rod for several times during the running process of the system, so that the dust adhered on the filter cloth can be quickly removed.

[0091] The technical means disclosed in the present application scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements are also considered to be within the protection scope of the present application.

Claims

1. A banbury head dust removal system, comprising a dust removal cylinder (1) and an exhaust fan capable of forming a negative pressure air flow in the inner cavity of the dust removal cylinder (1), the dust removal cylinder (1) is communicated with the gas collecting hood of the banbury through a pipeline, the negative pressure port of the exhaust fan is communicated with the dust removal cylinder (1), characterized in that, Also comprising: a return box (2) horizontally and transversely arranged and installed in the pipeline between the dust removal cylinder (1) and the gas collecting hood, at least one first filter plate (3) being arranged in the inner cavity of the return box (2) in an inclined manner, at least part of the plate surface of the first filter plate (3) being in the flow channel of the airflow in the inner cavity of the return box (2), a return port (201) capable of communicating with the gas collecting hood of the internal mixer being arranged at the bottom of the return box (2), the return port (201) being below the first filter plate (3), and a cyclone arranged in the inner cavity of the dust removal cylinder (1), the cyclone being configured to promote the rotational centrifugal motion of the airflow in the dust removal cylinder (1), the bottom of the cyclone having a falling port (503) for the dust in the airflow running in the cyclone to fall and leave the cyclone after being impacted and rubbed by the side wall of the cyclone to reduce the speed, the bottom of the dust removal cylinder (1) being provided with a dust collecting port (1012) below the falling port (503); the two opposite side walls of the return box (2) are respectively provided with an air inlet (202) and an air outlet (203), the air inlet (202) is connected with the gas collecting hood of the internal mixer through a pipeline, and the air outlet (203) is connected with the dust removal cylinder (1) through a pipeline; the cavity between the air inlet (202) and the air outlet (203) forms a flow channel for the airflow, the first filter plate (3) is arranged between the air inlet (202) and the air outlet (203), the bottom of the first filter plate (3) is lower than the bottom of the air inlet (202), the top of the first filter plate (3) is lower than the inner wall of the top of the return box (2), and the bottom of the first filter plate (3) and the inner wall of the return box (2) where the air inlet (202) is located have a gap for the raw material particles to enter the return port (201) through the gap; a second filter plate (4) is further arranged between the first filter plate (3) and the air inlet (202), the second filter plate (4) is arranged in an inclined manner from top to bottom to the first filter plate (3), and the top of the second filter plate (4) is higher than the top of the air inlet (202); the cyclone comprises a filter cloth (5) arranged in the dust removal cylinder (1) in a rotary winding manner; any adjacent cloth surfaces in the filter cloth (5) in a rotary winding manner have gaps to form a flow channel for the rotational centrifugal motion of the airflow; the space between the outermost cloth end of the filter cloth (5) and the adjacent cloth surface forms a cyclone inlet (501) of the cyclone, a cylinder inlet pipe (1011) is arranged on the side wall of the dust removal cylinder (1), the outer pipe section of the cylinder inlet pipe (1011) is connected with a pipeline, and the end of the inner pipe section of the cylinder inlet pipe (1011) is located at the position of the cyclone inlet (501). The top opening of the space surrounded by the innermost cloth end of the filter cloth (5) and the cloth surface adjacent thereto forms a cyclone outlet (502) of the cyclone, and the dust removal cylinder (1) is provided with a cylinder outlet pipe (1021) which communicates with the cyclone outlet (502); The bottom opening of the filter cloth (5) in a rotary winding shape forms the falling opening (503); The dust removal cylinder (1) comprises a cylinder body (101) and a cylinder cover (102) capable of being sealingly arranged on the top of the cylinder body (101), the cyclone is arranged in the inner cavity of the cylinder body (101), and the cylinder inlet pipe (1011) is formed on the outer wall of the cylinder body (101); The bottom of the cylinder cover (102) is formed with a closed bottom plate (1022), the bottom surface of the closed bottom plate (1022) is configured to be capable of completely covering the cross section of the filter cloth (5) perpendicular to the rotary center axis when the filter cloth (5) is in a rotary winding shape, and when the cylinder cover (102) is sealingly assembled on the cylinder body (101), the closed bottom plate (1022) abuts against the top of the filter cloth (5) in a rotary winding shape; The cylinder outlet pipe (1021) is arranged in the middle of the cylinder cover (102), and the bottom pipe section of the cylinder outlet pipe (1021) extends out of the closed bottom plate (1022), and when the cylinder cover (102) is sealingly assembled on the cylinder body (101), the bottom pipe section of the cylinder outlet pipe (1021) extends into the cyclone outlet (502).

2. The internal mixer port regrind dust removal system of claim 1, wherein, The top of the first filter plate (3) is higher than the bottom of the second filter plate (4); A plurality of filter holes (10) are arranged on the first filter plate (3) and the second filter plate (4); The first filter plate (3) is in the shape of a circular arc plate, and the center of curvature of the first filter plate (3) is arranged close to the air inlet (202); The second filter plate (4) is in the shape of a plane plate.

3. The internal mixer port regrind dust removal system of claim 2, wherein, The number of the first filter plate (3) and the second filter plate (4) is two, and the two first filter plates (3) and the second filter plates (4) are arranged in the return box (2) in a spaced manner; The bottom of the air outlet (203) is provided with a guide plate (204), and the end of the guide plate (204) away from the air outlet (203) extends to the plate surface of the first filter plate (3) closest to the air outlet (203).

4. The internal mixer port re-circulating dedusting system of claim 1, wherein, The cyclone further comprises an upper support (6) having an upper shaping strip (601) in a rotary winding shape, and the cloth edge at the top of the filter cloth (5) is arranged on the upper shaping strip (601) along the shape of the upper shaping strip (601) so that the filter cloth (5) is in a rotary winding shape; A plurality of upper fixing blocks (602) are arranged on the side wall of the periphery of the upper shaping strip (601) in a spaced manner, and a plurality of fixing clamping grooves (1013) corresponding to the upper fixing blocks (602) are arranged on the inner side wall of the cylinder body (101), and the upper fixing blocks (602) are arranged in the fixing clamping grooves (1013).

5. The internal mixer port re-circulation dust removal system of claim 4, wherein, The cyclone further comprises a lower support (7) having a lower shaping strip (701) in the shape of a convolute, and the cloth edge of the bottom of the filter cloth (5) is arranged along the shape of the lower shaping strip (701) and is mounted on the lower shaping strip (701); A plurality of lower fixing blocks (702) are arranged on the side wall of the periphery of the lower shaping strip (701) at intervals, and a plurality of sliding clamping grooves (1014) corresponding to the lower fixing blocks (702) are arranged on the inner side wall of the cylinder (101), and the lower fixing blocks (702) are mounted at the bottom of the sliding clamping grooves (1014); The fixed clamping groove (1013) is directly above the sliding clamping groove (1014) in the axial direction of the cylinder (101), and the groove width of the fixed clamping groove (1013) is greater than the groove width of the sliding clamping groove (1014), and the cavity of the sliding clamping groove (1014) extends to the cavity of the fixed clamping groove (1013) in the axial direction of the cylinder (101).

6. The internal mixer port re-circulation dust removal system of claim 5, wherein, A vibrating rod (1015) whose rod segment can penetrate the side wall of the cylinder (101) is movably arranged on the cylinder (101), a vibrating support (1016) is arranged on the outer side wall of the cylinder (101), the vibrating rod (1015) is slidingly assembled in the vibrating support (1016), a top disc (1017) is arranged on the rod segment outside the cylinder (101), a vibrating spring (1018) is sleeved on the vibrating rod (1015), the two ends of the vibrating spring (1018) abut against the top disc (1017) and the vibrating support (1016) respectively, and the end of the rod segment inside the cylinder (101) of the vibrating rod (1015) is in contact with the side wall of the lower shaping strip (701).

Images