Return screw conveyor

Abstract

The present invention discloses a circular screw conveyor, comprising an outer feeding cylinder and an inner feeding cylinder; the space between the outer feeding cylinder and the inner feeding cylinder is a first feeding channel, and the inner feeding cylinder is hollow to form a second feeding channel; an outer screw blade is installed on the outside of the inner feeding cylinder, and an inner screw blade is installed on the inside of the inner feeding cylinder; the material in the first feeding channel is transported toward the side away from the motor assembly by the outer screw blade; the material in the second feeding channel is transported toward one end of the motor assembly by the inner screw blade. The screw conveyor of the present invention can realize a feeding length of 1 to 8 meters without the need for inner shaft bracket support, and the result of the support without bracket is that it is composed of outer screw blades, inner feeding cylinder and inner screw blades, and the same direction rotation realizes bidirectional discharging, that is, the output of the outer material of the outer screw blade is realized, and the material transmission from the first feeding channel to the second feeding channel is also realized, so that the output of the inner material of the inner screw blade can also be realized.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying, and in particular to a spiral conveyor. Background Art

[0002] Screw conveyor is a commonly used machine for material transmission and extrusion. Usually, the screw conveyor realizes the feeding of materials into the conveying barrel through the screw blades inside the conveying barrel, and the internal screw blades are driven to rotate by the conveyor motor to complete the material discharge.

[0003] The screw conveyor in the prior art needs to be supported by a bracket because the conveying line is too long. At the same time, the screw blade structure in the prior art is also relatively simple, and materials often get stuck on the inner wall of the conveying cylinder, which seriously affects the progress of material discharge and easily damages the conveyor.

[0004] Therefore, based on the above technical problems, technicians in this field are in urgent need of developing a spiral conveyor. Summary of the invention

[0005] The object of the present invention is to provide a spiral conveyor which can realize a non-bracket design with a feeding length ranging from 1 to 8 meters and can realize a same-direction rotation and bidirectional discharge.

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

[0007] The spiral conveyor of the present invention comprises:

[0008] Conveying outer cylinder;

[0009] A material conveying inner cylinder integrated inside the material conveying outer cylinder and extending along the axial direction of the material conveying outer cylinder;

[0010] The outer wall of the inner material delivery cylinder is smaller than the inner wall of the outer material delivery cylinder, and the space between the outer material delivery cylinder and the inner material delivery cylinder is a first material delivery channel;

[0011] The inner part of the material conveying inner cylinder is hollow to form a second material conveying channel;

[0012] The outer side of the inner tube is provided with an outer screw blade, and the inner side of the inner tube is provided with an inner screw blade.

[0013] The spiral conveyor also includes:

[0014] A motor assembly integrated at one end of the material conveying outer cylinder and driving with the material conveying inner cylinder;

[0015] The motor assembly drives the outer propeller blades and the inner propeller blades to rotate synchronously;

[0016] The material in the first material conveying channel is conveyed toward the side away from the motor assembly by the outer screw blade;

[0017] The material in the second material conveying channel is conveyed toward one end of the motor assembly through the inner screw blade.

[0018] Furthermore, the spiral conveyor has a feed port and a discharge port;

[0019] The side of the inner material delivery cylinder close to the motor assembly is configured as an inner spiral material cylinder, and the side of the inner material delivery cylinder away from the motor assembly is configured as an outer spiral material cylinder;

[0020] The feed port is divided into an inner spiral feed port and an outer spiral feed port;

[0021] At least one of the external spiral feed ports is connected to the external feed cylinder, and at least one of the external spiral feed ports is arranged within the range of the external spiral barrel, and the external spiral feed port is connected to the first feed channel to transport materials into the first feed channel;

[0022] At least one inner spiral feed port is connected to the outer feeding cylinder, and at least one inner spiral feed port is arranged within the range of the inner spiral barrel, and the inner spiral feed port is connected to the second feeding channel to transport materials into the second feeding channel;

[0023] The discharge port is divided into an inner spiral discharge port and an outer spiral discharge port;

[0024] The outer feeding cylinder is connected with at least one outer spiral discharge port, and at least one outer spiral discharge port is arranged within the range of the outer spiral barrel, and the outer spiral discharge port is connected with the first feeding channel to discharge the material outward;

[0025] At least one inner spiral discharge port is connected to the outer feeding cylinder, and at least one inner spiral discharge port is arranged within the range of the inner spiral barrel, and the inner spiral discharge port is connected to the first feeding channel to discharge materials outward.

[0026] Furthermore, a plurality of material outlets are evenly provided on the surface of the inner spiral barrel.

[0027] Furthermore, the end of the material conveying inner cylinder away from the motor assembly is in an open structure to form a material inlet;

[0028] A material guide paddle assembly is installed at the material guide inlet of the material conveying inner cylinder;

[0029] The material inner-guiding paddle assembly has material inner-guiding paddles extending in an arc-shaped trajectory, and the material in the first material conveying channel is guided into the second material conveying channel by the material inner-guiding paddles.

[0030] Furthermore, the motor assembly comprises:

[0031] Servo motor;

[0032] a speed reducer connected to the output end of the servo motor; and

[0033] An inner supporting spline shaft drivingly connected to the output end of the reducer;

[0034] The power of the servo motor is transmitted to the feeding inner cylinder through the reducer and the inner supporting spline shaft;

[0035] The motor assembly also includes:

[0036] Torque limiter.

[0037] Furthermore, a force storage buffer spring is sleeved on the outer side of the inner supporting spline shaft.

[0038] Furthermore, the material guide inner blade assembly includes:

[0039] A blade supporting cylinder installed at an end of the material conveying outer cylinder away from one end of the motor assembly;

[0040] An inner supporting ball spline shaft extending axially along the inner feeding cylinder; and

[0041] An outer ball sleeve matched with the inner supporting ball spline shaft;

[0042] The material guide inner paddle is installed on the side of the inner supporting ball spline shaft close to the material feeding inner cylinder;

[0043] One end of the material guide inner blade extends toward the inner wall of the material conveying outer cylinder, and the other end of the material guide inner blade extends toward the inside of the material conveying inner cylinder to form a material guide flow;

[0044] The outer sleeve of the outer ball sliding sleeve is provided with a force storage buffer spring.

[0045] Furthermore, the blade support cylinder is assembled with the material feeding outer cylinder through a quick-opening floating head, and the inner support ball spline shaft is rotatably connected with the blade support cylinder through an outer support bearing.

[0046] Furthermore, the outer propeller blades and the inner propeller blades are both configured as flat-arc propeller blades;

[0047] The upper and lower ends of the flat arc propeller blade both have arc-shaped bodies, and the portion between the two arc-shaped bodies is formed into a flat blade body.

[0048] Furthermore, a reverse blade having a rotation direction opposite to that of the corresponding blade is installed near one end of the motor assembly;

[0049] A vertical stirring blade for breaking up the material is installed at the corresponding discharge port of the spiral conveyor.

[0050] In the above technical solution, the present invention provides a spiral conveyor having the following beneficial effects:

[0051] The screw conveyor of the present invention can achieve a feeding length of 1 to 8 meters without the need for inner shaft bracket support. The support without bracket is composed of outer screw blades, inner feeding tube and inner screw blades, and rotation in the same direction realizes bidirectional discharge, that is, the output of external materials of the outer screw blades is realized, and the material transmission from the first feeding channel to the second feeding channel is realized, thereby also realizing the output of internal materials of the inner screw blades.

[0052] The screw conveyor of the present invention is driven by a motor assembly, and the other end is integrated with material guiding inner paddles in the form of a quick-opening floating head, wherein the inner supporting ball spline shaft is partially embedded in the material conveying inner cylinder. Since the material conveying inner cylinder is a hollow design without an inner shaft, the quick-opening floating head can be quickly disassembled to facilitate cleaning of the paddles.

[0053] The screw conveyor of the present invention can also mix two or more materials to achieve the purpose of both conveying and mixing. The bidirectional discharge refers to discharge in two directions, front and back or left and right, of the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0055] Figure 1 A schematic structural diagram of a spiral conveyor provided in an embodiment of the present invention;

[0056] Figure 2 A schematic diagram of the arrangement positions of the feed port and the discharge port of the spiral conveyor provided in an embodiment of the present invention;

[0057] Figure 3 A cross-sectional view of a material guide inner blade assembly of a spiral screw conveyor provided in an embodiment of the present invention;

[0058] Figure 4 A schematic diagram of the structure of the reverse blades and the vertical stirring blades of the spiral conveyor provided in an embodiment of the present invention;

[0059] Figure 5 Schematic diagram of the structure of the material guide inner blade assembly of the spiral conveyor provided in the embodiment of the present invention Figure 1 ;

[0060] Figure 6 Schematic diagram of the structure of the material guide inner blade assembly of the spiral conveyor provided in the embodiment of the present invention Figure 2 ;

[0061] Figure 7 A schematic diagram of the structural forming position of the flat arc propeller blades of the spiral screw conveyor provided in an embodiment of the present invention;

[0062] Figure 8 A schematic structural diagram of a flat arc propeller blade of a spiral screw conveyor provided in an embodiment of the present invention;

[0063] Fig. 9 A schematic diagram of the working state of the flat arc propeller blades of the spiral screw conveyor provided in an embodiment of the present invention acting on materials.

[0064] Description of reference numerals:

[0065] 1. Outer feeding cylinder; 2. Inner feeding cylinder; 3. Motor assembly; 4. Inner material guide paddle assembly; 5. Force storage buffer spring; 6. Reverse paddle; 7. Vertical stirring paddle;

[0066] 10. Materials;

[0067] 101. first material conveying channel; 102. outer propeller blade; 103. flat arc propeller blade;

[0068] 201, external spiral barrel; 202, internal spiral barrel; 203, internal spiral blade; 204, material outlet;

[0069] 301, servo motor; 302, reducer; 303, inner support spline shaft; 304, torque limiter;

[0070] 401, quick-opening floating head; 402, inner supporting ball spline shaft; 403, outer ball sliding sleeve; 404, material guiding inner blade; 405, outer supporting bearing; 406, outer blade supporting cylinder;

[0071] 601, unloading buffer area;

[0072] 10301. Arc-shaped body; 10302. Straight blade body. DETAILED DESCRIPTION

[0073] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0074] See also Figures 1 to 9 As shown;

[0075] The spiral conveyor of the present invention comprises:

[0076] Conveying outer cylinder 1;

[0077] The material conveying inner cylinder 2 is integrated inside the material conveying outer cylinder 1 and extends along the axial direction of the material conveying outer cylinder 1;

[0078] The outer wall of the inner material delivery cylinder 2 is smaller than the inner wall of the outer material delivery cylinder 1, and the space between the outer material delivery cylinder 1 and the inner material delivery cylinder 2 is the first material delivery channel 101;

[0079] The inner part of the material conveying inner cylinder 2 is hollow to form a second material conveying channel;

[0080] The outer side of the inner tube 2 is provided with an outer propeller blade 102, and the inner side of the inner tube 2 is provided with an inner propeller blade 203;

[0081] The spiral conveyor also includes:

[0082] A motor assembly 3 integrated at one end of the outer feeding cylinder 1 and driving the inner feeding cylinder 2;

[0083] The motor assembly 3 drives the outer propeller blade 102 and the inner propeller blade 203 to rotate synchronously;

[0084] The material 10 in the first material conveying channel 101 is conveyed toward the side away from the motor assembly 3 by the outer screw blade 102;

[0085] The material 10 in the second material conveying channel is conveyed toward one end of the motor assembly 3 through the inner screw blade 203 .

[0086] Specifically, the present embodiment discloses a spiral conveyor that realizes bidirectional feeding and discharging. In order to realize a bracket-free support structure, the present embodiment is designed with a feeding outer cylinder 1 and a feeding inner cylinder 2 that are nested with each other, wherein the feeding outer cylinder 1 and the feeding inner cylinder 2 are coaxially arranged, and the feeding inner cylinder 2 is embedded in the feeding outer cylinder 1, and a first feeding channel 101 is formed between the feeding outer cylinder 1 and the feeding inner cylinder 2, and the material 10 in the first feeding channel 101 is transported in a first direction by the above-mentioned outer screw blades 102; and the feeding inner cylinder 2 is hollow inside to form a second feeding channel, and the material 10 in the second feeding channel is transported in a second direction by the above-mentioned inner screw blades 203. The first direction and the second direction of the present embodiment are opposite, so that bidirectional discharging is realized, and according to the process requirements and the discharging requirements, one or more feed ports and discharge ports can be opened at corresponding positions, and the discharge switch can be controlled by a valve to meet different process requirements and the discharging requirements.

[0087] Preferably, the spiral conveyor of this embodiment has a feed port and a discharge port;

[0088] The side of the inner feeding cylinder 2 close to the motor assembly 3 is configured as an inner spiral barrel 202, and the side of the inner feeding cylinder 2 away from the motor assembly 3 is configured as an outer spiral barrel 201;

[0089] The feed inlet is divided into an inner spiral feed inlet and an outer spiral feed inlet;

[0090] At least one external spiral feed port is connected to the material delivery outer barrel 1, and the at least one external spiral feed port is arranged within the range where the external spiral barrel 201 is located, and the external spiral feed port is connected to the first material delivery channel 101 to deliver materials into the first material delivery channel 101;

[0091] At least one inner spiral feed port is connected to the outer feeding cylinder 2, and the at least one inner spiral feed port is arranged within the range where the inner spiral barrel 202 is located, and the inner spiral feed port is connected to the second feeding channel to transport materials into the second feeding channel;

[0092] The discharge port is divided into an inner spiral discharge port and an outer spiral discharge port;

[0093] At least one external spiral discharge port is connected to the material delivery outer barrel 1, and the at least one external spiral discharge port is arranged within the range where the external spiral barrel 201 is located, and the external spiral discharge port is connected to the first material delivery channel 101 to discharge the material 10 outward;

[0094] At least one inner spiral discharge port is connected to the outer feeding barrel 1 , and the at least one inner spiral discharge port is arranged within the range of the inner spiral barrel 202 , and the inner spiral discharge port is connected to the first feeding channel 101 to discharge the material 10 outward.

[0095] The distribution of the feed port and the discharge port of the spiral screw conveyor is introduced in detail here. Since the outer screw blade 102 and the inner screw blade 203 are designed in this embodiment, and according to the design principle of discharging materials at both ends, the inner barrel 2 of the material conveying is also divided into two main areas, namely the inner screw barrel 202 and the outer screw barrel 201. At the same time, a plurality of outer screw feed ports are designed in the area where the outer screw barrel 201 is located to convey materials into the first conveying channel 101. At the same time, a plurality of inner screw feed ports are designed in the area where the inner screw barrel 202 is located to convey materials 10 into the second conveying channel. In addition, the second feed channel of the present embodiment does not rely solely on the inner spiral feed port for feeding. The feed inner cylinder 2 of the present embodiment has a material guide inner blade assembly 4 at the end away from the motor assembly 3, which can guide the material 10 in the first feed channel 101 to the second feed channel. When the material 10 is transmitted to this place in the first feed channel 101, according to the process requirements, the material guide inner blade assembly 4 can be used to guide part of the material from the end of the feed inner cylinder 2 to the second feed channel, and under the mutual squeezing of the materials 10 and the drive of the inner spiral blades 203, the material 10 in the second feed channel is transmitted along the above-mentioned second direction until discharge.

[0096] According to the discharging requirements of different process requirements and discharging methods, multiple discharge port structures are designed, and their principles are similar to those of the feed port, which will not be repeated here.

[0097] More preferably:

[0098] A plurality of material outlets 104 are evenly formed on the surface of the inner spiral barrel 203 .

[0099] Preferably, in this embodiment, the end of the material conveying inner cylinder 2 away from the motor assembly 3 is open to form a material inlet;

[0100] A material guide paddle assembly 4 is installed at the material guide inlet of the material conveying inner cylinder 2;

[0101] The material inner-guiding blade assembly 4 has a material inner-guiding blade 404 extending in an arc-shaped trajectory, and the material 10 in the first material conveying channel 101 is guided into the second material conveying channel by the material inner-guiding blade 404 .

[0102] Wherein, the above-mentioned motor assembly 3 includes:

[0103] Servo motor 301;

[0104] A reducer 302 connected to the output end of the servo motor 301; and

[0105] An inner supporting spline shaft 303 drivingly connected to the output end of the reducer 302;

[0106] The power of the servo motor 301 is transmitted to the feeding inner cylinder 2 through the reducer 302 and the inner support spline shaft 303;

[0107] The motor assembly 3 also includes:

[0108] Torque limiter 304. In this embodiment, a torque limiter 304 is integrated in the motor assembly 3. The torque limiter 304 can prevent the servo motor 301, the reducer 302, and the inner support spline shaft 303 from overload when the device is stuck.

[0109] At the same time, in order to provide a certain buffering and protective effect on the power transmission process, a force storage buffer spring 5 is sleeved on the outside of the inner supporting spline shaft 303 of the present embodiment.

[0110] In addition, the material guide inner blade assembly 4 of this embodiment includes:

[0111] A blade support cylinder 406 installed at the end of the feeding outer cylinder 1 away from the motor assembly 3;

[0112] An inner supporting ball spline shaft 402 extending axially along the inner feeding cylinder 2; and

[0113] An outer ball sleeve 403 cooperates with the inner supporting ball spline shaft 402;

[0114] A material guide paddle 404 is installed on the side of the inner supporting ball spline shaft 402 close to the inner feeding tube 2;

[0115] One end of the material guide inner blade 404 extends toward the inner wall of the material conveying outer cylinder 1, and the other end of the material guide inner blade 404 extends toward the inside of the material conveying inner cylinder 2 to form a guide flow of the material 10;

[0116] The outer ball sliding sleeve 403 is provided with a force storage buffer spring 5 on its outer side.

[0117] The blade support cylinder 406 is assembled with the material feeding outer cylinder 1 through the quick-opening floating head 401 , and the inner support ball spline shaft 402 is rotatably connected with the blade support cylinder 406 through the outer support bearing 405 .

[0118] The specific structure of the material guide inner blade assembly 4 that can guide the material 10 in the first feeding channel 101 to the second feeding channel is introduced in detail. First, in order to achieve rapid disassembly and assembly so as to clean the blades, this embodiment is installed in the form of a quick-opening floating head 401. At the same time, the feeding inner tube 2 can drive the inner support ball spline shaft 402 to rotate, thereby driving the material guide inner blade 404 to rotate. When the material reaches the material guide inner blade 404, the arc design of the material guide inner blade 404 is used to guide the material into the second feeding channel. The above-mentioned force storage buffer spring 5 has the same function as one end of the motor assembly 3, and can play a certain buffering and protective role.

[0119] In addition, the material guide inner blade 404 of this embodiment is formed with inner and outer material return grooves for importing and exporting materials, which can realize forward and reverse rotation to realize the export or import of the material 10, thereby ensuring that the material 10 will not be squeezed on the cylinder. It can be a stator or a rotor, which is suitable for designs with bearings at both ends, and also suitable for designs with a motor and a reducer at one end and no bearing at the other end, and has good applicability.

[0120] Preferably, in order to solve the problem in the prior art that materials often clog the channel, the outer propeller blades 102 and the inner propeller blades 203 of this embodiment are both configured as flat arc propeller blades 103;

[0121] The upper and lower ends of the flat arc propeller blade 103 both have an arc body 10301 , and the portion between the two arc bodies 10301 is formed as a straight blade body 10302 .

[0122] The flat arc propeller blade 103 of this embodiment is an arc-shaped structure of the inner and outer edges of the propeller blade, that is, the inner and outer edges of the propeller blade are formed into an arc-shaped body 10301 extending in an arc shape, and at the same time, there is a straight blade body 10302 between the two arc-shaped bodies 10301. This design helps to align the position of the blade and the cylinder by squeezing the material 10 during the material pushing process under the action of the inner blade arc-shaped body 10301, so that it is always in the coaxial center; and under the action of the outer blade arc-shaped body 10301, the material 10 squeezed by the outer shell during the pushing process of the main material 10 can be better separated, and since it is not a plane, the edge material 10 will move toward a flat arc to reduce the friction resistance of the material 10 in the shell. In addition, the above-mentioned straight blade body 10302 helps the outer blade to produce a curling and rolling motion of the material 10 during the pushing process of the material 10 and achieve a gentle unfolding state.

[0123] Finally, a reverse blade 6 is installed near one end of the motor assembly 3, with a rotation direction opposite to that of the corresponding blade;

[0124] A vertical stirring blade 7 for breaking up the material 10 is installed at the corresponding discharge port of the spiral conveyor.

[0125] In this embodiment, a circle of elliptical, closed reverse blades 6 are installed at the end portion and the end of the blades. Reverse means that the top of the elliptical edge is facing the top of the blade of the device. There is a blade-free area between the reverse blade 6 and the blade of the device, and a trapezoidal space is formed as a unloading buffer area 601, which is used for centrifugal gravity unloading.

[0126] The pitch of the elliptical, closed reverse blade 6 is 1 / 3 or 1 / 2 times the pitch of the feeding blade, and the material 10 is pushed in the reverse direction to avoid the material 10 squeezing the side of the end when the discharge is not smooth, causing damage to the seal, bearing and the like.

[0127] If a separate reverse blade 6 is installed, it cannot be used for reverse and forward rotation. If the material 10 is stuck in the mixing cage and needs to be started in reverse, the material 10 will be brought into the seal, bearing, etc. by the single mixing cage blade, causing damage and material leakage. Therefore, the reverse blade 6 must be closed.

[0128] The outer tube 1 of the present embodiment has a jacket outside, and the device can heat or cool the conveyed material 10 through media such as ice water, hot water, steam, etc.

[0129] In the above technical solution, the present invention provides a spiral conveyor having the following beneficial effects:

[0130] The screw conveyor of the present invention can achieve a feeding length of 1 to 8 meters without the need for an inner shaft bracket support. The support without a bracket is composed of an outer screw blade 102, an inner feeding tube 2 and an inner screw blade 203, and rotation in the same direction realizes bidirectional discharge, that is, the output of the outer material 10 of the outer screw blade 102 is realized, and the transmission of the material 10 from the first feeding channel 101 to the second feeding channel is realized, thereby realizing the output of the inner material 10 of the inner screw blade 203.

[0131] The screw conveyor of the present invention is driven by a motor assembly 3, and the other end is integrated with a material guiding inner paddle 404 in the form of a quick-opening floating head 401, wherein the inner supporting ball spline shaft 402 is partially embedded in the material conveying inner tube 2. Since the material conveying inner tube 2 is a hollow design without an inner shaft, the quick-opening floating head 401 can be quickly disassembled to facilitate cleaning of the paddles.

[0132] The screw conveyor of the present invention can also mix two or more materials to achieve the purpose of both conveying and mixing. The bidirectional discharge refers to discharge in two directions, front and back or left and right, of the feed port.

[0133] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. The spiral conveyor is characterized by: The spiral conveyor includes: Conveying outer cylinder (1); A material conveying inner cylinder (2) integrated inside the material conveying outer cylinder (1) and extending along the axial direction of the material conveying outer cylinder (1); The outer wall of the material conveying inner cylinder (2) is smaller than the inner wall of the material conveying outer cylinder (1), and the space between the material conveying outer cylinder (1) and the material conveying inner cylinder (2) is a first material conveying channel (101); The inner material conveying tube (2) is hollow inside to form a second material conveying channel; The outer portion of the material conveying inner cylinder (2) is provided with an outer screw blade (102), and the inner portion of the material conveying inner cylinder (2) is provided with an inner screw blade (203); The spiral conveyor also includes: A motor assembly (3) integrated at one end of the material conveying outer cylinder (1) and transmitting power to the material conveying inner cylinder (2); The motor assembly (3) drives the outer propeller blades (102) and the inner propeller blades (203) to rotate synchronously; The material (10) in the first material conveying channel (101) is conveyed toward a side away from the motor assembly (3) through the outer screw blade (102); The material (10) in the second material conveying channel is conveyed toward one end of the motor assembly (3) through the inner screw blade (203); The spiral conveyor has a feed port and a discharge port; The side of the material conveying inner cylinder (2) close to the motor assembly (3) is configured as an inner spiral material cylinder (202), and the side of the material conveying inner cylinder (2) away from the motor assembly (3) is configured as an outer spiral material cylinder (201); The feed port is divided into an inner spiral feed port and an outer spiral feed port; The material conveying outer barrel (1) is connected to at least one of the outer spiral feed ports, and the at least one outer spiral feed port is arranged within the range of the outer spiral barrel (201), and the outer spiral feed port is connected to the first material conveying channel (101) to convey the material (10) into the first material conveying channel (101); The outer material delivery cylinder (1) is connected to at least one inner spiral feed port, and the at least one inner spiral feed port is arranged within the range of the inner spiral material cylinder (202), and the inner spiral feed port is connected to the second material delivery channel to deliver material (10) into the second material delivery channel; The discharge port is divided into an inner spiral discharge port and an outer spiral discharge port; The material delivery outer barrel (1) is connected to at least one of the outer spiral discharge ports, and the at least one outer spiral discharge port is arranged within the range of the outer spiral barrel (201), and the outer spiral discharge port is connected to the first material delivery channel (101) to discharge the material (10) outwardly; The outer feeding cylinder (1) is connected to at least one inner spiral discharge port, and the at least one inner spiral discharge port is arranged within the range of the inner spiral feeding cylinder (202), and the inner spiral discharge port is connected to the first feeding channel to discharge the material (10) to the outside; The end of the material conveying inner cylinder (2) away from the motor assembly (3) is in an open structure to form a material inlet; A material guide blade assembly (4) is installed at the material guide inlet of the material conveying inner cylinder (2); The material inner guide blade assembly (4) has a material inner guide blade (404) extending in an arc-shaped trajectory, and the material (10) in the first material conveying channel (101) is guided into the second material conveying channel by the material inner guide blade (404); The material guide inner blade assembly (4) comprises: A blade supporting cylinder (406) mounted on an end of the material conveying outer cylinder (1) away from the motor assembly (3); an inner supporting ball spline shaft (402) extending axially along the material conveying inner cylinder (2); and An outer ball sliding sleeve (403) matched with the inner supporting ball spline shaft (402); The material guide inner blade (404) is installed on the side of the inner supporting ball spline shaft (402) close to the material conveying inner cylinder (2); One end of the material guiding inner blade (404) extends toward the inner wall of the material conveying outer cylinder (1), and the other end of the material guiding inner blade (404) extends toward the inside of the material conveying inner cylinder (2) to form a flow guide for the material (10); The outer ball sliding sleeve (403) is provided with a force storage buffer spring (5) on the outside; The blade support cylinder is assembled with the material conveying outer cylinder (1) via a quick-opening floating head (401), and the inner support ball spline shaft (402) is rotatably connected with the blade support cylinder (406) via an outer support bearing (405); A plurality of material outlets (204) are evenly disposed on the surface of the inner spiral barrel (202).

2. The spiral conveyor according to claim 1, characterized in that: The motor assembly (3) comprises: Servo Motor (301); a reducer (302) connected to the output end of the servo motor (301); and An inner supporting spline shaft (303) drivingly connected to the output end of the reducer (302); The power of the servo motor (301) is transmitted to the material feeding inner cylinder (2) through the reducer (302) and the inner supporting spline shaft (303); The motor assembly (3) also includes: Torque limiter (304).

3. The spiral conveyor according to claim 2, characterized in that: The inner supporting spline shaft (303) is sleeved with a force storage buffer spring (5) on the outside.

4. The spiral conveyor according to claim 1, characterized in that: The outer propeller blade (102) and the inner propeller blade (203) are both configured as flat-arc propeller blades (103); The upper and lower ends of the flat arc propeller blade (103) both have an arc-shaped body (10301), and the portion between the two arc-shaped bodies (10301) is formed into a flat straight blade body (10302).

5. The spiral conveyor according to claim 1, characterized in that: A reverse blade (6) is installed near one end of the motor assembly (3) and has a rotation direction opposite to that of the corresponding blade; A vertical stirring blade (7) for breaking up the material is installed at the corresponding discharge port of the spiral screw conveyor.

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