Screw conveyer

Abstract

The invention relates to the field of material conveying machinery, and particularly discloses a spiral conveyor which comprises multiple augers used for conveying materials, barrel bodies are arranged outside the augers, the augers comprise rotating shafts arranged along the centers of the augers, spiral blades are arranged on the rotating shafts, and the number of the augers and the number of the barrel bodies are multiple. A steering transmission mechanism used for transmitting rotating torque is connected between every two adjacent rotating shafts, every two adjacent barrels are connected through a ball head and a ball socket, the ball heads and the ball sockets are used for adjusting the angle between the two barrels, each ball head is of a spherical-crown-shaped hollow structure, each ball socket is of a hemispherical bowl-shaped structure, and an inner cavity of each ball socket is connected with the corresponding ball head in a matched mode. And the ball head is movably connected with the ball socket. By the adoption of the structure, the problems that in the prior art, when a material conveying path is not a straight line, the angle between the barrel bodies cannot be flexibly adjusted, the conveying direction of the spiral conveyor cannot be flexibly adjusted, and the spiral conveyor cannot adapt to multi-angle complex working conditions are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of material conveying machines, in particular to a screw conveyor. BACKGROUND

[0002] The screw conveyor is a continuous conveying equipment that uses the rotation of a screw to push materials, and is suitable for conveying materials such as flour, cereals, cement, chemical fertilizer, sand, gravel, and coal blocks, and is widely used in the construction, agriculture, chemical industry, and food processing industries.

[0003] In the prior art, the screw conveyor includes a motor, an auger driven by the motor for conveying materials, and a cylinder outside the auger, a feeding port is arranged near the feeding end of the cylinder, a discharging port is arranged near the discharging end of the cylinder, and a support is arranged outside the cylinder for supporting the cylinder.

[0004] In the Chinese patent document CN103420100B, a low-temperature material screw conveyor is disclosed, which includes a sealable cylinder having a containing cavity and a support for supporting the cylinder, the cylinder is a cylindrical hollow structure, the cylinder is provided with a feeding port near the bottom end and a discharging port near the top end; a Teflon lining plate is arranged on the inner surface of the cylinder, an auger for conveying materials is arranged inside the cylinder, the end of the auger is connected with a bearing seat and is driven to rotate by a motor; the surface of the Teflon lining plate is smooth and is attached to the inner surface of the cylinder; a lifting mechanism is arranged on the support for adjusting the position and angle of the cylinder; the support is a movable support and is provided with universal wheels at the bottom.

[0005] In the prior art, the screw blade of the material screw conveyor is usually welded or fixed on a straight central shaft, and can only be linearly conveyed. When the feeding port and the discharging port are not on the same axis, multiple screw conveyors need to be connected, which not only increases the cost and energy consumption, but also easily causes faults during material transmission.

[0006] The existing material screw conveyor has the following problems: when the conveying path of the material is not a straight line, the angle between the cylinders cannot be flexibly adjusted, and thus the conveying direction of the screw conveyor cannot be flexibly adjusted, the conveying path is limited, and the complex working conditions of multiple angles cannot be adapted. SUMMARY

[0007] The purpose of the present application is to provide a screw conveyor to solve the problem in the prior art that when the conveying path of the material is not a straight line, the angle between the cylinders cannot be flexibly adjusted, and thus the conveying direction of the screw conveyor cannot be flexibly adjusted, the conveying path is limited, and the complex working conditions of multiple angles cannot be adapted.

[0008] To achieve the above object, the present application discloses a screw conveyor, which comprises augers for conveying materials, the augers are externally provided with barrels, the auger comprises a rotating shaft arranged along the center of the auger, the rotating shaft is provided with helical blades, the augers and the barrels are multiple, a turning transmission mechanism for transmitting rotating torque is connected between two adjacent rotating shafts, a ball head and a ball socket are connected between two adjacent barrels, the ball head and the ball socket are used for adjusting the angle between the two barrels, the ball head is a hollow structure with a spherical crown, the ball socket is a semispherical bowl structure with an inner cavity matched with the outer shape of the ball head, and the ball head and the ball socket are movably connected.

[0009] With the above structure, the turning transmission mechanism can transmit the rotating torque on the rotating shaft from one section to another section, even if there is a certain angle between the two sections of the rotating shaft, it can adapt to the change of the conveying direction of the screw conveyor; the movable connection between the ball head and the ball socket can flexibly adjust the angle between the two adjacent barrels according to the change of the conveying direction of the screw conveyor; the ball head is a hollow structure with a spherical crown, and the ball socket is a semispherical bowl structure, which can make the inner cavities of the ball head and the ball socket communicate with the two adjacent barrels, and also support the turning transmission mechanism inside the ball head and the ball socket. In addition, through the turning transmission mechanism and the ball head and the ball socket, not only can the augers and the barrels in the screw conveyor be lengthened as needed, but also the material conveying path composed of multiple augers and multiple barrels can be adjusted according to complex working conditions. When the conveying path of the materials is not a straight line, the angle between the barrels in the screw conveyor can be flexibly adjusted, and then the conveying direction of the screw conveyor can be flexibly adjusted; the screw conveyor can be flexibly laid out according to the on-site obstacles and space, and the conveying path can be flexibly changed into various shapes such as S shape, L shape, U shape and the like according to the installation environment, which can adapt to complex working conditions of multiple angles.

[0010] As a further improvement of the present application, a connecting barrel is arranged on the ball head and / or the ball socket and connected with the barrel, a flange is arranged on the connecting barrel and the barrel and connected with each other, a central hole for passing materials is arranged on the two flanges, a shaft sleeve is arranged on the center of at least one flange and sleeved on the rotating shaft, and the shaft sleeve is fixedly connected with the corresponding flange through a supporting rod. With the above structure, the central hole on the flange allows the materials to pass through, the shaft sleeve can provide radial support and axial limitation for the rotating shaft, which is conducive to the coaxial transmission of the rotating shaft; the supporting rod fixes and connects the shaft sleeve, which makes the support of the shaft sleeve to the rotating shaft more stable, and the gap between the supporting rods is conducive to the passage of materials; the connecting barrel not only provides a detachable connecting interface for the connection between the barrel and the ball head and / or the ball socket, but also makes the connection between the connecting barrel and the barrel more stable through the flanges on the connecting interface, and the connecting barrel plays a transition role in the connection between the barrel and the ball head and the ball socket, which is conducive to the installation of the turning transmission mechanism inside the ball head and the ball socket.

[0011] As a further improvement of the present application, the two ends of the steering transmission mechanism connected with the rotating shaft are interface ends, and the end of the rotating shaft connected with the steering transmission mechanism is a matching end; the interface end is a cylindrical structure, and the matching end is a solid shaft, or the interface end is a solid shaft, and the matching end is a cylindrical structure, and the interface end and the matching end are spline-connected. With the above structure, the spline connection between the interface end and the matching end not only plays a connecting role for the rotating shaft and the steering transmission mechanism, but also can adapt to the rotation of the rotating shaft to transmit torque and power.

[0012] As a further improvement of the present application, the side wall of at least one interface end is provided with a spiral blade. With the above structure, the spiral blade on the side wall of the interface end is beneficial to the continuous and stable transmission of the material, so that the material is not easy to block at the steering transmission mechanism.

[0013] As a further improvement of the present application, the steering transmission mechanism is a universal joint assembly composed of two interconnected universal joints, including a first universal joint and a second universal joint, and the universal joint is a cross shaft type universal joint or a ball cage type universal joint. With the above structure, the universal joint realizes flexible adjustment of the angle between the two adjacent rotating shafts, and since the universal joint can compensate for the deviation, the installation precision requirement is lower, and it is easier to install; through the two interconnected universal joints, the two adjacent rotating shafts are driven at a constant speed, the transmission is more stable, the stability of the structure is improved, and the overall life and reliability of the structure are further improved.

[0014] As a further improvement of the present application, the end of the first universal joint connected with the second universal joint is a middle shaft, and the end of the second universal joint connected with the first universal joint is a connecting shaft; the middle shaft is a cylindrical structure, and the connecting shaft is a solid shaft matched with the middle shaft, or the middle shaft is a solid shaft, and the connecting shaft is a cylindrical structure matched with the middle shaft; the connecting shaft and the middle shaft are spline-connected. With the above structure, the spline connection between the connecting shaft and the middle shaft not only plays a connecting role for the first universal joint and the second universal joint, but also can adapt to the rotation of the rotating shaft to transmit torque and power.

[0015] As a further improvement of the present application, the side wall of the middle shaft and / or the connecting shaft is provided with a spiral blade. With the above structure, the spiral blade on the side wall of the middle shaft and / or the connecting shaft is beneficial to the continuous and stable transmission of the material, so that the material is not easy to block at the steering transmission mechanism.

[0016] As a further improvement of the present application, the outer spherical surface of the ball head is connected with the inner spherical surface of the socket, and an annular groove is arranged on the outer spherical surface or the inner spherical surface, and a sealing ring is embedded in the annular groove, and an oil injection port is arranged on the outer surface of the socket. With the above structure, the annular groove and the wear-resistant sealing ring can improve the sealing between the ball head and the socket, effectively prevent the leakage of materials during the transmission process, and allow the ball head to rotate flexibly within a certain angle range in the socket; through the oil injection nozzle, the grease can be periodically injected, which can not only reduce the wear between the ball head and the socket, but also reduce the rotational resistance between the ball head and the socket.

[0017] As a further improvement of the present application, the plurality of barrels include barrels that need to be adjusted in angle and barrels that do not need to be adjusted in angle, and a fixed support seat is arranged on the barrel that does not need to be adjusted in angle, and a movable support seat that is adjustable in angle relative to the barrel is arranged on the barrel that needs to be adjusted in angle. With the above structure, when the angle between two adjacent barrels does not need to be adjusted or only needs to be adjusted horizontally, only the fixed support seat is arranged on the barrel, and the connection between the barrel and the ground or the rack is more stable through the fixed support seat; the movable support seat is arranged on the barrel that needs to be adjusted in angle, and the movable support seat not only flexibly adapts to the adjustment of the angle of the barrel in the vertical direction, but also provides stable support for the barrel after the adjustment of the angle.

[0018] As a further improvement of the present application, the movable support seat includes an upper support connected with the barrel, a lower support connected with the upper support, and a base connected with the ground or the rack below the lower support, and a first connecting hole is arranged on the upper support and a second connecting hole is arranged on the lower support, and the upper support and the lower support are connected by a fixing member passing through the first connecting hole and the second connecting hole. With the above structure, when the angle of the barrel needs to be adjusted, the fixing member is loosened, the angle between the upper support and the lower support is adjusted accordingly, and after the appropriate angle is adjusted, the fixing member is tightened to tightly connect the upper support and the lower support; not only can the angle of the barrel be adjusted in the vertical direction, but also the installation is more convenient.

[0019] In summary, the beneficial effects of the present application are: through the steering transmission mechanism, the angle between the two adjacent rotating shafts is flexibly adjusted; through the ball head and the socket, the included angle between the two adjacent cylinders is flexibly adjusted according to the change of the conveying direction of the screw conveyor; through the movable support seat, the angle adjustment of the cylinder along the vertical direction is flexibly adapted, and the cylinder after the angle adjustment is stably supported. In addition, through the steering transmission mechanism and the ball head and the socket, not only the auger and the cylinder in the screw conveyor can be lengthened as needed, but also the material conveying path composed of multiple augers and multiple cylinders can be adjusted according to complex working conditions. The problem that the angle between the cylinders cannot be flexibly adjusted when the conveying path of the material is not a straight line in the prior art, and the conveying direction of the screw conveyor cannot be flexibly adjusted, the conveying path is limited, and the complex working conditions of multiple angles cannot be adapted is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of an embodiment of the screw conveyor.

[0021] Figure 2 is a front view of the embodiment shown in Figure 1

[0022] Figure 3 is a top view of the embodiment shown in Figure 1

[0023] Figure 4 is a sectional view along the direction A-A of the embodiment shown in Figure 3

[0024] Figure 5 is a perspective view of an embodiment of the steering transmission mechanism in the screw conveyor.

[0025] Figure 6 is a perspective view of an embodiment of the ball head and the socket in the screw conveyor.

[0026] Figure 7 is a sectional view along the direction B-B of the embodiment shown in Figure 6

[0027] Figure 8 is an enlarged view of position C of the embodiment shown in Figure 7

[0028] ​​​​​In the figure: 1, motor, 2, auger, 21, rotating shaft, 3, barrel, 4, steering transmission mechanism, 41, first universal joint, 42, second universal joint, 43, interface end, 44, matching end, 45, intermediate shaft, 46, connecting shaft, 5, ball head, 51, outer spherical surface, 6, ball socket, 61, inner spherical surface, 7, connecting barrel, 71, shaft sleeve, 72, support rod, 8, feed inlet, 9, discharge outlet, 10, annular groove, 11, sealing ring, 12, oil filling port, 13, first end cover, 14, second end cover, 15, bearing chamber, 16, fixed support seat, 17, movable support seat, 171, upper support piece, 172, lower support piece, 173, base, 174, first connecting hole, 175, second connecting hole, 176, fixing piece. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0030] REFERENCE Figures 1 to 7 In an embodiment of the present application, a screw conveyor includes an auger 2 for conveying materials, the auger 2 is externally provided with a barrel 3, the auger 2 includes a rotating shaft 21 arranged along the center of the auger 2, the rotating shaft 21 is provided with helical blades, the auger 2 and the barrel 3 are multiple, the first end of the auger 2 is connected with the bearing chamber 15 and is driven to rotate by the motor 1; the first end of the barrel 3 is provided with a first end cover 13 for sealing the end of the barrel 3, and the first end of the barrel 3 is provided with a feed inlet 8; the tail end of the last end of the barrel 3 is provided with a second end cover 14 for sealing the tail end of the barrel 3, and the last end of the barrel 3 is provided with a discharge outlet 9; the steering transmission mechanism 4 for transmitting rotational torque is connected between the two adjacent rotating shafts 21, the ball head 5 and the ball socket 6 are connected between the two adjacent barrels 3, the ball head 5 and the ball socket 6 are used to adjust the angle between the two barrels 3, the ball head 5 is a hollow structure with a spherical crown, the ball socket 6 is a semispherical bowl structure with an inner cavity matched with the outer shape of the ball head 5, and the ball head 5 and the ball socket 6 are movably connected.

[0031] Through the above structure, the steering transmission mechanism 4 can transmit the rotating torque on the rotating shaft 21 from one section to another, even if there is a certain angle between the two sections of the rotating shaft 21, which can adapt to the change of the conveying direction of the screw conveyor; the movable connection between the ball head 5 and the ball socket 6 can make the angle between the adjacent two barrels 3 flexibly adjust according to the change of the conveying direction of the screw conveyor; the ball head 5 is a hollow structure with a spherical crown, and the ball socket 6 is a bowl-shaped structure with a semispherical shape, which can make the inner cavities of the ball head 5 and the ball socket 6 communicate with the adjacent two barrels 3, and also support the steering transmission mechanism 4 inside the ball head and the ball socket 6. In addition, through the steering transmission mechanism 4 and the ball head 5 and the ball socket 6, not only can the auger 2 and the barrel 3 in the screw conveyor be lengthened as needed, but also the material conveying path composed of multiple augers 2 and multiple barrels 3 can be adjusted according to complex working conditions. When the conveying path of the material is not a straight line, the angle between the barrels 3 in the screw conveyor can be flexibly adjusted, and then the conveying direction of the screw conveyor can be flexibly adjusted; the screw conveyor can be flexibly laid out according to the on-site obstacles and space, and the conveying path can be flexibly changed into various shapes such as S shape, L shape, U shape, etc. according to the installation environment, which can adapt to complex working conditions of multiple angles.

[0032] With reference to Figures 1 to 4 , Figure 6 and Figure 7 , in an embodiment of the present application, the ball head 5 and / or the ball socket 6 are provided with a connecting barrel 7 connected with the barrel 3, the connecting barrel 7 and the barrel 3 are respectively provided with flanges connected with each other, the two flanges are fastened and connected by bolts and nuts, the two flanges are both provided with central holes for the material to pass through, and the central hole of at least one flange is provided with a shaft sleeve 71 sleeved on the rotating shaft 21, and the shaft sleeve 71 is fixedly connected with the corresponding flange through a support rod 72. Through the above improvement, the central hole of the flange enables the material to pass through, the shaft sleeve 71 can provide radial support and axial limitation for the rotating shaft 21, which is conducive to the coaxial transmission of the rotating shaft 21; the support rod 72 fixes and connects the shaft sleeve 71, which makes the support of the shaft sleeve 71 to the rotating shaft 21 more stable, and the gap between the support rods 72 is conducive to the passage of the material; the connecting barrel 7 not only provides an easy-to-disassemble connecting interface for the connection between the barrel 3, the ball head 5 and / or the ball socket 6, but also makes the connection between the connecting barrel 7 and the barrel 3 more stable through the flanges on the connecting interface, and the connecting barrel 7 plays a transition role in the connection between the barrel 3, the ball head 5 and the ball socket 6, which is conducive to the installation of the steering transmission mechanism 4 inside the ball head 5 and the ball socket 6.

[0033] With reference to Figure 4 , Figure 5In an embodiment of the present application, the two ends of the steering transmission mechanism 4 connected with the rotating shaft 21 are interface ends 43, and the end of the rotating shaft 21 connected with the steering transmission mechanism 4 is a matching end 44; the interface ends 43 are in a cylindrical structure, and the matching end 44 is a solid shaft, or the interface ends 43 are solid shafts, and the matching end 44 is in a cylindrical structure, and the interface ends 43 and the matching end 44 are connected by spline connection. Through the above improvement, the spline connection between the interface ends 43 and the matching end 44 not only plays a connecting role for the rotating shaft 21 and the steering transmission mechanism 4, but also can adapt to the rotation of the rotating shaft 21 to transmit torque and power.

[0034] With reference to Figure 4 , Figure 5 In an embodiment of the present application, the side wall of at least one interface end 43 is provided with a spiral blade. Through the above improvement, the spiral blade on the side wall of the interface end 43 is conducive to the continuous and stable transmission of the material, so that the material is not easy to block at the steering transmission mechanism 4.

[0035] The steering transmission mechanism 4 can be a bevel gear or a universal joint, preferably a cross shaft type universal joint or a ball cage type universal joint. With reference to Figure 4 , Figure 5 In an embodiment of the present application, the steering transmission mechanism 4 is a universal joint assembly composed of two interconnected universal joints, including a first universal joint 41 and a second universal joint 42. Through the above improvement, the universal joint realizes flexible adjustment of the angle between the two adjacent rotating shafts 21, and since the universal joint can compensate for deviations, the installation precision requirement is lower and the installation is easier; through the two universal joints, equal speed transmission between the two adjacent rotating shafts 21 is realized, the transmission is more stable, the stability of the structure is improved, and the overall service life and reliability of the structure are further improved.

[0036] The first universal joint 41 and the second universal joint 42 can be fixedly connected, inserted or connected by spline connection, preferably connected by spline connection. With reference to Figure 4 , Figure 5 In an embodiment of the present application, the end of the first universal joint 41 connected with the second universal joint 42 is a middle shaft 45, and the end of the second universal joint 42 connected with the first universal joint 41 is a connecting shaft 46; the middle shaft 45 is in a cylindrical structure, and the connecting shaft 46 is a solid shaft matched with the middle shaft 45, or the middle shaft 45 is a solid shaft, and the connecting shaft 46 is in a cylindrical structure matched with the middle shaft 45, and the connecting shaft 46 and the middle shaft 45 are connected by spline connection. Through the above improvement, the connecting shaft 46 and the middle shaft 45 not only play a connecting role for the first universal joint 41 and the second universal joint 42, but also can adapt to the rotation of the rotating shaft 21 to transmit torque and power.

[0037] With reference to Figure 4 , Figure 5In one embodiment of the present application, helical blades are arranged on the side wall of the intermediate shaft 45 and / or the connecting shaft 46. With the above improvement, the helical blades on the side wall of the intermediate shaft 45 and / or the connecting shaft 46 facilitate continuous and stable transmission of the material, and prevent the material from being blocked at the turning transmission mechanism 4.

[0038] With reference to Figures 6 to 8 In one embodiment of the present application, the outer surface of the ball head 5 connected with the socket 6 is an outer spherical surface 51, and the inner surface of the socket 6 connected with the ball head 5 is an inner spherical surface 61. An annular groove 10 is arranged on the outer spherical surface 51 or the inner spherical surface 61, and a sealing ring 11 is embedded in the annular groove 10. The sealing ring 11 is made of wear-resistant material, such as polyurethane, rubber or special engineering plastics. An oil injection port 12 is arranged on the outer surface of the socket 6. With the above improvement, the annular groove and the wear-resistant sealing ring can improve the sealing performance between the ball head 5 and the socket 6, effectively prevent the material from leaking during the transmission process, and allow the ball head 5 to rotate flexibly within a certain angle range in the socket 6. Through the oil injection port, the lubricating grease can be periodically injected, which can not only reduce the wear between the ball head 5 and the socket 6, but also reduce the rotation resistance between the ball head 5 and the socket 6.

[0039] With reference to Figures 1 to 4 In one embodiment of the present application, some of the plurality of barrels 3 are fixed and do not need to be adjusted in angle, and some of the plurality of barrels 3 are movable and need to be adjusted in angle. A fixed support seat 16 is arranged on the barrel 3 that does not need to be adjusted in angle along the vertical direction, and an angle-adjustable movable support seat 17 is arranged on the barrel 3 that needs to be adjusted in angle along the vertical direction. The bottom of the fixed support seat 16 and the movable support seat 17 is connected with the ground or the rack. When the vertical angle between two adjacent barrels 3 is adjusted, the movable support seat 17 can adjust the angle between the movable support seat 17 and the barrel 3 according to the angle between the two barrels 3. With the above improvement, when the angle between two adjacent barrels 3 does not need to be adjusted or only needs to be adjusted horizontally, the fixed support seat 16 is arranged on the barrel 3, and the barrel 3 is more stably connected with the ground or the rack through the fixed support seat 16. The movable support seat 17 is arranged on the barrel 3 that needs to be adjusted in angle along the vertical direction. The movable support seat 17 not only flexibly adjusts the angle of the barrel 3 along the vertical direction, but also provides stable support for the barrel 3 after the angle is adjusted.

[0040] The movable support seat 17 can be an adjustment structure provided with a spherical pair or a hinge structure provided with a rotation pair, and is preferably a hinge structure. With reference to Figures 1 to 4In one embodiment of the present application, the movable support base 17 comprises an upper support 171 connected with the barrel, a lower support 172 connected with the upper support 171, a base 173 connected with the ground or the rack below the lower support 172, a first connecting hole 174 provided on the upper support 171, a second connecting hole 175 provided on the lower support 172, and a fixing member 176 penetrating through the first connecting hole 174 and the second connecting hole 175 to connect the upper support 171 and the lower support 172. The fixing member 176 can be a bolt or a bolt and a nut. When the fixing member 176 is a bolt, the first connecting hole 174 or the second connecting hole 175 is provided with a thread, and the fixing member 176 is screwed with the first connecting hole 174 or the second connecting hole 175 to connect the upper support 171 and the lower support 172. When the fixing member 176 is a bolt and a nut, the bolt penetrates through the first connecting hole 174 and the second connecting hole 175, and the upper support 171 and the lower support 172 are connected by tightening the nut. Through the above improvement, when the angle of the barrel 3 needs to be adjusted, the fixing member 176 is loosened, the angle between the upper support 171 and the lower support 172 is adjusted accordingly, and after the angle is adjusted to a suitable angle, the fixing member 176 is tightened to tightly connect the upper support 171 and the lower support 172. This not only flexibly adapts to the angle adjustment of the barrel in the vertical direction, but also makes the installation more convenient.

[0041] The working principle of the present application is as follows: the starting motor 1 drives the auger 2 to rotate, the material is added from the feeding port 8, the spiral transmission of the auger 2 enables the material to be transported in the barrel 3, the turning transmission mechanism 4 transmits the material on the auger 2 to the adjacent next auger 2, and finally to the discharge port 9 at the end. When the angle between the adjacent two barrels 3 needs to be adjusted, the angle between the two barrels 3 can be adjusted manually due to the connection of the ball head 5 and the socket between the two barrels 3. After the horizontal adjustment of the angle between the adjacent two barrels 3, the barrel 3 is fixed on the rack or the ground by the fixed support base 16. After the vertical adjustment of the angle between the adjacent two barrels 3, the vertically adjusted barrel 3 is fixed on the rack or the ground by the movable support base 17.

[0042] The above description is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A screw conveyor, comprising an auger (2) for conveying materials, the auger (2) having an outer cylinder (3), the auger (2) including a rotating shaft (21) arranged along the center of the auger (2), and helical blades provided on the rotating shaft (21), characterized in that, There are multiple augers (2) and cylinders (3). A steering transmission mechanism (4) for transmitting rotational torque is connected between two adjacent rotating shafts (21). Two adjacent cylinders (3) are connected by a ball head (5) and a ball socket (6). The ball head (5) and the ball socket (6) are used to adjust the angle between the two cylinders (3). The ball head (5) is a hollow structure in the shape of a spherical crown. The ball socket (6) is a hemispherical bowl-shaped structure whose inner cavity is connected to the outer shape of the ball head (5). The ball head (5) and the ball socket (6) are movably connected.

2. The screw conveyor as described in claim 1, characterized in that, The ball head (5) and / or the ball socket (6) are provided with a connecting cylinder (7) connected to the cylinder body (3). The connecting cylinder (7) and the cylinder body (3) are respectively provided with flanges connected to each other. Both flanges are provided with a central hole for material to pass through. At least one flange is provided with a bushing (71) sleeved on the rotating shaft (21) at its center. The bushing (71) is fixedly connected to the corresponding flange through a support rod (72).

3. The screw conveyor as described in claim 1, characterized in that, The two ends of the steering transmission mechanism (4) connected to the rotating shaft (21) are the interface end (43), and the end of the rotating shaft (21) connected to the steering transmission mechanism (4) is the mating end (44); the interface end (43) is a cylindrical structure, and the mating end (44) is a solid shaft, or the interface end (43) is a solid shaft and the mating end (44) is a cylindrical structure.

4. The screw conveyor as described in claim 3, characterized in that, At least one interface end (43) has a helical blade on its side wall.

5. The screw conveyor as described in claim 1, characterized in that, The steering transmission mechanism (4) is a universal joint assembly consisting of two interconnected universal joints, including a first universal joint (41) and a second universal joint (42).

6. The screw conveyor as described in claim 5, characterized in that, The end where the first universal joint (41) connects to the second universal joint (42) is an intermediate shaft (45), and the end where the second universal joint (42) connects to the first universal joint (41) is a connecting shaft (46). The intermediate shaft (45) is a cylindrical structure, and the connecting shaft (46) is a solid shaft that mates with the intermediate shaft (45), or the intermediate shaft (45) is a solid shaft, and the connecting shaft (46) is a cylindrical structure that mates with the intermediate shaft (45).

7. The screw conveyor as described in claim 6, characterized in that, Helical blades are provided on the sidewalls of the intermediate shaft (45) and / or connecting shaft (46).

8. The screw conveyor as described in claim 1, characterized in that, The outer surface of the ball head (5) connected to the ball socket (6) is the outer spherical surface (51), and the inner surface of the ball socket (6) connected to the ball head (5) is the inner spherical surface (61). An annular groove (10) is provided on the outer spherical surface (51) or the inner spherical surface (61), and a sealing ring (11) is embedded in the annular groove (10). An oil inlet (12) is provided on the outside of the ball socket (6).

9. The screw conveyor as described in claim 1, characterized in that, The plurality of cylinders (3) include cylinders (3) that require angle adjustment and cylinders (3) that do not require angle adjustment. A fixed support seat (16) is provided on the cylinder (3) that does not require angle adjustment in the vertical direction, and a movable support seat (17) that is adjustable relative to the cylinder (3) is provided on the cylinder (3) that requires angle adjustment in the vertical direction.

10. The screw conveyor as described in claim 9, characterized in that, The movable support base (17) includes an upper support (171) connected to the cylinder and a lower support (172) connected to the upper support (171). A base (173) connected to the ground or frame is connected below the lower support (172). The upper support (171) is provided with a first connecting hole (174) and the lower support (172) is provided with a second connecting hole (175). The upper support (171) and the lower support (172) are connected by a fixing member (176) passing through the first connecting hole (174) and the second connecting hole (175).

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