A retractable screw conveyor

Abstract

The present invention relates to the technical field of screw conveyors, specifically a retractable screw conveyor, comprising a motor, a conveyor tube body with through ends, and a spiral feeding device arranged in the conveyor tube body, the conveyor tube body being provided with several closable feed ports along its length; the spiral feeding device comprising a rotating shaft fixedly connected coaxially with the motor shaft and rotating blades arranged on the rotating shaft, the motor being driven by a driving device to move repeatedly laterally; one end of the conveyor tube body is blocked by a slider, the slider slides along the length direction of the conveyor tube body and is arranged on the feed side of the conveyor tube body, the rotating shaft passes through the slider and is rotatably connected to the slider. The use of the present application can move the rotating shaft by moving the motor, thereby driving the movement of the rotating blades, so that even if a plurality of feed ports are provided on the conveyor tube body, it can be ensured that each feed port can be fed, thereby increasing the scope of application of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of screw conveyors, in particular to a telescopic screw conveyor. Background Art

[0002] A screw conveyor is a material conveying equipment that uses rotating spiral blades to push materials to transport them.

[0003] Screw conveyors are categorized into two types: shafted and shaftless. They are also categorized into U-shaped and tubular types. Shafted screw conveyors are suitable for conveying non-sticky dry powders and small particles (e.g., cement, fly ash, lime, grain, etc.), while shaftless screw conveyors are suitable for conveying sticky and easily entangled materials.

[0004] When using existing screw conveyors with shafts, the rotating shaft cannot move horizontally, so only single-point feeding is possible. When multiple materials need to be conveyed, the materials need to be fed at the same feeding position each time, which makes it difficult to use and has a narrow scope of application. Summary of the Invention

[0005] The present invention provides a telescopic screw conveyor to solve the defects in the prior art.

[0006] The present invention is achieved through the following technical solutions:

[0007] A telescopic screw conveyor comprises a motor, a conveyor tube body with through-holes at both ends, and a screw feeding device arranged in the conveyor tube body. The conveyor tube body is provided with several closable feed ports along its length. The screw feeding device comprises a rotating shaft coaxially fixedly connected to the motor shaft and rotating blades arranged on the rotating shaft. The motor is driven by a driving device to move repeatedly laterally. One end of the conveyor tube body is blocked by a slider. The slider slides along the length of the conveyor tube body and is arranged on the feed side of the conveyor tube body. The rotating shaft passes through the slider and is rotatably connected to the slider.

[0008] When the present application is in use, the rotation of the motor shaft drives the rotation of the rotating shaft, and then drives the rotation of the rotating blades to realize material conveying. The slider plays a role of sealing. At the same time, because the motor can move repeatedly under the drive device, the movement of the motor drives the movement of the rotating shaft and the slider follows the movement, thereby driving the rotating blades to move repeatedly in the horizontal direction. Since the conveyor tube body is provided with several closable feed ports along its length, the feed ports at different positions can be opened according to needs. Under the movement of the rotating shaft, it can ensure that the material is conveyed at the feed port. The movement of the slider not only plays a role of pushing the material, but also plays a role of blocking the material, thereby realizing that different feed ports can convey materials, thereby increasing the scope of use of the equipment.

[0009] Preferably, the drive device comprises a fixedly mounted electric telescopic device and a slide rail, wherein a movable block is slidably mounted on the slide rail, the movable block supporting and fixedly connected to the motor housing, and the movable end of the electric telescopic device is fixedly connected to the movable block. The extension and contraction of the electric telescopic device drives lateral movement of the movable block, and the movement of the movable block drives lateral movement of the motor, thereby achieving repetitive lateral movement of the motor.

[0010] Preferably, the slider includes a cylindrical middle block and an annular block sleeved on the middle block, wherein the inner wall of the annular block is in contact with and fixedly connected to the inner wall of the middle block, and the outer wall of the annular block is in contact with the inner wall of the conveyor tube body. The middle block is transversely provided with a through hole, and the rotating shaft passes through the through hole and is rotatably connected to the middle block via a bearing. The through hole in the middle block and the bearing disposed therein ensure that the middle block moves synchronously with the rotating shaft and that the rotating shaft rotates along the middle block. The annular block, while providing a sealing effect, can reduce the contact area between the slider and the inner wall of the conveyor body, thereby reducing friction and making movement smoother.

[0011] Preferably, the annular block defines a cavity containing lubricating oil. An oil inlet is also defined on the side of the annular block, sealed by a sealing cap. The contact surface between the annular block and the conveyor tube body includes several oil outlets, which communicate with the interior of the cavity and are located at the bottom of the annular block. Gravity allows the lubricating oil in the cavity to partially flow out of the outlets, allowing it to diffuse between the conveyor tube body and the annular block, further reducing friction and ensuring smoother movement of the slider. The oil inlet facilitates oil delivery.

[0012] Preferably, the device further comprises a controller and a feed pipe, the feed pipe being connected to the feed port and sealed at the connection. The feed pipe is provided with an electromagnetic valve, and the electromagnetic valve and the electric telescopic device are controlled by the controller. The controller can accurately adjust the extension of the electromagnetic valve and the electric telescopic device to ensure automatic control of the feeding position.

[0013] The beneficial effects of the present invention are as follows: the use of the present application can move the rotating shaft by moving the motor, thereby driving the movement of the rotating blades, so that even if there are multiple feed ports on the feeder pipe body, it can be ensured that each feed port can feed, thereby increasing the scope of application of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural diagram of the ring block.

[0017] As shown in the figure:

[0018] 1. Motor, 2. Conveyor tube, 3. Rotating shaft, 4. Rotating blade, 5. Slider, 6. Electric telescopic device, 7. Slide rail, 8. Moving block, 9. Cavity, 10. Oil outlet, 11. Feed pipe, 12. Solenoid valve, 51. Ring block, 52. Intermediate block. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] A telescopic screw conveyor, such as Figure 1 and Figure 2 As shown. It includes a motor 1, an electric telescopic device 6, a controller, a feed pipe 11, a conveyor tube body 2 with two through-holes, and a spiral feeding device located within the conveyor tube body 2. The conveyor tube body 2 has several closable feed ports along its length. The feed pipe 11 is connected to the feed port and the connection is sealed. The feed pipe 11 is provided with a solenoid valve 12. The solenoid valve 12 and the electric telescopic device 6 are controlled by the controller. The spiral feeding device includes a rotating shaft 3 coaxially fixedly connected to the rotating shaft of the motor 1 and rotating blades 4 disposed on the rotating shaft 3. The motor 1 is driven by a driving device to move repeatedly laterally. One end of the conveyor tube body 2 is blocked by a slider 5, which slides along the length of the conveyor tube body 2 and is located on the feed side of the conveyor tube body 2. The rotating shaft 3 passes through the slider 5 and is rotatably connected to the slider 5.

[0021] The driving device includes a fixed electric telescopic device 6 and a slide rail 7, on which a moving block 8 is slidably provided. The moving block 8 supports the motor 1 housing and is fixedly connected to the motor 1 housing. The movable end of the electric telescopic device 6 is fixedly connected to the moving block 8, wherein the electric telescopic device 6 is an oil cylinder.

[0022] When the present application is in use, the rotation of the motor 1 shaft drives the rotation of the rotating shaft 3, and then drives the rotation of the rotating blades 4 to realize the conveying of materials. The slider 5 plays a role of sealing. At the same time, since the motor 1 can move repeatedly along the direction defined by the slide rail 7 under the drive of the electric telescopic device 6, the movement of the motor 1 drives the movement of the rotating shaft 3 and the slider 5 follows the movement, thereby driving the rotating blades 4 to move repeatedly in the horizontal direction. Since the conveyor tube 2 is provided with several closable feed ports along its length, the feed ports at different positions can be opened according to needs. Under the movement of the rotating shaft 3, it can ensure that the feed port can realize the feeding of materials. The movement of the slider 5 can not only play a role of pushing materials, but also play a role of blocking materials, thereby realizing that different feed ports can convey materials, thereby increasing the scope of use of the equipment.

[0023] The controller can precisely control the extension of the electromagnetic valve 12 and the electric telescopic device 6 to ensure automatic control of the feeding position. Specifically, when the feeding position needs to be changed, the electromagnetic valve 12 that is feeding the material is first closed. Then, the electric telescopic device 6 is controlled to move so that the front side of the rotating blade 4 moves to the feeding port. Then, the electromagnetic valve 12 is controlled to open and the motor 1 is started to achieve feeding.

[0024] The slider 5 includes a cylindrical middle block 52 and an annular block 51 sleeved on the middle block 52. There are two annular blocks 51, which can further enhance the sealing effect. The inner wall of the annular block 51 fits in place with the inner wall of the middle block 52 and is fixedly connected. The outer wall of the annular block 51 contacts and cooperates with the inner wall of the conveyor tube 2. The middle block 52 is laterally provided with a through hole, and the rotating shaft 3 passes through the through hole and is rotatably connected to the middle block 52 via a bearing. The through hole on the middle block 52 and the bearing set in the through hole can ensure that the middle block 52 moves synchronously with the rotating shaft 3 and that the rotating shaft 3 rotates along the middle block 52. While playing a sealing role, the annular block 51 can reduce the contact area between the slider 5 and the inner wall of the conveyor body, thereby reducing friction and making movement smoother.

[0025] An annular block 51 defines a cavity 9 filled with lubricating oil. An oil inlet is also provided on the side of the annular block 51, sealed by a sealing cap. Several oil outlets 10 are defined on the contact surface between the annular block 51 and the conveyor tube 2. These outlets 10 communicate with the interior of the cavity 9 and are located at the bottom of the annular block 51. Gravity allows some of the lubricating oil in the cavity 9 to flow out of the outlets 10, allowing it to diffuse between the conveyor tube 2 and the annular block 51. This further reduces friction and allows for smoother movement of the slider 5. The oil inlet facilitates oil delivery.

[0026] The use of the present application can move the rotating shaft 3 by moving the motor 1, thereby driving the movement of the rotating blade 4. Therefore, even if there are multiple feed ports on the feeder pipe body, it can be ensured that each feed port can feed, thereby increasing the scope of application of the equipment.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A telescopic screw conveyor, characterized in that: It includes a motor, a conveyor tube body with through ends and a spiral feeding device arranged in the conveyor tube body, and the conveyor tube body is provided with several closable feed ports along its length; the spiral feeding device includes a rotating shaft coaxially fixedly connected to the motor shaft and a rotating blade arranged on the rotating shaft, and the motor is driven by a driving device to move repeatedly laterally; one end of the conveyor tube body is blocked by a slider, and the slider slides along the length direction of the conveyor tube body and is arranged on the feed side of the conveyor tube body, and the rotating shaft passes through the slider and is rotatably connected to the slider; the driving device includes a fixed electric telescopic device and a slide rail, and a moving block is slidably provided on the slide rail, the moving block supports the motor housing and is fixedly connected to the motor housing, and the movable end of the electric telescopic device is fixedly connected to the moving block.

2. The telescopic screw conveyor according to claim 1, characterized in that: The slider includes a cylindrical middle block and an annular block sleeved on the middle block. The inner wall of the annular block fits and is fixedly connected to the inner wall of the middle block, and the outer wall of the annular block contacts and cooperates with the inner wall of the conveyor tube body. A through hole is opened horizontally in the middle block, and the rotating shaft passes through the through hole and is rotatably connected to the middle block through a bearing.

3. The telescopic screw conveyor according to claim 2, characterized in that: A cavity is provided in the annular block, and lubricating oil is provided in the cavity. An oil inlet hole is also provided on the side of the annular block, and the oil inlet hole is sealed by a sealing cover; a plurality of oil outlet holes are provided on the contact surface between the annular block and the conveyor pipe body, and the oil outlet holes are communicated with the inside of the cavity and are located at the lower part of the annular block.

4. The telescopic screw conveyor according to claim 1, characterized in that: It also includes a controller and a feed pipe. The feed pipe is connected to the feed port and the connection is sealed. An electromagnetic valve is provided on the feed pipe. The electromagnetic valve and the electric telescopic device are controlled by the controller.

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