Blockage removing device of spiral ship unloader

Abstract

The utility model provides an unblocking device of screw ship unloader, including screw conveyer, driven gear and hydraulic system, the hydraulic system includes hydraulic pump, hydraulic motor assembly and accumulator, the driving gear of hydraulic motor assembly is operably engaged with the driven gear, the driven gear is operably engaged with the hydraulic pump, and the driven gear is operably engaged with the accumulator. The driven gear is connected with a spiral shaft of the spiral conveyor, and the energy accumulator is connected to an output pipeline of the hydraulic pump. Through the arrangement of the driven gear and the hydraulic system with the hydraulic motor, low-speed and large-torque power can be provided for the spiral shaft when the spiral ship unloader is blocked, so that the spiral shaft is driven to rotate at a low speed, the effect of rapidly removing blockage is achieved, the energy accumulator is arranged in the hydraulic system, the hydraulic motor can be rapidly started with large torque, and the working efficiency is improved. And blockage removal is easier.

Description

Technical Field

[0001] This utility model relates to the field of screw unloader technology, and in particular to a deblocking device for a screw unloader. Background Technology

[0002] A screw unloader is a type of continuous bulk material unloading machine that uses the mechanical rotation of a screw mechanism to vertically lift and horizontally transport materials to a conveying system on a dock. It mainly consists of components such as a vertical boom, a horizontal boom, a turntable, a gantry, and a feeder. The vertical boom and horizontal boom are equipped with helical blade conveyors, and the head of the vertical boom is equipped with a reverse screw feeder.

[0003] Screw unloaders are widely used in ports, power, chemical, and food industries. They are suitable for horizontal, vertical, or any-angle unloading and are mainly used for conveying powdery, granular, or small-lump materials with low density, good flowability, and low abrasiveness, such as cement, fly ash, mineral powder, fertilizer, and grains. However, existing screw unloaders suffer from material blockage problems, which can easily cause the unloader to stop or even be damaged.

[0004] Current technology employs a method of simultaneously clearing blockages and rotating the rotor, using high-pressure water jets or sledgehammers to clear blockages, and a hand-operated hoist to rotate the rotor blades. This approach is often ineffective with hard materials and suffers from low efficiency and high labor intensity, severely hindering production. Currently, clearing blockages in commercially available screw unloaders often requires four to eight operators working for at least eight hours. Therefore, once a blockage occurs, the existing screw unloader requires prolonged downtime, wasting significant manpower and time, and greatly reducing equipment operating efficiency. There is an urgent need to improve the screw unloader's inability to quickly clear blockages. Utility Model Content

[0005] This utility model provides a deblocking device for a screw unloader, which aims to solve the problems mentioned in the prior art. When the screw unloader is blocked, it provides a low-speed, high-torque power to drive the screw to rotate at a low speed, thereby achieving the effect of quickly deblocking.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A deblocking device for a screw unloader is provided, comprising a screw conveyor, a driven gear, and a hydraulic system. The hydraulic system includes a hydraulic pump, a hydraulic motor assembly, and an accumulator. The driving gear of the hydraulic motor assembly is operably engaged with the driven gear. The driven gear is connected to the screw shaft of the screw conveyor, and the accumulator is connected to the output pipeline of the hydraulic pump.

[0008] In one embodiment, the hydraulic system includes a hydraulic pump, a hydraulic motor, an oil tank, an accumulator, and a shut-off valve. The hydraulic pump is connected to the hydraulic motor, the oil tank is connected to the hydraulic pump and the hydraulic motor, the accumulator is connected to a pipeline between the hydraulic pump and the hydraulic motor, and the shut-off valve is provided on the front end pipeline of the accumulator.

[0009] In one embodiment, the hydraulic system further includes a directional valve disposed on the inlet and outlet lines of the hydraulic motor, and the accumulator is connected to the line between the directional valve and the hydraulic pump.

[0010] In one embodiment, the hydraulic system further includes a relief valve connected to the output line of the hydraulic pump.

[0011] In one embodiment, the hydraulic motor assembly includes a housing, a hydraulic motor, a drive gear, a handle, a rotating shaft, a shift fork, an idler wheel, and an idler wheel shaft. The drive gear is operably engaged with the driven gear via the idler wheel. The hydraulic motor is fixed to the housing. The drive gear is connected to the output shaft of the hydraulic motor. The handle is rotatably connected to the housing via the rotating shaft. The rotating shaft is connected to the shift fork. The idler wheel is located within the fork of the shift fork. The idler wheel is slidably connected to the idler wheel shaft, and the idler wheel shaft is fixedly connected to the housing.

[0012] In one embodiment, the shift fork includes a rocker arm, a shift fork body, and a sliding rod. The rocker arm is connected to the rotating shaft, the shift fork body is slidably connected to the sliding rod, and the sliding rod is fixedly connected to the housing. The rocker arm has an elongated hole, and the shift fork body is inserted into the elongated hole.

[0013] In one embodiment, the handle can be rotated to two positions: open and closed. When the handle is rotated to the open position, the idler gear disengages from the driving gear and the driven gear. When the handle is rotated to the closed position, the idler gear engages with both the driving gear and the driven gear. A label is provided on the housing at the open and closed positions.

[0014] In one embodiment, a positioning pin is provided at the open position of the handle.

[0015] In one embodiment, a proximity switch is provided at the closed position of the handle, the proximity switch being electrically connected to the contactor of the control motor of the screw conveyor.

[0016] In one embodiment, the screw conveyor includes a motor, a reducer, a coupling, a screw shaft, a screw, and a feeder. The motor is connected to the reducer, the reducer is connected to the coupling, the coupling is connected to the screw shaft, the screw shaft has the screw, and the feeder is located at the bottom of the screw shaft. The coupling includes an upper universal joint, a safety coupling, and a lower universal joint. The safety coupling connects the upper universal joint and the lower universal joint. The upper universal joint is connected to the reducer, and the lower universal joint is connected to the screw shaft.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, through the installation of a driven gear and a hydraulic system with a hydraulic motor, can provide low-speed, high-torque power to the screw shaft when material blockage occurs in the screw unloader, thereby driving the screw to rotate at low speed and achieving the effect of quickly clearing the blockage. Moreover, by installing an accumulator in the hydraulic system, the hydraulic motor can be started quickly with high torque, making it easier to clear the blockage. Attached Figure Description

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the unblocking device for a screw unloader.

[0021] Figure 2 This is a schematic diagram of the hydraulic motor assembly.

[0022] Figure 3 This is a cross-sectional view of the hydraulic motor assembly.

[0023] Figure 4 This is a schematic diagram illustrating the working principle of a hydraulic system.

[0024] Figure label:

[0025] 1. Driven gear; 2. Hydraulic motor assembly; 2-1. Housing; 2-2. Hydraulic motor; 2-2-1. Drive gear; 2-3. Handle; 2-4. Proximity switch; 2-5. Positioning pin; 2-6. Rotating shaft; 2-7. Shift fork; 2-7-1. Rocker arm; 2-7-2. Shift fork body; 2-7-3. Sliding rod; 2-8. Idler wheel; 2-9. Idler wheel shaft; 3. Screw shaft; 4. Motor; 5. Reducer; 6. Coupling; 6-1. Upper universal joint; 6-2. Safety coupling; 6-3. Lower universal joint; 7. Screw; 8. Screw conveyor; 9. Feeder; 10. Hydraulic pump; 11. Oil tank; 12. Reversing valve; 13. Accumulator; 14. Shut-off valve; 15. Relief valve. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Please also refer to Figures 1 to 4 The deblocking device for the spiral unloader provided by this utility model will now be described.

[0031] A de-clogging device for a screw unloader, such as Figure 1 and Figure 4As shown, the system includes a screw conveyor 8, a driven gear 1, and a hydraulic system. The hydraulic system further includes the following components: a hydraulic pump 10, a hydraulic motor assembly 2, and an accumulator 13. The drive gear 2-2-1 of the hydraulic motor assembly 2 is operably engaged with the driven gear 1, which is connected to the screw shaft 3 of the screw conveyor 8. The accumulator 13 is connected to the output pipeline of the hydraulic pump 10. When blockage occurs in the screw unloader, the hydraulic system can provide low-speed, high-torque power to the screw shaft 3 through the driven gear 1, thereby driving the screw 7 to rotate at low speed, achieving a rapid unblocking effect. Moreover, by setting the accumulator 13 in the hydraulic system, the hydraulic motor 2-2 can be started quickly with high torque, making unblocking easier.

[0032] Specifically, such as Figure 4 As shown, the hydraulic system includes:

[0033] A hydraulic pump 10 is used to provide hydraulic power.

[0034] A hydraulic motor 2-2 is connected to a hydraulic pump 10 to convert hydraulic energy into mechanical energy.

[0035] An oil tank 11 is used to store hydraulic oil and is connected to a hydraulic pump 10 and a hydraulic motor 2-2.

[0036] An accumulator 13 is connected to the pipeline between the hydraulic pump 10 and the hydraulic motor 2-2. It is used to store and release pressure and has the function of stabilizing the system pressure. In this embodiment, the accumulator 13 is mainly used to store high pressure. When the hydraulic motor 2-2 needs to be started, the shut-off valve 14 is opened to connect the accumulator 13 to the pipeline, which can provide high pressure to the hydraulic motor 2-2 instantly, enabling the hydraulic motor 2-2 to start quickly with high torque, making it easier to clear blockages.

[0037] A shut-off valve 14 is installed on the front end of the accumulator 13 to control the flow of hydraulic oil.

[0038] During the unblocking process, the ability to adjust the forward and reverse rotation of the screw shaft 3 would be more beneficial for unblocking. Therefore, the hydraulic system can also be equipped with a reversing valve 12, which is installed on the inlet and outlet pipelines of the hydraulic motor 2-2. The accumulator 13 is connected to the pipeline between the reversing valve 12 and the hydraulic pump 10. With this configuration, the forward and reverse rotation of the hydraulic motor 2-2 can be achieved, thereby driving the screw shaft 3 to achieve forward and reverse rotation. It is best to use an electromagnetic reversing valve for the reversing valve 12 for easy control.

[0039] During the unblocking operation, if the spiral 7 is completely stuck with the material and cannot rotate even under the high torque of the hydraulic motor 2-2, in order to avoid hydraulic system overload leading to hydraulic system leakage or damage to the transmission mechanism, an overflow valve 15 is installed in the hydraulic system. The overflow valve 15 is connected to the output pipeline of the hydraulic pump 10.

[0040] like Figure 2 As shown, the hydraulic motor assembly 2 includes:

[0041] A housing 2-1 is used to fix and protect the internal components, and a hydraulic motor 2-2 is fixed to the housing 2-1.

[0042] A drive gear 2-2-1 is connected to the output shaft of the hydraulic motor 2-2. The drive gear 2-2-1 meshes with the driven gear 1 through an idler gear 2-8, thereby driving the helical shaft 3 to rotate.

[0043] A handle 2-3 is rotatably connected to the housing 2-1 via a rotating shaft 2-6, and is used to manually control the meshing of the driving gear 2-2-1 and the driven gear 1.

[0044] A shift fork 2-7 is connected to a pivot 2-6 and is used to control the position of the idler wheel 2-8.

[0045] An idler wheel 2-8 is located inside the fork of the shift fork 2-7 and is slidably connected to the idler wheel shaft 2-9. It is used to realize the engagement or disengagement of the driving gear 2-2-1 and the driven gear 1. The idler wheel shaft 2-9 is fixedly connected to the housing 2-1.

[0046] In one implementation, such as Figure 3 As shown, the shift fork 2-7 includes a rocker arm 2-7-1, a shift fork body 2-7-2, and a sliding rod 2-7-3. The rocker arm 2-7-1 is connected to the rotating shaft 2-6, the shift fork body 2-7-2 is slidably connected to the sliding rod 2-7-3, and the sliding rod 2-7-3 is fixedly connected to the housing 2-1. The rocker arm 2-7-1 has an elongated hole, into which the shift fork body 2-7-2 is inserted. When the handle 2-3 is rotated, the rotating shaft 2-6 drives the rocker arm 2-7-1 to rotate. The shift fork body 2-7-2 slides within the elongated hole due to the force exerted by the rocker arm 2-7-1. Simultaneously, the shift fork body 2-7-2 slides along the sliding rod 2-7-3, thereby driving the idler wheel 2-8 to slide on the idler wheel shaft 2-9. At this time, the shift fork body 2-7-2 and the idler wheel 2-8 are in surface contact. This design allows the idler wheel 2-8 to have a larger range of movement.

[0047] In other embodiments, the shift fork 2-7 can also be a fixed structure connecting the rotating shaft 2-6. The fork opening of the shift fork 2-7 should be designed to be relatively large. When the shift fork 2-7 rotates, the shift fork 2-7 and the idler wheel 2-8 are in line contact.

[0048] like Figure 2As shown, the handle 2-3 can be rotated to two positions: open and closed. When the handle 2-3 is rotated to the open position, the idler wheel 2-8 disengages from the driving gear 2-2-1 and the driven gear 1. When the handle 2-3 is rotated to the closed position, the idler wheel 2-8 simultaneously meshes with the driving gear 2-2-1 and the driven gear 1. There are identification plates on the housing 2-1 at the open and closed positions.

[0049] like Figure 2 As shown, during the unloading operation, to prevent misoperation, a positioning pin 2-5 is provided at the open position of the handle 2-3 to fix the handle 2-3 to the housing 2-1. A proximity switch 2-4 is provided at the closed position of the handle 2-3, and the proximity switch 2-4 is electrically connected to the contactor of the control motor 4 of the screw conveyor 8. When the handle 2-3 is rotated to the closed position, the proximity switch 2-4 is activated to cut off the power supply to the motor 4, thereby preventing the motor 4 from running.

[0050] The structure of screw conveyor 8 is as follows Figure 1 As shown in the diagram, the arrows indicate the material transport direction. The screw conveyor 8 includes a motor 4, a reducer 5, a coupling 6, a screw shaft 3, a screw 7, and a feeder 9. The motor 4 is connected to the reducer 5, the reducer 5 is connected to the coupling 6, and the coupling 6 is connected to the screw shaft 3. The screw shaft 3 has a screw 7, and the feeder 9 is located at the bottom of the screw shaft 3 for uniformly feeding materials. The coupling 6 includes an upper universal joint 6-1, a safety coupling 6-2, and a lower universal joint 6-3. The safety coupling 6-2 connects the upper universal joint 6-1 and the lower universal joint 6-3. The upper universal joint 6-1 is connected to the reducer 5, and the lower universal joint 6-3 is connected to the screw shaft 3, ensuring the stability and safety of power transmission. A driven gear 1 is installed on the screw shaft 3 in the area below the coupling 6 and above the discharge port of the screw conveyor 8. A hydraulic motor assembly 2 is installed to the side of the driven gear 1.

[0051] In summary, this utility model, by setting a driven gear 1 and a hydraulic system with a hydraulic motor 2-2, can provide low-speed, high-torque power to the screw shaft 3 when the screw unloader is blocked, thereby driving the screw 7 to rotate at low speed and achieving the effect of quickly clearing the blockage. Moreover, by setting an accumulator 13 in the hydraulic system, the hydraulic motor 2-2 can be started quickly with high torque, making it easier to clear the blockage.

[0052] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A de-clogging device for a screw unloader, characterized in that, The device includes a screw conveyor, a driven gear, and a hydraulic system. The hydraulic system includes a hydraulic pump, a hydraulic motor assembly, and an accumulator. The driving gear of the hydraulic motor assembly is operably engaged with the driven gear, which is connected to the screw shaft of the screw conveyor. The accumulator is connected to the output line of the hydraulic pump.

2. The de-clogging device for the screw unloader according to claim 1, characterized in that, The hydraulic system includes a hydraulic pump, a hydraulic motor, an oil tank, an accumulator, and a shut-off valve. The hydraulic pump is connected to the hydraulic motor, the oil tank is connected to the hydraulic pump and the hydraulic motor, and the accumulator is connected to the pipeline between the hydraulic pump and the hydraulic motor. The shut-off valve is provided on the pipeline at the front end of the accumulator.

3. The de-clogging device for the screw unloader according to claim 2, characterized in that, The hydraulic system also includes a directional valve, which is disposed on the inlet and outlet pipelines of the hydraulic motor, and the accumulator is connected to the pipeline between the directional valve and the hydraulic pump.

4. The de-clogging device for the screw unloader according to claim 3, characterized in that, The hydraulic system also includes a relief valve connected to the output line of the hydraulic pump.

5. The de-clogging device for the screw unloader according to claim 1, characterized in that, The hydraulic motor assembly includes a housing, a hydraulic motor, a drive gear, a handle, a rotating shaft, a shift fork, an idler wheel, and an idler wheel shaft. The drive gear is operably engaged with the driven gear via the idler wheel. The hydraulic motor is fixed to the housing. The drive gear is connected to the output shaft of the hydraulic motor. The handle is rotatably connected to the housing via the rotating shaft. The rotating shaft is connected to the shift fork. The idler wheel is located inside the fork of the shift fork. The idler wheel is slidably connected to the idler wheel shaft, and the idler wheel shaft is fixedly connected to the housing.

6. The de-clogging device for the screw unloader according to claim 5, characterized in that, The shift fork includes a rocker arm, a shift fork body, and a sliding rod. The rocker arm is connected to the rotating shaft, the shift fork body is slidably connected to the sliding rod, and the sliding rod is fixedly connected to the housing. The rocker arm has an elongated hole, and the shift fork body is inserted into the elongated hole.

7. The de-clogging device for a screw unloader according to claim 5, characterized in that, The handle can be rotated to two positions: open and closed. When the handle is rotated to the open position, the idler wheel disengages from the driving gear and the driven gear. When the handle is rotated to the closed position, the idler wheel engages with both the driving gear and the driven gear. A label is provided on the housing at the open and closed positions.

8. The de-clogging device for a screw unloader according to claim 7, characterized in that, A positioning pin is provided at the open position of the handle.

9. The de-clogging device for a screw unloader according to claim 7, characterized in that, A proximity switch is provided at the closed position of the handle, and the proximity switch is electrically connected to the contactor of the control motor of the screw conveyor.

10. The de-clogging device for a screw unloader according to any one of claims 1-9, characterized in that, The screw conveyor includes a motor, a reducer, a coupling, a screw shaft, a screw, and a feeder. The motor is connected to the reducer, the reducer is connected to the coupling, the coupling is connected to the screw shaft, the screw is mounted on the screw shaft, and the feeder is located at the bottom of the screw shaft. The coupling includes an upper universal joint, a safety coupling, and a lower universal joint. The safety coupling connects the upper universal joint and the lower universal joint. The upper universal joint is connected to the reducer, and the lower universal joint is connected to the screw shaft.

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