Spiral material taking device and spiral ship unloader

Abstract

The spiral material taking device comprises a permanent magnet motor installed in the material taking device in an embedded mode, and the permanent magnet motor is provided with a hollow inner cavity allowing a spiral conveying device to be installed and a driving part connected with the upper section of a material taking device in a direct drive mode; the upper section of the material taking device is fixedly connected with the driving part and the feeding head; a reverse spiral blade of the upper section of the material taking device can continuously convey materials in a cabin under the action of direct driving force of the driving part; and the feeding head is arranged on a feeding section at the lower part of the upper section of the material taking device and can be driven by the upper section of the material taking device to feed materials into a feeding hole in the bottom of the spiral conveying device. A traditional two-stage speed reduction transmission mode is replaced, a hollow permanent magnet motor direct drive scheme is adopted, the spiral conveying device is installed in the permanent magnet motor, the installation requirement of the spiral conveying device is met, meanwhile, the spiral conveying device has the advantages of being low in speed, large in torque, efficient in transmission and high in impact resistance, full-load starting and repeated starting can be achieved, and the service life of the spiral conveying device is prolonged. And the layout is compact and maintenance is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of bulk material transportation, and more specifically, to a screw reclaimer and a screw ship unloader including the screw reclaimer. Background Art

[0002] In existing screw ship unloaders, the lower part of the vertical screw is equipped with a reclaiming device, that is, the feeder feeds the bulk materials in the cabin into the feed port at the bottom of the screw, and then the materials are fully enclosed and discharged out of the cabin through the high-speed rotation of the screw shaft. Among them, whether it is domestic or foreign technology, the reclaiming device is basically driven by a reduction motor or a hydraulic motor, which has many transmission links, complex structure, large appearance, and low transmission efficiency. Especially for screw ship unloaders with an output of more than 1000t / h, the drive method of the feeder has faced a structural bottleneck.

[0003] In view of this, how to provide a spiral feeding device with higher transmission efficiency, better transmission accuracy and simpler structure is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The present application provides a spiral material taking device, which adopts a hollow permanent magnet motor direct drive solution in an innovative way to realize continuous and efficient material taking drive of spiral conveying, and mainly solves the technical problems of many transmission links and low transmission efficiency in traditional drive methods. It has a simple structure, compact layout, energy saving and power saving, and can realize full load starting and multiple repeated starting, and is particularly suitable for large-capacity spiral ship unloaders with an output of more than 1000t / h.

[0005] The present application also provides a screw ship unloader including the above-mentioned screw material taking device, and the screw ship unloader can realize efficient and high-precision transportation of cabin materials.

[0006] The present application provides a spiral material taking device, comprising:

[0007] A permanent magnet motor is embedded in the motor installation chamber of the material taking device, wherein the permanent magnet motor has a hollow inner cavity for the screw conveying device to be installed, and a driving part directly connected to the upper section of the material taking device;

[0008] The upper section of the material taker has a reverse spiral blade that rotates in the opposite direction to the spiral shaft blade. The upper section of the material taker is fixedly connected to the driving part and the feeding head, and the reverse spiral blade of the upper section of the material taker can continuously press down and convey the cabin materials under the direct driving force of the driving part;

[0009] A feeding head is arranged at the feeding section at the lower part of the upper section of the material taker, and the feeding head can feed the material into the feeding port at the bottom of the screw conveying device under the drive of the upper section of the material taker.

[0010] In some embodiments, the permanent magnet motor comprises:

[0011] An inner stator having the hollow inner cavity, the inner ring of the inner stator being fixedly connected to the outer conveying tube;

[0012] An outer rotor, whose outer ring drives the connected housing;

[0013] A slewing bearing, wherein the outer ring of the slewing bearing is fixedly connected to the housing and the upper section of the material extractor, and the inner ring of the slewing bearing is fixedly connected to the outer conveying tube;

[0014] An end cover, which is mounted on the top of the outer shell and the outer delivery tube, and the end cover is fixedly connected with the outer shell and the outer delivery tube to form the motor installation chamber;

[0015] Cables and cooling oil pipes, wherein the cables are connected to the winding coils of the inner stator and are led out together with the cooling oil pipes to be connected to an external power source, and the cooling oil pipes connect the permanent magnet motor with an external cooling device;

[0016] The driving part is specifically an outer rotor.

[0017] In some embodiments, a seal is further included, which is disposed between the end cover and the permanent magnet motor and is used to prevent cooling oil inside the permanent magnet motor from leaking out and to block external objects from entering.

[0018] In some embodiments, it also includes an inner cavity step surface arranged on the upper section of the material extractor to support the lower support of the feeding head.

[0019] In some embodiments, the cables and cooling oil pipes pass through the flange of the outer delivery pipe.

[0020] The spiral feeding device provided in the present application adopts a hollow direct-drive permanent magnet motor, which is directly embedded and installed in the motor installation chamber of the feeding device. The feeding device is directly driven to rotate by the driving part, eliminating the two-stage reduction transmission in the traditional drive structure, greatly simplifying the drive structure, and the drive structure does not occupy the installation space outside the feeding device. Not only is the layout more compact and the external dimensions are correspondingly reduced, the installation space occupied is smaller, the application range is wider, and maintenance is more convenient.

[0021] In addition, compared with the traditional reduction motor or hydraulic motor drive method, the permanent magnet motor direct drive solution adopted in this application has the characteristics of low speed and high torque, higher transmission efficiency, better impact resistance, can achieve full load starting and multiple repeated starts, save energy and electricity, and is more in line with today's green and environmental protection development concept, and has broad application prospects.

[0022] In addition, the present application also provides a screw ship unloader, including a screw feeding device working inside a cabin, a conveying outer tube arranged in the installation cavity of the screw feeding device, and a screw shaft installed inside the conveying outer tube. The screw feeding device is specifically a screw feeding device described in any one of the above items.

[0023] In some embodiments, the outer conveying tube includes an upper section and a lower section, each of which is provided with a flange, and the flange of the upper section and the lower section are fixedly connected to the inner ring of the bearing.

[0024] In some embodiments, the flange of the lower section of the outer conveying pipe is provided with holes through which the cables and cooling oil pipes can pass.

[0025] The screw ship unloader provided in the present application adopts an installation scheme in which the material reclaiming drive device is embedded in the material reclaiming device, and an installation scheme in which the screw conveying device is installed in the screw reclaiming device. The layout is very clever and compact, and a permanent magnet motor direct drive scheme is adopted, which has good driving accuracy and high efficiency. The technical problems of multiple transmission links, low transmission accuracy and low transmission efficiency caused by traditional hydraulic motor drive, electric motor drive and planetary reducer drive modes are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the structure of a screw ship unloader provided in a specific embodiment of the present application;

[0028] Figure 2 A cross-sectional view of a permanent magnet motor provided in a specific embodiment of the present application;

[0029] Among them, 1-permanent magnet motor, 2-upper section of the material taker, 3-feeding head, 4-lower support, 5-screw shaft, 6-upper section of the outer conveying tube, 7-lower section of the outer conveying tube, 8-housing;

[0030] 11-inner stator, 12-outer rotor, 13-slewing bearing, 14-end cover, 15-cable and cooling oil pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] refer to Figure 1 and Figure 2 The present application provides a spiral material taking device, which mainly includes a permanent magnet motor 1, a material taking device upper section 2 and a feeding head 3.

[0033] The permanent magnet motor 1 is embedded and installed in the motor installation chamber of the material picking device. The permanent magnet motor 1 has a hollow inner cavity, which is a through cavity distributed along the axial direction of the permanent magnet motor 1, and its inner diameter is larger than the outer diameter of the screw conveying device to ensure that the screw conveying device can be installed as a whole in the hollow inner cavity of the permanent magnet motor 1. The permanent magnet motor 1 has a driving part, which is directly connected to the upper section 2 of the material picking device to provide power for the material picking device to achieve direct drive of the upper section 2 of the material picking device.

[0034] The outer circumference of the upper section 2 of the material grabber is provided with a reverse spiral blade, which is welded to the outer wall of the upper section 2 of the material grabber. The rotation direction of the reverse spiral blade is opposite to that of the blade of the spiral shaft 5. The reverse spiral blade is used to press downwardly convey the material in the cabin during rotation, and the blade of the spiral shaft 5 is used to convey the material in the conveying outer tube and the feeding head 3 upward. The upper section 2 of the material grabber is fixedly connected to the driving part, and the reverse spiral blade of the upper section 2 of the material grabber can continuously press downwardly convey the cabin material under the direct driving force of the driving part.

[0035] The upper section 2 of the reclaimer is fixedly connected to the feeding head 3, and the upper section 2 of the reclaimer presses the materials in the cabin downward. The feeding head 3 is arranged at the feeding section at the lower part of the upper section 2 of the reclaimer. Driven by the upper section 2 of the reclaimer, the feeding head 3 can continuously feed the materials into the feeding port at the bottom of the screw conveying device, and provide a continuous flow of materials for the screw shaft 5.

[0036] This application adopts a hollow direct-drive permanent magnet motor, which cleverly integrates the screw conveyor and the material reclaiming device into one, with a compact structure, energy saving and environmental protection, and fully utilizes the low speed and high torque characteristics of the permanent magnet motor, which is particularly suitable for the severe working conditions of frequent starting and overloading of the material reclaiming device. In addition, the permanent magnet motor has the characteristics of intelligent control, which makes it easy to realize remote control and unmanned operation of the screw ship unloader.

[0037] In a specific embodiment, the permanent magnet motor 1 comprises: an inner stator 11, an outer rotor 12, a slewing bearing 13, an end cover 14, and a cable and a cooling oil pipe 15. The driving part mentioned above is specifically the outer rotor 12.

[0038] The inner stator 11 has a hollow inner cavity, and the inner ring of the inner stator 11 is fixedly connected to the outer conveying tube through a locking piece. The outer ring of the outer rotor 12 is fixedly connected to the outer shell 8 through a locking piece, and the outer rotor 12 is fixed to the outer ring of the slewing bearing 13 through the outer shell 8. During the rotation of the outer rotor 12, the outer shell 8 is driven to rotate synchronously, thereby driving the outer ring of the slewing bearing 13 to rotate. The bottom of the outer ring of the slewing bearing 13 is connected to the upper section 2 of the material extractor through a locking piece. The inner ring of the slewing bearing 13 is fixedly connected to the outer conveying tube. The slewing bearing 13 is the supporting body of the entire permanent magnet motor. The outer ring of the slewing bearing 13 is fixedly connected to the outer shell 8 and the upper section 2 of the material extractor through a locking piece. The outer ring of the slewing bearing 13 receives the outer shell 8 and the upper section 2 of the material extractor, and drives the upper section 2 of the material extractor to rotate synchronously under the drive of the outer shell 8.

[0039] The end cover 14 is mounted on the top of the outer shell 8 and the outer conveying tube. The end cover 14 is fixedly connected with the outer shell 8 and the outer conveying tube through a locking piece to form a motor installation chamber. The permanent magnet motor 1 is installed in the motor installation chamber.

[0040] The cable and cooling oil pipe 15 pass through the flange of the lower section 7 of the outer transmission pipe. In the cable and cooling oil pipe 15, the cable is connected to the winding coil of the inner stator 11, and is led out together with the cooling oil pipe to be connected to the external power supply. The cooling oil pipe is connected to the permanent magnet motor and the external cooling device to provide a guarantee for the continuous and reliable operation of the permanent magnet motor.

[0041] When the inner stator 11 is powered on, according to the working principle of the permanent magnet motor 1, the outer ring of the slewing bearing 13 rotates with the outer rotor 12, thereby driving the upper section 2 of the material grabber and the feeding head 3 at the lower part of the upper section 2 of the material grabber to rotate, thereby realizing the feeding work of the material grabber.

[0042] Therefore, in this embodiment, the inner stator 11 adopts a hollow structure to facilitate the installation of the screw conveying device therein, and the outer rotor adopts a direct drive mode to directly drive the material taking device to perform continuous, high-precision and efficient feeding.

[0043] In order to improve the sealing performance of the motor installation chamber, a seal can be arranged between the end cover 14 and the permanent magnet motor 1. The seal can be a sealing ring, etc. The seal can prevent the cooling oil inside the permanent magnet motor 1 from leaking out, and at the same time block external objects from entering the installation chamber, so as to ensure the performance of the permanent magnet motor, ensure the normal operation of the permanent magnet motor, and extend the service life of the permanent magnet motor.

[0044] In addition, an inner cavity step surface is arranged on the lower inner wall of the upper section 2 of the material picker near the feeding head 3, and a lower support 4 is arranged on the inner cavity step surface of the upper section 2 of the material picker to provide support for the feeding head 3 to ensure the smooth operation of the entire material picking device.

[0045] In addition, the present application also provides a screw ship unloader, including a screw material taking device, a conveying outer pipe and a screw shaft 5.

[0046] The spiral material taking device works inside the cabin, and the spiral shaft 5 and the outer conveying tube form the spiral conveying device, and the spiral conveying device is installed in the installation cavity of the spiral material taking device as a whole. Specifically, the outer conveying tube is arranged in the installation cavity of the spiral material taking device, and the spiral shaft 5 is installed inside the outer conveying tube. The spiral material taking device of the present application is specifically the above-mentioned spiral material taking device.

[0047] In order to facilitate loading and unloading of the outer tube, the outer tube is a split structure, mainly composed of two parts, including an upper section 6 and a lower section 7. The upper section 6 and the lower section 7 are each provided with a flange, and the flange of the upper section 6, the flange of the lower section 7 and the inner ring of the bearing are fixedly connected by a locking member. The upper section 6 and the lower section 7 cooperate with the screw shaft 5 to realize fully enclosed feeding during the material conveying process.

[0048] The screw shaft 5 is driven by a reduction motor (not shown) at the top, and relies on the high-speed rotation of the blades of the screw shaft 5 to transport the bulk materials from bottom to top until they are unloaded from the cabin. The upper section 6 and the lower section 7 of the outer conveying pipe not only cooperate with the feeding work of the screw shaft 5, but also ensure the full sealing during the material conveying process.

[0049] On the basis of this embodiment, a perforation is provided on the flange of the lower section 7 of the outer delivery tube to facilitate the passage of the cable and the cooling oil pipe 15, thereby saving the layout space of the cable and the cooling oil pipe 15. The outer delivery tube may also be an integral structure, or a three-section structure, or a four-section structure, etc. The specific structure of the outer delivery tube is not limited herein.

[0050] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0051] The above is a detailed introduction to the screw reclaimer and screw ship unloader provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A spiral material taking device, characterized in that: include: A permanent magnet motor (1) is embedded in a motor installation chamber of the material taking device, wherein the permanent magnet motor (1) has a hollow inner cavity for installing a screw conveying device, and a driving part directly connected to the upper section (2) of the material taking device; The upper section (2) of the material taker has a reverse spiral blade with a rotation direction opposite to that of the blade of the spiral shaft (5), the upper section (2) of the material taker is fixedly connected to the driving part and the feeding head (3), and the reverse spiral blade of the upper section (2) of the material taker can continuously press down and convey the cabin material under the direct driving force of the driving part; A feeding head (3) is arranged at the feeding section at the lower part of the upper section (2) of the material taker, and the feeding head (3) can feed the material into the feeding port at the bottom of the screw conveyor device under the drive of the upper section (2) of the material taker.

2. The spiral material taking device according to claim 1, characterized in that: The permanent magnet motor (1) comprises: An inner stator (11) having the hollow inner cavity, the inner ring of the inner stator (11) being fixedly connected to the outer conveying tube; An outer rotor (12), the outer ring of which is drivingly connected to the housing (8); A slewing bearing (13), wherein the outer ring of the slewing bearing (13) is fixedly connected to the outer shell (8) and the upper section (2) of the material extractor, and the inner ring of the slewing bearing (13) is fixedly connected to the outer conveying pipe; An end cover (14) is mounted on the top of the outer shell (8) and the outer delivery tube, and the end cover (14) is fixedly connected to the outer shell (8) and the outer delivery tube to form the motor installation chamber; Cables and cooling oil pipes (15), the cables being connected to the winding coils of the inner stator (11) and being led out together with the cooling oil pipes to be connected to an external power source, the cooling oil pipes connecting the permanent magnet motor with an external cooling device; The driving part is specifically the outer rotor (12).

3. The spiral material taking device according to claim 2, characterized in that: It also includes a sealing member disposed between the end cover (14) and the permanent magnet motor (1) for preventing cooling oil inside the permanent magnet motor (1) from leaking out and blocking external objects from entering.

4. The spiral material taking device according to any one of claims 1 to 3, characterized in that: It also includes an inner cavity step surface arranged on the upper section (2) of the material extractor and a lower support (4) for supporting the feeding head (3).

5. The spiral material taking device according to claim 2, characterized in that: The cable and cooling oil pipe (15) pass through the flange of the outer delivery pipe.

6. A screw ship unloader, comprising a screw reclaiming device operating inside a ship cabin, a conveying outer tube arranged in a mounting cavity of the screw reclaiming device, and a screw shaft (5) installed inside the conveying outer tube, characterized in that: The spiral material taking device is specifically the spiral material taking device described in any one of claims 1 to 5 above.

7. The screw ship unloader according to claim 6, characterized in that: The outer delivery pipe comprises an upper delivery pipe section (6) and a lower delivery pipe section (7), each of which is provided with a flange, and the flange of the upper delivery pipe section (6) and the flange of the lower delivery pipe section (7) are fixedly connected to the inner ring of the bearing.

8. The screw ship unloader according to claim 7, characterized in that: The flange of the lower section (7) of the outer delivery pipe is provided with holes through which cables and cooling oil pipes (15) can pass.

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