CN202609386U - Bin bottom spiral discharging device - Google Patents

Abstract

The utility model discloses a bin bottom spiral discharging device which comprises a fixed support arranged at the bottom of a feed bin, a rotating support rotatably arranged on the fixed support, a first driving device for driving the rotating support to rotate and a spiral shaft. The rotating central line of the rotating support is collinear with the rotating central line of the feed bin, a discharging port is arranged at the bottom of the rotating support, and a feeding port connected with the feed bin is arranged on the upper portion of the rotating support. The spiral shaft is arranged on the rotating support, and one end of the spiral shaft extends into the feed bin through the feeding port. During working of the bin bottom spiral discharging device provided by an embodiment, the rotating support drives the spiral shaft to rotate around the central line of the feed bin through power supplied by the first driving device, so that the spiral shaft can move to any angle of the feed bin bottom to convey materials, and material flowability is increased due to moving of the spiral shaft at the bin bottom. Therefore, discharging is achieved, arch breaking of materials in the feed bin can be achieved, materials are prevented from bridging and being blocked in the feed bin, and the purpose of high efficiency, stability and high automatic discharging is achieved.

Description

Bottom screw discharge device

technical field

The utility model relates to the field of conveying devices, in particular to a spiral discharge device at the bottom of a warehouse.

Background technique

At present, various bulk materials, such as wood chips, bark, fibers and crushed straw, are used in pulping, wood-based panels, biomass energy and other industries. The above-mentioned bulk materials are stored and utilized in silos in the production line. In order to ensure uniform material delivery on the production line, an automatic and uniform discharge device is needed to take the bulk materials out of the silo. For the automatic, continuous and stable operation of the feeding device, it is necessary to avoid the phenomenon of material bridging and material blocking in the warehouse. The phenomenon of material bridging means that the material forms an arch or bridge-like accumulation at the outlet of the silo, which hinders the downward flow of the material above.

At present, in factories, a conical bottom is mostly used under the silo, and the bottom of the silo is discharged by a vibrating discharge device or a screw discharge device. The phenomenon of material bridging, therefore, often requires manual cleaning, resulting in low production efficiency and high labor intensity, which seriously affects the continuity of production.

Therefore, how to avoid material bridging and material blocking in the silo is a technical problem to be solved urgently by those skilled in the art.

Utility model content

In view of this, the utility model provides a spiral discharge device at the bottom of the silo, so as to avoid the phenomenon of material bridging and material blocking in the silo.

In order to achieve the above object, the utility model provides the following technical solutions:

A silo bottom screw discharge device, comprising:

A fixed bracket set at the bottom of the silo;

The rotary bracket is rotatably arranged on the fixed bracket, the rotation centerline of the rotary bracket is collinear with the rotation centerline of the silo, the bottom of the rotary bracket has a discharge port, and the upper part has a The feed port connected to the silo;

a first driving device that drives the rotation of the slewing bracket;

The screw shaft is arranged on the slewing bracket and has one end extending into the silo from the feed inlet.

Preferably, in the above-mentioned screw discharge device at the bottom of the silo, the axial extension direction of the screw shaft is parallel to the inner wall of the bottom of the silo and arranged close to the inner wall of the bottom of the silo.

Preferably, in the above-mentioned screw discharge device at the bottom of the silo, the screw shaft includes:

spiral blade;

An installation shaft for installing the helical blade, the installation shaft is rotatably arranged on the rotary bracket;

A second driving device that is arranged on the slewing bracket and connected with the installation shaft.

Preferably, in the above-mentioned spiral discharge device at the bottom of the silo, the spiral blades are arranged in a form of variable pitch.

Preferably, in the above-mentioned spiral discharge device at the bottom of the silo, the spiral blade is a toothed blade.

Preferably, the above-mentioned bin bottom screw discharge device further includes a power supply device for providing power and electrical control signals to the first drive device and the second drive device.

Preferably, in the above-mentioned screw discharge device at the bottom of the silo, the first drive device includes a first motor and a first reducer connected to the output end of the first motor;

The second drive device includes a second motor and a second reducer connected to the output end of the second motor.

Preferably, in the above-mentioned screw discharge device at the bottom of the silo, both the first motor and the second motor are variable frequency motors.

Preferably, in the above-mentioned screw discharge device at the bottom of the silo, the first drive device drives the rotary support to rotate through a gear mechanism.

Preferably, in the above-mentioned spiral discharge device at the bottom of the silo, the contact between the upper part of the slewing bracket and the material is a conical top, and the feeding port is opened on the conical top.

It can be seen from the above technical solutions that in the screw discharge device at the bottom of the silo provided by the embodiment of the utility model, the power provided by the first driving device for the rotary support rotates around the center line of the silo, so the screw shaft arranged on the rotary support It can also rotate continuously around the center line of the silo with the slewing bracket, so that the screw shaft can move to any angle at the bottom of the silo, and the material at any angle at the bottom of the silo can be stirred and transported. Because the movement of the screw shaft at the bottom of the silo increases the fluidity of the material, it not only realizes the discharge, but also can break the arch of the material in the silo. Therefore, the screw discharge device at the bottom of the silo provided by the embodiment of the utility model It can prevent materials from bridging and blocking materials in the warehouse, and realizes the purpose of efficient, stable and highly automatic discharging.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a silo bottom screw discharge device provided by an embodiment of the present invention.

Detailed ways

The utility model discloses a spiral discharge device at the bottom of a warehouse, which can avoid the phenomenon of material bridging and material blocking in the warehouse.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, Fig. 1 is a structural schematic diagram of the screw discharge device at the bottom of the silo provided by the embodiment of the present invention.

The screw discharge device at the bottom of the silo provided by the embodiment of the utility model includes a fixed bracket 1, a rotary bracket 2, a first driving device 6 and a screw shaft.

Wherein, the fixed support 1 is arranged at the bottom of the silo, so that the slewing support 2 can be stably assembled at the bottom of the silo.

The rotary bracket 2 is rotatably arranged on the fixed bracket 1, and its rotation centerline is in line with the rotation centerline of the silo, and the bottom of the slewing bracket 2 has a discharge port 8, and the upper part has a feed port communicating with the silo 9. The material in the silo can enter the rotary support 2 through the feed port 9 and be discharged from the discharge port 8.

The screw shaft is arranged on the rotary support 2, and one end extends into the silo from the feed port 9, the first driving device 6 drives the rotary support 2 to rotate, and at the same time, the screw shaft can follow the rotation of the rotary support 2 and also revolve around the silo The centerline rotates so that the end protruding into the silo scrapes the inner wall of the silo.

When the screw discharge device at the bottom of the silo provided by the embodiment of the utility model is working, the rotary support 2 rotates around the center line of the silo through the power provided by the first driving device 6, so the screw shaft arranged on the rotary support 2 can also rotate along with it. The support 2 rotates continuously around the central line of the silo, so that the screw shaft can move to any angle at the bottom of the silo, and the material at any angle at the bottom of the silo can be stirred and transported. Because the movement of the screw shaft at the bottom of the silo increases the fluidity of the material, it not only achieves the purpose of discharging, but also can break the arch of the material in the silo. Therefore, the spiral discharge of the silo bottom provided by the embodiment of the utility model The device can prevent materials from bridging and blocking materials in the warehouse, and realize the purpose of efficient, stable and highly automatic discharge.

In this embodiment, the relative rotation technology of the rotary bracket 2 and the fixed bracket 1 is easy for those skilled in the art. For example, the rotary bracket 2 can be rotatably arranged on the fixed bracket 1 through a rotary support 5 The two parts of the slewing bearing 5 connected with the fixed bracket 1 and the slewing bracket 2 can rotate relatively. The so-called relatively rotatable technology is also easy for those skilled in the art, such as through grease or bearings.

In order to further optimize the above technical solution, the extension direction of the axis of the screw shaft is parallel to the inner wall of the bottom of the silo and arranged close to the inner wall of the bottom of the silo, so that when the screw shaft moves to any angle at the bottom of the silo, it is also stirred to the bottom of the silo Any part of the material at the bottom, leaving no dead space. Those skilled in the art can understand that the closer the screw shaft is to the inner wall at the bottom of the silo, the better the scraping effect on the material adhered to the inner wall at the bottom of the silo, and the better the cleaning effect on the material. There is a certain gap between the inner walls of the bottom, otherwise the screw shaft cannot rotate due to the existence of friction.

In order to further optimize the above technical solution, the screw shaft includes a screw blade 11 , an installation shaft 3 and a second driving device 4 .

Wherein, the surface of the installation shaft 3 is provided with a helical blade 11 , and is rotatably arranged on the rotary bracket 2 , and the second driving device 4 is arranged on the rotary bracket 2 and connected with the installation shaft 3 .

The screw blade 11 is installed on the installation shaft 3 by welding or riveting, the installation shaft 3 is fixed on the rotary bracket 2 through the bearing 10, and the second driving device 4 is installed on the installation shaft 3 where the screw shaft protrudes from the discharge port 9 of the silo. end, and drive the screw shaft to rotate, thereby driving the screw blade 11 to move, and realize the purpose of automatic material taking, conveying and discharging.

In this embodiment, the helical blades 11 on the helical shaft can be arranged in the form of variable pitch, and can also use toothed blades or non-toothed blades, variable-diameter helical blades or equal-diameter helical blades according to different materials. 11 concrete type, the utility model is not limited.

In this embodiment, a power supply device 7 is also included to realize the purpose of automatic control. The power supply device 7 provides uninterrupted power supply and electrical control signals for the whole bin bottom discharging device. In order to ensure that the power supply device 7 can provide stable power and electrical control signals no matter which direction and position the rotary bracket 2 rotates relative to the fixed bracket 1, the power supply device 7 provided by the utility model can be powered by a circular trolley line , or flexible cable power supply.

In order to further optimize the above technical solution, the first driving device 6 includes a first motor and a first speed reducer connected to the output end of the first motor;

The second drive device includes a second motor and a second speed reducer connected to the output end of the second motor.

In this embodiment, the second motor adopts a variable frequency motor with stable start and small starting current to realize the adjustment of the rotating speed and realize the stepless adjustment of the conveying volume;

The first motor can be a variable frequency motor or a torque motor according to different materials. The speed of this type of motor can be adjusted, and the speed at which the slewing bracket 2 rotates around the center of the bin can be adjusted;

The second reducer adopts a hollow shaft-mounted reducer to facilitate installation and compact structure;

The output shaft of the first reducer is parallel to the center of the silo, and the slewing bracket 2 is driven to rotate through the gear mechanism, so as to realize stable and high-efficiency transmission;

The first motor and the first reducer are directly connected, and the structure is compact;

The second motor and the second reducer adopt the form of an integrated gear motor, and the structure is compact.

In order to further optimize the above-mentioned technical scheme, the contact between the upper part of the rotary support 2 and the material is a conical top 12, and the feed inlet 9 is set on the conical top 12, wherein the conical top 12 can reduce the friction between the rotary support 2 and the material when it rotates .

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A spiral discharge device at the bottom of a warehouse, characterized in that it comprises: A fixed bracket (1) arranged at the bottom of the silo; The rotary support (2) rotatably arranged on the fixed support (1), the rotation center line of the rotary support (2) is collinear with the rotary center line of the silo, and the rotary support (2) The bottom has a discharge port (8), and the upper part has a feed port (9) communicating with the silo; a first drive device (6) that drives the rotation of the slewing bracket (2); The screw shaft is arranged on the rotary bracket (2), and one end extends into the feed bin from the feed port (9). 2. The silo bottom screw discharge device according to claim 1, characterized in that, the extension direction of the axis of the screw shaft is parallel to the inner wall of the bottom of the silo and arranged close to the inner wall of the bottom of the silo. 3. The silo bottom screw discharge device according to claim 1, wherein the screw shaft comprises: Spiral blades (11); An installation shaft (3) for installing the spiral blade (11), the installation shaft (3) is rotatably arranged on the rotary support (2); A second driving device (4) arranged on the slewing support (2) and connected to the installation shaft (3). 4. The silo bottom screw discharge device according to claim 3, characterized in that, the screw blades (11) are arranged in a form of variable pitch. 5. The silo bottom screw discharge device according to claim 3, characterized in that, the screw blade (11) is a toothed blade. 6. The bin bottom screw discharge device according to claim 3, characterized in that it also includes a power supply for providing power and electrical control signals for the first driving device (6) and the second driving device (4) device (7). 7. The silo bottom screw discharge device according to claim 3, characterized in that, the first driving device (6) includes a first motor and a first reducer connected to the output end of the first motor; The second drive device includes a second motor and a second reducer connected to the output end of the second motor. 8. The silo bottom screw discharge device according to claim 7, characterized in that both the first motor and the second motor are variable frequency motors. 9. The bin bottom screw discharge device according to claim 1, characterized in that, the first driving device (6) drives the rotary bracket (2) to rotate through a gear mechanism. 10. The silo bottom screw discharge device according to claim 1, characterized in that, the contact between the upper part of the rotary support (2) and the material is a conical top (12), and the feeding port (9) is opened at on the top of the cone (12).

Images