CN111620052A

CN111620052A - Hollow multi-screw conveyer with shaft

Info

Publication number: CN111620052A
Application number: CN202010603831.3A
Authority: CN
Inventors: 马振波; 张建伟; 王伟; 王婷婷
Original assignee: Qingdao Fluid Technology Co ltd
Current assignee: Qingdao Fluid Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-09-04

Abstract

The invention discloses a hollow multi-screw conveyor with shafts, and belongs to the technical field of screw conveyors. The technical scheme is as follows: the device comprises a driving device and a plurality of spiral conveying pipes which are arranged in parallel, wherein the driving device comprises a driving device shell and a motor, and the motor is arranged on the driving device shell; the spiral conveying pipe is provided with openings penetrating through two ends of the spiral conveying pipe along the axial direction, the upper part of the spiral conveying pipe is provided with a feeding hole at the front end in the conveying direction, the tail end in the conveying direction is provided with a discharging hole, and one end of the spiral conveying pipe at the tail end in the conveying direction is provided with a blocking plate; a shaft is arranged in the spiral conveying pipe, and the front end and the rear end of the shaft are respectively installed on the shell of the driving device and the blocking plate through bearings. The invention not only keeps the characteristic of difficult blockage of the shaftless screw, but also combines the characteristic of high working strength and difficult deformation of the shafted screw, and the material is conveyed between the shaft and the inner wall of the screw, thereby having high working efficiency.

Description

Hollow multi-screw conveyer with shaft

Technical Field

The invention relates to the technical field of screw conveyors, in particular to a hollow multi-screw conveyor with a shaft.

Background

The current powder metering and conveying are most commonly carried out by using a screw conveyor, and the current screws are divided into shaft screws and shaftless screws, wherein the shaft screws and the shaftless screws have high working strength, but viscous materials are easy to adhere to blades and shafts and are difficult to convey; the latter can convey viscous materials and is not easy to block, but the spiral is easy to distort and deform once the blockage occurs in the conveying process due to the structural characteristics. And current auger delivery uses single tube single spiral as the owner, and the area of contact of spiral and material only is the spiral sectional area, to the material that easily bridges forms spiral idle running easily and does not blank, need increase area of contact and must increase the spiral diameter, and the processing degree of difficulty is big, and the cost is high.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the hollow multi-screw conveyor with the shafts overcomes the defects of the prior art, not only keeps the characteristic of no shaft screw that the shaft screw is not easy to block, but also combines the characteristic of high working strength and difficult deformation of the shaft screw, and materials are conveyed between the shafts and the inner wall of the screw, so that the working efficiency is high.

The technical scheme of the invention is as follows:

the hollow multi-screw conveyor with the shaft comprises a driving device and a plurality of screw conveying pipes which are arranged in parallel, wherein the driving device comprises a driving device shell and a motor, and the motor is arranged on the driving device shell; the spiral conveying pipe is provided with openings penetrating through two ends of the spiral conveying pipe along the axial direction, the upper part of the spiral conveying pipe is provided with a feeding hole at the front end in the conveying direction, the tail end in the conveying direction is provided with a discharging hole, and one end of the spiral conveying pipe at the tail end in the conveying direction is provided with a blocking plate; a shaft is arranged in the spiral conveying pipe, and the front end and the rear end of the shaft are respectively arranged on the shell of the driving device and the blocking plate through bearings; the spiral is sleeved outside the shaft, two ends of the spiral are respectively fixed on the shaft, a gap is reserved between the rest part of the spiral and the shaft, and the spiral is positioned in the spiral conveying pipe and is not contacted with the spiral conveying pipe; and a driving shaft of the motor drives one shaft to rotate through a gear and a driving gear chain, and adjacent shafts synchronously rotate through the gear and a synchronous gear chain respectively.

Preferably, in the driving device housing, one of the shafts is provided with an arc gear, and an angle sensor is arranged on the driving device housing and located at the arc gear, and the angle sensor is electrically connected with the controller.

Preferably, the upper part of the spiral conveying pipe is detachably provided with an access cover plate from the feed inlet to the tail end of the spiral conveying pipe.

Preferably, a support structure is fixedly arranged at the positions of the feed inlet and the discharge outlet at the bottom of the spiral conveying pipe.

Preferably, the supporting structure is U-shaped, and the top surface of the supporting structure is fixedly arranged at the bottom of the spiral conveying pipe; the top surface of the supporting structure is wave-shaped and is attached to the bottom surface of the spiral conveying pipe.

Preferably, the forward end of the shaft is mounted by bearings on opposite side walls of the drive housing.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts a shaftless spiral structure, the synchronous rotating shaft is arranged in the spiral, and a gap is arranged between the shaft and the spiral, so that the structure not only keeps the characteristic of the shaftless spiral that the blockage is not easy to occur, but also combines the characteristic of the shaft spiral that the working strength is high and the deformation is not easy to occur, the material is conveyed between the shaft and the inner wall of the spiral, and the working efficiency is high.

2. The invention adopts a structure of multiple spirals connected in parallel, compared with a structure of a single spiral, the invention greatly increases the contact area between the material at the feed inlet and the spirals, and the adjacent spirals form relative motion, thereby greatly reducing the probability of the material hanging and bridging.

3. According to the invention, the arc gear is arranged on the shaft, and the rotation turns of the arc gear are monitored in real time through the angle sensor and the controller, so that the conveying amount of materials is accurately calculated and controlled.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a bottom view of the present invention.

Fig. 4 is a top view of the present invention.

In the figure, 1-spiral conveying pipe, 2-driving device shell, 3-motor, 4-feeding hole, 5-discharging hole, 6-blocking plate, 7-shaft, 8-bearing, 9-spiral, 10-driving gear chain, 11-synchronous gear chain, 12-arc gear, 13-angle sensor, 14-maintenance cover plate and 15-supporting structure.

Detailed Description

Example 1

As shown in fig. 1-4, the present embodiment provides a hollow multi-screw conveyor with a shaft, which includes a driving device and a plurality of screw conveying pipes 1 arranged in parallel, the driving device includes a driving device housing 2 and a motor 3, the motor 3 is installed on the driving device housing 2; the spiral conveying pipe 1 is provided with openings penetrating through two ends of the spiral conveying pipe 1 along the axial direction, the upper part of the spiral conveying pipe 1 is provided with a feeding hole 4 at the front end in the conveying direction, the tail end in the conveying direction is provided with a discharging hole 5, and one end of the spiral conveying pipe 1 at the tail end in the conveying direction is provided with a blocking plate 6; a shaft 7 is arranged in the spiral conveying pipe 1, the front end and the rear end of the shaft 7 are respectively arranged on the driving device shell 2 and the blocking plate 6 through bearings 8, wherein the front end of the shaft 7 is arranged on two opposite side walls of the driving device shell 2 through the bearings 8 so as to increase the installation stability among the shaft 7, the spiral conveying pipe 1 and the driving device shell 2; the spiral 9 is sleeved outside the shaft 7, two ends of the spiral 9 are respectively fixed on the shaft 7, gaps are reserved between the rest parts of the spiral 9 and the shaft 7, the spiral 9 is positioned in the spiral conveying pipe 1 and is not in contact with the spiral conveying pipe 1, friction force is reduced, and noise is low; the driving shaft of the motor 3 drives one of the shafts 7 to rotate through a gear and a driving gear chain 10, the adjacent shafts 7 respectively rotate synchronously through the gear and a synchronous gear chain 11, the gear and the synchronous gear chain 11 are positioned in the driving device shell 2, and the driving gear chain 10 penetrates through the driving device shell 2 to be connected with the gear on one of the shafts 7.

The working principle is as follows:

the motor 3 is started, the driving shaft of the motor 3 rotates, the gear on the driving shaft drives the driving gear chain 10 to rotate, the driving gear chain 10 drives one of the shafts 7 in the spiral conveying pipe 1 to rotate through the gear, and the synchronous rotation between the shafts 7 and the shafts 7 is realized through the gear and the synchronous gear chain 11. Since both ends of the screw 9 are fixed to the shaft 7, the screw 9 fitted around the outside of the shaft 7 also rotates in synchronization with the shaft 7. Pour into the material from feed inlet 4 department of auger delivery 1 front end, the material falls into auger delivery 1 through the axial opening on auger delivery 1 in, and rethread pivoted spiral 9 is carried to 5 departments of the terminal discharge gate of auger delivery 1 to realize the transport of material.

The screw conveyer of this embodiment sets up axle 7 in spiral 9 on shaftless screw conveyer's basis, and spiral 9 all has the space except that all having between other parts and the axle 7 at both ends, has both remain shaftless screw conveyer's the difficult characteristics that block up like this, has also combined the big non-deformable characteristics of axle spiral conveying working strength, and the material is carried between axle 7 and spiral 9 inner wall, and work efficiency is high. And the screw conveyer of this embodiment adopts the parallelly connected structure of many auger delivery, greatly increased the area of contact of feed inlet 4 material and spiral 9, and because spiral 9 syntropy synchronous revolution, consequently must be in one between the adjacent spiral 9 and raise the material one with the sunken relative motion of material to the probability of the unsettled bridge of material has significantly reduced.

Example 2

On the basis of embodiment 1, in the driving device shell 2, one of the shafts 7 is provided with an arc gear 12, an angle sensor 13 is arranged on the driving device shell 2 at the position of the arc gear 12, the angle sensor 13 is electrically connected with a controller, and the gears are fixed on the shafts 7 through snap springs.

In the embodiment, the circular arc gear 12 is arranged on the shaft 7, the angle sensor 13 is used for detecting the teeth of the circular arc gear 12 and the gaps among the teeth, if 10 teeth are arranged on one gear, the angle sensor 13 detects that 10 teeth pass through, which means that the gear rotates for one circle, and means that the shaft 7 and the spiral 9 rotate for one circle, and the material pushing amount of the spiral 9 rotating for one circle is fixed, so that the material conveying amount can be accurately controlled and judged.

Example 3

On the basis of the embodiment 1, the upper part of the spiral conveying pipe 1 is detachably provided with an access cover plate 14 from the feeding hole 4 to the tail end of the spiral conveying pipe 1. The maintenance cover plate 14 is disassembled, so that the materials which are easy to harden can be conveniently cleaned, and the maintenance of the screw conveyor is also convenient; meanwhile, the upper part of the spiral conveying pipe 1 is provided with an axial opening, so that the maintenance cover plate 14 arranged above the spiral conveying pipe 1 can play a role of a sealing plate, and the leakage of dust materials is greatly reduced.

Example 4

On the basis of the embodiment 1, a support structure 15 is fixedly arranged at the bottom of the spiral conveying pipe 1 and is positioned at the feed inlet 4 and the discharge outlet 5, the support structure 15 is U-shaped, and the top surface of the support structure 15 is fixedly arranged at the bottom of the spiral conveying pipe 1; the top surface of the supporting structure 15 is wave-shaped and is attached to the bottom surface of the spiral conveying pipe 1. The top surface of the supporting structure 15 is designed into a wave shape and is attached to the bottom surface of the spiral conveying pipe 1, and the supporting structure can play a role in reinforcing and supporting the spiral conveying pipe 1.

Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Hollow has many screw conveyer of axle, its characterized in that:

the device comprises a driving device and a plurality of spiral conveying pipes (1) which are arranged in parallel, wherein the driving device comprises a driving device shell (2) and a motor (3), and the motor (3) is arranged on the driving device shell (2); the spiral conveying pipe (1) is provided with openings penetrating through two ends of the spiral conveying pipe (1) along the axial direction, the upper part of the spiral conveying pipe (1) is provided with a feeding hole (4) at the front end in the conveying direction, a discharging hole (5) at the tail end in the conveying direction, and one end of the spiral conveying pipe (1) at the tail end in the conveying direction is provided with a blocking plate (6);

a shaft (7) is arranged in the spiral conveying pipe (1), and the front end and the rear end of the shaft (7) are respectively installed on the driving device shell (2) and the blocking plate (6) through bearings (8); the spiral (9) is sleeved outside the shaft (7), two ends of the spiral (9) are respectively fixed on the shaft (7), gaps are reserved between the rest part of the spiral (9) and the shaft (7), and the spiral (9) is positioned in the spiral conveying pipe (1) and is not in contact with the spiral conveying pipe (1);

the driving shaft of the motor (3) drives one shaft (7) to rotate through a gear and a driving gear chain (10), and adjacent shafts (7) rotate synchronously through gears and a synchronous gear chain (11) respectively.

2. The hollow shafted multi-screw conveyor of claim 1, wherein: in the driving device shell (2), an arc gear (12) is installed on one shaft (7), an angle sensor (13) is installed at the position, located on the arc gear (12), on the driving device shell (2), and the angle sensor (13) is electrically connected with the controller.

3. The hollow shafted multi-screw conveyor of claim 1, wherein: and an overhauling cover plate (14) is detachably arranged at the upper part of the spiral conveying pipe (1) from the feed inlet (4) to the tail end of the spiral conveying pipe (1).

4. The hollow shafted multi-screw conveyor of claim 1, wherein: and a support structure (15) is fixedly arranged at the bottom of the spiral conveying pipe (1) and is positioned at the feed inlet (4) and the discharge outlet (5).

5. The hollow shafted multi-screw conveyor of claim 4, wherein: the supporting structure (15) is U-shaped, and the top surface of the supporting structure (15) is fixedly arranged at the bottom of the spiral conveying pipe (1); the top surface of the supporting structure (15) is wave-shaped and is attached to the bottom surface of the spiral conveying pipe (1).

6. The hollow shafted multi-screw conveyor of claim 1, wherein: the front end of the shaft (7) is mounted on two opposite side walls of the drive device housing (2) through bearings (8).