Screw conveyer

Abstract

The utility model discloses a spiral conveyer, which relates to the technical field of conveying equipment and comprises a shell, a conveying spiral body, an anti-blocking shaftless spiral blade and a driving mechanism, and the conveying spiral body and the anti-blocking shaftless spiral blade are both arranged in the shell. The conveying spiral body and the anti-blocking shaftless spiral blade extend from one end of the shell to the other end of the shell, the anti-blocking shaftless spiral blade is arranged on the outer edge of the conveying spiral body, the spiral direction of the anti-blocking shaftless spiral blade is opposite to that of the conveying spiral body, and the anti-blocking shaftless spiral blade and the conveying spiral body are arranged in a staggered mode. During conveying, the conveying spiral body and the anti-blocking shaftless spiral blade rotate synchronously, and the anti-blocking shaftless spiral blade is arranged reversely, so that a reverse pushing effect is generated on materials on the outermost layer, the materials on the outer side can be shifted towards the central position of the conveying spiral body while the materials are reversely pushed, and the materials are prevented from being extruded in a stock bin or a shell; and the generation of blockage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a screw conveyor. Background Art

[0002] In garbage disposal, screw conveyance is a commonly used conveying equipment. The screw bodies of conventional screw conveyors include single - head screws and multi - head screws, which can only push materials in one direction. Therefore, it is easy for materials to be unidirectionally extruded and accumulate at the gaps. Since the composition of garbage is relatively complex, it is easy to cause blockage during the conveying process, especially at the connection between the screw at the bin outlet and the bin wall. Due to the increasing demand for the volume of the bin, the resistance of the materials becomes greater. The materials are complex and contain a large number of long strip - shaped materials, which are blocked between the gaps of the screw body and the wall plate. The starting resistance is greater than that during normal operation, and in severe cases, the screw body breaks and equipment such as motors is damaged.

[0003] In view of this, there is an urgent need for a screw conveyor that can prevent blockage. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the utility model solves these problems with the following technical structures.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A screw conveyor, comprising: a housing, a conveying screw body, a clog - preventing shaftless screw blade, and a driving mechanism. The conveying screw body and the clog - preventing shaftless screw blade are both arranged inside the housing. The conveying screw body and the clog - preventing shaftless screw blade both extend from one end of the housing to the other end of the housing. The clog - preventing shaftless screw blade is arranged on the outer edge of the conveying screw body. The spiral directions of the clog - preventing shaftless screw blade and the conveying screw body are opposite, and the clog - preventing shaftless screw blade and the conveying screw body are arranged in an interleaved manner;

[0007] The driving mechanism is used to drive the conveying screw body and the clog - preventing shaftless screw blade to rotate synchronously.

[0008] Further features thereof are that,

[0009] The conveying screw body is a shafted screw body.

[0010] The conveying screw body is a shaftless screw body.

[0011] The starting angle difference between the conveying screw body and the shaftless screw blade is from 90 degrees to 180 degrees.

[0012] The starting angle difference between the conveying screw body and the shaftless screw blade is 90 degrees.

[0013] The driving mechanism includes a motor, and the motor is arranged at one end of the housing.

[0014] The lower half of the cross-section of the said housing along the conveying direction is in a semi-circular arc shape.

[0015] A number of support frames are provided at the bottom of the said housing.

[0016] The said support frame is in an H shape.

[0017] Both ends of the top of the said support frame are respectively connected to the housing by bolts.

[0018] Adopting the above structure of the present utility model can achieve the following beneficial effects:

[0019] During conveying, the conveying spiral body and the anti-blocking shaftless spiral blade rotate synchronously. The conveying spiral body is arranged forward for conveying materials, while the anti-blocking shaftless spiral blade is arranged backward, generating a reverse pushing effect on the outermost layer of materials. It can push the materials backward and at the same time deflect the outer materials towards the central position of the conveying spiral body, avoiding the extrusion of materials in the silo or housing and preventing blockage; it also reduces the operating resistance of the equipment generated by the internal pressure of the materials and lowers the power required for the equipment during static start-up; due to the staggered arrangement of the anti-blocking shaftless spiral blade and the conveying spiral body, the stiffness of the spiral body itself is increased and the service life of the equipment is extended. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present application;

[0021] Figure 2 is a schematic structural diagram of the conveying spiral body and the anti-blocking shaftless spiral blade in the present application;

[0022] Figure 3 is Figure 1 an enlarged schematic structural diagram of part A in

[0023] In the figure: 1, housing; 2, conveying spiral body; 3, anti-blocking shaftless spiral blade; 4, motor; 5, support frame. Detailed Embodiments

[0024] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that the terms "including" and "having" and any variations thereof in the description, claims and the above-mentioned drawings of the present utility model are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0026] The following further elaborates on this application in conjunction with the Figures 1 - 3 accompanying drawings.

[0027] Referring to Figures 1 - 3 a screw conveyor shown, which includes: a housing 1, a conveying screw 2, an anti-blocking shaftless screw blade 3 and a driving mechanism. The conveying screw 2 and the anti-blocking shaftless screw blade 3 are both arranged inside the housing 1. The conveying screw 2 and the anti-blocking shaftless screw blade 3 both extend from one end of the housing 1 to the other end of the housing 1. The anti-blocking shaftless screw blade 3 is arranged along the outer edge of the conveying screw 2. The spiral directions of the anti-blocking shaftless screw blade 3 and the conveying screw 2 are opposite, and the anti-blocking shaftless screw blade 3 and the conveying screw 2 are arranged in an interleaved manner. The driving mechanism is used to drive the conveying screw 2 and the anti-blocking shaftless screw blade 3 to rotate synchronously. Thus, during conveying, the conveying screw 2 and the anti-blocking shaftless screw blade 3 rotate synchronously. The conveying screw 2 is arranged in the forward direction for conveying materials, while the anti-blocking shaftless screw blade 3 is arranged in the reverse direction, generating a reverse pushing effect (a force opposite to the material conveying direction) on the outermost layer of materials, which can push the materials backward while deflecting the outer layer of materials towards the central position of the conveying screw 2, avoiding the extrusion of materials in the silo or the housing 1 and preventing blockage; it also reduces the operating resistance of the equipment caused by the internal pressure of the materials and lowers the power required for the equipment during static startup; due to the interleaved arrangement of the anti-blocking shaftless screw blade 3 and the conveying screw 2, the stiffness of the screw itself is increased, and the service life of the equipment is extended.

[0028] Furthermore, preferably, the conveying screw 2 can be a shafted screw or a shaftless screw according to the usage requirements, and the starting angle difference between the conveying screw 2 and the shaftless screw blade 3 is 90 degrees to 180 degrees (such as 90 degrees, 120 degrees, 150 degrees, 180 degrees, etc.). Among them, the optimal angle difference is 90 degrees. During actual use, the angle difference can be adjusted adaptively according to requirements.

[0029] Referring to Figure 1 shown, the driving mechanism includes a motor 4. The motor 4 is arranged at one end of the housing 1. Power is provided by the motor 4 to drive the conveying screw 2 and the anti-blocking shaftless screw blade 3 to rotate synchronously. A speed reducer can also be arranged at the conveying end of the motor 4 according to requirements.

[0030] Referring to Figure 1As shown, the lower half of the cross section of the shell 1 along the conveying direction is semicircular, so that the bottom of the inner side of the shell 1 fits as closely as possible with the outer edges of the conveying spiral 2 and the anti-blocking shaftless spiral blades 3, making the conveying smoother.

[0031] refer to Figure 1 As shown, a plurality of support frames 5 are provided at the bottom of the shell 1 to support the shell 1 to transport materials, and the support frames 5 are H-shaped to make the support more stable, wherein the top ends of the support frames 5 are respectively connected to the shell by bolts for easy disassembly and assembly.

[0032] A further optimization is that the outer edge of the anti-blocking shaftless spiral blade 3 cross-section is designed with an acute angle, which generates an inward and backward thrust, plays a role in cutting off longer fiber materials, and at the same time plays a role in shifting materials in the positive direction inward, so that large particles that are easy to entangle with materials can pass through the positive direction inside.

[0033] The working principle of the utility model is as follows: during conveying, the conveying screw 2 and the anti-blocking shaftless spiral blade 3 rotate synchronously, the conveying screw 2 is set in the forward direction to convey materials, and the anti-blocking shaftless spiral blade 3 is set in the reverse direction to produce a reverse thrust on the outermost material, which can push the material back while shifting the outer material to the center of the conveying screw 2, thereby avoiding the material from being squeezed in the silo or the outer shell 1 and avoiding the occurrence of blockage; it also reduces the equipment running resistance caused by the internal pressure of the material and reduces the power required for the equipment during static start-up; since the anti-blocking shaftless spiral blade 3 and the conveying screw 2 are staggered, the rigidity of the screw itself is increased and the service life of the equipment is extended;

[0034] The rigidity of the spiral body is increased, the running resistance is reduced, the running power is reduced, the occurrence of broken shafts and burnt motors caused by equipment failures is reduced, and the safe operation of the equipment is ensured;

[0035] The device has a simple structure, low cost, and reliable performance, which greatly reduces the maintenance cost of the equipment and production line, and ensures the smooth operation of the production line and good economic performance.

[0036] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A screw conveyor, characterized in that: include: A housing (1), a conveying screw (2), an anti-blocking shaftless spiral blade (3) and a driving mechanism, wherein the conveying screw (2) and the anti-blocking shaftless spiral blade (3) are both arranged in the housing (1), the conveying screw (2) and the anti-blocking shaftless spiral blade (3) both extend from one end of the housing (1) to the other end of the housing (1), the anti-blocking shaftless spiral blade (3) is arranged on the outer edge of the conveying screw (2), the spiral directions of the anti-blocking shaftless spiral blade (3) and the conveying screw (2) are opposite, and the anti-blocking shaftless spiral blade (3) and the conveying screw (2) are staggered; The driving mechanism is used to drive the conveying screw (2) and the anti-blocking shaftless screw blade (3) to rotate synchronously.

2. A screw conveyor according to claim 1, characterized in that: The conveying screw (2) is an axial screw.

3. A screw conveyor according to claim 1, characterized in that: The conveying screw (2) is a shaftless screw.

4. A screw conveyor according to claim 1, characterized in that: The starting point angle difference between the conveying screw (2) and the shaftless spiral blade (3) is 90 degrees to 180 degrees.

5. A screw conveyor according to claim 4, characterized in that: The starting point angle difference between the conveying screw (2) and the shaftless spiral blade (3) is 90 degrees.

6. A screw conveyor according to claim 1, characterized in that: The driving mechanism comprises a motor (4), and the motor (4) is arranged at one end of the housing (1).

7. The screw conveyor according to claim 1, characterized in that: The lower half of the cross section of the shell (1) along the conveying direction is in a semicircular arc shape.

8. The screw conveyor according to claim 1, characterized in that: A plurality of support frames (5) are arranged at the bottom of the housing (1).

9. A screw conveyor according to claim 8, characterized in that: The support frame (5) is H-shaped.

10. A screw conveyor according to claim 9, characterized in that: The top ends of the support frame (5) are connected to the outer shell via bolts respectively.

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