CN219905768U - Screw conveyor - Google Patents

Abstract

The utility model provides a screw conveyor, which comprises a conveyor body, wherein a movable support is arranged at the bottom of the conveyor body, a driving device, a feeding port, a discharging port, a first powder discharge port and a second powder discharge port are arranged on the conveyor body, two recovery devices corresponding to the first powder discharge port and the second powder discharge port are arranged on two sides of the movable support, an elastic wall sleeve is arranged inside the conveyor body, the length of the elastic wall sleeve is smaller than the feeding length of the conveyor body and lower than the height of the conveying tail end of the conveyor body, a powder discharge pipe movably nested with the first powder discharge port is arranged on the bottom surface of the elastic wall sleeve, a powder pumping port is arranged on the side wall of the powder discharge pipe, a piston column is arranged inside the powder discharge pipe, and a telescopic cylinder is arranged at the bottom of the piston column and is connected with the bottom end of the powder discharge pipe. The device has reasonable design, simple structure and higher conveying efficiency, can directly recycle powder, and is suitable for large-scale popularization.

Description

Screw conveyor

Technical Field

The utility model belongs to the field of material conveying and processing equipment, and particularly relates to a screw conveyor.

Background

Screw conveyors are one of the more commonly used conveying devices for conveying solid materials and liquid materials, and can perform the function of vertical lifting or inclined lifting, have better conveying capacity, and are quite widely applied, especially in coal mines, refuse yards, other yards and the like.

The prior patent CN202021885584.2 discloses a screw conveyor and a movable screw conveyor, and relates to the technical field of bearing fixing devices in mechanical equipment, and the screw conveyor comprises a machine shell, a driving mechanism and screw blades, wherein the screw blades are provided with rotating shafts, the screw blades are arranged in the machine shell, bearings are respectively arranged at the positions, close to two ends, of the machine shell, the rotating shafts at the two ends of the screw blades are respectively and correspondingly connected with the bearings, and the rotating shafts are in transmission connection with the driving mechanism; the top lateral wall of casing has seted up the feed inlet, the discharge gate has been seted up to the bottom lateral wall of casing, just the casing the feed inlet with correspond the side first row of powder mouth has been seted up at the position between the bearing, the casing the discharge gate with correspond the side the second row of powder mouth has been seted up at the position between the bearing. The two-end bearings of the device reduce the invasion of materials, so that the two-end bearings are greatly protected, and the service cycle is prolonged. However, in actual use, if the first powder discharge port is in a normally open condition, the position is continuously provided with coal dust to drop, so that the blanking conveying efficiency is affected, the workload of cleaning the coal dust is increased, and in practice, a part of the coal dust can be returned to a conveying path along with the driving of the spiral blade without being immediately discharged; furthermore, the first powder discharging port has no powder discharging power, and although the powder can be discharged smoothly at the beginning, the subsequent powder discharging flow is influenced once the powder is bridged; secondly, the first powder discharge port and the second powder discharge port are required to be provided with corresponding bearing devices, otherwise, the working environments of workshops and factories are affected.

Disclosure of Invention

Aiming at the technical problems of the screw conveyor, the utility model provides the screw conveyor which has reasonable design, simple structure and higher conveying efficiency and can directly recycle powder.

In order to achieve the above purpose, the technical scheme includes that the screw conveyor provided by the utility model comprises a conveyor body, wherein a movable support is arranged at the bottom of the conveyor body, a driving device, a feeding port and a discharging port are arranged on the conveyor body, a first powder discharge port and a second powder discharge port are respectively arranged at positions, close to the feeding port and the discharging port, of the conveyor body, two recovery devices corresponding to the first powder discharge port and the second powder discharge port are arranged on two sides of the movable support, an elastic wall sleeve is arranged in the conveyor body, the length of the elastic wall sleeve is smaller than the feeding length of the conveyor body and lower than the height of the conveying end of the conveyor body, the section of the elastic wall sleeve is elliptical, an elastic cohesion interface node is arranged on the side surface of the elastic wall sleeve, a powder discharge pipe movably nested with the first powder discharge port is arranged on the side wall of the powder discharge pipe, a piston column is arranged in the powder discharge pipe, the bottom of the piston column is provided with a telescopic cylinder connected with the telescopic cylinder.

Preferably, a pair of roll shafts in contact fit with the outer top surface of the elastic wall sleeve are arranged at the inner top of the conveyor body.

Preferably, the interface node comprises an inner lamination and an outer lamination, wherein the thickness of the inner lamination and the outer lamination is smaller than the wall thickness of the elastic wall sleeve, and the elliptical long axis direction of the elastic wall sleeve is parallel to the plane where the two roll shafts are located.

Preferably, the aperture shape of the first powder discharge port is elliptical.

Preferably, the recovery device comprises a sliding block, the sliding block is movably matched with a lifting hole arranged on the movable support, a connecting rod is arranged on the outer side of the sliding block, and a recovery bucket is arranged at the end part of the connecting rod.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. according to the screw conveyor provided by the utility model, the elastic wall sleeve can be properly stretched under the condition that the internal materials are expanded, and the conveying caliber can be reduced when the materials are reduced, so that the efficiency of discharging the materials to the discharge port along the conveying path is improved, and the pressure of the first powder discharge port and the second powder discharge port is reduced; the telescopic cylinder is used as the driving force of the piston column to regularly pull the piston column, so that the material at the first powder port is discharged from the powder discharge pipe and the powder pumping port under the negative pressure condition, the amount of the material falling into the bearing is reduced, the actual conveying efficiency of the material is ensured, and the treatment pressure of the powder is reduced; the recovery device is used for collecting the powder discharged by the conveyor body. The device has reasonable design, simple structure and higher conveying efficiency, can directly recycle powder, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a screw conveyor according to an embodiment;

FIG. 2 is a cross-sectional view of a conveyor body, a flexible wall sleeve, a piston and a telescoping cylinder provided in an embodiment;

FIG. 3 is a schematic cross-sectional view of a portion of a mobile carriage and or recovery device according to an embodiment;

in the above figures, 1, a conveyor body; 2. a movable support; 3. a driving device; 4. a feed inlet; 5. a discharge port; 6. a first powder discharge port; 7. a second powder discharge port; 8. a recovery device; 81. a slide block; 82. a connecting rod; 83. a recovery bucket; 9. an elastic wall sleeve; 91. an interface node; 911. an inner lamination; 912. an outer lamination; 92. a powder discharge pipe; 93. a powder pumping port; 10. a piston column; 11. a telescopic cylinder; 12. and (3) a roll shaft.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are merely used herein to denote a correspondence with the upper, lower, left, and right directions of the drawing figures, and are not limiting on the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

The embodiment of the utility model provides a screw conveyor as shown in fig. 1, 2 and 3, which comprises a conveyor body 1, wherein a movable bracket 2 is arranged at the bottom of the conveyor body 1, a driving device 3, a feeding port 4 and a discharging port 5 are arranged on the conveyor body 1, and a first powder discharge port 6 and a second powder discharge port 7 are respectively arranged at positions, close to the feeding port 4 and the discharging port 5, of the conveyor body 1. On the basis, two recovery devices 8 corresponding to the first powder discharge port 6 and the second powder discharge port 7 are arranged on two sides of the movable support 2, an elastic wall sleeve 9 is arranged in the conveying machine body 1, and the length of the elastic wall sleeve 9 is smaller than the feeding length of the conveying machine body 1 and lower than the conveying tail end height of the conveying machine body 1, so that the high-position port of the elastic wall sleeve 9 does not influence the discharge of materials from the discharge port 5; the section shape of the elastic wall sleeve 9 is elliptical, the side face of the elastic wall sleeve is provided with an elastic cohesion interface node, the bottom surface of the elastic wall sleeve 9 is provided with a powder discharge pipe 92 movably nested with the first powder discharge port 6, the side wall of the powder discharge pipe 92 is provided with a powder pumping port 93, a piston column 10 is arranged in the powder discharge pipe 92, the bottom of the piston column 10 is provided with a telescopic cylinder 11, and the telescopic cylinder 11 is connected with the bottom end of the powder discharge pipe 92.

Specifically, the elastic wall sleeve 9 can be properly opened under the condition of expanding the internal materials, the delivery caliber can be reduced when the materials are reduced, the materials with the reduced volume can be returned to the spiral blades in the delivery machine body 1, most of the materials are discharged to the discharge port 5 along the delivery path by the spiral blades, and the pressure of the first powder discharge port 6 and the second powder discharge port 7 is reduced. The elastic wall sleeve 9 is of an elliptical design, and the reserved space in the direction of the major axis of the ellipse can enable redundant materials to effectively press the inner wall of the elastic wall sleeve, so that the materials have a dynamic balance effect in the radial direction, and especially when the materials are unbalanced, the elastic wall sleeve 9 and the spiral blades can generate relative displacement, and the efficiency of returning the materials to a conveying path is improved. The telescopic cylinder 11 is arranged on the discharge direction of the first powder discharge port 6 and used as the driving force of the piston column 10, the piston column 10 can be regularly pulled, the piston column 10 performs the function of a valve core, and the material of the first powder discharge port 6 is discharged from the powder pumping port 93 on the side surface of the powder discharge pipe 92 under the negative pressure condition, so that the material quantity falling into a bearing is reduced, the actual conveying efficiency of the material is ensured, and the recovery operation quantity after the powder is discharged is reduced. The recovery device 8 is used for collecting the powder discharged by the conveyor body 1.

In order to improve the dynamic stability of the elastic wall sleeve 9, the utility model is provided with a pair of roll shafts 12 which are in contact fit with the outer top surface of the elastic wall sleeve 9 at the inner top of the conveyor body 1, the roll shafts 12 can limit the elliptical long axis direction of the elastic wall sleeve 9, and when the interface node of the elastic wall sleeve 9 contracts and expands, the roll shafts 12 can apply an action counter force to enable the elastic wall sleeve 9 to recover towards the balance direction, and the phenomenon that the movement amplitude of the elastic wall sleeve 9 is overlarge to influence the conveying efficiency inside the conveyor body 1 is avoided.

In order to improve the relative tightness of the elastic wall sleeve 9, the interface node provided by the utility model comprises an inner lamination 911 and an outer lamination 912, wherein the thicknesses of the inner lamination 911 and the outer lamination 912 are smaller than the wall thickness of the elastic wall sleeve 9, and the elliptical long axis direction of the elastic wall sleeve 9 is parallel to the plane of the two roll shafts 12. In this way, the interface node of the elastic wall sleeve 9, except for providing a reasonable collapsing condition for the elastic wall sleeve 9, does not cause the material to pass through the interface node in a large area and fall into the cavity between the elastic wall sleeve 9 and the conveyor body 1. The distribution characteristic of the elastic wall sleeve 9 in the elliptical long axis direction is beneficial to controlling the material to enter the powder discharge pipe 92 along the lower path of the spiral blade.

Considering that the powder discharge tube 92 has a certain displacement along with the elastic wall sleeve 9, in order to improve the matching performance of the powder discharge tube 92 and the first powder discharge port 6, the aperture shape of the first powder discharge port 6 provided by the utility model is elliptical, thereby providing a moving displacement space for the powder discharge tube 92.

In order to improve the practicability of the recovery device 8, the recovery device 8 provided by the utility model comprises a sliding block 81, wherein the sliding block 81 is movably matched with a lifting hole arranged on a movable support 2, a connecting rod 82 and a bolt for connecting the sliding block 81 and the movable support 2 are arranged on the outer side of the sliding block 81, and a recovery bucket 83 is arranged at the end part of the connecting rod 82. The height position of the recovery device 8 is adjustable, and the recovery device can be better connected with the powder discharged from the first powder discharge port 6 and the second powder discharge port 7 after being adjusted according to actual needs.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (5)

1. The utility model provides a screw conveyer, includes the conveyor body, the bottom of conveyor body is provided with the movable support, be provided with drive arrangement, feed inlet and discharge gate on the conveyor body, the conveyor body is provided with first row powder mouth and second row powder mouth respectively in its position that is close to feed inlet and discharge gate, a serial communication port, the both sides of movable support are provided with two recovery unit that correspond with first row powder mouth and second row powder mouth, the inside of conveyor body is provided with the elastic wall cover, the length of elastic wall cover is less than the pay-off length of conveyor body and is less than the terminal height of conveyor body, the cross section shape of elastic wall cover is oval and its side is provided with the interface node that the elasticity was embraced, the bottom surface of elastic wall cover is provided with the row powder pipe that is nested with first row powder mouth activity, be provided with the powder on the lateral wall of row powder pipe and take out the mouth, the inside of arranging the powder pipe is provided with the piston post, the bottom of piston post is provided with the telescopic cylinder, the telescopic cylinder is connected with row powder pipe's bottom.

2. A screw conveyor according to claim 1, wherein the inner top of the conveyor body is provided with a pair of rollers in contact engagement with the outer top surface of the elastomeric wall sleeve.

3. A screw conveyor according to claim 2, wherein the interface node comprises inner and outer laminations having a thickness less than the wall thickness of the elastomeric wall sleeve, the elliptical major axis of the elastomeric wall sleeve being parallel to the plane of the two rollers.

4. A screw conveyor according to claim 3, wherein the first row of powder openings has an oval shape in caliber.

5. The screw conveyor according to claim 4, wherein the recovery device comprises a slider movably engaged with a lifting hole provided in the moving bracket, a connecting rod is provided at an outer side of the slider, and a recovery bucket is provided at an end of the connecting rod.