CN209918085U

CN209918085U - Novel hollow pushing screw propeller

Info

Publication number: CN209918085U
Application number: CN201822266423.4U
Authority: CN
Inventors: 季大鹏; 单威伟; 李志文
Original assignee: Green Ltd By Share Ltd
Current assignee: Green Ltd By Share Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-01-10
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses a novel interior sky pushes away material screw propeller, including spiral core pipe, be fixed with a set of bracing piece that distributes along spiral core pipe center spiral on spiral core pipe's the outer profile face, spiral core pipe's the outside is equipped with helical blade, and helical blade welded fastening is in each bracing piece department, is provided with clear liquid flow channel between helical blade's medial extremity and spiral core pipe's the outer profile face. The utility model discloses structural design is ingenious, reasonable, can ensure the bracing piece atress, can not cause too much atress to helical blade for helical blade uses the condition that can not take place welding area and take place the fracture for a long time, and life is longer, is worth popularizing and applying.

Description

Novel hollow pushing screw propeller

Technical Field

The utility model relates to a propeller, especially a novel sky pushes away material screw propeller.

Background

The spiral propeller is an important component of a horizontal spiral sedimentation centrifuge, and the principle is as follows: the rotary drum and the spiral propeller rotate at a high speed in the same direction at a certain differential speed, materials are continuously introduced into the conveying spiral inner cylinder through the feeding pipe and enter the rotary drum after being accelerated, under the action of centrifugal force, the heavier solid-phase substances are deposited on the wall of the rotary drum to form a sediment layer, the spiral blades continuously push the deposited solid-phase substances (namely sludge) to the conical end of the rotary drum and discharge the solid-phase substances out of the machine through a sediment discharge port, the lighter liquid-phase substances form an inner-layer liquid ring and continuously overflow from an overflow port at the large end of the rotary drum and are discharged out of the machine through a liquid discharge port, the spiral blades on the traditional spiral propeller are directly welded on the outer contour surface of the spiral core tube, in this way, the pressure applied to the helical blade is very high, and not only the solid phase material is discharged, but also the water pressure facing the clear liquid is required, therefore, after the centrifugal machine is used for a long time, the welding position between the spiral blade and the spiral core pipe can generate a crack, and the spiral propeller needs to be detached from the centrifugal machine for maintenance seriously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide one kind can greatly reduced helical blade pressure, make helical blade long service life's novel interior empty helical propeller that pushes away, satisfied the enterprise to helical propeller long service life, demand with low costs.

The utility model provides a technical scheme that its technical problem adopted: the novel hollow pushing spiral propeller comprises a spiral core pipe, wherein a group of support rods spirally distributed along the center of the spiral core pipe are fixed on the outer contour surface of the spiral core pipe, spiral blades are arranged on the outer side of the spiral core pipe and welded and fixed at the positions of the support rods, and a clear liquid flowing channel is arranged between the inner side end of each spiral blade and the outer contour surface of the spiral core pipe. The supporting rods have the effects that most of stress can be borne by the supporting rods, the acting force of transverse load borne by the helical blades is greatly reduced, and the stress of a single supporting rod is small and uniform due to the fact that the supporting rods are arranged in large quantity, so that the service life of the helical blades can be greatly prolonged; the clear liquid flow channel is used for separating solid phase from clear liquid to discharge, clear liquid can be discharged through the clear liquid flow channel, and solid phase is discharged by the pushing of the helical blade (as shown in figure 3).

Further perfection, a group of threaded holes matched with the positions of the support rods are formed in the spiral core pipe, threaded sections are arranged at the bottoms of the support rods, the support rods are matched with the threaded holes through the threaded sections, and the joints of the support rods and the spiral core pipe are welded together. The threaded holes and the threaded sections have the effect that the support rod can be conveniently fixed at the spiral core pipe; the joint of the support rod and the spiral core tube is welded, so that the strength between the support rod and the spiral core tube can be further enhanced, and the support rod can bear stronger thrust load.

The support rod comprises a first rod and a second rod, the cross section of the second rod is larger than that of the first rod, the helical blade is supported at the top end of the second rod and is welded and fixed at the first rod, and the thread section is located at the second rod.

The utility model discloses profitable effect is: the utility model has the advantages of ingenious and reasonable structural design, most of the stress can be borne by the support rods through the support rods, the acting force of the transverse load borne by the helical blade is greatly reduced, and the stress of a single support rod is very small and even because the support rods are arranged in a large number, thereby greatly prolonging the service life of the helical blade; the clear liquid flow channel is utilized to discharge the solid-phase substances and the clear liquid separately, the clear liquid can be discharged through the clear liquid flow channel, and the solid-phase substances are discharged by being pushed by the helical blades, so that the device is worthy of popularization and application.

Drawings

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

FIG. 2 is an enlarged view of a portion of the area A of FIG. 1;

fig. 3 is a schematic diagram of the present invention.

Description of reference numerals: the device comprises a spiral core pipe 1, a threaded hole 1-1, a support rod 2, a threaded section 2-1, a rod I2-2, a rod II 2-3, a spiral blade 3, a clear liquid flow channel 4, a rotary drum 5, a solid-phase object 6 and clear liquid 7.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the novel hollow pushing spiral propeller comprises a spiral core pipe 1, wherein a group of support rods 2 which are spirally distributed along the center of the spiral core pipe 1 are fixed on the outer contour surface of the spiral core pipe 1, spiral blades 3 are arranged on the outer side of the spiral core pipe 1, the spiral blades 3 are welded and fixed at the positions of the support rods 2, and a clear liquid flow channel 4 is arranged between the inner side end of each spiral blade 3 and the outer contour surface of the spiral core pipe 1.

The spiral core tube 1 is provided with a group of threaded holes 1-1 which are respectively matched with the positions of the support rods 2, the bottom of each support rod 2 is provided with a threaded section 2-1, the support rods 2 are matched with the threaded holes 1-1 through the threaded sections 2-1, and the joints of the support rods 2 and the spiral core tube 1 are welded together.

The supporting rod 2 comprises a first rod 2-2 and a second rod 2-3, the cross section of the second rod 2-3 is larger than that of the first rod 2-2, the helical blade 3 is supported at the top end of the second rod 2-3 and is welded and fixed at the first rod 2-2, and the thread section 2-1 is located at the second rod 2-3.

The utility model discloses a theory of operation: the mixture of materials and liquid enters into the rotary drum 5 after being accelerated by a feeding pipe (not shown in the figure), the rotary drum 5 and the spiral propeller rotate at a high speed in the same direction with a certain differential speed, under the action of centrifugal force, heavier solid-phase materials 6 are deposited on the wall of the rotary drum 5 to form a sediment layer, the spiral blade 3 continuously pushes the deposited solid-phase materials 6 (namely sludge) to the conical end of the rotary drum and is discharged out of the machine through a slag discharge port, lighter clear liquid 7 forms an inner-layer liquid ring and continuously overflows from the rotary drum 5 through a clear liquid flow channel 4 by gravity and then through a large-end overflow port of the rotary drum 5 and is discharged out of the machine through a liquid discharge port (as shown in figure 3), in this way, when the spiral propeller operates at a high speed, the main stress is on the supporting rod 2, the spiral blade 3 is relatively small, so that the situation that the traditional welding part between the spiral blade 3 and the spiral core pipe, also can improve screw propeller's rotational speed, and then can make the filterable cleaner of thing liquid mixture, because the rotational speed improves, centrifugal force further strengthens, and the moisture content of solid-phase thing also can greatly reduced, is worth popularizing and applying.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a novel interior sky pushes away material screw propeller, includes spiral core pipe (1), characterized by: be fixed with a set of bracing piece (2) that distribute along spiral core pipe (1) center spiral on the outer profile face of spiral core pipe (1), the outside of spiral core pipe (1) is equipped with helical blade (3), helical blade (3) welded fastening is in each bracing piece (2) department, be provided with clear liquid flow channel (4) between the medial extremity of helical blade (3) and the outer profile face of spiral core pipe (1).

2. The novel internally-hollow pusher screw propeller as claimed in claim 1, wherein: the spiral core pipe (1) is provided with a group of threaded holes (1-1) which are matched with the support rods (2) respectively, the bottom of each support rod (2) is provided with a threaded section (2-1), the support rods (2) are matched with the threaded holes (1-1) through the threaded sections (2-1), and the connection parts of the support rods (2) and the spiral core pipe (1) are welded together.

3. The novel internally-hollow pusher screw propeller as claimed in claim 2, wherein: the support rod (2) comprises a first rod (2-2) and a second rod (2-3), the cross section of the second rod (2-3) is larger than that of the first rod (2-2), the helical blade (3) is supported at the top end of the second rod (2-3) and is fixedly welded at the first rod (2-2), and the threaded section (2-1) is located at the second rod (2-3).