CN212006676U - Screw rod transmission device of double-point support type expansion dryer - Google Patents
Screw rod transmission device of double-point support type expansion dryer Download PDFInfo
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- CN212006676U CN212006676U CN202020312771.5U CN202020312771U CN212006676U CN 212006676 U CN212006676 U CN 212006676U CN 202020312771 U CN202020312771 U CN 202020312771U CN 212006676 U CN212006676 U CN 212006676U
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- circular ring
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Abstract
The invention discloses a screw rod transmission device of a double-point support type expansion dryer, which is applied to an expansion dryer and comprises a straight machine barrel fixed on a base, wherein a screw rod is embedded in the straight machine barrel, the front end of the screw rod is screwed into a short transition shaft, the tail end of the screw rod is connected with a motor, and the motor is fixed on the base; the device also comprises a support ring arranged between the inner wall of the straight machine barrel and the outer wall of the transition short shaft; the support ring comprises an inner circular ring and an outer circular ring which are concentric, and the inner circular ring is in supporting connection with the outer circular ring through a connecting plate; the transition short shaft is rotatably sleeved on the inner surface of the inner circular ring, and the outer surface of the outer circular ring is tightly attached to and fixed on the inner wall of the straight machine barrel.
Description
Technical Field
The invention relates to a screw conveying device, in particular to a screw conveying device of a double-point support type expansion dryer.
Background
The screw rod of expansion drying machine in the existing market is cantilever type structure, and screw rod and straight unilateral clearance of barrel are less than or equal to 1.5mm, even under the condition that the material is full of in the course of the work, the screw rod also very easily produces the friction with straight barrel inner wall. In order to prolong the service life of the screw and the straight machine barrel, the method adopted by the prior art is to change the screw into a split structure, the screw sleeve is arranged on the screw mandrel, and the screw sleeve can be independently replaced after being worn. The inner wall of the straight machine barrel is changed into a replaceable lining, and the replaceable lining can be independently replaced after being worn. Meanwhile, hard alloy is overlaid on the easily contacted part of the screw sleeve and the bushing. However, even in this way, the service life of the thread insert and the bush is only 6 months to 12 months, which virtually increases the production cost greatly.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a screw rod transmission device of a double-point support type expansion dryer, based on the situation of the background technology, the cantilever type structure of a screw rod is fundamentally changed, the idea of material discharge is not influenced by increasing the support at the front end of the expansion dryer, and an anti-abrasion type pressurization support ring structure is added at the front end of the screw rod.
In order to achieve the purpose, the invention adopts the following technical scheme:
a screw rod transmission device of a double-point support type expansion dryer comprises a straight machine barrel fixed on a base, wherein a screw rod is embedded in the straight machine barrel, a transition short shaft is screwed in the front end of the screw rod, the tail end of the screw rod is connected with a motor, and the motor is fixed on the base;
the device also comprises a support ring arranged between the inner wall of the straight machine barrel and the outer wall of the transition short shaft; the support ring comprises an inner circular ring and an outer circular ring which are concentric, and the inner circular ring is in supporting connection with the outer circular ring through a connecting plate; the transition short shaft is rotatably sleeved on the inner surface of the inner circular ring, and the outer surface of the outer circular ring is tightly attached to and fixed on the inner wall of the straight machine barrel.
The outer ring and the side wall of the straight machine barrel are provided with corresponding through bolt holes, and a bolt is screwed into the bolt holes from the outer wall of the straight machine barrel to fix the outer ring on the straight machine barrel.
And a wear-resistant shaft sleeve is arranged between the inner circular ring and the transition short shaft.
The connecting plate is perpendicular to the outer surface of the inner ring and the inner surface of the outer ring.
The connecting plates are four, and the included angle formed by two adjacent connecting plates relative to the circle center of the inner circular ring is 90 degrees.
The double-point support type screw rod has the advantages that the tail end of the screw rod is connected to the motor support, the front end of the screw rod is connected to the short transition shaft and further supported by the support ring, so that the screw rod is supported by double points and can run more stably, and the problem of contact friction between the screw rod and the inner wall of the straight cylinder possibly generated in a single-point support mode in the prior art is solved. The support ring reduces the area through which the material passes, and therefore, the pressurization effect can also be achieved. In addition, the main parts of the invention, such as the transition short shaft, the support ring, the wear-resistant shaft sleeve and the like, for realizing double support also have the following advantages: the screw rod and the straight machine barrel have the advantages of being simple, light, reliable, low in manufacturing cost, replaceable, low in later maintenance cost and the like, and the service lives of the screw rod and the straight machine barrel are prolonged.
Drawings
FIG. 1 is an axial cross-sectional view of the device of the present invention;
FIG. 2 is a side view of a support ring of the device of the present invention;
fig. 3 is a sectional view B-B of fig. 2.
In the figure, 1, a screw rod, 2, a straight machine barrel, 3, an outer circular ring, 4, an inner circular ring, 5, a transition short shaft, 6, a connecting plate, 7, bolt holes, 8 and bolts.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to fig. 3, the screw transmission device of the double-point support type expansion dryer of the present invention comprises a straight cylinder 2 fixed on a base, a screw 1 is embedded in the straight cylinder 2, a transition short shaft 5 is screwed into the front end of the screw 1, the tail end of the screw 1 is connected to a motor, and the motor is fixed on the base;
the device also comprises a support ring arranged between the inner wall of the straight machine barrel 2 and the outer wall of the transition short shaft 5; the support ring comprises an inner ring 4 and an outer ring 3 which are concentric, and the inner ring 4 and the outer ring 3 are supported and connected through a connecting plate 6; the transition short shaft 5 is rotatably sleeved on the inner surface of the inner circular ring 4, and the outer surface of the outer circular ring 3 is tightly attached and fixed on the inner wall of the straight machine barrel 2.
The outer ring 3 and the side wall of the straight machine barrel 2 are respectively provided with a corresponding through bolt hole 7, and a bolt 8 is screwed into the bolt hole 7 from the outer wall of the straight machine barrel 2 to fix the outer ring 3 on the straight machine barrel 2.
A wear-resistant shaft sleeve is arranged between the inner circular ring 4 and the transition short shaft 5.
The connecting plate 6 is perpendicular to the outer surface of the inner ring 4 and the inner surface of the outer ring 3.
Four connecting plates 6 are arranged, and the included angle formed by two adjacent connecting plates 6 relative to the circle center of the inner ring 4 is 90 degrees.
When the screw conveyor is used, the screw 1 can be started to rotate by starting the motor, so that the screw can transport materials in the straight machine barrel 2. Because the tail end of the screw rod 1 is connected with the motor support, the front end of the screw rod 1 is connected with the transition short shaft 5 (the inner surface of the transition short shaft 5 is provided with threads, and the transition short shaft 5 is screwed into the threads at the front end of the screw rod 1 through the threads), and then the screw rod 1 is supported by the support ring, so that the screw rod 1 is supported by double points and can run more stably, and the problem of the contact friction between the screw rod 1 and the inner wall of the straight machine barrel 2, which is possibly generated in a single-. The support ring reduces the area through which the material passes, and therefore, the pressurization effect can also be achieved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (5)
1. The screw conveying device of the double-point support type expansion dryer is characterized by comprising a straight machine barrel (2) fixed on a base, wherein a screw (1) is embedded into the straight machine barrel (2), a transition short shaft (5) is screwed into the front end of the screw (1), the tail end of the screw (1) is connected with a motor, and the motor is fixed on the base;
the device also comprises a support ring arranged between the inner wall of the straight machine barrel (2) and the outer wall of the transition short shaft (5); the support ring comprises an inner circular ring (4) and an outer circular ring (3) which are concentric, and the inner circular ring (4) is in supporting connection with the outer circular ring (3) through a connecting plate (6); the transition short shaft (5) is rotatably sleeved on the inner surface of the inner circular ring (4), and the outer surface of the outer circular ring (3) is tightly attached and fixed on the inner wall of the straight machine barrel (2).
2. Screw conveying device of double-point support type expansion dryer according to claim 1, characterized in that the outer ring (3) and the straight barrel (2) are provided with corresponding through bolt holes (7), and a bolt (8) is screwed into the bolt holes (7) from the outer wall of the straight barrel (2) to fix the outer ring (3) to the straight barrel (2).
3. Screw conveyor of double-point support expansion dryer according to claim 1, characterized in that between the inner ring (4) and the short transition shaft (5) is arranged a wear bushing.
4. Screw conveyor of double-point support expansion dryer according to claim 1, characterized by that, the connection plate (6) is perpendicular to the outer surface of the inner ring (4) and the inner surface of the outer ring (3).
5. Screw conveying device of double-point support type expansion dryer according to claim 1, characterized in that the connecting plates (6) are provided with four, and the included angles formed by two adjacent connecting plates (6) relative to the center of the inner ring (4) are both 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312771.5U CN212006676U (en) | 2020-03-13 | 2020-03-13 | Screw rod transmission device of double-point support type expansion dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312771.5U CN212006676U (en) | 2020-03-13 | 2020-03-13 | Screw rod transmission device of double-point support type expansion dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212006676U true CN212006676U (en) | 2020-11-24 |
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ID=73433544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020312771.5U Active CN212006676U (en) | 2020-03-13 | 2020-03-13 | Screw rod transmission device of double-point support type expansion dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212006676U (en) |
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2020
- 2020-03-13 CN CN202020312771.5U patent/CN212006676U/en active Active
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