Cylinder screen

Abstract

The drum screen comprises a screen drum, an inner cavity of the screen drum is a screening cavity, a feeding port and a discharging port are formed in the two ends of the screening cavity respectively, the screening cavity is provided with at least one screening area, a spiral piece is arranged on the inner wall, corresponding to the screening area, of the screening cavity, and a material lifting plate is arranged on the spiral piece. The arrangement direction of the material lifting plate is the same as the axial direction of the screen drum; screening holes are formed in the cylinder wall of the screening cavity. The spiral piece can convey the bottle bodies entering the screening cavity forwards, the small bottle bodies can be exposed out of the screening holes under the self-weight effect, the lifting plate can lift and beat the small bottle bodies which do not directly fall off to change the posture of the small bottle bodies so that the small bottle bodies can fall off smoothly, and the large bottle bodies can be discharged from the large bottle discharging port under the conveying effect of the spiral piece.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening equipment, especially plastic bottle screening, and specifically relates to a cylindrical screen. Background Technology

[0002] The plastic bottles in the packaged PET bottle bricks vary in size. After being loosened, larger bottles (such as oil jugs) and smaller beverage bottles need to be separated for the next process. The current method is to lay all the bottles on a sorting conveyor belt and manually sort them to remove large bottles and large debris. This method has several drawbacks: 1. It requires a large number of machines and occupies a lot of space; 2. It has a small processing capacity, low efficiency, and requires a lot of manpower; 3. It is unsafe for people to work next to the conveyor belt. Utility Model Content

[0003] This utility model provides a cylindrical screen that uses spiral blades to transport bottles and the screen holes are designed so that small bottles are screened out in advance under the action of gravity, while the largest bottles are discharged from the outlet.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A cylindrical sieve includes a sieve cylinder with an inner cavity serving as a screening chamber. The screening chamber has an inlet and an outlet at its two ends. The screening chamber has at least one screening zone, and the inner wall of the screening chamber corresponding to each zone is provided with spiral blades. Lifting plates are mounted on the spiral blades, with the lifting plates aligned with the axial direction of the sieve cylinder. The cylinder wall of the screening chamber has sieve holes. The spiral blades convey bottles entering the screening chamber forward. Small bottles, under their own weight, will protrude through the sieve holes. The lifting plates can lift and shake small bottles that do not fall directly, changing their posture and allowing them to fall smoothly. Larger bottles, conveyed by the spiral blades, exit from the large bottle outlet.

[0006] As a preferred embodiment of this utility model, a sealing ring is provided on the outer wall of the sieve cylinder corresponding to the screening area. The sealing ring separates the screening areas so that bottles of different sizes will not be mixed when they fall.

[0007] In a preferred embodiment of this invention, a support roller is installed at the feed inlet of the screen cylinder. The support roller has a feed hole that corresponds to the feed inlet. The support roller provides support for the rotation of the screen cylinder.

[0008] As a preferred embodiment of this utility model, a discharge cylinder is installed at the discharge port of the screen cylinder, and the discharge cylinder and the screen cylinder are connected by a sleeve.

[0009] As a preferred embodiment of this utility model, spiral blades are provided on the inner wall of the discharge cylinder.

[0010] This utility model's spiral blades can convey the bottles entering the screening chamber forward. Small bottles will be exposed through the screen holes under their own weight. The lifting plate can lift up the small bottles that do not fall directly and shake them to change their posture so that they fall smoothly. Large bottles come out from the large bottle outlet under the conveying action of the spiral blades and enter the subsequent collection hopper for collection, adapting to the reliable operation of large-scale processing lines under the new situation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example:

[0015] A cylindrical screen includes a screen cylinder 1, the inner cavity of which is a screening chamber. An inlet and an outlet are respectively provided at both ends of the screening chamber. A support roller 7 is installed at the inlet of the screen cylinder, and the support roller has a feed hole corresponding to the inlet. The support roller provides support for the rotation of the screen cylinder.

[0016] The screening chamber has at least one screening area. This embodiment uses one screening area as an example. The inner wall of the screening chamber corresponding to the screening area is provided with spiral blades 2. The spiral blades can be one piece or multiple spiral blades spliced ​​together, as long as they can convey the plastic bottles forward. The sieve cylinder can also be one piece or multiple cylinders spliced ​​together.

[0017] The spiral blade 2 is equipped with a lifting plate 3, the lifting plate being oriented in the same direction as the axial direction of the screen cylinder; the screen wall of the screening chamber is equipped with screen holes 5, the screen holes being oriented in the same direction as the spiral blade, and the size of the screen holes is related to the size of the bottles to be screened. The spiral blade can convey the bottles entering the screening chamber forward. Small bottles will be exposed through the screen holes under their own weight. The lifting plate can lift up small bottles that do not fall directly, shake them to change their posture and make them fall smoothly. Large bottles come out from the large bottle outlet under the conveying action of the spiral blade.

[0018] Furthermore, the outer wall of the sieve cylinder corresponding to the screening area is equipped with a sealing ring 6, which separates the screening areas so that bottles of different sizes will not be mixed when they fall.

[0019] To better separate the large bottles from the smaller bottles, a discharge cylinder 8 can be installed at the discharge port of the sieve cylinder to extend the conveying channel of the large bottles. The discharge cylinder 8 and the sieve cylinder are connected by a sleeve 9, and spiral blades are provided on the inner wall of the discharge cylinder to allow the large bottles to be discharged quickly.

[0020] Of course, the screening chamber can also be designed with at least two screening zones according to actual needs. The screening zones can share the same spiral blade or be set separately in sections. Each screening zone is separated by a sealing ring. Since the bottle sizes to be screened in the screening zones are different, the sieve holes are of different sizes.

[0021] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cylindrical sieve, comprising a sieve cylinder (1), the inner cavity of the sieve cylinder (1) being a screening chamber, and an inlet and an outlet respectively provided at both ends of the screening chamber, characterized in that: The screening chamber has at least one screening zone, and the inner wall of the screening chamber corresponding to the screening zone is provided with a spiral blade (2). The spiral blade (2) is provided with a lifting plate (3), and the lifting plate is set in the same direction as the axial direction of the screen cylinder. The cylinder wall of the screening chamber is provided with screen holes (5).

2. The cylindrical sieve according to claim 1, characterized in that: A sealing ring (6) is provided on the outer wall of the sieve cylinder corresponding to the screening area.

3. The cylindrical sieve according to claim 2, characterized in that: A support roller (7) is installed at the feed inlet of the screen cylinder. The support roller has a feed hole, which corresponds to the feed inlet.

4. The cylindrical sieve according to claim 3, characterized in that: A discharge cylinder (8) is installed at the discharge port of the screen cylinder, and the discharge cylinder (8) and the screen cylinder are connected by a sleeve (9).

5. The cylindrical sieve according to claim 4, characterized in that: Spiral blades are provided on the inner wall of the discharge cylinder.

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