Vertical screw blade of extruder feed opening

Abstract

The utility model belongs to the technical field of extruders, and relates to a vertical screw blade of a feed opening of an extruder, which comprises a rotating shaft and a blade (1) spirally connected along the axis direction, notches (2) are arranged on the blade, two notches are arranged in a complete lead of a spiral, and the two notches are distributed at an angle of 180 degrees; and the width of the gap close to the rotating shaft is smaller than that of the gap far away from the rotating shaft. According to the utility model, the feed port of the machine barrel can be prevented from being blocked by accumulated materials, so that the blanking is smooth.

Description

Technical Field

[0001] The utility model belongs to the technical field of extruders, in particular to a vertical screw blade of an extruder discharge port. Background Art

[0002] The sheet production process requires the use of an extruder. The vertical screw is the forced feed screw above the extruder's discharge port. The vertical screw conveys the main material and crushed material through blades. If material accumulates and gets stuck on the blades during the feeding process, neither the main material nor the crushed material can continue to be discharged, causing the extruder to lose pressure and shut down.

[0003] The source of raw materials for the extruder is through the vertical and horizontal feeding device, which feeds the main material and crushed material into the vertical screw barrel, and then forces the material into the feeding port of the extruder through the vertical screw blades. Figure 1 As shown, since the outer diameter of the screw blades is relatively close to the inner diameter of the barrel, when material accumulates and gets stuck between the blades, the barrel feed port will be blocked by the accumulated material, seriously affecting material discharge. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a vertical screw blade for an extruder discharge port, which can prevent the barrel feed port from being blocked by accumulated materials, so that the discharge of materials is smooth.

[0005] The utility model embodiment is achieved as follows:

[0006] A vertical screw blade for an extruder discharge port includes a rotating shaft and blades spirally connected in the axial direction. Notches are provided on the blades, wherein two notches are provided within a complete spiral lead, and the two notches are distributed at 180 degrees; wherein the width of the notch near the rotating shaft is smaller than the width of the notch away from the rotating shaft.

[0007] The blade has at least two complete leads, and correspondingly has at least four notches.

[0008] Among them, two additional gaps are opened in a complete lead of the spiral, and the two additional gaps are distributed at 180°.

[0009] The two additional notches and the two notches together form a total of four notches, which are evenly distributed around the circumference of the spiral at intervals of 90 degrees.

[0010] The present invention provides two notches within a continuous screw blade within a complete lead, with the two notches spaced 180 degrees apart. This prevents material from accumulating in front of the blades, hindering unloading. By creating notches in the blades perpendicular to the screw, material that accumulates on the blades will slide through the notches once it reaches a certain level, thus preventing the material from blocking the feed port. Furthermore, the width of the notches near the shaft is smaller than that away from the shaft, which facilitates unloading and significantly reduces the probability of blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a two-view structural diagram of the vertical screw blade of the extruder discharge port in the prior art;

[0012] Figure 2 It is a structural diagram of the vertical screw blades at the discharge port of the extruder of the utility model from two perspectives. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0014] The following describes the specific implementation of the present invention in detail with reference to specific embodiments:

[0015] like Figure 2 As shown, a vertical screw blade at the discharge port of an extruder includes a rotating shaft and a blade 1 spirally connected in the axial direction, and a notch 2 is opened on the blade, wherein two notches are opened in a complete spiral lead, and the two notches are distributed at 180°; wherein the width of the notch near the rotating shaft is smaller than the width of the notch away from the rotating shaft.

[0016] The blade has at least two complete leads, and correspondingly has at least four notches.

[0017] Among them, two additional gaps are opened in a complete lead of the spiral, and the two additional gaps are distributed at 180°.

[0018] The two additional notches and the two notches together make a total of four notches, which are evenly distributed around the circumference of the spiral at 90-degree intervals. Thus, four notches are provided within a complete lead, evenly distributed to ensure the balance of the blade during rotation. The more notches, the lower the probability of clogging. However, too many notches or too small notches will have little effect. Therefore, under normal circumstances, four notches within a complete lead basically meet production requirements.

[0019] The present invention provides two notches within a continuous screw blade within a complete lead, with the two notches spaced 180 degrees apart. This prevents material from accumulating in front of the blades, hindering unloading. By creating notches in the blades perpendicular to the screw, material that accumulates on the blades will slide through the notches once it reaches a certain level, thus preventing the material from blocking the feed port. Furthermore, the width of the notches near the shaft is smaller than that away from the shaft, which facilitates unloading and significantly reduces the probability of blockage.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical screw blade for an extruder discharge port, comprising a rotating shaft and blades spirally connected in the axial direction, characterized in that: Notches are provided on the blades, wherein two notches are provided in a complete spiral lead and the two notches are distributed at 180 degrees; wherein the width of the notch near the rotating shaft is smaller than the width of the notch away from the rotating shaft.

2. The vertical screw blade of the extruder discharge port according to claim 1, characterized in that: The blade has at least two complete leads and is correspondingly provided with at least four notches.

3. The vertical screw blade of the extruder discharge port according to claim 1, characterized in that: Two additional notches are provided within a complete helical lead, and the two additional notches are distributed at 180°.

4. The vertical screw blade of the extruder discharge port according to claim 3, characterized in that: The two additional notches and the two notches together form a total of four notches, which are evenly distributed around the circumference of the spiral at intervals of 90 degrees.

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