Same-direction three-screw assembly

Abstract

The utility model discloses a homodromous three-screw assembly. The problems that an existing screw assembly is short in service life and cannot meet the banburying requirement of conductive carbon black master batches are mainly solved. The gearbox is characterized in that the gearbox comprises a side plate (21), the side plate is provided with a shaft hole (22) used for rotatably installing a screw rod, a main oil duct (23) and a branch oil duct (24) which are communicated with each other are arranged in the side plate, the main oil duct is provided with a valve (25) and is communicated with an oil pump, and the branch oil duct is communicated with the shaft hole. The equidirectional three-screw assembly provided by the utility model can be lubricated, and can meet the use requirements and prolong the service life when the conductive carbon black master batch is internally mixed.

Description

Technical Field

[0001] The utility model relates to the field of screw extruders, in particular to a co-rotating three-screw assembly. Background Art

[0002] Conductive carbon black masterbatch needs to be mixed during use, usually through a screw machine. Traditional screw machines generally have multiple screws, which transmit power to each other through gears. However, due to the lack of a structure for replenishing lubricating oil, the use effect and life are affected. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a co-rotating three-screw assembly, which mainly solves the problem that the existing screw assembly has a short service life and cannot meet the mixing requirements of conductive carbon black masterbatch.

[0004] The technical solution of the present utility model is a co-rotating three-screw assembly, comprising a gear box connected to a power source and three screws, the gear box being connected to the screws, the gear box comprising a side plate, the side plate being provided with an axial hole for rotatable installation of the screws, a main oil passage and a branch oil passage being connected to each other in the side plate, a valve being installed on the main oil passage and being connected to an oil pump, and the branch oil passage being connected to the axial hole.

[0005] The valve is a solenoid valve.

[0006] The screw includes a rod body and a spiral ridge provided on the rod body, the ridge includes a feeding section and a discharging section, the ridge also includes a mixing section, and the front end surface of the mixing section is provided with a chip groove based on the material forward direction; the mixing section is provided after the mixing section and is provided with a through groove provided therethrough.

[0007] The three screws are arranged in parallel.

[0008] The edge of the chip groove is provided with a cutting edge for extruding and cutting materials.

[0009] An electric control box is installed on the outer wall of the gear box.

[0010] The beneficial effects of the utility model are as follows: the utility model provides a co-rotating three-screw assembly, which can be lubricated, can meet the use requirements during the internal mixing of conductive carbon black masterbatch, and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0012] Figure 2 It is a partial schematic diagram of an embodiment of the utility model.

[0013] Figure 3This is a schematic diagram of a screw according to an embodiment of the present invention.

[0014] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle. DETAILED DESCRIPTION

[0015] The present invention is further described below with reference to the accompanying drawings: As shown in the figure, a co-rotating three-screw assembly includes a gearbox 2 connected to a power source and three screws 1. The gearbox is connected to the screws and includes a side plate 21. The side plate is provided with an axial hole 22 for rotatably mounting the screws. The side plate is provided with a main oil passage 23 and a branch oil passage 24 connected to each other. The main oil passage is provided with a valve 25 and is connected to the oil pump. The branch oil passage is connected to the axial hole. The gear transmission structure can adopt the structure of publication number CN114290642A. The solenoid valve can be opened in a quantitative manner to supply oil. It can be controlled by a circuit board installed in the line control box to increase lubrication. The oil pump is connected to the oil box for oil supply.

[0016] In this embodiment, as shown in the figure, the valve is a solenoid valve.

[0017] In this embodiment, as shown in the figure, the screw comprises a body and spiral ridges provided on the body. The ridges include a feed section and a discharge section 34. The ridges also include a mixing section 35, with a cutting groove 351 provided on its front end face, which is aligned with the material's forward direction. A mixing section 36 is located behind the mixing section and has a through groove 361 extending therethrough. The cutting grooves simultaneously cut the material during rotation, dispersing the material into chunks. Adding through grooves to the mixing section facilitates material passage and increases extrusion efficiency.

[0018] In this embodiment, as shown in the figure, the three screws are arranged in parallel.

[0019] In this embodiment, as shown in the figure, the edge of the chip groove is provided with a cutting edge 352 for squeezing and cutting materials. The materials are cut at the same time during rotation, and the materials are dispersed into blocks.

[0020] In this embodiment, as shown in the figure, an electric control box 5 is installed on the outer wall of the gear box. A circuit board is provided in the electric control box, and the circuit board is used to control the opening and closing of the solenoid valve.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0023] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be construed as limiting the present invention, but any improvements based on the spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A co-rotating three-screw assembly comprising a gearbox (2) connected to a power source and three screws (1), wherein the gearbox is connected to the screws, and characterized in that: The gearbox comprises a side plate (21), the side plate being provided with an axial hole (22) for rotatably mounting a screw, the side plate being provided with a main oil passage (23) and a branch oil passage (24) being connected to each other, the main oil passage being provided with a valve (25) and being connected to an oil pump, and the branch oil passage being connected to the axial hole.

2. The co-rotating three-screw assembly according to claim 1, characterized in that: The valve is a solenoid valve.

3. The co-rotating three-screw assembly according to claim 1, characterized in that: The screw comprises a rod body and a spiral ridge provided on the rod body, wherein the ridge comprises a feed section and a discharge section (34), and the ridge further comprises A mixing section (35), wherein a chip groove (351) is provided on a front end surface of the mixing section based on the material forward direction; The mixing section (36) is provided after the mixing section and is provided with a through groove (361) extending therethrough.

4. The co-rotating three-screw assembly according to claim 1, characterized in that: The three screws are arranged in parallel.

5. The co-rotating three-screw assembly according to claim 3, characterized in that: The edge of the chip groove is provided with a cutting edge (352) for extruding and cutting materials.

6. The co-rotating three-screw assembly according to claim 1, characterized in that: An electric control box (5) is installed on the outer wall of the gear box.

Images