A feeding device for cable sheath raw material

Abstract

The utility model discloses a feeding device for cable sheath raw materials, including a mixing tank and an anti-color difference tank, wherein a first stirring component is arranged in the anti-color difference tank, and a discharging component is arranged at the bottom thereof, the feeding end of the discharging component is communicated with the anti-color difference tank, and the discharging end thereof is communicated with the feeding end of the extruder, the mixing tank is arranged above one side of the anti-color difference tank, and has a portion extending into the anti-color difference tank, and a second stirring component is arranged in the mixing tank. The utility model is a feeding device for cable sheath raw materials, wherein the mixed raw materials are continuously stirred by the first stirring component before entering the extruder, thereby preventing the raw materials and the masterbatch from being mixed unevenly; the mixed raw materials are actively fed into the extruder by the discharging component, thereby preventing the raw materials and the masterbatch from being mixed unevenly during feeding, and then the raw materials and the masterbatch are allowed to enter the extruder for hot melting in a uniformly mixed state, thereby ensuring the color consistency after extrusion.

Description

Technical Field

[0001] The utility model relates to the technical field of cable processing, in particular to a feeding device for cable sheath raw materials. Background Art

[0002] Cables are usually rope-like cables made of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center. The entire outer layer is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside. Fireproof cable is a branch of the cable. Fireproof cable refers to a cable that can maintain safe operation for a certain period of time under the condition of flames. Fireproof cable is widely used in high-rise buildings, subways, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and firefighting lifesaving.

[0003] The sheath that protects the cable core is usually black, but according to the needs of different usage scenarios, the cable sheath also has other colors. Therefore, when the cable sheath is extruded and coated, a white sheath raw material is needed, and a masterbatch of the corresponding color is added to it. The sheath raw material particles and the masterbatch raw material particles need to be mixed by high-speed stirring, and then poured into the hopper of the extruder for hot melting and extrusion. The raw materials in the hopper enter the extruder by gravity, but the extruder consumes the raw materials slowly during extrusion. Because the size and density of the sheath raw material particles are different from the size and density of the masterbatch particles, this results in different rates of the sheath raw material particles or the masterbatch raw material particles entering the extruder or sinking in the hopper at different speeds, resulting in color difference in the cable sheath extruded by the extruder. Excessive color difference will affect the use of the cable, which in turn requires the sheath to be re-coated, reducing the efficiency of cable production and increasing the cost of cable production. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a feeding device for cable sheath raw materials.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a feeding device for cable sheath raw materials, comprising a mixing tank and an anti-color difference tank, wherein a first stirring component is arranged in the anti-color difference tank, and a discharging component is arranged at the bottom end thereof, a feeding end of the discharging component is communicated with the anti-color difference tank, and a discharging end thereof is communicated with a feeding end of an extruder, the mixing tank is arranged above one side of the anti-color difference tank, and has a portion extending into the anti-color difference tank, and a second stirring component is arranged in the mixing tank;

[0007] The top of the anti-color difference tank has an opening, and a support plate is provided at the opening; the first stirring component is provided on the support plate of the anti-color difference tank, and a stirring end thereof extends into the anti-color difference tank;

[0008] The first stirring assembly includes a first motor, a first shaft and a plurality of first stirring rods, the first shaft is vertically arranged at the bottom end of the support plate, and is rotatably connected to the support plate through a bearing, the plurality of first stirring rods are arranged at intervals on the outer periphery of the first shaft, the first motor is arranged at the top end of the support plate, and is transmission-connected to the first shaft;

[0009] The discharging assembly includes a third motor, a third shaft, a spiral stirring blade and a discharging pipe. The discharging pipe is arranged at the bottom end of the anti-color difference tank, and the outer circumference of the discharging pipe is connected with the discharging port of the anti-color difference tank through a connecting pipe. One end of the discharging pipe is connected with the feeding end of the extruder, and the other closed end thereof is installed with the third motor. The third shaft is arranged in the discharging pipe, and one end of the third shaft is rotatably connected with the closed end of the discharging pipe through a bearing, and is transmission-connected with the third motor. The spiral stirring blade is arranged on the outer circumference of the third shaft, and is adapted to the inner diameter of the discharging pipe.

[0010] As a preferred technical solution of the utility model, the second stirring assembly includes a second motor, a second shaft and a plurality of second stirring rods. The second shaft is vertically arranged in the mixing tank, and its two ends are rotatably connected to the mixing tank through bearings. The plurality of second stirring rods are arranged at intervals on the outer periphery of the second shaft. The second motor is arranged at the bottom end of the mixing tank and is transmission-connected to the second shaft.

[0011] As a preferred technical solution of the present invention, scrapers are provided at the ends of the first stirring rod and the second stirring rod.

[0012] As a preferred technical solution of the utility model, a feed pipe is provided at the bottom of the outer periphery of the mixing tank, which is connected with the mixing tank and extends obliquely into the anti-color difference tank, and a feed pipe is provided at the top of the outer periphery of the mixing tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The mixed raw materials are continuously stirred by the first stirring component before entering the extruder, thereby preventing the raw materials and the masterbatch from being mixed unevenly; the mixed raw materials are actively fed into the extruder by the discharging component, thereby preventing the raw materials and the masterbatch from being mixed unevenly during feeding, and then the raw materials and the masterbatch enter the extruder for hot melting in a uniformly mixed state, thereby ensuring the consistency of color after extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is one of the cross-sectional structural schematic diagrams of the utility model;

[0019] Figure 4 This is the second schematic diagram of the cross-sectional structure of the utility model;

[0020] In the figure: 1. anti-color difference tank; 2. mixing tank; 3. first stirring component; 31. first motor; 32. first shaft; 33. first stirring rod; 4. second stirring component; 41. second motor; 42. second shaft; 43. second stirring rod; 5. discharging component; 51. third motor; 52. third shaft; 53. spiral stirring blade; 54. discharging pipe; 6. scraper; 7. discharge pipe; 8. feeding pipe. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] In the drawings, the same reference numerals all refer to the same components.

[0023] like Figure 1-4 As shown, the utility model provides a feeding device for cable sheath raw materials, including a mixing tank 2 and an anti-color difference tank 1, the anti-color difference tank 1 is provided with a first stirring component 3, and a discharging component 5 is provided at the bottom thereof, the feeding end of the discharging component 5 is communicated with the anti-color difference tank 1, and the discharging end thereof is communicated with the feeding end of the extruder, the mixing tank 2 is arranged above one side of the anti-color difference tank 1, and has a portion extending into the anti-color difference tank 1, and a second stirring component 4 is provided in the mixing tank 2.

[0024] In this embodiment, the outer skin raw material particles and the masterbatch of the required color are placed in a mixing tank 2 in a suitable proportion, and the second stirring component 4 is started to stir the raw materials in the mixing tank 2 at a high speed, and then the mixed raw materials are sent to the anti-color difference tank 1, and the first stirring component 3 is started to continuously stir the raw materials in the anti-color difference tank 1 to prevent the outer skin particle raw material and the masterbatch from moving at different rates in the anti-color difference tank 1, resulting in uneven mixing, thereby causing uneven color of the outer skin extruded after entering the extruder.

[0025] Furthermore, the top of the anti-color difference tank 1 has an opening, and a support plate is provided at the opening. The first stirring component 3 is provided on the support plate of the anti-color difference tank 1 , and the stirring end thereof extends into the anti-color difference tank 1 .

[0026] In this embodiment, the support plate is used to install and support the first stirring assembly 3 .

[0027] Furthermore, the first stirring assembly 3 includes a first motor 31, a first shaft 32 and a plurality of first stirring rods 33. The first shaft 32 is vertically arranged at the bottom end of the support plate, and is rotatably connected to the support plate through a bearing. The plurality of first stirring rods 33 are arranged at intervals on the outer periphery of the first shaft 32. The first motor 31 is arranged at the top end of the support plate and is transmission-connected to the first shaft 32.

[0028] In this embodiment, the first motor 31 drives the first shaft 32 to rotate, and drives the multiple first stirring rods 33 to rotate in the anti-color difference tank 1, so as to stir the raw materials in the anti-color difference tank 1 to prevent the raw materials from being mixed unevenly in the anti-color difference tank 1 due to the different particle sizes, densities, etc. between the outer skin raw material particles and the masterbatch particles, resulting in different discharge rates (downward movement).

[0029] Furthermore, the discharge assembly 5 includes a third motor 51, a third shaft 52, a spiral stirring blade 53 and a discharge pipe 54. The discharge pipe 54 is arranged at the bottom end of the anti-color difference tank 1, and its outer periphery is connected with the discharge port of the anti-color difference tank 1 through a connecting pipe. One end of the discharge pipe 54 is connected with the feed end of the extruder, and the other closed end thereof is installed with the third motor 51. The third shaft 52 is arranged in the discharge pipe 54, and one end thereof is rotatably connected to the closed end of the discharge pipe 54 through a bearing, and is transmission-connected to the third motor 51. The spiral stirring blade 53 is arranged on the outer periphery of the third shaft 52, and is adapted to the inner diameter of the discharge pipe 54.

[0030] In this embodiment, the hopper of the conventional extruder adopts a passive feeding method, that is, the raw materials in the hopper enter the extruder by gravity, but the differences in particle size, density, etc. between the raw material particles and the masterbatch particles will lead to different discharge (downward movement) rates and uneven mixing. Therefore, an auger structure is formed by a third shaft 52, a spiral stirring blade 53 and a discharge pipe 54, and the third shaft 52 is rotated by a third motor 51, so that the mixed raw materials in the anti-color difference tank 1 are actively delivered to the extruder, thereby reducing the uneven mixing of the raw materials.

[0031] Furthermore, the second stirring assembly 4 includes a second motor 41, a second shaft 42 and a plurality of second stirring rods 43. The second shaft 42 is vertically arranged in the mixing tank 2, and its two ends are rotatably connected to the mixing tank 2 through bearings. The plurality of second stirring rods 43 are arranged at intervals on the outer periphery of the second shaft 42. The second motor 41 is arranged at the bottom end of the mixing tank 2 and is transmission-connected to the second shaft 42.

[0032] In this embodiment, the second motor 41 drives the plurality of stirring rods 43 on the second shaft 42 to mix and stir the outer shell raw material particles and the masterbatch particles in the mixing tank 2 .

[0033] Furthermore, scrapers 6 are provided at the ends of the first stirring rod 33 and the second stirring rod 43 .

[0034] In this embodiment, the first stirring rod 33 and the second stirring rod 43 can prevent the raw materials from adhering to the inner walls of the anti-color difference tank 1 and the mixing tank 2 through the scraper 6 when rotating.

[0035] Furthermore, a feed pipe 7 is provided at the bottom of the outer periphery of the mixing tank 2 and is connected to the mixing tank 2 and extends obliquely into the anti-color difference tank 1 , and a feed pipe 8 is provided at the top of the outer periphery of the mixing tank 2 .

[0036] In this embodiment, the feed pipe 7 is provided with a valve using existing technology. After the valve is opened, the mixed and stirred raw materials enter the anti-color difference tank 1 from the mixing tank 2 along the feed pipe 7, and the raw materials are added to the mixing tank 2 through the feeding pipe 8.

[0037] The utility model relates to a feeding device for cable sheath raw materials. The mixed raw materials are continuously stirred by a first stirring component before entering an extruder, thereby preventing the raw materials and the masterbatch from being mixed unevenly. The mixed raw materials are actively fed into the extruder by a discharging component, thereby preventing the raw materials and the masterbatch from being mixed unevenly during feeding, and then the raw materials and the masterbatch are allowed to enter the extruder for hot melting in a uniformly mixed state, thereby ensuring the consistency of color after extrusion.

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding device for cable sheath raw materials, characterized in that: The invention comprises a mixing tank (2) and an anti-color difference tank (1), wherein the anti-color difference tank (1) is provided with a first stirring component (3), and a discharge component (5) is provided at the bottom thereof, the feed end of the discharge component (5) is communicated with the inside of the anti-color difference tank (1), and the discharge end is communicated with the feed end of an extruder, the mixing tank (2) is arranged above one side of the anti-color difference tank (1) and has a portion extending into the anti-color difference tank (1), and a second stirring component (4) is provided in the mixing tank (2); The top of the anti-color difference tank (1) has an opening, and a support plate is provided at the opening; the first stirring component (3) is provided on the support plate of the anti-color difference tank (1), and the stirring end thereof extends into the anti-color difference tank (1); The first stirring assembly (3) comprises a first motor (31), a first shaft (32) and a plurality of first stirring rods (33); the first shaft (32) is vertically arranged at the bottom end of the support plate and is rotatably connected to the support plate via a bearing; the plurality of first stirring rods (33) are arranged at intervals on the outer periphery of the first shaft (32); the first motor (31) is arranged at the top end of the support plate and is transmission-connected to the first shaft (32); The discharge assembly (5) comprises a third motor (51), a third shaft (52), a spiral stirring blade (53) and a discharge pipe (54); the discharge pipe (54) is arranged at the bottom end of the anti-color difference tank (1), and its outer circumference is connected to the discharge port of the anti-color difference tank (1) through a connecting pipe; one end of the discharge pipe (54) is connected to the feed end of the extruder, and the other closed end is installed with the third motor (51); the third shaft (52) is arranged in the discharge pipe (54), and one end of the third shaft is rotatably connected to the closed end of the discharge pipe (54) through a bearing, and is transmission-connected to the third motor (51); the spiral stirring blade (53) is arranged on the outer circumference of the third shaft (52), and is adapted to the inner diameter of the discharge pipe (54).

2. A feeding device for cable sheath raw materials according to claim 1, characterized in that: The second stirring assembly (4) comprises a second motor (41), a second shaft (42) and a plurality of second stirring rods (43); the second shaft (42) is vertically arranged in the mixing tank (2), and its two ends are rotatably connected to the mixing tank (2) via bearings; the plurality of second stirring rods (43) are arranged at intervals on the outer circumference of the second shaft (42); the second motor (41) is arranged at the bottom end of the mixing tank (2) and is transmission-connected to the second shaft (42).

3. A feeding device for cable sheath raw materials according to claim 2, characterized in that: Scrapers (6) are provided at the ends of the first stirring rod (33) and the second stirring rod (43).

4. A feeding device for cable sheath raw materials according to claim 3, characterized in that: A feed pipe (7) is provided at the bottom of the outer periphery of the mixing tank (2) and is connected to the mixing tank (2) and extends obliquely into the anti-color difference tank (1). A feed pipe (8) is provided at the top of the outer periphery of the mixing tank (2).

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