CN204222123U - A kind of feeding mechanism of extruder - Google Patents

Abstract

The utility model relates to the technical field of extruders, in particular to a feeding mechanism of an extruder capable of feeding various materials, including a drive speed regulating motor (1), a reducer (2), and a mixing drum (6). , unloading cylinder (7) and conveying screw rod (8), described reducer (2) is connected to the input end of described driving speed-regulating motor (1), and described conveying screw rod (8) is connected to described reducer ( 2), and the conveying screw (8) is installed in the discharge cylinder (7), the mixing cylinder (3) communicates with the discharge cylinder (7), and the discharge cylinder ( 7) A discharge port (72) is provided, and the pitch of the conveying screw (8) gradually increases along the direction of the discharge port (72). The utility model benefits from: no clogging phenomenon, evenly added materials, no agglomeration phenomenon on the inner wall of the silo, high efficiency and reliable operation, and is especially suitable for the feeding mechanism of an extruder with a large powder content.

Description

Feeding mechanism of an extruder

technical field

The utility model relates to the technical field of extruders, in particular to a feeding mechanism that can adapt to the feeding of various materials.

Background technique

The feeding mechanism of the extruder , as one of the mechanisms in the process of producing plastic granules in the plastic extruder, has many ways to add materials to the extruder, such as: vibration feeding, disc feeding, gravity quantitative feeding Materials, screw feeding, etc. In the process of plastic modification, a variety of raw materials are required, such as fine powder with small specific gravity, fine powder with the size of sand grains, large particles, and metal powder with large specific gravity. This method of feeding has limitations, which will cause uneven feeding of the extruder, unequal speed, uneven dispersion of materials, and even agglomeration of raw materials without feeding, resulting in unstable performance and quality fluctuations. To solve the problem of uniform feeding, the size and specific gravity of the mixed materials are different, coupled with the limitations of equipment space and device cost, the above feeding methods can only deal with a single problem, and cannot be solved together during production.

As shown in Figure 1, the feeding mechanism of traditional extruder comprises driving speed-regulating motor 102, speed reducer 104, mixing drum 101, unloading drum 108 and conveying screw rod 107, and described speed reducing device 104 is connected with described driving regulator The input end of the speed motor 102, the transmission screw 107 is connected to the input end of the reducer 104, and the transmission screw 108 is installed in the discharge cylinder 107, the mixing cylinder 103 and the discharge cylinder 107 connected, characterized in that: the discharge barrel 108 is provided with a discharge port 1082, and the pitch of the conveying screw 107 is a constant P. The feeding area of the rectangular mixing barrel 109 is only located behind the conveying screw 107, and a part of the area is a dead zone for powder flow, which will lead to poor flow ability of the powder at the hopper, and some powder will accumulate here for a long time, so It causes extrusion bonding and arching, so that the materials cannot be uniformly mixed and conveyed, and it is difficult to guarantee the quality of the materials and cause waste.

Utility model content

The purpose of the utility model is to provide a feeding mechanism of an extruder in view of the deficiencies in the prior art, the feeding mechanism does not have clogging, the material is added evenly, and there is no agglomeration on the inner wall of the silo. It has high efficiency and reliable operation, and most importantly, it is suitable for feeding materials with a large powder content.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a feeding mechanism of an extruder, including a drive speed regulating motor, a reducer, a mixing drum, a discharge drum and a conveying screw, and the reducer is connected to the The input end of the drive speed regulating motor, the transmission screw is connected to the input end of the reducer, and the transmission screw is installed in the discharge barrel, the mixing drum and the discharge barrel are connected, so The discharge barrel is provided with a discharge port, and the pitch of the conveying screw gradually increases along the direction of the discharge port.

The pitch of the conveying screw gradually increases along the direction of the discharge port in an arrangement of arithmetic progressions.

The mixing drum includes a conical mixing drum and a square mixing drum, the conical mixing drum communicates with the square mixing drum, and the conical mixing drum is located above the square mixing drum.

The conical mixing drum includes a driving motor, a stirring paddle and a mixing drum body, the driving motor is arranged on the top of the mixing drum body, one end of the stirring paddle is connected to the output end of the driving motor, and the stirring The other end of the paddle is provided with a blade.

The included angle between the blade and the horizontal plane is 15-30 degrees.

The included angle between the blade and the horizontal plane is 20 degrees.

The utility model also includes a Z-type agitator, the Z-type agitator includes a transmission and a Z-type agitation paddle, the input end of the Z-type agitation paddle is connected to the output end of the transmission device, and the Z-type agitation paddle The output end of the paddle is located in the square mixing drum.

The Z-shaped impeller includes a paddle shaft and several paddles arranged on the paddle shaft, and the several paddles are distributed on the paddle shaft in a "Z" shape.

The beneficial effects of the utility model are: the utility model includes a drive speed regulating motor, a reducer, a mixing drum, a discharge cylinder and a transmission screw, the reducer is connected to the input end of the drive speed regulation motor, and the transmission screw is connected to the input end of the reducer , and the conveying screw is installed in the discharge barrel, the mixing barrel and the discharge barrel are connected, the discharge barrel is provided with a discharge port, and the pitch of the conveying screw gradually increases along the direction of the discharge port. The mechanism of the utility model is novel, sturdy and durable, there is no clogging phenomenon, the material is added evenly, no caking phenomenon occurs on the inner wall of the silo, the operation effect is remarkable, the efficiency is high, and the operation is reliable. It is especially suitable for feeding materials with a large powder content. Material use.

Description of drawings

Fig. 1 is a schematic structural diagram of the prior art.

Among them, 101-mixing drum, 102-drive speed regulating motor, 104-reducer, 107-transport screw, 108-discharging cylinder, 1082-discharging port, 109-rectangular mixing tank.

Fig. 2 is a structural schematic diagram of the utility model.

Among them, 1-drive speed regulating motor, 2-reducer, 3-Z type agitator, 4-square mixing drum, 5-conical mixing drum, 6-mixing drum, 7-discharging drum, 8-transport screw, 31-driver, 32-Z type stirring paddle, 51-drive motor, 52-stirring paddle, 53-blade, 54-mixing drum body, 72-discharging port, 321-paddle shaft, 322-paddle.

detailed description

Below in conjunction with the accompanying drawings the utility model is further described, as shown in Figure 2, the utility model comprises a drive speed regulating motor 1, a speed reducer 2, a mixing drum 6, a discharge cylinder 7 and a transmission screw 8, and the speed reducer 2 is connected to Drive the input end of the speed regulating motor 1, the transmission screw 8 is connected to the input end of the reducer 2, and the transmission screw 8 is installed in the discharge cylinder 7, the mixing cylinder 3 and the discharge cylinder 7 are connected, and the discharge cylinder 7 is set There is a discharge port 72, and the pitch of the conveying screw 8 increases gradually along the direction of the discharge port 72.

Preferably, the pitch of the conveying screw 8 gradually increases along the direction of the discharge port 72 in an arrangement of arithmetic progressions. In this way, the flow of the hopper funnel can be changed to the overall flow, and the uniformly mixed material is conveyed and unloaded by the screw, and then enters the extruder, which is mainly processed for uniform conveying, and at the same time, the material does not cause extrusion, bonding and lapping in the upper square mixing drum 4. Arch phenomenon to prevent material supply from stopping.

Preferably, the mixing drum 6 includes a conical mixing drum 5 and a square mixing drum 4 , the conical mixing drum 5 communicates with the square mixing drum 4 , and the conical mixing drum 5 is located above the square mixing drum 4 . Multi-stage mixing and conveying prevents materials from arching and agglomerating, or even stops feeding.

Preferably, the conical mixing drum 5 includes a driving motor 51, a stirring paddle 52 and a mixing drum body 54, the driving motor 51 is arranged on the top of the mixing drum body 54, and one end of the stirring paddle 52 is connected to the output end of the driving motor 51, and the stirring paddle The other end of 52 is provided with blade 53 .

Preferably, the angle between the blade 53 and the horizontal plane is 15 to 30 degrees, and the angle between the blade 53 and the horizontal plane designed in the present invention is 20 degrees. The setting range of the pushing angle determines the technical parameters of uniform material mixing quality.

Preferably, it also includes Z-type agitator 3, Z-type agitator 3 transmission 31 and Z-type stirring paddle 32, the input end of Z-type stirring paddle 32 is connected to the output end of transmission 31, the output of Z-type stirring paddle 32 The end is located in the square mixing drum 4.

Preferably, the Z-shaped paddle 32 includes a paddle shaft 321 and several paddle pieces 322 arranged on the paddle shaft 321 , and the several paddle pieces 322 are distributed on the paddle shaft 321 in a “Z” shape. It plays a role in guiding the material to flow vertically downward in the material flow direction.

The working process of the utility model is as follows: 1. Turn on the machine, start and drive the speed regulating motor 1 and the agitator drive motor 51 through the start key on the control cabinet; , it plays the role of no-load protection) Add materials into the conical mixing drum 5, at this time, the materials move downward under the agitation of the blades 53 of the conical mixing drum 5, and flow into the square mixing drum 4, the square mixing drum The output end of the Z-shaped agitator 3 in 4 rotates under the drive of the transmission, so that the material flowing down from the conical mixing drum 5 flows down to the discharge drum 7 under the vertical force of the Z-shaped agitator 3 Inside, under the promotion of the drive screw 8, the material is output from the discharge port 72. During this process, the material can be conveyed evenly, and there will be no phenomenon of material arching and agglomeration, or even stop feeding.

Of course, the above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application are included in the utility model patent application within range.

Claims (8)

1. the feeding mechanism of an extruder, comprise and drive buncher (1), decelerator (2), mixing drum (6), discharge tube (7) and conveyor screw (8), described decelerator (2) is connected to the input of described driving buncher (1), described conveyor screw (8) is connected to the input of described decelerator (2), and described conveyor screw (8) is installed in described discharge tube (7), described mixing drum (3) is communicated with described discharge tube (7), it is characterized in that: described discharge tube (7) is provided with discharge port (72), the pitch of described conveyor screw (8) increases gradually along the direction of described discharge port (72).

2. the feeding mechanism of extruder according to claim 1, is characterized in that: the pitch of described conveyor screw (8) increases along the direction of described discharge port (72) gradually with the arrangement mode of arithmetic progression.

3. the feeding mechanism of extruder according to claim 1, it is characterized in that: described mixing drum (6) comprises taper mixing drum (5) and square mixing drum (4), described taper mixing drum (5) is communicated with described square mixing drum (4), and described taper mixing drum (5) is positioned at the top of described square mixing drum (4).

4. the feeding mechanism of extruder according to claim 3, it is characterized in that: described taper mixing drum (5) comprises drive motors (51), paddle (52) and mixing drum body (54), described drive motors (51) is arranged at the top of described mixing drum body (54), one end of described paddle (52) is connected to the output of described drive motors (51), and the other end of described paddle (52) is provided with blade (53).

5. the feeding mechanism of extruder according to claim 4, is characterized in that: described blade (53) is 15 ~ 30 degree with the angle of horizontal plane.

6. the feeding mechanism of extruder according to claim 5, is characterized in that: described blade (53) is 20 degree with the angle of horizontal plane.

7. the feeding mechanism of extruder according to claim 3, it is characterized in that: also comprise Z-type agitator (3), described Z-type agitator (3) comprises driver (31) and Z-type paddle (32), the input of described Z-type paddle (32) is connected to the output of described driver (31), and the output of described Z-type paddle (32) is positioned at described square mixing drum (4).

8. the feeding mechanism of extruder according to claim 7, it is characterized in that: several lodicules (322) that described Z-type paddle (32) comprises slurry axle (321) and is arranged on described slurry axle (321), lodicule described in several (322) is that " Z " type structure distribution is in described slurry axle (321).