Internal mixer for plastic

Abstract

The utility model relates to the technical field of plastic internal mixers, and particularly discloses a plastic internal mixer which comprises an internal mixer body, a smoke exhaust pipeline and a feeding pipeline, the smoke exhaust pipeline is of a straight pipe structure and is mounted at the top of the internal mixer body, and a connector is mounted at the top of the smoke exhaust pipeline and used for being connected with a gas purification device; a flue cleaning mechanism is arranged in the advancing direction of the smoke exhaust pipeline and comprises a bottom plate and a sweeping pipe, the sweeping pipe is rotationally installed on the bottom plate through a bearing, the other end of the sweeping pipe is rotationally installed on a top plate, and the top plate is connected with a lifting mechanism used for driving the top plate to move up and down. The flue cleaning mechanism is arranged at the smoke exhaust pipeline, the bottom plate, the sweeping pipe, the cleaning brush and the top plate can be fed into the smoke exhaust pipeline, the interior of the smoke exhaust pipeline is cleaned, internal parts of the smoke exhaust pipeline are extracted from the smoke exhaust pipeline after cleaning, and operation of the smoke exhaust pipeline cannot be hindered.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic internal mixers, and in particular relates to an internal mixer for plastics. Background Art

[0002] Closed plastic mixer is called internal mixer for short. The main part of internal mixer is internal mixing chamber, also called plastic mixing chamber, with feeding device at the top and unloading device at the bottom, and a bolt at the top and bottom. When the top bolt and the bottom bolt are closed, a closed plastic mixing chamber is formed. There is a cooling (heating) jacket on the outer wall of plastic mixing chamber to heat and cool the material.

[0003] A mixer that shears the material by rotating a paddle impeller in a sealed cylindrical container. The container and the impeller are both provided with small holes, and the material temperature can be adjusted by heating or cooling. It is used for mixing plastics or rubber. The advantage of this mixer is that it has the least risk of dust and smoke. The Banbury mixer is a typical example.

[0004] In the Chinese patent with publication number CN 206527917 U, two sets of stirring mechanisms are used to improve stirring efficiency; the stirring blades used have good wear resistance and long service life, can improve the uniformity of plastic stirring, and can crush large particles of plastic; improve the mixing quality of plastic;

[0005] However, when plastic is mixed, the gas discharged will be mixed with a large amount of impurities such as dirty oil and carbon black powder. The dirty oil and carbon black powder have strong adhesion and are very easy to adhere to the inner wall of the smoke exhaust duct, causing the smoke exhaust duct to be sticky as a whole. In this state, dust is very easy to adhere to, causing the smoke exhaust duct to be blocked. Utility Model Content

[0006] The purpose of the utility model is to provide a plastic internal mixer to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above purpose, the utility model provides the following technical solutions, including an internal mixer body, a smoke exhaust pipe, and a feed pipe; the smoke exhaust pipe is set as a straight pipe structure and installed on the top of the internal mixer body, and a connector is installed on the top, and the connector is used to connect the gas purification device;

[0008] A flue cleaning mechanism is arranged in the direction of travel of the smoke exhaust pipe, and the flue cleaning mechanism comprises a bottom plate and a cleaning pipe. The cleaning pipe is rotatably mounted on the bottom plate through a bearing, and the other end of the cleaning pipe is rotatably mounted on the top plate. The top plate is connected to a lifting mechanism for driving it to move up and down.

[0009] Preferably, the stroke of the lifting mechanism is greater than the length of the smoke exhaust pipe.

[0010] Preferably, three sliding blocks are installed on the bottom plate, and the sliding blocks are slidably connected to the guide grooves in the smoke exhaust pipe.

[0011] Preferably, a limit ring is fixedly installed at one end of the smoke exhaust pipe inserted into the internal mixer body, the inner diameter of the limit ring is smaller than the outer diameter of the bottom plate, the outer wall of the bottom plate fits with the inner wall of the smoke exhaust pipe, and the side of the bottom plate that fits with the smoke exhaust pipe is quenched.

[0012] Preferably, a cleaning brush is installed on the side of the cleaning pipe close to the inner wall of the smoke exhaust pipe, and a plurality of lower sewage outlets are provided on the side of the cleaning pipe close to the bottom plate.

[0013] Preferably, the lower sewage outlet is connected to the transfer chamber inside the cleaning pipe, the transfer chamber is connected to the upper sewage outlet at the top, the upper sewage outlet is connected to the storage chamber in the sewage joint, and the storage chamber is connected to the sewage pump through a first hose.

[0014] Preferably, a water supply pipe is inserted into the top plate, the water supply pipe is fixedly installed in the storage tube, the bottom plate is slidably connected to the inner wall of the storage tube, the lifting mechanism is fixedly installed on the storage tube, and the cleaning pipe is connected to a driving motor for driving its rotation.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a flue cleaning mechanism at the smoke exhaust duct, which can deliver a bottom plate, a cleaning pipe, a cleaning brush and a top plate into the smoke exhaust duct to clean the inside of the smoke exhaust duct. After cleaning, the internal components are pulled out from the smoke exhaust duct and will not hinder the operation of the smoke exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0019] Figure 3 It is a connection diagram of the smoke exhaust duct and the smoke duct cleaning mechanism in the utility model.

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the structure at A in the middle.

[0021] In the figure: 1, internal mixer body; 2, exhaust pipe; 201, guide groove; 202, limit ring; 3, connector; 4, flue cleaning mechanism; 401, bottom plate; 402, cleaning pipe; 403, lower sewage outlet; 404, cleaning brush; 405, upper sewage outlet; 406, sewage connector; 407, driving motor; 408, lifting mechanism; 409, top plate; 410, sewage pump; 411, water supply pipe;

[0022] 5. Feed pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 4 , a plastic internal mixer, a mixer that gives shearing effect to materials by means of the rotation of a paddle impeller in a closed cylindrical container. The container and the impeller are both provided with small holes, and the material temperature can be adjusted by heating or cooling. It is used for mixing plastics or rubber, and includes an internal mixer body 1, a smoke exhaust pipe 2, and a feed pipe 5. The smoke exhaust pipe 2 is set as a straight pipe structure and is installed on the top of the internal mixer body 1. A connector 3 is installed on the top. The connector 3 is used to connect to a gas purification device. The gas purification device is used to remove dirty oil and carbon black powder generated during the plastic internal mixing process. It should be noted that Figure 1 For example, the smoke exhaust pipe 2 is set as a vertical pipe, and the connector 3 connected thereto is perpendicular to it. The connector 3 needs to be outside the straight range of the smoke exhaust pipe 2, so that the subsequent flue cleaning mechanism 4 will not be hindered by the connector 3 when feeding;

[0025] In order to clean the dirty oil, carbon black powder and the like adhered to the inner wall of the smoke exhaust pipe 2 during the process of exhausting smoke, the direction of movement of the smoke exhaust pipe 2 is from bottom to top, and a smoke duct cleaning mechanism 4 is arranged in the direction of movement of the smoke exhaust pipe 2, and the smoke duct cleaning mechanism 4 comprises a bottom plate 401 and a cleaning pipe 402, the cleaning pipe 402 is rotatably mounted on the bottom plate 401 through a bearing, and the other end of the cleaning pipe 402 is rotatably mounted on the top plate 409, and the top plate 409 is connected to a lifting mechanism 408 for driving it to move up and down, and the stroke of the lifting mechanism 408 is greater than the length of the smoke exhaust pipe 2. In order to be able to clean the entire smoke exhaust pipe 2, the stroke of the lifting mechanism 408 needs to be greater than the length of the smoke exhaust pipe 2, so that the cleaning pipe 402 and the cleaning brush 404 therein can clean the entire smoke exhaust pipe 2;

[0026] In a further embodiment, three sliders are installed on the bottom plate 401, and the sliders are slidably connected with the guide grooves 201 in the smoke exhaust pipe 2. A limit ring 202 is fixedly installed on one end of the smoke exhaust pipe 2 inserted into the internal mixer body 1. The inner diameter of the limit ring 202 is smaller than the outer diameter of the bottom plate 401. The outer wall of the bottom plate 401 fits the inner wall of the smoke exhaust pipe 2. The side of the bottom plate 401 that fits the smoke exhaust pipe 2 is quenched. The quenched bottom plate 401 has higher hardness and stronger wear resistance, is not easily damaged during the up and down movement, and maintains better sealing performance.

[0027] Specifically, a cleaning brush 404 is installed on one side of the cleaning pipe 402 close to the inner wall of the smoke exhaust pipe 2, and a plurality of lower sewage outlets 403 are arranged on one side of the cleaning pipe 402 close to the bottom plate 401, the lower sewage outlets 403 are connected to the transfer chamber inside the cleaning pipe 402, the transfer chamber is connected to the upper sewage outlet 405 at the top, the upper sewage outlet 405 is connected to the storage chamber in the sewage joint 406, and the storage chamber is connected to the sewage pump 410 through the first hose;

[0028] It should be noted that the lower sewage outlet 403, the transfer chamber, the storage chamber, and the sewage pump 410 form a sewage channel. When cleaning the dirty oil on the inner wall of the smoke exhaust pipe 2, the generated sewage can be discharged from the sewage channel to ensure the cleanliness of the inside of the smoke exhaust pipe 2, and at the same time prevent the sewage from flowing back into the inside of the internal mixer body 1 to prevent the sewage from damaging the plastic raw materials;

[0029] In a further embodiment, in the process of cleaning the dirty oil on the inner wall of the smoke exhaust duct 2 by the cleaning brush 404, it is necessary to use a chemical agent so as to remove the dirty oil, carbon black powder and other impurities adhering to the inner wall of the smoke exhaust duct 2. Therefore, a water supply pipe 411 is inserted in the top plate 409, and the water supply pipe 411 is fixedly installed in the storage tube, the bottom plate 401 is slidably connected to the inner wall of the storage tube, the lifting mechanism 408 is fixedly installed on the storage tube, and the cleaning pipe 402 is connected to the driving motor 407 for driving it to rotate; the water supply pipe 411 can deliver clean water to the space between the bottom plate 401 and the top plate 409. As the lifting mechanism 408 drives the bottom plate 401 and the top plate 409 to move up and down, the height of the cleaning pipe 402 can be changed. When it is moved into the smoke exhaust duct 2, the cleaning pipe 402 is driven to rotate by the driving motor 407, so that the inner wall of the smoke exhaust duct 2 can be flushed to remove the dirty oil adhering thereto, and the formed sewage is discharged through the sewage discharge channel.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic internal mixer, comprising an internal mixer body (1), a smoke exhaust pipe (2), and a feed pipe (5), characterized in that; The smoke exhaust pipe (2) is configured as a straight pipe structure and is installed on the top of the internal mixer body (1). A connector (3) is installed on the top. The connector (3) is used to connect to a gas purification device. A flue cleaning mechanism (4) is arranged in the direction of travel of the smoke exhaust pipe (2), and the flue cleaning mechanism (4) comprises a bottom plate (401) and a cleaning pipe (402), wherein the cleaning pipe (402) is rotatably mounted on the bottom plate (401) via a bearing, and the other end of the cleaning pipe (402) is rotatably mounted on a top plate (409), and the top plate (409) is connected to a lifting mechanism (408) for driving the cleaning pipe to move up and down.

2. A plastic mixer according to claim 1, characterized in that: The stroke of the lifting mechanism (408) is greater than the length of the smoke exhaust pipe (2).

3. A plastic mixer according to claim 1, characterized in that: Three sliding blocks are installed on the bottom plate (401), and the sliding blocks are slidably connected to the guide grooves (201) in the smoke exhaust pipe (2).

4. A plastic mixer according to claim 3, characterized in that: A limiting ring (202) is fixedly installed on one end of the smoke exhaust pipe (2) inserted into the internal mixer body (1); the inner diameter of the limiting ring (202) is smaller than the outer diameter of the bottom plate (401); the outer wall of the bottom plate (401) fits the inner wall of the smoke exhaust pipe (2); and the side of the bottom plate (401) that fits the smoke exhaust pipe (2) is quenched.

5. The internal mixer for plastics according to claim 1, characterized in that: A cleaning brush (404) is installed on one side of the cleaning pipe (402) close to the inner wall of the smoke exhaust pipe (2), and a plurality of lower sewage outlets (403) are provided on one side of the cleaning pipe (402) close to the bottom plate (401).

6. The internal mixer for plastics according to claim 5, characterized in that: The lower sewage outlet (403) is connected to the transfer chamber inside the cleaning pipe (402), the transfer chamber is connected to the upper sewage outlet (405) at the top, the upper sewage outlet (405) is connected to the storage chamber in the sewage connector (406), and the storage chamber is connected to the sewage pump (410) through a first hose.

7. The internal mixer for plastics according to claim 6, characterized in that: A water supply pipe (411) is inserted into the top plate (409), and the water supply pipe (411) is fixedly installed in the storage tube. The bottom plate (401) is slidably connected to the inner wall of the storage tube. The lifting mechanism (408) is fixedly installed on the storage tube. The cleaning tube (402) is connected to a driving motor (407) for driving the cleaning tube to rotate.

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