CN216683258U

CN216683258U - Material mixing machine

Info

Publication number: CN216683258U
Application number: CN202123030236.4U
Authority: CN
Inventors: 陈兆信; 王国福; 王国政
Original assignee: Qingzhou Huasong Plastic Industry Co ltd
Current assignee: Qingzhou Huasong Plastic Industry Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-06-07
Anticipated expiration: 2031-12-01

Abstract

The application discloses blendor sets up in screw extruder's feed inlet, including compounding unit and heated air circulation unit. The mixing unit comprises a shell and a stirring shaft, the shell is enclosed into a mixing cavity, the stirring shaft is arranged in the mixing cavity, and the stirring shaft is used for stirring materials; the hot air circulation unit comprises a gas channel arranged inside the stirring shaft and an air outlet hole arranged on the surface of the stirring shaft, and the gas channel and the air outlet hole are communicated with each other; the hot air circulation unit also comprises an air inlet pipe, a heating device, an air return pipe, a filtering device and a circulating pipe, wherein the air inlet pipe is respectively connected with the gas channel and the heating device; the air return pipe is respectively connected with the mixing cavity and the filtering device, and the heating device is connected with the filtering device through a circulating pipe. The plasticizing quality and the yield are improved through the setting of the device, and the device is energy-saving, environment-friendly and cost-saving.

Description

Material mixing machine

Technical Field

The application belongs to the technical field of this application belongs to the blown film, especially relates to a blendor.

Background

The extruder is one of the types of plastic machinery, and the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of a screw, and the materials are molded through a mouth film. Plastic extruders can be largely classified into single screw extruders, twin screw extruders and multi-screw extruders, in which the extrusion blanking device is an auxiliary device used in conjunction with the extruder to facilitate feeding into the extruder.

The existing extrusion blanking device is generally communicated with a feeding hopper through the input end at the top of the extruder body. In the using process, on one hand, the quality of the materials is not high after the materials are melted in the extruder body due to the fact that the materials contain some moisture, and the quality of an extruded film is influenced; on the other hand, the yield is low and the practicability is poor due to the fact that materials are not mixed uniformly.

It will thus be seen that the prior art is susceptible to further improvement and enhancement.

SUMMERY OF THE UTILITY MODEL

The present invention provides a mixer to solve at least one of the above technical problems.

In order to achieve the purpose, the utility model provides a mixer which is arranged at a feed inlet of a screw extruder and comprises a mixing unit and a hot air circulation unit. The mixing unit comprises a shell and a stirring shaft, the shell is enclosed into a mixing cavity, the stirring shaft is arranged in the mixing cavity, and the stirring shaft is used for stirring materials; the hot air circulation unit comprises a gas channel arranged inside the stirring shaft and an air outlet hole arranged on the surface of the stirring shaft, and the gas channel and the air outlet hole are communicated with each other; the hot air circulation unit also comprises an air inlet pipe, a heating device, an air return pipe, a filtering device and a circulating pipe, wherein the air inlet pipe is respectively connected with the gas channel and the heating device; the air return pipe is respectively connected with the mixing cavity and the filtering device, and the heating device is connected with the filtering device through a circulating pipe.

According to the mixing device, the stirring shaft is arranged in the mixing cavity, and materials are stirred and mixed in the mixing cavity through the stirring shaft, so that the materials can be uniformly mixed, and the yield is improved; according to the extruder, the gas channel is arranged in the stirring shaft, the gas outlet hole is formed in the surface of the stirring shaft, so that hot air in the heating device can enter the mixing cavity through the gas inlet pipe, the stirring shaft is used for heating and drying materials while stirring, and the materials can be sufficiently dried, so that the plasticizing quality in the extruder is improved; gas after carrying out the heat transfer with the material gets into filter equipment through the muffler and filters back reentrant heating device again and heats rethread intake pipe circulation and get into the thoughtlessly expecting chamber, can carry out cyclic utilization, energy-concerving and environment-protective to heating gas.

In a preferred implementation mode, a connecting pipe is arranged at the air inlet end of the air inlet pipe, the stirring shaft is sleeved with the connecting pipe, and the connecting pipe is respectively connected with the gas channel and the heating device. This application has set up in the gas passage and the heating device of (mixing) shaft through the setting of connecting pipe.

In a preferred implementation mode, two ends of the connecting pipe are respectively provided with a sealing bearing, and the connecting pipe rotates relative to the stirring shaft through the sealing bearings. This application through sealed bearing's setting, on the one hand, has realized the relative rotation of connecting pipe and (mixing) shaft, and on the other hand has played sealed effect to the connecting pipe.

In a preferred implementation mode, the screw extruder further comprises a feeding pipe and a discharging pipe which are respectively communicated with the mixing cavity, and the discharging pipe is respectively communicated with the mixing cavity and the screw extruder. This application is through the setting of inlet pipe for carry out the feed supplement to the compounding chamber, this application is through the setting of unloading pipe, is used for discharging the material that mixes in the compounding chamber and dry completion into screw extruder.

In a preferred implementation, the feed pipe is provided with a first control valve and the blanking pipe is provided with a second control valve. This application can carry out real-time control and control to the incoming rate and the feed time of inlet pipe through the setting of first control valve and second control valve to and the discharge rate and the discharge time of unloading pipe.

In a preferred implementation mode, the quantitative discharging device further comprises a quantitative discharging unit, wherein the quantitative discharging unit comprises a discharging spiral and a discharging pipe, and the discharging pipe is arranged at the bottom of the shell and is coaxial with the stirring shaft; the blanking screw is arranged at the lower part of the stirring shaft, and the helical blades are arranged in the blanking pipe in a matching way. This application can realize the ration of compounding intracavity material and discharge through the setting of ration ejection of compact unit.

In a preferred implementation mode, the mixing cavity is obliquely arranged, and the length of the stirring shaft is sequentially increased from the bottom of the mixing cavity to the top of the mixing cavity. The material mixing cavity is obliquely arranged, so that materials can be conveniently added into the material mixing cavity from the feeding hole; this application is through the length with the (mixing) shaft increase progressively in proper order to the top direction in compounding chamber along the bottom in compounding chamber, can realize the hierarchical stirring to the material in the compounding chamber, improves the mixing efficiency to the material.

In a preferred realization, the filter device is a gas filter provided with a plurality of filter elements. This application can carry out a lot of filtration to the gas after carrying out heat exchange with the material in the compounding intracavity through setting up a plurality of filter cores with gas filter to guarantee gaseous purity, avoid gaseous pollution to the material.

In a preferred implementation, the heating device is provided with an electric heater.

In a preferred implementation mode, the inner side wall of the mixing cavity is provided with a heat insulation layer. This application can make the thoughtlessly expect the chamber and play heat retaining effect through the setting of heat preservation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a structural view of a mixer according to an embodiment of the present disclosure;

fig. 2 is a schematic assembly diagram of the seal bearing, the connecting pipe and the stirring shaft provided in the embodiment of the present application.

Description of reference numerals:

1. a mixing unit; 101. a housing; 1011. a mixing chamber; 1012. a feed pipe; 1013. a discharging pipe; 1014. a first control valve; 1015. a second control valve; 1016. a heat-insulating layer; 102. a stirring shaft;

2. a hot air circulation unit; 201. a gas channel; 202. an air outlet; 203. an air inlet pipe; 2031. a connecting pipe; 2032. sealing the bearing; 204. a heating device; 2041. an electric heater; 205. an air return pipe; 206. a filtration device; 207. a circulation pipe;

301. feeding spirally;

4. a screw extruder.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate.

In the present invention, unless otherwise explicitly stated or limited, the terms "connected" and the like are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrated; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Descriptions in this specification as relating to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to any indicated technical feature or quantity. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

As shown in figures 1-2, the utility model provides a mixer which is arranged at the feed inlet of a screw extruder 4 and comprises a mixing unit 1 and a hot air circulation unit 2. The mixing unit 1 comprises a shell 101 and a stirring shaft, the shell 101 encloses a mixing cavity 1011, the stirring shaft is arranged in the mixing cavity 1011, and the stirring shaft is used for stirring materials; the hot air circulation unit 2 comprises a gas channel 201 arranged inside the stirring shaft and an air outlet 202 arranged on the surface of the stirring shaft, and the gas channel 201 and the air outlet 202 are communicated with each other; the hot air circulation unit 2 further comprises an air inlet pipe 203, a heating device 204, an air return pipe 205, a filtering device 206 and a circulating pipe 207, wherein the air inlet pipe 203 is respectively connected with the gas channel 201 and the heating device 204; the air return pipes 205 are respectively connected with the mixing chamber 1011 and the filtering device 206, and the heating device 204 and the filtering device 206 are connected by the circulating pipe 207.

In the actual use process, materials are heated in the material mixing cavity 1011, and the materials are stirred under the action of the stirring shaft; while the stirring shaft stirs materials, the air inlet pipe 203 conveys hot air to the air inlet channel, the hot air is blown out from the air outlet holes 202 on the surface of the stirring shaft through other channels and exchanges heat with the materials, and the materials are stirred under the action of the stirring shaft and exchange heat; the hot air after heat exchange enters the filtering device 206 through the air return pipe 205, is filtered by the filtering device 206, enters the heating device 204 again for heating, and enters the mixing cavity 1011 again in a circulating manner.

From the above description, it can be seen that the present invention achieves the following technical effects:

according to the mixing device, the stirring shaft is arranged in the mixing cavity 1011, and materials are stirred and mixed in the mixing cavity 1011 through the stirring shaft, so that the materials can be uniformly mixed, and the yield is improved; according to the mixing device, the gas channel 201 is arranged in the mixing shaft, the gas outlet 202 is arranged on the surface of the mixing shaft, hot air in the heating device 204 can enter the mixing cavity 1011 through the gas inlet pipe 203, the mixing shaft heats and dries materials while mixing, and therefore the materials can be sufficiently dried, and the plasticizing quality in the extruder is improved; gas after exchanging heat with the material enters the filtering device 206 through the air return pipe 205, is filtered and then enters the heating device 204 again to be heated and then circularly enters the mixing cavity 1011 through the air inlet pipe 203, so that the heated gas can be recycled, and the energy conservation and environmental protection are realized.

In one embodiment, as shown in fig. 2, a connection pipe 2031 is provided at an air inlet end of the air inlet pipe 203, the connection pipe 2031 is sleeved on the stirring shaft, and the connection pipe 2031 is connected to the air channel 201 and the heating device 204 respectively. This application has communicated gas channel 201 and heating device 204 that set up in the (mixing) shaft through the setting of connecting pipe 2031. In specific implementation, the two ends of the connection pipe 2031 are respectively provided with a sealing bearing 2032, and the connection pipe 2031 rotates relative to the stirring shaft through the sealing bearing 2032. This application through sealed bearing 2032's setting, on the one hand, has realized the relative rotation of connecting pipe 2031 and (mixing) shaft, and on the other hand has played sealed effect to connecting pipe 2031.

In one embodiment, as shown in fig. 1, the mixing device further comprises a feeding pipe 1012 and a discharging pipe 1013 respectively communicated with the mixing chamber 1011, wherein the discharging pipe 1013 is respectively communicated with the mixing chamber 1011 and the screw extruder 4. This application is through the setting of inlet pipe 1012 for carry out the feed supplement to compounding chamber 1011, this application is through the setting of unloading pipe 1013, is used for discharging the material that mixes in compounding chamber 1011 and the drying is accomplished into screw extruder 4. In particular implementations, the feed tube 1012 is provided with a first control valve 1014 and the discharge tube 1013 is provided with a second control valve 1015. The feeding rate and the feeding time of the feeding pipe 1012 and the discharging rate and the discharging time of the discharging pipe 1013 can be controlled and monitored in real time through the arrangement of the first control valve 1014 and the second control valve 1015.

In one embodiment, as shown in fig. 1, the quantitative discharging unit further comprises a discharging screw 301 and a discharging tube 1013, wherein the discharging tube 1013 is disposed at the bottom of the casing 101 and is coaxial with the stirring shaft; the blanking screw 301 is arranged at the lower part of the stirring shaft, and the helical blades are arranged in the blanking pipe 1013 in a matching way. This application can realize the ration of material and discharge in the material mixing chamber 1011 through quantitative discharge unit's setting.

In one embodiment, as shown in fig. 1, mixing chamber 1011 is arranged obliquely, and the lengths of the stirring shafts increase in sequence from the bottom of mixing chamber 1011 to the top of mixing chamber 1011. According to the feeding device, the material mixing cavity 1011 is obliquely arranged, so that materials can be conveniently fed into the material mixing cavity 1011 from a feeding hole; this application scales up in proper order through the top direction with the length of (mixing) shaft along the bottom in compounding chamber 1011 to compounding chamber 1011, can realize the hierarchical stirring to the material in compounding chamber 1011, improves the mixing efficiency to the material.

In one embodiment, as shown in FIG. 1, the filter device 206 is a gas filter provided with a plurality of filter elements. This application can carry out a lot of to the gas after carrying out heat exchange with the material in compounding chamber 1011 and filter through setting up a plurality of filter cores with gas filter to guarantee gaseous purity, avoid gaseous pollution to the material. Of course, those skilled in the art will appreciate that the filter element may be an activated carbon filter element.

In one embodiment, the heating device 204 is provided with an electric heater 2041. Of course, those skilled in the art will appreciate that the electric heater 2041 may be a resistance wire heater.

In one embodiment, as shown in FIG. 1, the inner sidewalls of the compounding chamber 1011 are provided with insulation 1016. This application can make compounding chamber 1011 play heat retaining effect through the setting of heat preservation 1016. Of course, those skilled in the art will appreciate that the insulation 1016 may be provided as rock wool insulation.

The method can be realized by adopting or referring to the prior art in places which are not described in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a blendor sets up in screw extruder's feed inlet, its characterized in that includes:

the mixing unit comprises a shell and a stirring shaft, wherein the shell is enclosed into a mixing cavity, the stirring shaft is arranged in the mixing cavity, and the stirring shaft is used for stirring materials;

the hot air circulation unit comprises a gas channel arranged inside the stirring shaft and a gas outlet hole arranged on the surface of the stirring shaft, and the gas channel is communicated with the gas outlet hole; the hot air circulation unit also comprises an air inlet pipe, a heating device, an air return pipe, a filtering device and a circulating pipe, wherein the air inlet pipe is respectively connected with the air channel and the heating device; the air return pipe is respectively connected with the mixing cavity and the filtering device, and the heating device is connected with the filtering device through the circulating pipe.

2. The mixer of claim 1, wherein a connecting pipe is disposed at an air inlet end of the air inlet pipe, the connecting pipe is sleeved on the stirring shaft, and the connecting pipe is respectively connected to the air channel and the heating device.

3. The mixer of claim 2, wherein the connecting tube is provided with sealing bearings at both ends thereof, and the connecting tube is rotated relative to the stirring shaft through the sealing bearings.

4. The mixer of claim 1, further comprising a feed tube and a discharge tube in communication with the mixing chamber, respectively, the discharge tube in communication with the mixing chamber and the screw extruder, respectively.

5. A mixer according to claim 4, wherein the feed pipe is provided with a first control valve and the discharge pipe is provided with a second control valve.

6. The mixer of claim 4, further comprising a quantitative discharge unit including a discharge screw and the discharge tube, wherein the discharge tube is disposed at the bottom of the housing and is coaxial with the stirring shaft; the blanking screw is arranged at the lower part of the stirring shaft, and the helical blades are arranged in the blanking pipe in a matching way.

7. The mixer of claim 1, wherein the mixing chamber is inclined, and the length of the mixing shafts increases in the direction from the bottom of the mixing chamber to the top of the mixing chamber.

8. A mixer according to claim 1, wherein said filter means is a gas filter provided with a plurality of filter elements.

9. A mixer according to claim 1, wherein the heating means is provided with an electric heater.

10. The mixer of claim 1, wherein the inner wall of the mixing chamber is provided with an insulating layer.