| Contact Usgravimetric blender manufacturers!Main model:plastic dosing unit | gravimetric batch blender | Gravimetric dosing system | gravimetric dosing and mixing units
Gravimetric blender related technologyFocus on the development and production of Gravimetric blender equipment for many years
ProductsProduct Center
Dehumidifying dryer
Gravimetric dosing system
gravimetric batch blender
Central conveyor system
Gravimetric blender
plastic dosing unit
color doser
Weighing the mixture
Your location:Home ->Gravimetric blender ->Technology

Manufacturing method of Gravimetric blender machine


source:[Gravimetric blender]   release time:2021-01-19 13:48:33




The utility model relates to the field of weighing and measuring machines, in particular to a weighing and measuring machine used in the plastic production process.
Background technique:
Plastic products were first born at the beginning of the 20th century. The first synthetic resin in human history was born and industrialized production was realized, which opened the prelude to the development of man-made synthetic resin and plastic processing industry. Subsequently, petrochemical products gradually became the main source of raw materials for the production of synthetic resins. The invention of catalysts and the development and synthesis of engineering plastics created conditions for the rapid development of the plastics processing industry.
After long-term struggle and openness to the world, China’s plastics industry has formed a relatively complete industrial system, and has become a basic material industry that goes hand in hand with steel, cement, and wood. As a new type of material, its application fields have far surpassed the above three. Kind of material. Nowadays, plastic products have become an indispensable part of people's lives, and people have higher and higher requirements for the quality of plastics.
The plastic we usually use is not a pure substance, it is made up of many materials. Among them, high molecular polymers (or synthetic resins) are the main components of plastics. In addition, in order to improve the performance of plastics, various auxiliary materials, such as fillers, plasticizers, lubricants, stabilizers, Colorants, etc., can become plastics with good performance. In the industrial production of plastics, it is necessary to mix a variety of raw materials. The traditional batching is carried out manually. The batching process will generate a large amount of dust. The dust and these organic matter will cause great harm to the workers' body and consume a lot of manpower. , It will also produce a large error, which will affect the quality of the product and the quality level is unstable.
In traditional plastic extrusion products, because the extruder's feeding system does not have precise ingredients and meter weight control devices, it is impossible to control the unloaded meter weight, resulting in poor quality of the plastic products extruded by the extruder. The waste of raw materials is large, and it is difficult to meet the requirements of modern people for plastic products; and with the rapid development of multi-layer co-extrusion technology and the continuous improvement of the automation and intelligence of product production, traditional plastic extruders can no longer meet the requirements. The development needs of modern industry require the development of equipment that can strictly control the meter weight and improve product quality. In the existing weighing and measuring equipment, usually the batching device and the mixing device are separately arranged, which is inconvenient to use and covers a large area, which causes a waste of industrial resources. Existing machines usually do not have any level indicator. The hopper is usually made of opaque material. It is very inconvenient to know the remaining amount of material in the hopper during the production process. If the material in the hopper has been used up, the staff did not find out in time, causing Idling the machine will cause great damage to the machine. In addition, many of the existing weighing and measuring machines do not have the function of stirring or crushing. After weighing, the materials need to be mixed in a separate device, which increases the number of processes and is inconvenient to operate. Or there are problems such as large size of the machine, occupying space, complicated structure and high cost.
Technical realization elements:
The purpose of this utility is to provide a new type of weighing and measuring machine in view of the shortcomings of the prior art, which has simple structure, simple and convenient operation, space saving, and has the functions of stirring and crushing at the same time.
In order to solve the above technical problems, the utility model provides a new type of weighing and measuring machine, which includes a bracket, a storage device, a weighing device and a stirring device.
The storage device includes a plurality of storage hoppers and corresponding metering valves, and the metering valve is arranged at the mouth of the funnel of the storage hopper;
The weighing device includes a weighing hopper and a weighing sensor installed at the bottom of the weighing hopper, and the entrance of the weighing hopper is connected to the storage hopper through a metering valve;
The stirring device includes a stirring chamber and a stirrer. The stirring chamber is located below the weighing hopper, and is connected to the weighing hopper through a weighing discharge valve set at the outlet of the weighing hopper. The device is composed of a number of stirring paddles, each of which is composed of a stirring shaft and a stirring hammer arranged at the end of the stirring shaft. A cutting knife is arranged inside the stirring shaft, and the blade of the cutting knife faces the direction of rotation of the stirring shaft.
Further, the metering valve is connected with a cylinder, and the cylinder controls the opening and closing.
The metering valve is opened and closed by a cylinder, and the air hole of the cylinder is connected with an air compressor to control the movement of the cylinder.
Further, the storage hopper has a funnel shape.
The storage hopper is set in a funnel shape, which can better make the material leak out.
Further, the mixing chamber is in the shape of a funnel, and a mixing discharge valve is provided at the mouth of the funnel.
During the mixing process, the mixing and discharging valve is closed. After the mixing is completed, the mixing and discharging valve is opened to discharge the mixed materials.
Further, the storage hopper is equipped with a first material level sensor and a first material level indicator light.
Each storage hopper is equipped with a first material level sensor. When the material level is lower than the material level switch position, the first material level indicator light is on, prompting that raw materials should be added. When the material level reaches or exceeds the material level switch position, the first material level The indicator light goes out.
Further, a second material level sensor and a second material level indicator light are installed in the mixing chamber.
The second material level sensor on the mixing chamber is used to detect the material level of the mixing chamber. When the material level on the mixing chamber is higher than the position of the material level switch, the second material level indicator will be on and the machine will suspend the metering cycle until the material level After it falls below the switch position, it resumes work, and the second material level indicator goes out.
Further, protruding crushing teeth are provided on the stirring hammer, and the crushing teeth are in a conical shape.
The mixing hammer is provided with protruding cone-shaped crushing teeth, which have a sharp structure and can crush agglomerated materials, so that the materials are mixed more uniformly.
Further, the agitator is connected by a motor provided outside the mixing chamber to regulate the rotation speed.
Further, the storage device, the weighing device and the stirring device are all independently arranged, and they are detachably connected to each other.
The modular design is adopted, and the devices are detachably connected, which is convenient for later repair and cleaning.
Further, the storage device, the weighing device and the stirring device are fixedly installed on the bracket from top to bottom in sequence, which saves space and is easy to move.
Preferably, the number of storage hoppers is generally 2-6, and the material of the storage hopper is preferably stainless steel. When in use, only one kind of raw material is placed in each storage hopper to ensure that the raw materials are not polluted, and the metering valve is usually closed.
When using, pre-set the weight of the raw materials required by the different storage hoppers, and then open the metering valve under one of the storage hoppers, and close the metering valves under the other storage hoppers, and start weighing. When the load cell senses that the weight reaches the preset value When the value is reached, the metering valve is closed, and the metering valve under the other storage hopper is opened to weigh the next raw material, and proceed in sequence. Since the end of the stirring shaft of the stirring blade is equipped with a stirring hammer and a cutting knife is arranged on the inside, the stirring hammer can effectively stir the materials, and the cutting knife can effectively cut small agglomerated materials, making the mixing of the materials more uniform.
The beneficial effects of the utility model are:
(1) This utility model is equipped with the storage device, weighing device and stirring device from top to bottom, and at the same time, it is equipped with powder teeth, stirring hammer and cutting knife, so that all materials can be measured by gravity. Uniform mixing while strictly controlling the accuracy.
(2) The batching technology of the utility model is advanced, which can accurately control and measure the ratio of each raw material.
(3) The device of the utility model is a modular and detachable structure design, which is convenient for later maintenance and repair.
(4) The utility model has the advantages of compact structure, space saving, simple operation and accurate proportioning, which can effectively improve product quality and stability, and can greatly reduce the manpower required for production and further reduce the production cost.
Description of the drawings
Figure 1 is a schematic diagram of the structure of the utility model;
Figure 2 is a schematic diagram of the agitator of the present invention.
In the picture: 1 bracket, 2 electric control box, 3 cylinder, 4 metering valve, 5 storage hopper, 6 weighing hopper, 7 weighing sensor, 8 weighing discharge valve, 9 touch screen, 10 mixing chamber, 11 agitator, 111 mixing hammer, 112 crushing teeth, 113 cutting knife, 12 mixing and discharging valve.
detailed description
Hereinafter, the weighing and measuring machine of the present invention will be further described through specific embodiments.
The following descriptions are only examples of utility models, and do not limit the scope of utility model patents. Any equivalent structure or equivalent process transformation made by using utility model descriptions and drawings, or directly or indirectly applied to other related technologies In the same way, all areas are included in the scope of patent protection for utility models.
Example 1
A weighing and measuring machine includes a bracket 1, a storage device, a weighing device and a stirring device.
The storage device includes four storage hoppers 5 arranged side by side and a corresponding metering valve 4. The storage hopper is in the shape of a funnel and is located on the top of the bracket 1. The metering valve 4 is located at the hopper of the storage hopper, and the metering valve 4 is connected with a cylinder 3 to control its opening and closing.
The weighing device includes a weighing hopper 6 and a weighing sensor 7 installed at the bottom of the weighing hopper 6. The inlet of the weighing hopper 6 is connected to the storage hopper 5 through a metering valve 4,
The mixing device includes a mixing chamber 10 and a stirrer 11. The mixing chamber 10 is located below the weighing hopper 6, and is connected to the weighing hopper 6 through a weighing discharge valve 8 set at the outlet of the weighing hopper 6, and the agitator 11 is located in the mixing chamber 10 Inside, the stirrer 11 is composed of several stirring paddles, each of which is composed of a stirring shaft and a stirring hammer 111 arranged at the end of the stirring shaft. A cutting knife 113 is arranged inside the stirring shaft, and the blade of the cutting knife 113 faces the direction of rotation of the stirring shaft. The stirring hammer 111 and the stirring shaft are integrally formed, and the cutting knife 113 is fixed on the stirring shaft with screws. The mixing chamber 10 is in the shape of a funnel, and a mixing discharge valve 12 is provided at the mouth of the funnel.
The weighing and measuring machine is also provided with an electric control box 2 and a touch screen 9, and the signal output terminal of the touch screen 9 is connected with the signal input terminal of the electric control box 2. The user can set various raw material weight parameters and mixing time through the touch screen 9.
The metering valve 4 is connected with the cylinder 3 through corresponding components, and the cylinder 3 is connected with an air compressor that controls its movement. The signal input end of the air compressor is connected to the signal output end of the electric control box and the signal output end of the load cell 7. When in use, the user first sets the relevant parameters through the touch screen 9. After the setting is completed, the electric control box sends out a signal to make the air compressor drive the cylinder 3 to move the metering valve 4 to open the discharge, when the load cell 7 senses that the weight reaches the preset value At this time, it sends a signal to the air compressor to control the cylinder 3 to close the metering valve 4.
When in use, turn on the power switch and add different raw materials into each storage hopper 5. If there are four storage hoppers, the four storage hoppers 5 contain abcd kinds of raw materials. When the machine starts to work, the cylinder 3 under material a will act. 3 drives the metering valve 4 to open, and material a falls into the weighing hopper 6; when the weighing sensor 7 in the weighing hopper 6 senses that the weight reaches the preset value, the cylinder 3 below the material a acts, and the cylinder 3 drives the metering valve 4 is closed, the cylinder 3 under the material b acts to drive the metering valve 4 to open, so four cycles. The mixing and discharging valve 12 under the mixing chamber 10 is closed. When the four raw materials fall into the weighing hopper 6, and the weights reach the preset value, the weighing and discharging valve 8 is opened, and the raw materials are falling into the mixing chamber. When the mixing time is within 10, the mixing starts. When all the raw materials in the weighing hopper 6 fall into the mixing chamber 10, the weighing discharge valve 8 is closed, the agitator 11 continues to mix for a period of time, and the mixture is discharged after the mixing is uniform. The valve 12 is opened, and the mixed raw materials fall into the storage barrel or the injection molding machine, and such a working cycle is completed.
The utility model has a compact structure design and can effectively save space. All materials are uniformly mixed after being measured by gravity, and the precision can be strictly controlled, so that the quality of different batches of products is more stable, and the quality of the products is effectively guaranteed. The operation of the utility model is simple and easy to learn, and the manpower required can be greatly reduced, which not only improves the production efficiency, but also reduces the production cost, and is scientific and economical.
Example 2
The difference between this embodiment and the first embodiment is that the storage hopper is equipped with a first material level sensor and a first material level indicator.
Each storage hopper 5 is equipped with a first material level sensor. When the material level is lower than the material level switch position, the first material level indicator light is on, prompting that raw materials should be added. When the material level reaches or exceeds the material level switch position, the first material level The bit indicator goes out.
Example 3
The difference between this embodiment and the second embodiment is that the mixing chamber 10 is equipped with a second material level sensor and a second material level indicator.
The second material level sensor on the mixing chamber 10 is used to detect the material level of the mixing chamber. When the material level on the mixing chamber is higher than the position of the material level switch, the second material level indicator will be on and the machine will suspend the metering cycle until the material After the position is lower than the switch position, it resumes work, and the second material level indicator goes out.
The indicator light can reflect the status of the machine, which is convenient for production management.
Example 4
The difference between this embodiment and the first embodiment is that the mixing hammer is also provided with protruding crushing teeth 112, and the crushing teeth 112 are in a conical shape.
The mixing hammer is provided with protruding cone-shaped crushing teeth, which have a sharp structure and can crush agglomerated materials, so that the materials are mixed more uniformly.
Example 5
The difference between this embodiment and the embodiment 4 is that the agitator 11 is connected by a motor provided outside the mixing chamber 10 to control the rotation speed.
Example 6
The difference between this embodiment and Embodiment 1 is that the storage device, weighing device and stirring device of this device are all independently arranged, and all adopt detachable connection.
The modular design is adopted, and the devices are detachably connected, which is convenient for later repair and cleaning.
In summary, the weighing and measuring machine of the present utility model has a compact structure, space saving, accurate ratio, scientific system, and can effectively improve product quality, and the product quality is stable.
At the same time, the utility model has simple operation and high efficiency, and is suitable for use occasions where multiple raw materials needed in the plastic extrusion process are accurately mixed in proportions. The later cleaning and maintenance are convenient, labor saving, low production cost, easy production management, and marketable. Value.[Gravimetric blender]