Particle feeding and weighing device

Abstract

The utility model discloses a particle feeding and weighing device. The particle feeding and weighing device comprises a fixed seat, a feeding hopper, a weighing module, a stirring assembly and a conveying assembly, uniform mixing of particles is guaranteed through the stirring assembly, the weighing module monitors the material weight in real time and regulates and controls the conveying speed of the conveying assembly, uniform discharging is guaranteed, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe processing, and in particular to a pellet feeding and weighing device. Background Technology

[0002] High-density polyethylene (HDPE) is a highly crystalline, non-polar thermoplastic resin widely used in water supply and drainage piping systems. Compared to traditional pipes, HDPE pipes offer advantages such as light weight, corrosion resistance, low flow resistance, and ease of installation, gradually replacing cast iron and galvanized steel pipes. In the production process of HDPE pipes, the uniform mixing and precise weighing of the plastic granules are crucial steps in ensuring pipe quality.

[0003] Loss-in-weight weighers, as a continuous weighing device, are widely used for controlling the batching of fine materials such as cement and lime powder. However, while existing loss-in-weight weighers have a conical structure at the bottom of the hopper to reduce bridging, the free flowability and stickiness of powder materials when damp still lead to problems such as material slugging or clogging, resulting in reduced production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a particle feeding and weighing device with reasonable structure and simple operation.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a pellet feeding and weighing device, including a fixed base, a feeding hopper, a weighing module, a mixing assembly, and a conveying assembly. The weighing module is installed on the fixed base and is used to measure the weight of the material in real time; the mixing assembly is used to mix the pellets to ensure uniform material distribution; the conveying assembly is used to control the feeding speed of the pellets to ensure uniform discharge.

[0007] As a preferred embodiment of this utility model, the weighing module includes four weighing sensors symmetrically arranged along the fixed base. Each weighing sensor is fixed to the middle of the fixed base by a sensor fixing bracket, and a support plate for supporting the stirring assembly is installed above each weighing sensor.

[0008] As a preferred embodiment of this utility model, the stirring assembly includes a stirring box, a stirring motor, a stirring main shaft, and multiple sets of stirring blades. The four corners of the stirring box are fixed to the weighing module; the stirring motor is fixed to the side wall of the stirring box; the stirring main shaft is rotatably connected to both sides of the stirring box through bearings and bearing seats, and is coaxially arranged with the output shaft of the stirring motor; the stirring blades are provided in three sets, and are evenly distributed along the circumference of the stirring main shaft.

[0009] As a preferred embodiment of this utility model, the conveying assembly includes a transmission motor, a material conveying cylinder, a conveying shaft, and conveying blades. The material conveying cylinder is fixed below the mixing tank and communicates with the bottom of the mixing tank. The transmission motor is fixed to one side of the material conveying cylinder. The conveying shaft is coaxially arranged with the output shaft of the transmission motor and is rotatably connected to the material conveying cylinder through a bearing and a bearing seat. The conveying blades are evenly distributed along the circumference of the conveying shaft.

[0010] As a preferred embodiment of this utility model, a filter screen is also fixed at the bottom of the feeding hopper, and the filter screen is located directly above the mixing tank body. The filter screen is square.

[0011] As a preferred embodiment of this utility model, the material conveying cylinder has a discharge port at one end, and the opening direction of the discharge port is vertically downward.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The mixing components can continuously mix the granular raw materials, making it less likely for the granular raw materials to accumulate in the mixing box and ensuring that the granular raw materials are fully mixed. The three sets of mixing blades are evenly distributed along the mixing main shaft, which increases the fluidity of the granules and the mixing effect, avoiding the problems of granule accumulation or uneven local mixing. The uniformity of granule mixing is significantly improved, ensuring the stable quality of the plastic pipes subsequently extruded.

[0014] 2. By using the conveying component and the weighing module together, the weighing module measures the weight of the particles in the mixing component in real time. The control system automatically adjusts the transmission motor according to the weighing data, thereby controlling the particle feeding speed, ensuring uniform discharge flow, and improving product quality. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

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

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

[0018] Figure 3 This is a side view of the present invention;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0020] In the diagram: 1. Fixed base; 2. Feeding hopper; 3. Weighing module; 4. Mixing assembly; 5. Conveying assembly; 6. Filter screen; 7. Discharge port; 31. Weighing sensor; 32. Sensor fixing bracket; 33. Support plate; 41. Mixing box body; 42. Mixing motor; 43. Mixing main shaft; 44. Mixing blades; 51. Transmission motor; 52. Material conveying cylinder; 53. Conveying shaft; 54. Conveying blades. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] In the attached diagram, all identical reference numerals refer to the same components.

[0023] like Figure 1-4 As shown, this utility model provides a particle feeding and weighing device, including a fixed base 1 and a feeding hopper 2 installed on the top of the fixed base 1. A weighing module 3 for weighing materials is installed on the fixed base 1. A stirring component 4 is connected above the weighing module 3. The stirring component 4 is used to stir and mix the particles. A conveying component 5 for outputting the mixed particles is also fixedly installed below the stirring component 4.

[0024] The method of using this utility model is as follows:

[0025] 1. Different types of granular raw materials are poured into the feeding hopper 2. Under the action of gravity, the granular raw materials pass through the filter screen 6 at the bottom of the feeding hopper. The filter screen 6 is used to remove impurities or large pieces of material in the granules, ensuring that the granules entering the mixing box 41 are uniform and meet the requirements.

[0026] 2. After passing through the filter screen, the granular raw material enters the mixing chamber 41. The stirring motor 42 is started, and the stirring motor drives the stirring main shaft 43 to rotate. The three sets of stirring blades 44 on the stirring main shaft thoroughly stir the granular raw material. The design of the stirring blades ensures that the granules are evenly mixed in the mixing chamber, avoiding granule accumulation or blockage and improving the mixing effect.

[0027] 3. The weighing module 3 monitors the weight of the particles in the mixing tank 41 in real time through four symmetrically arranged weighing sensors 31; the weighing sensors transmit the weight data to the control system, and the control system adjusts the speed of the transmission motor 51 according to the weight change; when the weight of the particles in the mixing tank 41 reaches the lower limit, the transmission motor accelerates to increase the discharge; when the weight of the particles reaches the upper limit, the transmission motor stops rotating and the feeding stops.

[0028] 4. The uniformly mixed particles enter the material conveying cylinder 52 from the bottom of the mixing tank. The transmission motor 51 drives the conveying shaft 53 to rotate. The conveying blades 54 on the conveying shaft push the particles toward the discharge port 7. The particles are discharged vertically downward from the discharge port 7, ensuring uniform and controllable discharge.

[0029] Furthermore, the weighing module 3 includes four weighing sensors 31 symmetrically arranged along the fixed base 1. Each weighing sensor 31 is fixed to the middle of the fixed base 1 by a sensor fixing bracket 32. Each weighing sensor 31 is equipped with a support plate 33 for supporting the stirring assembly 4.

[0030] In this embodiment, the weighing sensor 31 is a shear beam type weighing sensor. The bottom of the weighing sensor 31 is fixedly connected to the fixed base 1 by bolts, and the top of the weighing sensor 31 is fixedly connected to the lower edge of the mixing tank 41 by a support plate 33. Four weighing sensors 31 support the four corners of the mixing tank 41 and detect its weight in real time. The rotation of the transmission motor 51 is controlled according to the rate of decrease of the material weight in the weighing hopper to achieve the purpose of quantitative feeding. When the material in the mixing tank 41 reaches the lower limit of weighing, the transmission motor 51 increases its speed to increase the discharge volume, thus controlling the material in the mixing tank 41 to quickly fall into the material conveying cylinder 52. When the material reaches the upper limit of weighing, the transmission motor 51 stops rotating to feed, thus controlling the feeding speed of the particles.

[0031] Furthermore, the stirring assembly 4 includes a stirring box 41, a stirring motor 42, a stirring main shaft 43, and stirring blades 44. The four corners of the stirring box 41 are fixed to the weighing module 3; the stirring motor 42 is fixed to the side wall of the stirring box 41; the stirring main shaft 43 is rotatably connected to both sides of the stirring box 41 through bearings and bearing seats, and is coaxially arranged with the output shaft of the stirring motor 42; the stirring blades 44 are provided in three sets, and are evenly distributed along the circumference of the stirring main shaft 43.

[0032] In this embodiment, the stirring shaft 43 drives the stirring blades 44 to rotate, thereby turning the particles in the stirring box 41 and mixing them evenly. The three sets of stirring blades 44 are equipped with multiple sets of transverse stirring rods of equal length, and the three sets of stirring blades 44 are spaced at a certain angle to facilitate the flow of particles within the stirring box 41, increasing the uniformity of the particle raw material mixing.

[0033] Furthermore, the conveying assembly 5 includes a transmission motor 51, a material conveying cylinder 52, a conveying shaft 53, and conveying blades 54. The material conveying cylinder 52 is fixed below the mixing tank 41 and communicates with the bottom of the mixing tank 41. The transmission motor 51 is fixed to one side of the material conveying cylinder 52. The conveying shaft 53 is coaxially arranged with the output shaft of the transmission motor 51 and is rotatably connected to the material conveying cylinder 52 through bearings and bearing seats. The conveying blades 54 are evenly distributed along the circumference of the conveying shaft 53.

[0034] In this embodiment, the transmission motor 51 is a servo motor. The transmission motor 51 controls the rotation speed of the transmission motor 51 according to the signal provided by the weighing sensor 31, thereby regulating the feeding speed of the particles and ensuring the uniformity of the output.

[0035] Furthermore, a filter screen 6 is fixed at the bottom of the feeding hopper 2. The filter screen 6 is located directly above the mixing chamber 41. The filter screen 6 is square. The granular raw materials first pass through the filter screen 6 and then enter the mixing assembly 4 for mixing.

[0036] Furthermore, the material conveying cylinder 52 has a discharge port 7 at one end, with the opening direction of the discharge port 7 being vertically downward. The material in the material conveying cylinder 52 is pushed towards the discharge port 7 by the rotating conveying blades 54, and then discharged from the discharge port 7.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A granular material loading and weighing apparatus, characterised in that, The device includes a fixed base (1) and a feeding hopper (2) installed on the top of the fixed base (1). The device is characterized in that: a weighing module (3) for weighing materials is installed on the fixed base (1), a stirring component (4) is connected above the weighing module (3), the stirring component (4) is used to mix particles, and a conveying component (5) for controlling the particle feeding speed is also fixedly installed below the stirring component (4).

2. The pellet feeding and weighing device according to claim 1, characterized in that, The weighing module (3) includes four weighing sensors (31) arranged symmetrically along the fixed base (1). Each weighing sensor (31) is fixed to the middle of the fixed base (1) by a sensor fixing bracket (32). Each weighing sensor (31) is equipped with a support plate (33) for supporting the stirring assembly (4).

3. The granular material weighing and feeding device according to claim 1, wherein, The stirring assembly (4) includes a stirring box (41), a stirring motor (42), a stirring spindle (43), and multiple sets of stirring blades (44). The four corners of the stirring box (41) are fixed to the weighing module (3). The stirring motor (42) is fixed to the side wall of the stirring box (41). The stirring spindle (43) is rotatably connected to both sides of the stirring box (41) through bearings and bearing seats, and is coaxially arranged with the output shaft of the stirring motor (42). There are three sets of stirring blades (44), which are evenly distributed along the circumference of the stirring spindle (43).

4. The granular material weighing and feeding device according to claim 3, characterized in that, The conveying assembly (5) includes a transmission motor (51), a material conveying cylinder (52), a conveying shaft (53), and conveying blades (54). The material conveying cylinder (52) is fixed below the mixing tank (41) and communicates with the bottom of the mixing tank (41). The transmission motor (51) is fixed to one side of the material conveying cylinder (52). The conveying shaft (53) is coaxially arranged with the output shaft of the transmission motor (51) and is rotatably connected to the material conveying cylinder (52) through bearings and bearing seats. The conveying blades (54) are evenly distributed along the circumference of the conveying shaft (53).

5. The granular material weighing and feeding device according to claim 3, wherein, The bottom of the feeding hopper (2) is also fixed with a filter screen (6), which is located directly above the mixing tank body (41). The filter screen (6) is square.

6. The pellet feeding and weighing device according to claim 4, characterized in that, The material conveying cylinder (52) has a discharge port (7) at one end, and the opening direction of the discharge port (7) is vertically downward.

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