Powder weighing and blanking device

Abstract

The utility model discloses a powder weighing blanking device which comprises a quantitative filling component and a weighing device, the quantitative filling component comprises a bag clamping device, the bag clamping device comprises a bag clamping stock bin, the upper port of the bag clamping stock bin is a second feeding port, and the lower port of the bag clamping stock bin is a stock bin outlet; the outer wall of the outlet of the stock bin corresponds to a clamp of the bag clamping device; a quantitative filling hopper is arranged in an inner cavity of the bag clamping stock bin, an upper end opening of the quantitative filling hopper is a feeding opening, a lower end opening of the quantitative filling hopper is a discharging opening and is communicated with a transversely-arranged powder conveying cylinder, a second discharging opening is formed in the discharging end of the powder conveying cylinder, and the second discharging opening is formed in an outlet of the stock bin; and the weighing device is arranged below the outlet of the stock bin. The quantitative filling component is arranged and can be used for supplementing and feeding materials falling from the outlet of the stock bin, and the quantitative filling device is accurate in weighing, high in weighing working efficiency, simple in structure, low in cost and easy to popularize.

Description

Technical Field

[0001] This utility model relates to the field of weighing and packaging equipment technology, specifically a powder weighing and feeding device. Background Technology

[0002] Traditional powder weighing and packaging methods typically include the following two:

[0003] Manual weighing and packaging involves operators using simple weighing tools, such as balances or electronic scales, to manually weigh a certain amount of powder and then pack it into bags or containers. This method is inefficient and its accuracy is easily affected by human factors, making it only suitable for small-scale, small-volume packaging needs.

[0004] Semi-automatic weighing and packaging machines require manual input of powder into the hopper, followed by automatic weighing and dispensing into packaging bags, with manual sealing of the bags. Compared to manual weighing and packaging, this method offers improved accuracy and efficiency. However, it still relies on manual operation and is susceptible to factors such as worker fatigue and skill level, making it unsuitable for large-scale, high-volume production.

[0005] Therefore, it is necessary to design a powder weighing and unloading device to improve the accuracy and efficiency of weighing and realize production line operation. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a powder weighing and unloading device that offers precise weighing, high weighing efficiency, simple structure, and low cost.

[0007] The technical solution to achieve the purpose of this utility model is:

[0008] A powder weighing and discharging device, comprising

[0009] A quantitative filling component includes a bag clamper, which includes a bag clamping hopper. The upper port of the bag clamping hopper is a second inlet, and the lower port is a hopper outlet. The outer wall of the hopper outlet is correspondingly arranged with the clamps of the bag clamper. A quantitative filling hopper is provided in the inner cavity of the bag clamping hopper. The upper port of the quantitative filling hopper is an inlet, and the lower port is an outlet connected to a horizontally arranged powder conveying cylinder. The outlet end of the powder conveying cylinder is provided with a second outlet, which is located inside the hopper outlet to facilitate the replenishment of material through the second outlet.

[0010] A weighing device is provided below the outlet of the silo.

[0011] Preferably, the bag clamp is a pneumatic bag clamp.

[0012] Furthermore, the powder conveying cylinder includes a material cylinder, spiral blades, and a conveying screw, with the spiral blades disposed on the conveying screw; the material cylinder is arranged laterally, the conveying screw is disposed inside the material cylinder, and one end of the conveying screw is connected to the power output of the second motor;

[0013] The upper side wall of the material cylinder is connected to the lower port of the quantitative filling hopper, and a second discharge port is provided on the lower side wall of the discharge end of the material cylinder.

[0014] Furthermore, the weighing device includes a weighing conveying component; it includes a weighing sensor and a conveying device, the conveying device being disposed on the weighing surface of the weighing sensor.

[0015] Preferably, the weighing sensor is a parallel beam weighing sensor.

[0016] Furthermore, the conveying device includes a conveyor frame, a driving roller, a driven roller, a conveyor belt, and a weighing frame. The driving roller and the driven roller are respectively located at the front and rear ends of the conveyor frame. The conveyor belt surrounds and connects the driving roller and the driven roller to form a conveyor belt. The conveyor belt is located below the outlet of the hopper to facilitate placing packaging bags on the conveyor belt for receiving and transporting unloaded materials. The driving roller is connected to a third motor.

[0017] The conveyor frame is mounted on the bracket, and the bracket is fixedly connected to the weighing surface (upper end) of one end of the parallel beam load cell, while the bottom surface (fixed surface) of the other end of the parallel beam load cell is fixedly connected to the weighing frame.

[0018] Furthermore, the weighing frame is rectangular, with a crossbeam in the middle; multiple nuts are fixed on both sides of the weighing frame, each nut being screwed to an adjusting screw, and the weighing frame is supported by the adjusting screw;

[0019] The bottom surface of the other end of the parallel beam load cell is fixed on the crossbeam.

[0020] Furthermore, it includes a discharge device, which includes a body and an impeller disposed within the body. The rotating shaft of the impeller is arranged laterally and connected to the rotating shaft of the first motor. The upper part of the impeller is the first feed inlet of the body, and the lower part of the impeller is the first discharge outlet of the body.

[0021] The first discharge port of the unloader is connected to the second inlet of the quantitative filling component.

[0022] Furthermore, it includes a cyclone separator, the discharge port of which is connected to the first inlet of the unloader.

[0023] By rotating the adjusting screw to set different weighing frame heights, the height of the conveyor belt can be adjusted according to different work needs to accommodate packaging bags of different lengths. This can improve work efficiency, adapt to different packaging requirements, save space, and facilitate operation. At the same time, the conveyor belt can be raised to a suitable height to facilitate conveyor belt maintenance and cleaning, reduce the difficulty of conveyor belt maintenance and cleaning, and extend the service life of the conveyor belt.

[0024] During operation, the bag opening is placed over the hopper outlet, and the bag clamp is used to secure the bag to the outer wall of the hopper outlet. The powder material separated by the cyclone separator enters the first inlet of the unloader. The controller controls the first motor to rotate, driving the impeller inside the unloader. The material is carried by the rotating impeller to the first outlet, from which it enters the second inlet and the quantitative filling hopper. From the second inlet, the material enters the bag clamping hopper and then from the hopper outlet into the bag. Because the bag opening is placed over the hopper outlet, the bag naturally hangs vertically, directly or indirectly... The weighing and conveying components are in contact. The weight of the material before it falls into the packaging bag is known through the measurement of a load cell. When the material falls into the bag, the weight sensor can obtain the weight of the falling material. If the weight of the falling material does not reach the preset value, the quantitative filling component is activated. The material in the quantitative filling hopper is conveyed through the powder conveying cylinder to the second discharge port located in the hopper outlet. The material is then added to the packaging bag from the second discharge port until the weight in the bag reaches the preset value. This reduces weighing errors and improves the accuracy of material weighing. When the weight of the material in the packaging bag reaches the preset value, the controller stops the first motor of the unloader and the second motor of the quantitative filling component. The controller also controls the bag clamp to release the packaging bag. Simultaneously, the controller controls the conveyor belt to transport the weighed packaging bag to the next process. This device, by incorporating the quantitative filling component, can replenish the material falling from the hopper outlet, thereby achieving precise quantitative weighing of materials. It is easy to operate and use.

[0025] Therefore, this utility model has the advantages of accurate weighing, high weighing efficiency, simple structure, and low cost. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the unloader structure according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the quantitative packing component structure according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the quantitative filler component according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the weighing and conveying component structure according to an embodiment of the present utility model;

[0031] Figure 6 for Figure 5 Enlarged diagram of section A in the middle;

[0032] Figure 7 This is a schematic diagram of the connection block of the controller of the powder weighing and feeding device according to an embodiment of the present utility model.

[0033] In the picture,

[0034] 1. Cyclone separator;

[0035] 2. Unloader; 2-1. First feed inlet; 2-2. Rotating shaft; 2-3. Impeller; 2-4. First discharge outlet;

[0036] 3. Quantitative filling components; 3-1. Quantitative filling hopper; 3-2. Second feed inlet; 3-3. Pneumatic bag clamp; 3-4. Bag clamping hopper; 3-5. Hopper outlet; 3-6. Clamp; 3-101. Second motor; 3-102. Spiral blades; 3-103. Screw; 3-104. Material cylinder; 3-105. Second discharge outlet;

[0037] 4. Weighing and conveying components; 4-1. Third motor; 4-2. Conveyor frame; 4-3. Driven roller; 4-4. Driven roller; 4-5. Conveyor belt; 4-6. Weighing frame; 4-7. Adjusting screw; 4-8. Nut; 4-9. Weighing sensor; 4-10. Bracket; 4-11. Crossbeam. Detailed Implementation

[0038] The present invention will be further described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention. Example

[0039] like Figures 1-7 As shown, a powder weighing and discharging device includes...

[0040] The metering filling component 3 includes a pneumatic bag clamp 3-3, which includes a bag clamping hopper 3-4. The upper port of the bag clamping hopper 3-4 is a second inlet 3-2, and the lower port is a hopper outlet 3-5. The outer wall of the hopper outlet 3-5 is correspondingly arranged with the clamps 3-6 of the pneumatic bag clamp 3-3. A metering filling hopper 3-1 is provided in the inner cavity of the bag clamping hopper 3-4. The upper port of the metering filling hopper 3-1 is an inlet, and the lower port is an outlet, which communicates with a horizontally arranged powder conveying cylinder. The discharge end is provided with a second discharge port 3-105, which is located inside the hopper outlet 3-5. In use, the bag opening is fitted onto the outer wall of the lower port of the hopper outlet 3-5. The lower port of the hopper outlet 3-5 cooperates with the clamp 3-6 of the pneumatic bag clamp 3-3 to fix the bag opening to the outer wall of the hopper outlet 3-5. One outer wall of the quantitative filling hopper 3-1 is attached to one inner wall of the bag clamping hopper 3-4 to reduce the impact on the falling material and to facilitate fixation within the inner cavity of the bag clamping hopper 3-4. Figure 3 Figure 4 As shown;

[0041] A weighing device is provided below the outlet 3-5 of the silo.

[0042] like Figure 4 As shown, the powder conveying cylinder includes a material cylinder 3-104, a spiral blade 3-102, and a conveying screw 3-103. The spiral blade 3-102 is disposed on the conveying screw 3-103. The material cylinder 3-104 is arranged horizontally, and the conveying screw 3-103 is disposed inside the material cylinder 3-104. One end of the conveying screw 3-103 is connected to the power output of the second motor 3-101.

[0043] The upper side wall of the material cylinder 3-104 is connected to the lower port of the quantitative filling hopper 3-1, and the lower side wall of the discharge end of the material cylinder 3-104 is provided with a second discharge port 3-105.

[0044] like Figure 5 Figure 6 As shown, the weighing device includes a weighing conveying component 4; it includes a weighing sensor 4-9 and a conveying device, the conveying device being disposed on the weighing surface of the weighing sensor 4-9;

[0045] like Figure 6 As shown, the weighing sensor 4-9 is a parallel beam weighing sensor.

[0046] like Figure 5 Figure 6As shown, the conveying device includes a conveyor frame 4-2, a driving roller 4-3, a driven roller 4-4, a conveyor belt 4-5, and a weighing frame 4-6. The driving roller 4-3 and the driven roller 4-4 are respectively located at the front and rear ends of the conveyor frame 4-2. The conveyor belt 4-5 surrounds and connects the driving roller 4-3 and the driven roller 4-4 to form a conveyor belt. The conveyor belt is located below the hopper outlet 3-5. During operation, the packaging bag is placed on the conveyor belt. The driving roller 4-3 is connected to a third motor 4-1.

[0047] The conveyor frame 4-2 is mounted on the bracket 4-10. The bracket 4-10 is fixedly connected to the weighing surface (upper end) of one end of the parallel beam load cell, and the bottom surface (fixed surface) of the other end of the parallel beam load cell is fixedly connected to the weighing frame 4-6.

[0048] like Figure 5 Figure 6 As shown, the weighing frame 4-6 is rectangular, with a crossbeam 4-11 in the middle; multiple nuts 4-8 are fixed on both sides of the weighing frame 4-6, and each nut 4-8 is screwed to an adjusting screw 4-7. The weighing frame 4-6 is supported by the adjusting screw 4-7 and bears the weight on the ground.

[0049] The bottom surface of the other end of the parallel beam load cell is fixed on the crossbeam 4-11.

[0050] By rotating the adjusting screw 4-7, different weighing frame 4-6 heights can be set, and the height of the conveyor belt can be adjusted according to different work requirements to accommodate packaging bags of different lengths. At the same time, when maintaining and cleaning the conveyor belt, it can be easily lowered or raised to a suitable height.

[0051] The device includes a discharger 2, which comprises a body and an impeller 2-3 disposed within the body. The rotating shaft 2-2 of the impeller 2-3 is horizontally positioned and connected to the rotating shaft of a first motor. The upper part of the impeller 2-3 is the first feed inlet 2-1 of the body, and the lower part of the impeller 2-3 is the first discharge outlet 2-4 of the body. Figure 2 As shown; the first discharge port 2-4 of the unloader 2 is connected to the second inlet 3-2 of the metering filler component 3, as shown. Figure 1 As shown.

[0052] like Figure 1 As shown, the device includes a cyclone separator 1, the outlet of which is connected to the first inlet 2-1 of the unloader 2. The cyclone separator 1 is used to separate powdered materials and output them through its outlet to the first inlet 2-1 of the unloader 2.

[0053] like Figure 7As shown, the system includes a controller, which includes a main control module and an input module and an output module electrically connected thereto; the weighing sensor 4-9 is electrically connected to the main control module through the input module; the pneumatic bag clamp 3-3 is electrically connected to the output module; a motor driver is provided and is electrically connected to the output module; the motor driver is electrically connected to the first motor, the second motor 3-101, and the third motor 4-1.

[0054] The main control module is a PLC, which is powered by a power supply module.

[0055] During operation, the bag opening is placed over the hopper outlet 3-5 and clamped by the pneumatic bag clamp 3-3. The powder material separated by the cyclone separator 1 enters the first feed inlet 2-1 of the unloader 2. The controller controls the first motor to rotate, driving the impeller 2-3 inside the unloader 2 to rotate. The material is carried by the rotating impeller 2-3 to the first discharge outlet 2-4. The material enters the second feed inlet 3-2 and the quantitative filling hopper 3-1 from the first discharge outlet 2-4. The material enters the bag clamping hopper 3-4 from the second feed inlet 3-2 and then enters the bag from the hopper outlet 3-5. Because the bag opening is placed over the hopper outlet 3-5, the bag naturally hangs vertically or indirectly. The material is in contact with the weighing and conveying component 4. The weight of the material before it falls into the packaging bag is known by the weighing sensor. When the material falls into the packaging bag, the weight of the falling material can be obtained by the weight sensor 4-9. When the weight of the falling material does not reach the preset value, the second motor 3-101 of the quantitative filling component 3 is activated to transport the material in the quantitative filling hopper 3-1 to the second discharge port 3-105 set in the hopper outlet 3-5 through the powder conveying cylinder. The material is then added into the packaging bag from the second discharge port 3-105 so that the material in the packaging bag reaches the preset value. This reduces the error generated during weighing and improves the accuracy of weighing the material. When the weight of the material inside the packaging bag reaches the preset value, the controller controls the first motor of the unloader 2 and the second motor 3-101 of the quantitative filling component 3 to stop working. The controller controls the pneumatic bag clamp 3-3 to release the packaging bag through the output module, so that the packaging bag leaves the hopper outlet 3-5 and falls completely onto the conveyor belt. At the same time, the controller controls the third motor 4-1 to rotate through the output module to drive the conveyor belt to transport the weighed packaging bag to the next process.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder weighing and dispensing device, characterized in that, include A quantitative filling component includes a bag clamper, which includes a bag clamping hopper. The upper port of the bag clamping hopper is a second inlet, and the lower port is a hopper outlet. The outer wall of the hopper outlet is correspondingly provided with the clamps of the bag clamper. A quantitative filling hopper is provided in the inner cavity of the bag clamping hopper. The upper port of the quantitative filling hopper is an inlet, and the lower port is an outlet connected to a horizontally arranged powder conveying cylinder. The outlet end of the powder conveying cylinder is provided with a second outlet, which is located inside the hopper outlet. A weighing device is provided below the outlet of the silo.

2. The powder weighing and discharging device according to claim 1, characterized in that, The powder conveying cylinder includes a material cylinder, spiral blades, and a conveying screw. The spiral blades are disposed on the conveying screw. The material cylinder is arranged horizontally, and the conveying screw is disposed inside the material cylinder. One end of the conveying screw is connected to the power output of a second motor. The upper side wall of the material cylinder is connected to the lower port of the quantitative filling hopper, and a second discharge port is provided on the lower side wall of the discharge end of the material cylinder.

3. The powder weighing and discharging device according to claim 1, characterized in that, The weighing device includes a weighing conveying component; it includes a weighing sensor and a conveying device, wherein the conveying device is disposed on the weighing surface of the weighing sensor.

4. The powder weighing and discharging device according to claim 3, characterized in that, The weighing sensor mentioned is a parallel beam weighing sensor.

5. A powder weighing and discharging device according to claim 4, characterized in that, The conveying device includes a conveyor frame, a driving roller, a driven roller, a conveyor belt, and a weighing frame. The driving roller and the driven roller are respectively located at the front end and rear end of the conveyor frame. The conveyor belt surrounds and connects the driving roller and the driven roller to form a conveyor belt. The conveyor belt is located below the outlet of the hopper. The driving roller is connected to a third motor. The conveyor frame is mounted on the bracket, and the bracket is fixedly connected to the weighing surface (upper end) of one end of the parallel beam load cell, while the bottom surface of the other end of the parallel beam load cell is fixedly connected to the weighing frame.

6. A powder weighing and discharging device according to claim 5, characterized in that, The weighing frame is rectangular with a crossbeam in the middle; multiple nuts are fixed on both sides of the weighing frame, and each nut is screwed to an adjusting screw, and the weighing frame is supported by the adjusting screw; The bottom surface of the other end of the parallel beam load cell is fixed on the crossbeam.

7. A powder weighing and discharging device according to claim 1, characterized in that, One outer wall of the quantitative filling hopper is attached to one inner wall of the bag hopper.

8. A powder weighing and discharging device according to claim 1, characterized in that, The device includes a discharge device, which comprises a body and an impeller disposed within the body. The rotating shaft of the impeller is arranged horizontally and connected to the rotating shaft of a first motor. The upper part of the impeller is the first feed inlet of the body, and the lower part of the impeller is the first discharge outlet of the body. The first discharge port of the unloader is connected to the second inlet of the quantitative filling component.

9. A powder weighing and discharging device according to claim 8, characterized in that, It includes a cyclone separator, the discharge port of which is connected to the first inlet of the unloader.

Images