Powder dosing machine

Abstract

The utility model discloses a kind of powder quantitative feeding machines, belong to powder feeding technical field, to solve the problems such as low automation of existing equipment, high energy consumption, residual leakage etc. It includes material box, weighing device, push plate and baffle, and the weighing device, push plate and baffle form bin by enclosing;Weighing device contains weighing module and jacking cylinder, and push plate is driven by cylinder and is the middle layer slidable three-layer structure. Device realizes feeding, weighing, push plate whole-process automation by linkage control, discards screw conveyor and reduces energy consumption, and push plate and sealing structure reduce material residual and leakage, and degree of automation is high and can effectively avoid cross contamination.

Description

Technical Field

[0001] This utility model belongs to the field of powder feeding technology, and specifically relates to a powder quantitative feeder. Background Technology

[0002] Powder metering technology is a core technology that uses a combination of mechanical structures and control units to precisely deliver various powder materials to the target process at preset dosages. It is a key link connecting powder storage and production processing. Its applications have penetrated into many fields: in the food industry, it is used for the precise proportioning of flour and additives; in the pharmaceutical industry, it controls the micro-dosage of pharmaceutical powders; in the chemical industry, it enables the quantitative supply of pigments and additives; and in the building materials industry, it ensures a stable supply of cement and paint powders.

[0003] Current mainstream equipment suffers from significant shortcomings: low automation levels lead to reliance on manual parameter setting and monitoring, resulting in sluggish responses when handling multi-batch, variable-dosage production, and susceptibility to product consistency issues due to human error. Particularly concerning is the high energy consumption of screw conveyor-based feeding equipment, leading to persistently high operating costs. Furthermore, the powder's tendency to adsorb and clump results in significant residue buildup on the equipment's inner walls and conveyor screws, causing material waste and cross-contamination of subsequent materials. Inadequate sealing designs also frequently lead to leaks. This residue not only wastes materials but also contaminates the production environment. The combined risk of cross-contamination poses a significant threat to industries with stringent hygiene requirements, such as food and pharmaceuticals, making technological upgrades imperative. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above deficiencies, the purpose of this utility model is to provide a powder quantitative feeder, which aims to solve the above technical problems.

[0005] Technical solution: To achieve the above objectives, this utility model provides a powder metering feeder, comprising: The material box has an inlet and an outlet at its upper and lower ends, respectively. A weighing device is located at the bottom of the material box; a pusher plate is located on the left side of the material box and can slide back and forth on the weighing device; a first baffle plate is rotatably provided on the right side of the material box, and a second baffle plate is rotatably provided on the right side of the weighing device, which is opposite to the position of the first baffle plate. The weighing device, pusher plate, first baffle plate and second baffle plate are arranged together to form a hopper.

[0006] Furthermore, a pushing cylinder is connected to the left side of the pushing plate. The pushing cylinder is located on the left end face of the material box and its piston rod passes through the material box and is connected to the pushing plate. The pusher plate is also provided with a guide rod and a limiting rod on its left side, and both the guide rod and the limiting rod pass through the material box through a bushing; The pusher plate has a three-layer structure, and the middle plate can slide freely between the upper and lower plates.

[0007] Through the above technical solution, the powder material enters the material box from the feed inlet, and the material falls into the hopper formed by the weighing device, the pusher plate, the first baffle plate and the second baffle plate. After the weighing device weighs the material to the standard, the feed inlet stops feeding, the second baffle plate rotates to open the hopper, and the pusher cylinder drives the pusher plate to push the powder material on the weighing device to the discharge port, thereby realizing the quantitative feeding of powder.

[0008] Furthermore, the weighing device includes a base plate disposed on the material box, a weighing module disposed on the base plate, a top plate disposed on the weighing module, a guide column disposed between the top plate and the base plate, and a lifting cylinder disposed at the center of the base plate.

[0009] Furthermore, the weighing module includes an upper plate and a lower plate, which are connected by a weighing sensor; The upper plate has U-shaped grooves on both sides, and the lower plate has limiting posts on both sides. The upper part of the limiting posts is located in the U-shaped grooves and is fitted with limiting nuts.

[0010] Furthermore, the feed inlet is equipped with a butterfly valve, the discharge outlet is equipped with a gate, and the gate is connected to a gate cylinder.

[0011] Furthermore, a discharge hopper is provided at the lower part of the discharge port, and a discharge sealing plate is connected to the bottom of the discharge hopper. A sealing gasket is provided around the discharge sealing plate. The discharge hopper and the discharge sealing plate are connected by a corrugated pipe with a smooth inner wall. Cylinders are provided on both sides of the discharge hopper, and the other side of the cylinder is connected to the discharge sealing plate.

[0012] Furthermore, it also includes a receiving assembly, which includes a roller line body, multiple receiving boxes slidably disposed on the roller line body in series, the receiving boxes having an opening at the top, and a pneumatic push rod for pushing the receiving box to move on the left side.

[0013] Furthermore, the first baffle plate is mounted on the top of the material box via a hinge, and the second baffle plate is connected to a rotating shaft, which is driven by a motor to rotate. The motor is located on the outside of the material box.

[0014] As can be seen from the above technical solution, this utility model has the following beneficial effects: 1. Improve automation level: By linking and controlling components such as butterfly valves and cylinders, the entire process of feeding, weighing, pushing and receiving is automated, eliminating the need for frequent manual settings and monitoring. This allows for faster response to multiple batches of variable dosage production and ensures product consistency.

[0015] 2. Reduce energy consumption costs by abandoning the traditional screw conveyor structure and using the gravity of the material in conjunction with the pushing mechanism to complete the conveying, which significantly reduces operating energy consumption.

[0016] 3. To solve the problems of residue and leakage, the pusher plate is closely fitted with the weighing device, the inner wall of the corrugated pipe is smooth, and the multi-seal structure design reduces material residue and leakage, avoids waste and cross-contamination, and meets the hygiene requirements of the food and pharmaceutical industries. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a powder metering feeder according to the present invention; Figure 2 This is a cross-sectional view of a powder metering feeder according to the present invention; Figure 3 This is a structural schematic diagram of the weighing module described in this utility model.

[0018] In the picture: 1-Material box, 2-Weighing device, 21-Base plate, 22-Weighing module, 221-Upper plate, 222-Lower plate, 223-Weighing sensor, 224-Limiting post, 23-Top plate, 24-Lifting cylinder, 3-Pushing plate, 4-First baffle plate, 5-Second baffle plate, 6-Pushing cylinder, 7-Guide rod, 8-Limiting rod, 9-Butterfly valve, 10-Gate, 11-Gate cylinder, 12-Hopper, 13-Discharge sealing plate, 14-Cylinder, 15-Roller line, 16-Receiving box, 17-Pneumatic push rod. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In this embodiment, as Figures 1 to 3 This utility model discloses a powder metering feeder, comprising: Material box 1, wherein the upper and lower ends of the material box 1 are respectively provided with a material inlet and a material outlet; Weighing device 2, which is located at the bottom of the material box 1; pusher plate 3, which is located on the left side of the material box 1 and can slide back and forth on the weighing device 2; a first baffle plate 4 is rotatably provided on the right side of the material box 1, and a second baffle plate 5 is rotatably provided on the right side of the weighing device 2, which is opposite to the position of the first baffle plate 4. The weighing device 2, the pusher plate 3, the first baffle plate 4, and the second baffle plate 5 together form a hopper.

[0021] The pusher plate 3 is connected to a pusher cylinder 6 on its left side. The pusher cylinder 6 is located on the left end face of the material box 1 and its piston rod passes through the material box 1 and is connected to the pusher plate 3. The pusher plate 3 is also provided with a guide rod 7 and a limiting rod 8 on the left side. Both the guide rod 7 and the limiting rod 8 pass through the material box 1 through a bushing. The pusher plate 3 has a three-layer structure, and the middle plate can slide freely between the upper and lower plates.

[0022] Driven by the pushing cylinder 6, the pusher plate 3 can push all the material on the weighing device 2 to the discharge port to avoid material residue. During the movement, the pusher plate 3 is guided by the guide rod 7 and the limit rod 8 limits its maximum movement distance. The middle plate in the pusher plate 3 can slide freely. When the weighing device 2 moves down due to increased weight, the middle plate on the pusher plate 3 will always be in contact with the weighing device 2 as it falls to prevent powder from escaping from the pusher plate 3 and prevent leakage.

[0023] In a preferred embodiment, the weighing device 2 includes a base plate 21 disposed on the material box 1, a weighing module 22 disposed on the base plate 21, a top plate 23 disposed on the weighing module 22, a guide post disposed between the top plate 23 and the base plate 21, and a lifting cylinder 24 disposed at the center of the base plate 21. The weighing module 22 includes an upper plate 221 and a lower plate 222, which are connected by a weighing sensor 223. The upper plate 221 has U-shaped grooves on both sides, and the lower plate 222 has limiting posts 224 on both sides. The upper part of the limiting posts 224 is located in the U-shaped groove and is fitted with a limiting nut.

[0024] After the weighing sensor 223 reaches the required value, the lifting cylinder 24 pneumatically lifts the top plate 23, and the top plate 23 moves together with the upper plate 221. The upper plate 221 stops after moving to its limit position. At this time, the top plate 23 is in close contact with the bottom of the pusher plate 3.

[0025] Specifically, the feed inlet is equipped with a butterfly valve 9, the discharge outlet is equipped with a gate 10, and the gate 10 is connected to a gate cylinder 11. In this embodiment, the butterfly valve 9 is an electromagnetic butterfly valve.

[0026] Preferably, a discharge hopper 12 is provided at the lower part of the discharge port, and a discharge sealing plate 13 is connected to the bottom of the discharge hopper 12. A sealing gasket is provided around the discharge sealing plate 13. The discharge hopper 12 and the discharge sealing plate 13 are connected by a corrugated pipe with a smooth inner wall. Cylinders 14 are provided on both sides of the discharge hopper 12, and the other side of the cylinder 14 is connected to the discharge sealing plate 13.

[0027] The corrugated pipe with a smooth inner wall has a certain degree of extensibility, and its smooth inner wall will not leave any material residue. The cylinder 14 can drive the discharge sealing plate 13 to move up and down to dock with the receiving component. The sealing gasket around the discharge sealing plate 13 can effectively prevent material leakage.

[0028] A further optimized solution also includes a receiving assembly, which includes a roller line 15 and multiple receiving boxes 16 connected in series and slidably disposed on the roller line 15. The receiving boxes 16 have an opening at the top and a pneumatic push rod 17 for pushing them to move is provided on the left side of the receiving box 16.

[0029] The pneumatic push rod 17 pushes the receiving load 16 to the bottom of the discharge sealing plate 13 to dock with it, and multiple receiving boxes 16 realize the cyclic receiving of materials.

[0030] Specifically, the first baffle plate 4 is mounted on top of the material box 1 via a hinge, and the second baffle plate 5 is connected to a rotating shaft, which is driven to rotate by a motor 18 located on the outside of the material box 1.

[0031] The working principle of the powder metering feeder described in this embodiment is as follows: The feeder is controlled by a PLC. During feeding, the butterfly valve 9 is opened, and the powder material falls into the hopper from the feed inlet. The hopper is located inside the material box 1. At the same time, the sliding middle plate of the pusher plate 3 is always in contact with the top plate 23, which serves as the bottom of the hopper. The first baffle plate 4 and the second baffle plate 5 block the material. The hopper serves as the first protective structure, and the external material box serves as the second protective structure to prevent material leakage. During the feeding process, the cylinder 14 drives the discharge sealing plate 13 to dock with the receiving box 16. After the material is weighed by the weighing device 2, the PLC receives the information and immediately closes the butterfly valve 9 to stop feeding. Although this method has a very small lag and the weight may have a slight error, the error is within the allowable range. At the same time as feeding stops, the motor 18 drives the second baffle plate 5 to rotate, the gate cylinder 11 controls the gate 10 to open, and the pusher cylinder 6 drives the pusher plate 3 to push all the material into the discharge port. The material passes through the discharge port and reaches the receiving box. Then the pusher plate 3 returns to its position, the gate 10 closes, the butterfly valve 9 opens for secondary feeding, and the pneumatic push rod 17 pushes the empty receiving box 16 to connect with the discharge sealing plate 13 below it, and so on.

[0032] This invention eliminates the screw conveyor feeding method and sets up a pusher plate to effectively avoid the residue of powder materials. It mainly utilizes the gravity characteristics of the material itself to complete the feeding, resulting in low energy consumption. At the same time, the design of the hopper and discharge port makes it difficult for materials to leak. The entire device can realize fully automatic quantitative feeding and has a high degree of automation.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A powder metering feeder, characterized in that: include: Material box (1), the upper and lower ends of the material box (1) are respectively provided with a material inlet and a material outlet; Weighing device (2), the weighing device (2) is located at the bottom of the material box (1); pusher plate (3), the pusher plate (3) is located on the left side of the material box (1) and can slide back and forth on the weighing device (2); a first baffle plate (4) is rotatably provided on the right side of the material box (1), and a second baffle plate (5) is rotatably provided on the right side of the weighing device (2) opposite to the position of the first baffle plate (4); The weighing device (2), the pusher plate (3), the first baffle plate (4) and the second baffle plate (5) together form a hopper.

2. The powder metering feeder according to claim 1, characterized in that: A pusher cylinder (6) is connected to the left side of the pusher plate (3). The pusher cylinder (6) is located on the left end face of the material box (1) and its piston rod passes through the material box (1) and is connected to the pusher plate (3). The pusher plate (3) is also provided with a guide rod (7) and a limiting rod (8) on the left side. The guide rod (7) and the limiting rod (8) both pass through the material box (1) through the bushing. The pusher plate (3) has a three-layer plate structure, and the middle plate can slide freely between the upper and lower plates.

3. The powder metering feeder according to claim 1, characterized in that: The weighing device (2) includes a base plate (21) on the material box (1), a weighing module (22) on the base plate (21), a top plate (23) on the weighing module (22), a guide column between the top plate (23) and the base plate (21), and a lifting cylinder (24) at the center of the base plate (21).

4. A powder metering feeder according to claim 3, characterized in that: The weighing module (22) includes an upper plate (221) and a lower plate (222), and the upper plate (221) and the lower plate (222) are connected by a weighing sensor (223); The upper plate (221) has U-shaped grooves on both sides, and the lower plate (222) has limiting posts (224) on both sides. The upper part of the limiting posts (224) is located in the U-shaped groove and is fitted with a limiting nut.

5. A powder metering feeder according to claim 1, characterized in that: The feed inlet is equipped with a butterfly valve (9), the discharge outlet is equipped with a gate (10), and the gate (10) is connected to a gate cylinder (11).

6. A powder metering feeder according to claim 1, characterized in that: The lower part of the discharge port is also provided with a discharge hopper (12), and the bottom of the discharge hopper (12) is connected to a discharge sealing plate (13), and the discharge sealing plate (13) is provided with sealing gaskets around its perimeter. The discharge hopper (12) and the discharge sealing plate (13) are connected by a corrugated pipe with a smooth inner wall. Cylinders (14) are provided on both sides of the discharge hopper (12), and the other side of the cylinder (14) is connected to the discharge sealing plate (13).

7. A powder metering feeder according to claim 6, characterized in that: It also includes a receiving assembly, which includes a roller line (15) and multiple receiving boxes (16) connected in series on the roller line (15). The receiving boxes (16) have an opening at the top and a pneumatic push rod (17) for pushing them to move is provided on the left side of the receiving box (16).

8. A powder metering feeder according to claim 1, characterized in that: The first baffle plate (4) is mounted on the top of the material box (1) via a hinge. The second baffle plate (5) is connected to a rotating shaft, which is driven to rotate by a motor (18). The motor (18) is located on the outside of the material box (1).

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