Powder material quantitative conveying device

Abstract

The utility model provides a powder material quantitative conveying device which comprises a conveying belt machine frame assembly and a material storage tower used for storing materials, the material storage tower comprises a material storage bin on the upper portion and a discharging port on the lower portion, and the conveying belt machine frame assembly comprises a machine body and a belt body arranged on the machine body. The machine body is fixedly connected with side baffles located on the two sides of the belt body, quantitative partition plates are movably connected in the length direction of the belt body at equal intervals, and the upper end faces of the quantitative partition plates abut against the discharging port. The stirring roller is rotationally arranged in the discharging port to crush blocky powder materials, and the quantitative partition plate and the side baffle form the storage space with the fixed volume, so that it is guaranteed that the volume of the powder materials can be quantitatively treated through the quantitative plate when the powder materials are placed on the belt body. Functional parts of the device have the advantages of being simple in structure, convenient to use and low in setting cost.

Description

Technical Field

[0001] The utility model relates to the technical field of constant - feeding machines, in particular to a quantitative conveying device for powder materials. Background Art

[0002] A constant - feeding machine is a mechanical device for continuous weighing and metering and quantitative conveying of solid bulk materials. It is widely used in industries such as cement, mines, building materials, grain, and chemicals. It is known for its advanced technology, stable reliability, high cost - performance, and durability. It is a high - tech product integrating conveying, weighing and metering, and quantitative control. Among them, there is a coal feeder for quantitatively conveying raw coal to a coal mill. The existing coal feeder has the following deficiencies in the use process: First, since pulverized coal is prone to caking due to moisture, the feeding and weighing are unstable, and the metering accuracy is poor; Second, an electronic belt scale is installed under the conveying and metering belt. A signal proportional to the weight of coal generated by a weighing sensor and a belt speed signal detected by a speed sensor are sent to an integrator at the same time. After integration, the instantaneous flow rate and cumulative amount of the material are obtained, and the coal feeding amount is controlled by controlling the running speed of the belt. In actual use, for quantitative feeding equipment, its structure is generally relatively complex, and the mechanical manufacturing cost investment is high. Content of the Utility Model

[0003] The purpose of the utility model is to solve the technical problems of metering deviation caused by material caking and high cost caused by complex body structure in the existing constant - feeding machines, and to provide a constant - feeding machine with a simple structure, convenient use and capable of crushing lumpy powder materials.

[0004] To solve the above - mentioned technical problems, the utility model provides a quantitative conveying device for powder materials. The quantitative conveying device for powder materials includes a conveyor belt frame assembly and a storage tower for storing materials. The storage tower includes a storage bin at the upper part and a discharge port at the lower part. A stirring roller for crushing lumpy powder is rotatably arranged in the discharge port. The conveyor belt frame assembly includes a machine body and a belt arranged on the machine body. Side baffles are fixedly connected to the machine body on both sides of the belt. Quantitative partitions are movably connected at equal intervals along the length direction of the belt, and the upper end surfaces of the quantitative partitions are abutted against the discharge port.

[0005] In a preferred embodiment: The stirring roller includes a rotating shaft penetrating and pivoted in the discharge port, stirring blades fixed on the circumferential side wall surface of the rotating shaft, and a driving mechanism for driving the rotation of the rotating shaft.

[0006] In a preferred embodiment: There are at least two stirring rollers, and they are arranged staggeredly along the same horizontal direction, and adjacent stirring blades are meshed and intersected.

[0007] In a preferred embodiment: The driving mechanism includes a motor for driving the rotating shaft to move around its axis and change its rotational speed, a motor speed regulating device for controlling the rotational speed of the motor, and a speed detection device for detecting the rotational speed of the rotating shaft; The motor is fixed on the storage tower, and its output shaft is fixedly connected to the rotating shaft, and the motor speed regulating device is electrically connected to the motor.

[0008] In a preferred embodiment: The belt body is evenly distributed with limit card slots, and the quantitative partition board is detachably fixed on the limit card slots.

[0009] In a preferred embodiment: The lower parts of the two opposite sides of the discharge port are correspondingly located inside two side baffles.

[0010] Compared with the prior art, the technical solution of the present utility model has the following beneficial effects:

[0011] The present utility model provides a powder material quantitative conveying device, which rotates and arranges a stirring roller in the discharge port to break up bulk powder materials, and side baffles are arranged on both sides of the conveyor belt. Quantitative partition boards are movably installed at equal intervals along the length direction of the belt body to form a storage space with a fixed volume. When the powder materials are placed on the belt body, the volume of the powder materials can be quantitatively processed through the quantitative board. The components of the device of the present utility model have a simple structure, and have the advantages of convenient use and low setting cost. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the working state of the device of the present utility model;

[0013] Figure 2 is a schematic diagram of the arrangement of the stirring rollers of the device of the present utility model. Detailed Embodiments

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0015] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0016] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be wall-mounted connection, detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, or can be indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0017] Currently, when transporting powder materials during production and operation, commonly used ones include screw conveyors and belt conveyors. These conveyors generally rely on the feeding port to feed the materials onto the screw conveyor or belt conveyor for further transportation. Among them, since the screw conveyor uses screw feeding blades to transport the materials, the materials are not prone to sliding displacement, its feeding speed is uniform, and it is less affected by the feeding speed of the feeding port. It can achieve a certain degree of quantitative feeding by controlling the movement process of the screw. However, the screw conveyor is usually only used for short-distance material transportation. When it comes to long-distance material transportation, a belt conveyor is usually required. When using a traditional belt conveyor to transport materials, it is greatly affected by the sliding displacement of the materials, the feeding speed is uneven, and it is greatly affected by the feeding speed of the feeding port. In order to make the belt conveyor have a certain quantitative function, usually, a uniform feeding treatment is carried out on the feeding port, such as installing a quantitative feeding structure, a weighing feeding structure, etc. at the feeding port. Or an electronic belt scale is installed under the belt. An electrical signal proportional to the weight of the powder material generated by a weighing sensor and the belt speed signal detected by a speed sensor are simultaneously sent to an integrator. After integration, the instantaneous flow rate and cumulative amount of the material are obtained, and then the material amount is controlled by controlling the running speed of the belt. However, in actual use, for quantitative feeding equipment, whether a quantitative feeding structure is installed at the unknown feeding port or a sensing control structure is installed under the belt will make the overall conveying device structure more complex and increase the investment in mechanical manufacturing costs. Moreover, for powder materials such as pulverized coal that are prone to agglomeration due to moisture absorption, the above structures may have application limitations such as poor measurement accuracy due to unstable state of the measurement medium in the feeding and weighing links. Therefore, there is a need for a material metering feeder with a simple structure, convenient use and capable of crushing lumpy powder to meet the technical requirements of quantitative transportation of powder materials.

[0018] Reference Figure 1-2, this embodiment provides a powder material quantitative conveying device, including a conveyor belt frame assembly 21 and a storage tower for storing materials. The storage tower includes a storage bin 11 at the upper part and a discharge port 12 at the lower part. A stirring roller 13 for crushing lumpy powder is rotatably arranged in the discharge port 12. The conveyor belt frame assembly 21 includes a machine body 211 and a belt 212 arranged on the machine body. Side baffles 213 are fixedly connected to the machine body 211 on both sides of the belt 212. Quantitative partitions 214 are movably connected at equal intervals along the length direction of the belt 212. The quantitative partitions 214 cooperate with the side baffles 213 on both sides to form a storage space with a fixed volume. The lower parts of the two opposite sides of the discharge port 12 are correspondingly located inside the two side baffles 213. The discharge port 12 discharges materials onto the belt 212. After the powder material fills the storage space, through the movement of the belt 212, the bottom edge side wall of the discharge port 12 abutting against the upper end surface of the quantitative partition 214 levels and tidies up the powder material exceeding the height of the storage space, that is, performs quantitative processing of the calibrated volume of the material. Through the setting of the quantitative partition 214 and the side baffle 213 and the leveling of the discharge port 12, the belt conveyor has a quantitative function, which not only has a simple structure, low equipment setting cost, but also is easy to use. In addition, since the quantitative partition 214 is detachably fixed on the belt 212 through the limit card slots evenly distributed on the belt 212, in actual use, users can change the volume of the storage space formed by the quantitative partition 214 and the side baffle 213 by adjusting the setting distance between the quantitative partitions 214 to improve the universality of the device.

[0019] Based on the technology of how to solve the problem that powder materials are prone to moisture absorption and caking, resulting in poor quantitative measurement accuracy, in this embodiment, a stirring roller 13 for crushing lumpy powder is rotatably arranged in the discharge port 12. The stirring roller 13 includes a rotating shaft 132 penetrating and pivoting in the discharge port, stirring blades 133 fixed on the circumferential side wall surface of the rotating shaft 132, and a driving mechanism 133 for driving the rotating shaft 132 to rotate. Specifically, the driving mechanism 133 includes a motor for driving the rotating shaft 132 to move around its axis and change its speed, a motor speed control device for controlling the motor speed, and a speed detection device for detecting the rotating speed of the rotating shaft. The motor is fixed on the storage tower, and its output shaft is fixedly connected to the rotating shaft 132. The motor speed control device is electrically connected to the motor.

[0020] In addition, in order to ensure sufficient crushing of lumpy powder, as Figure 2 shown, the number of stirring rollers 13 adopted in this embodiment is not less than two, and they are arranged staggeredly along the same horizontal direction. The adjacent stirring blades 133 are arranged in a meshing and staggered manner. During operation, the rotating shafts on the two stirring rollers rotate towards each other, guiding the materials in the storage bin 11 containing lumpy powder into the gap of the meshing space of the two stirring rollers for crushing, maximizing the particle uniformity of the powder material.

[0021] As described above, it is only the preferred specific embodiment of the present utility model. However, the design concept of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model who makes non-substantive changes to the present utility model using this concept shall fall within the scope of infringement of the protection scope of the present utility model.

Claims

1. A quantitative conveying device for powder materials, comprising a conveyor belt frame assembly and a storage tower for storing materials, characterized in that: The storage tower includes an upper storage bin and a lower discharge port, a stirring roller for crushing block powder is rotatably arranged in the discharge port, the conveyor belt frame assembly includes a machine body and a belt body arranged on the machine body, side baffles located on both sides of the belt body are fixedly connected to the machine body, and quantitative partitions are movably connected at equal intervals along the length direction of the belt body, and the upper end surface of the quantitative partition is in contact with the discharge port.

2. A powder material quantitative conveying device according to claim 1, characterized in that: The stirring roller comprises a rotating shaft pivotally arranged in the material discharge port, stirring blades fixed on the peripheral wall surface of the rotating shaft, and a driving mechanism for driving the rotating shaft to rotate.

3. A powder material quantitative conveying device according to claim 2, characterized in that: There are no less than two stirring rollers, which are staggered and arranged in the same horizontal direction, and adjacent stirring blades are meshed and intersected.

4. A powder material quantitative conveying device according to claim 3, characterized in that: The driving mechanism includes a motor for driving the rotating shaft to move around its axis and change its rotation speed, a motor speed regulating device for controlling the motor speed and a speed detecting device for detecting the rotation speed of the rotating shaft; the motor is fixed on the storage tower, its output shaft is fixedly connected to the rotating shaft, and the motor speed regulating device is electrically connected to the motor.

5. A powder material quantitative conveying device according to claim 1, characterized in that: The belt body is evenly distributed with limiting slots, and the quantitative partitions are detachably fixed on the limiting slots.

6. A powder material quantitative conveying device according to claim 1, characterized in that: The lower parts of two opposite sides of the discharge port are correspondingly located on the inner sides of the two side baffles.

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