CN216763320U - Weighing belt feeder - Google Patents

Abstract

The utility model relates to a weighing belt feeder, and belongs to the technical field of material conveying equipment. The belt conveyor comprises a belt conveyor device, a material guide chute and a belt scale, wherein the belt scale is arranged on an inner ring of an annular conveyor belt, the upper part of the material guide chute is connected to the lower part of a storage bin, the material guide chute is of a splayed structure with a small upper part and a large lower part in the height direction, and is also of a conical structure with a small inlet and a large outlet in the feeding direction. The gap between the lower part of the material guiding chute and the conveying belt is also of a conical structure with a small inlet and a large outlet. The distance between the guide chute and the outer edge of the conveyer belt is more than 1.5 times of the height of the maximum gap between the guide chute and the conveyer belt. The outer side of the material guide chute is provided with a high molecular polyethylene material baffle plate. The distance between the material baffle and the outer side of the material guide chute is 1.2 times larger than the maximum gap between the material guide chute and the conveying belt. A high molecular polyethylene lining plate is laid inside the material guide chute. The utility model has the advantages of simple structure, high weighing precision, long service life and the like.

Description

Weighing belt feeder

technical field

The utility model relates to a weighing belt feeder, which belongs to the technology in the field of material conveying equipment.

Background technique

Modern industry uses a large number of feeders to transport materials. With the progress of modern industry and the improvement of industrial control requirements, there are more and more applications of weight measurement of materials in the process of material transport. Because the belt feeder has a series of advantages such as stable operation, convenient adjustment of the feeding amount, and low power consumption, and at the same time, the weight of the material and the feeding amount can be measured by directly installing the weighing device at the lower part of the conveyor belt. It has been widely used in production, but this kind of belt feeder with weighing function also has the following problems in the actual use process: when there are large pieces of material in the feeding material, the outlet of the feeder is required. The size should be large enough to ensure that the materials are smoothly sent out through the feeder without jamming. In this way, the thickness of the materials in the belt feeder is relatively large. In order to smoothly realize the transportation and weighing of these materials. A relatively high tank body must be used to limit the dispersal of the material, but after the tank body, the material interacts between the tank body and the tank body, which affects the downward gravity of the material on the belt, and at the same time When the bulk material is transported forward in the tank, friction and impact will inevitably occur with the tank. Since the tank does not move during the feeding process, and the conveyor belt at the bottom of the tank is in constant motion, the time between the two is There is a certain gap. During the feeding process, the finely divided materials may also enter the gap, and the belt will be jammed during the movement of the belt. All these factors will seriously affect the weighing device installed at the lower part of the conveyor belt of the feeder. The weighing accuracy of the device severely limits the normal application of the weighing belt feeder, and new technological means must be adopted to solve this problem.

Utility model content

The purpose of the utility model is to provide such a weighing belt feeder, which can effectively solve the problem of inaccurate weighing accuracy existing in the use process of the weighing belt feeder.

The purpose of the utility model is achieved as follows: a weighing belt feeder includes a belt conveying device, a material guide chute, and a belt scale. The belt scale is installed on the inner ring of the annular conveyor belt of the conveying device. The upper part of the material chute is connected to the lower part of the material silo, and the belt conveying device is installed at the lower part of the material guide chute. It is a tapered structure with a small size and a large size.

The distance between the guide chute and the outer edge of the conveyor belt is greater than 1.5 times the height of the maximum gap between the guide chute and the conveyor belt.

A baffle plate made of high molecular polyethylene material is arranged on the outside of the guide chute.

The distance between the baffle plate and the outside of the material guide chute is greater than 1.2 times the maximum gap between the material guide chute and the conveyor belt.

A high-molecular polyethylene lining board is laid inside the guide chute.

The material guide chute is a figure-eight structure with a small upper part and a large bottom in the height direction, which reduces the increase in the lateral pressure of the material on the material guide chute due to the increase in thickness of the material in the material guide chute of the feeder, and solves the problem of side pressure. Inaccurate pressure transmitted to the conveyor belt of the belt feeder caused by pressure and the problem of reduced weighing accuracy of the belt scale. In the feeding direction of the belt feeder, the guide chute is a conical structure with small in and out large, so that the width and area of the material in the moving direction gradually increase, reducing the block material and other debris existing in the material. The possibility of jamming inside eliminates the shock and vibration generated during the feeding process of the belt scale installed at the lower part of the conveyor belt after the blockage of large materials, thereby effectively improving the weighing accuracy of the belt scale.

Since the guide chute is fixed during the feeding process, and the conveyor belt at its lower part is fixed, there is a gap between the guide chute and the conveyor belt of the belt feeder, which will inevitably occur during the feeding process. The problem of granular material jamming in this gap occurs. After the jamming occurs, the force on the conveyor belt changes, which directly affects the weighing accuracy of the lower belt scale. The gap is also designed as a conical structure with a small entry and a large one, so that even if the material particles are stuck between the gap between the conveyor belt and the material guide chute during the forward movement of the material, due to the gap in the forward movement process. The size is gradually increased, so that the stuck granular materials can flow out quickly and smoothly, eliminating the jam, thereby eliminating its influence on the weighing accuracy of the belt scale.

Since there is a gap between the guide chute and the conveyor belt, and the gap increases with the increase of the feeding distance, the material may spread out from the gap and slip out from both sides of the conveyor belt to the feeder for conveying. The lower part of the belt has an impact on the operation of the belt feeder. The distance between the guide chute and the outer edge of the conveyor belt is greater than 1.5 times the maximum gap height between the guide chute and the conveyor belt, which can effectively prevent material Slip off the edge of the conveyor belt.

A baffle plate made of high molecular polyethylene material is arranged on the outside of the guide chute, and the distance between the installed baffle plate and the outside of the guide chute is greater than 1.2 times the maximum gap between the guide chute and the conveyor belt, so that during the feeding process Even if there is material overflowing from the gap between the guide chute and the conveyor belt, due to the restriction of the baffle plate, it will not flow out to the lower part of the conveyor belt and cause harmful effects to the operation of the belt feeder. If there are individual particles entering the gap between the guide plate and the conveyor belt, due to the small number of them, coupled with the small coefficient of kinetic friction of high molecular polyethylene and a certain elasticity, the harmful effects are also small. The impact on the weighing accuracy of the belt scale is also small.

A high-molecular polyethylene liner is laid inside the guide chute. When the material is fed in the guide chute, due to the small kinetic friction coefficient of high-molecular polyethylene and the small friction between the material and the material, the material can be reduced. The possible influence on the pressure fluctuation on the belt scale during the moving process in the guide chute improves the weighing accuracy of the belt scale.

Description of drawings

The accompanying drawings 1 and 2 show the structural principle diagram of the embodiment of the present invention, wherein, FIG. 1 is a front sectional view of the structural principle diagram of the present utility model, and FIG. 2 is a right side view of FIG. 1 .

Detailed ways

In the embodiment shown in Fig. 1 and Fig. 2, the meaning of each part number is as follows: 1. Conveyor; 2. Discharge chute; 3. Roller; 4. Conveyor belt: 5. Bracket; 6. Material guide chute; 7. Silo; 8. Gate; 9. Baffle; 10. Belt scale; 11. Liner.

In this embodiment, a gate 8 is installed at the discharge port of the silo 7, the material guide chute 6 is connected under the gate, the material guide chute and the baffle plate 9 are installed on the equipment foundation through the bracket 5, and the material guide chute is the upper small The lower large conical structure is also in the feeding direction of the small in and out large structure. At the same time, the gap between the guide chute and the conveyor belt is also a conical structure with small in and out, and the guide chute is far away from the conveyor belt. The distance between the edges is equal to 1.6 times the height of the maximum gap between the guide chute and the conveyor belt. A baffle plate is installed on the outside of the bottom of the guide chute, and its material is high-molecular polyethylene. The distance between the baffle plate and the outside of the guide chute is equal to 1.5 times the maximum gap between the guide chute and the conveyor belt. A liner 11 made of high molecular polyethylene material is installed on the inside of the guide chute, and a belt feeder is installed under the guide chute. The belt feeder is driven by the roller 3 to drive the conveyor belt 4 to rotate, and the belt scale 10 is installed on the conveyor belt. In the lower part, the discharge end of the belt feeder is equipped with a discharge chute 2, which is used to introduce the given material to the lower conveyor 1, and the conveyor will transport the material to the designated position.

When feeding, first open the gate, at this time the material in the warehouse flows out from the warehouse and enters the conveyor belt of the lower belt feeder, and the conveyor belt is driven by the roller to rotate, and the material on it is sent out. In the process of conveying the material through the conveyor belt, when the material passes through the belt scale, the belt scale weighs the weight of the passing material and measures the weight.

Due to the inevitable existence of large blocks in the material, the feeding height of the feeder must reach a larger value. Due to the limited width of the conveyor belt of the belt feeder, the guide chute is used to limit the conveying of these materials. On the belt, the guide chute is a conical structure with the upper small and the lower large, and the small in and out. After the chute, the influence of the side pressure of the material on the gravity of the downward pressure is effectively reduced, and at the same time, the possibility of shock and vibration caused by the forward movement of the material during the feeding process is greatly reduced. The large structure can effectively reduce the blocking of granular materials that may occur in the gap during the forward conveying process, and reduce the pressure fluctuation on the conveyor belt in the gap after the material is blocked for a long time. All these functions effectively improve the weighing accuracy of the material by the belt scale at the lower part of the conveyor belt.

The distance between the guide chute and the outer edge of the conveyor belt is 1.6 times the height of the maximum gap between the guide chute and the conveyor belt, and the distance between the baffle plate and the outside of the guide chute is the maximum gap between the guide chute and the conveyor belt. It can effectively prevent the material from spilling from the edge of the conveyor belt during the feeding process, which affects the normal operation of the belt feeder.

Both the baffle plate and the lining plate are made of high molecular polyethylene material, which can not only ensure a sufficient service life, but also effectively reduce the friction between the material and the material guide chute due to the low friction coefficient during the conveying process. Therefore, the gravity of the material can be more accurately transmitted to the belt scale installed at the lower part of the conveyor belt, thereby improving the measurement accuracy of the belt scale.

Claims (6)

1. The utility model provides a belt feeder weighs, contains belt conveyor, guide chute, belt weigher, and the inner circle at conveyor's endless conveyor is installed to the belt weigher, its characterized in that: the upper part of the material guide chute is connected to the lower part of the material bin, the belt type conveying device is arranged on the lower part of the material guide chute, the material guide chute is of a splayed structure with a small upper part and a large lower part in the height direction, and is also of a tapered structure with a small inlet and a large outlet in the feeding direction.

2. A weighing belt feeder according to claim 1, characterised in that: the gap between the lower part of the material guide chute and the conveying belt is also of a conical structure with a small inlet and a large outlet.

3. A weighing belt feeder according to claim 1, characterised in that: the distance between the material guide chute and the outer edge of the conveying belt is more than 1.5 times of the height of the maximum gap between the material guide chute and the conveying belt.

4. A weighing belt feeder according to claim 2, wherein: a material baffle plate made of high polymer polyethylene material is arranged outside the material guide chute.

5. A weighing belt feeder according to claim 4, wherein: the distance between the material baffle and the outer side of the material guide chute is more than 1.2 times of the maximum clearance between the material guide chute and the conveying belt.

6. A weighing belt feeder according to claim 4, wherein: a high molecular polyethylene lining plate is laid inside the material guide chute.

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