Fiber feeding device for concrete mixing plant

Abstract

The utility model discloses a fiber feeding device for a concrete mixing plant, which comprises a stock bin, a first belt conveyor, a second belt conveyor, a third belt conveyor and a fourth belt conveyor, the stock bin is used for storing fiber bags, and the bottom of the stock bin is provided with a fiber bag blanking port; the first belt conveyor is located at the bottom of the stock bin and used for receiving the fiber bags falling from the fiber bag falling opening. The first belt conveyor, the second belt conveyor, the third belt conveyor and the fourth belt conveyor are sequentially connected and used for dispersing fiber bags on the first belt conveyor step by step and then putting the fiber bags into the aggregate belt. The automatic feeding device can replace manual work to achieve mechanical feeding, and the labor intensity of workers is reduced. And moreover, the number of fiber bags fed on the aggregate belt can be accurately controlled, the fiber adding amount is controlled, and the production quality of fiber concrete is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, specifically to a fiber feeding device for a concrete mixing plant. Background Technology

[0002] Fiber-reinforced concrete is a cement-based composite material composed of cement paste, mortar or concrete as the base material and fiber as the reinforcing material. Due to the high tensile strength and elongation of the fiber, the tensile strength, flexural strength, impact strength, elongation and toughness of the concrete are improved. Fiber-reinforced concrete is mainly used in tunnels, subways, airports, elevated roadbeds, spillways and explosion-proof and earthquake-resistant projects.

[0003] In current fiber-reinforced concrete preparation methods, fiber bundles are typically manually added to the aggregate conveyor belt, and the fibers and aggregates are then fed into a mixer for mixing. However, this method suffers from high labor intensity and poor uniformity of fiber addition. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a fiber feeding device for concrete mixing plants.

[0005] The technical solution adopted in this utility model is:

[0006] A fiber feeding device for a concrete mixing plant includes a silo, a first belt conveyor, a second belt conveyor, a third belt conveyor, and a fourth belt conveyor.

[0007] The hopper is used to store fiber bales, and the bottom of the hopper has a fiber bale discharge port;

[0008] The first belt conveyor is located at the bottom of the silo and is used to receive fiber bales falling from the fiber bale discharge port;

[0009] The first belt conveyor, the second belt conveyor, the third belt conveyor and the fourth belt conveyor are connected in sequence to disperse the fiber bales on the first belt conveyor in stages before feeding them into the aggregate belt.

[0010] Furthermore, the hopper is a square pyramid shape that is larger at the top and smaller at the bottom. Both the top and bottom of the hopper are open. The bottom opening is the fiber bale discharge port, and the top opening is the fiber bale feeding port. The vertical distance between the fiber bale discharge port and the first belt conveyor is greater than the height of one fiber bale but less than the height of two fiber bales.

[0011] Furthermore, the width of the bottom opening of the silo is 1.3-1.5 times the width of the fiber bundle, and the length of the bottom opening of the silo is 3-5 times the length of the fiber bundle.

[0012] Furthermore, the belt linear speeds of the first, second, and third belt conveyors increase sequentially, and the belt linear speed of the fourth belt conveyor is equal to that of the third belt conveyor.

[0013] Furthermore, a counting device is installed at the end of the fourth belt conveyor to measure the number of fiber bales fed into the aggregate belt.

[0014] Furthermore, a limit switch is installed at the end of the fourth belt conveyor, which is used to control the feeding of aggregate onto the aggregate belt by the fourth belt conveyor.

[0015] The beneficial effects of this invention are as follows: By setting up a silo, a first belt conveyor, a second belt conveyor, a third belt conveyor, and a fourth belt conveyor, fiber bales can be stored in the silo. After being dispersed stepwise by the first, second, and third belt conveyors, they are fed onto the aggregate belt via the fourth belt conveyor. This replaces manual labor, achieving mechanized feeding and reducing labor intensity. Furthermore, by controlling the belt speeds of the first, second, and third belt conveyors, the spacing of the fiber bales on the fourth belt conveyor can be controlled, thereby precisely controlling the number of fiber bales fed onto the aggregate belt, controlling the amount of fiber added, and improving the production quality of fiber-reinforced concrete. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the fiber feeding device of this application.

[0017] Figure 2 for Figure 1 Top view. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred embodiment.

[0019] See Figure 1 and Figure 2 A fiber feeding device for a concrete mixing plant includes a silo 1, a first belt conveyor 2, a second belt conveyor 3, a third belt conveyor 4, and a fourth belt conveyor 5.

[0020] The hopper 1 is a square pyramid shape, wider at the top and narrower at the bottom. The top of the hopper 1 is open, forming the fiber bale feeding port, and the bottom is open, forming the fiber bale discharge port. The width of the fiber bale discharge port is 1.3-1.5 times the width of the fiber bale, and the length of the fiber bale discharge port is 3-5 times the length of the fiber bale; this allows multiple fiber bales stacked in the hopper 1 to fall onto the first belt conveyor 2 in a single row. The fiber bales can be stacked in the hopper 1 by a robotic arm, with the length direction of the fiber bales aligned with the belt conveyor direction of the first belt conveyor 2.

[0021] The hopper 1 is mounted on the first belt conveyor 2 via a support frame, allowing the first belt conveyor 2 to seal off the bottom of the hopper 1. During storage, the bottom layer of fiber bales in the hopper is directly supported on the conveyor belt of the first belt conveyor 2. The vertical distance between the fiber bale outlet and the first belt conveyor 2 is greater than the height of one fiber bale but less than the height of two fiber bales; this allows the first belt conveyor 2 to transport a single layer of fiber bales to the second belt conveyor 3, improving the accuracy of fiber feeding control.

[0022] The first belt conveyor 2, the second belt conveyor 3, the third belt conveyor 4, and the fourth belt conveyor 5 are all flat belt conveyors, connected in sequence. The installation height of the first belt conveyor 2, the second belt conveyor 3, the third belt conveyor 4, and the fourth belt conveyor 5 decreases sequentially, so that the fiber bales on the first belt conveyor 2 can be conveyed to the second belt conveyor 3, the fiber bales on the second belt conveyor 3 can be conveyed to the third belt conveyor 4, and the fiber bales on the third belt conveyor 4 can be conveyed to the fourth belt conveyor 5.

[0023] The linear speeds of the belts in the first belt conveyor 2, the second belt conveyor 3, and the third belt conveyor 4 increase sequentially, while the linear speed of the fourth belt conveyor 5 is equal to that of the third belt conveyor 4. For example, the linear speed of the second belt conveyor 3 can be controlled to be 1.25 times that of the first belt conveyor 2, and the linear speed of the third belt conveyor 4 can be controlled to be 1.5 times that of the second belt conveyor 3. By controlling the speed difference, the spacing between the fiber bales tightly arranged on the first belt conveyor 2 when they are conveyed to the second belt conveyor 3 can be increased to 1.25 times, and the spacing between the fiber bales arranged on the second belt conveyor 3 when they are conveyed to the third belt conveyor 4 can be increased to 1.5 times. In this way, the spacing between the fiber bales increases step by step to achieve a fixed-distance dispersion effect. The dispersed fiber bales are conveyed to the fourth belt conveyor 5. A limit switch 6 is installed at the end of the fourth belt conveyor 5, preferably a Wuppertal MV10H 330-11y model. When the fiber bale 10 touches the limit switch 6, the first belt conveyor 2, the second belt conveyor 3, the third belt conveyor 4, and the fourth belt conveyor 5 stop moving, awaiting a feeding signal. When a feeding signal is received, the first belt conveyor 2, the second belt conveyor 3, the third belt conveyor 4, and the fourth belt conveyor 5 start feeding. During feeding, a counter (not shown in the figure) at the end of the fourth belt conveyor 5 counts the number of fiber bales fed, and the count is recorded and uploaded to the control program. Once the set value is reached, the belt conveyor stops moving. After feeding is complete, it waits for the next feeding signal, and this process repeats.

[0024] Since the fiber bundles dispersed on the fourth belt conveyor 5 have basically equal spacing, the fibers can be evenly added to the mixing pot during the feeding cycle, thereby improving the mixing quality of the fibers and concrete.

[0025] 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 and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications are also within the protection scope of the present utility model.

Claims

1. A fiber feeding device for a concrete mixing plant, characterized in that, It includes a silo, a first belt conveyor, a second belt conveyor, a third belt conveyor, and a fourth belt conveyor. The hopper is used to store fiber bales, and the bottom of the hopper has a fiber bale discharge port; The first belt conveyor is located at the bottom of the silo and is used to receive fiber bales falling from the fiber bale discharge port; The first belt conveyor, the second belt conveyor, the third belt conveyor and the fourth belt conveyor are connected in sequence to disperse the fiber bales on the first belt conveyor in stages before feeding them into the aggregate belt.

2. The fiber feeding device according to claim 1, characterized in that, The hopper is a square pyramid shape, wider at the top and narrower at the bottom. Both the top and bottom of the hopper are open. The bottom opening is the fiber bale discharge port, and the top opening is the fiber bale feeding port. The vertical distance between the fiber bale discharge port and the first belt conveyor is greater than the height of one fiber bale but less than the height of two fiber bales.

3. The fiber feeding device according to claim 2, characterized in that, The bottom opening width of the hopper is 1.3-1.5 times the width of the fiber bundle, and the bottom opening length of the hopper is 3-5 times the length of the fiber bundle.

4. The fiber feeding device according to claim 1, characterized in that, The belt linear speeds of the first, second, and third belt conveyors increase sequentially, while the belt linear speed of the fourth belt conveyor is equal to that of the third belt conveyor.

5. The fiber feeding device according to claim 1, characterized in that, A counting device is installed at the end of the fourth belt conveyor to measure the number of fiber bales fed into the aggregate belt.

6. The fiber feeding device according to claim 1, characterized in that, A limit switch is installed at the end of the fourth belt conveyor. The limit switch is used to control the feeding of aggregate onto the aggregate belt by the fourth belt conveyor.

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