Fiber feeding machine and fiber feeding method

Abstract

The invention discloses a fiber feeding machine and a fiber feeding method.The fiber feeding machine comprises a stock bin, a discharging screw, a vibration feeder and a metering scale, a fiber bag feeding port is formed in the top of the stock bin, a fiber discharging port is formed in the bottom of the stock bin, a fiber scattering device used for scattering fiber bags is arranged in the stock bin, the discharging screw is arranged in the stock bin, and the vibration feeder is arranged in the metering scale. The conveying device is located below the fiber scattering device and used for conveying scattered fibers to the fiber discharging opening; the vibration feeder is arranged below the stock bin, and a feeding port of the vibration feeder is connected with a fiber discharging port of the stock bin. The metering scale is arranged below the vibrating feeder, and a feed port of the metering scale is connected with a discharge port of the vibrating feeder. The technical problems of high manual labor intensity and poor feeding uniformity can be effectively solved. According to the feeding method, the working efficiency is high, the fiber dispersity is good, the fiber feeding amount is easy to control, and the preparation quality of the fiber concrete can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fiber concrete, and in particular to a fiber feeding machine and a fiber feeding method. Background Art

[0002] Fiber concrete is a cement-based composite material composed of cement slurry, 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, flexural, impact strength, elongation and toughness of the concrete are improved. Fiber concrete is mainly used in tunnels, subways, airports, elevated roadbeds, spillways, explosion-proof and earthquake-proof projects, etc.

[0003] In the current fiber concrete production process, fiber packages are usually manually distributed onto an aggregate feeding belt, and then the fibers and aggregate are fed into a mixer for mixing. This existing fiber feeding method has technical problems such as high labor intensity and poor feeding uniformity. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a fiber feeding machine and a fiber feeding method.

[0005] The technical solution adopted in the present invention is:

[0006] The present invention provides a fiber feeding machine, which includes a hopper, a discharging screw, a vibrating feeder and a metering scale. A fiber bag feeding port is provided on the top of the hopper, a fiber discharge port is provided on the bottom of the hopper, a fiber breaking device for breaking up the fiber bags is provided in the hopper, the discharging screw is provided in the hopper and is located below the fiber breaking device, and is used to transport the broken fibers to the fiber discharge port; the vibrating feeder is provided below the hopper, and its feeding port is connected to the fiber discharge port of the hopper; the metering scale is provided below the vibrating feeder, and its feeding port is connected to the discharge port of the vibrating feeder.

[0007] Furthermore, the silo body consists of a rectangular part and a conical part, the conical part is located below the rectangular part; the fiber breaking device is located at the lower end of the rectangular part, the discharge spiral is located in the conical part, and the bottom of the conical part is set to be an arc shape.

[0008] Furthermore, the fiber breaking up device includes a breaking up shaft, a breaking up motor for driving the breaking up shaft to rotate, and breaking up blades arranged on the breaking up shaft.

[0009] Furthermore, there are a plurality of scattering blades, all of which are arranged perpendicular to the scattering axis and are evenly distributed along the axial direction of the scattering axis.

[0010] Furthermore, the discharging screw includes a discharging shaft, a discharging motor for driving the discharging shaft to rotate, and a spiral blade arranged on the discharging shaft.

[0011] Furthermore, the vibrating feeder includes a vibrating plate and a vibrating motor for driving the vibrating plate to vibrate.

[0012] Furthermore, the cross section of the vibration plate is U-shaped, a sealing plate is provided at the feed end, the discharge end is open, and the vibration plate is tilted from the feed end to the discharge end.

[0013] Furthermore, the metering scale includes a bracket, a metering bin, a discharge valve and a weighing sensor; the metering bin is arranged on the bracket through the weighing sensor, the bottom of the metering bin is provided with a discharge port, and the discharge port is provided with an electric discharge valve.

[0014] The present invention also provides a fiber feeding method, using any of the above fiber feeding machines, specifically comprising the following steps:

[0015] (1) After removing the foreskin of the fiber bale, the fiber bale is put into the hopper through the fiber bale feeding port. The fiber bale put into the hopper is broken up by the fiber breaking device and falls onto the discharge screw, and is transported to the fiber discharge port by the discharge screw;

[0016] (2) The broken fibers fall through the fiber discharge port into the vibrating feeder, where they are further dispersed and enter the metering bin under the vibration of the vibrating feeder;

[0017] (3) The dispersed fibers are weighed in the metering bin and then added to the aggregate feeding belt through the guide trough. Together with the aggregate, they are put into the concrete mixer for mixing.

[0018] Beneficial effects of the present invention:

[0019] 1. This application sets up a hopper, a discharging screw, a vibrating feeder and a metering scale, so that the fiber package can be put into the hopper to be broken up and then transported to the vibrating feeder through the discharging screw. The broken fibers are further vibrated and dispersed by the vibrating feeder and then put into the metering scale. After being measured by the metering scale, they are quantitatively put onto the aggregate feeding belt and put into the mixer together with the aggregate for stirring and mixing. Through the above measures, the technical problems of high labor intensity and poor feeding uniformity can be effectively solved.

[0020] 2. The feeding method of the present application has high working efficiency, good fiber dispersion, and easy control of fiber feeding amount, which is beneficial to improving the preparation quality of fiber concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the structural diagram of the fiber feeding machine for this application.

[0022] Figure 2 for Figure 1 Cross-sectional view along the AA direction. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and a preferred embodiment.

[0024] Example 1

[0025] See Figure 1 and Figure 2 The present embodiment provides a fiber feeding machine, including a silo 10, a discharging screw 20, a vibrating feeder 30 and a measuring scale 40. A fiber bag feeding port 11 is provided on the top of the silo, a fiber discharge port 12 is provided on the bottom of the silo, and a fiber breaking device 13 for breaking up the fiber bags is provided in the silo. The discharging screw 20 is provided in the silo and is located below the fiber breaking device 13, and is used to transport the broken fibers to the fiber discharge port 12; the vibrating feeder 30 is provided below the silo 10, and its feed port is connected to the fiber discharge port 12 of the silo 10; the measuring scale 40 is provided below the vibrating feeder 30, and its feed port is connected to the discharge port of the vibrating feeder 30.

[0026] In specific implementation, the silo 10 is made of steel or plastic plates, the fiber bag feeding port 11 is located at the rear side of the top of the silo, and the fiber discharge port 12 is located at the front side of the bottom of the silo. The silo can be configured as a rectangular portion and a conical portion, with the bottom of the conical portion configured as an arc. The conical portion is located below the rectangular portion, and one end thereof protrudes to the outside of the silo to form a cylindrical shell for mounting a discharge screw. The fiber discharge port 12 is provided on the cylindrical shell. The fiber disintegration device 13 is mounted at the lower end of the rectangular portion, and the discharge screw 20 is mounted in the conical portion to facilitate the disintegration and transportation of the fibers.

[0027] The fiber breaking device 13 can adopt any existing device that can break up the fiber bundle. Preferably, the breaking device 13 includes a breaking shaft 132, a breaking motor 131 for driving the breaking shaft to rotate, and a breaking blade 133 provided on the breaking shaft 132. The breaking shaft 132 is rotatably arranged in the silo through a bearing, and the breaking motor 131 is arranged on the rear side of the silo and connected to one end of the breaking shaft. The breaking blade 133 can also adopt any structural form of blade that can achieve fiber dispersion, such as a rod, a disc or a spherical shape as in the present embodiment. Figure 1 The flat plate, rod or flat plate shown can be grouped into 1-3 pieces. Each set of blades is radially arranged along a cross section of the breaking up axis. Each set of blades is evenly distributed along the axial direction of the breaking up axis, which is more conducive to improving the dispersion effect and uniformity of the fibers.

[0028] The discharge screw 20 is a prior art, comprising a discharge shaft 22, a discharge motor 21 for driving the discharge shaft to rotate, and a spiral blade 23 arranged on the discharge shaft. Preferably, the discharge motor 21 is arranged outside the rear side of the silo and connected to one end of the discharge shaft 22.

[0029] The vibrating feeder 30 includes a vibrating plate 31 and a vibrating motor 32 for driving the vibrating plate to vibrate. The vibrating plate 31 can be made of a steel plate rolled into a U-shaped trough with an opening facing upward. The feed end is provided with a sealing plate to prevent the fiber from leaking out during feeding; the discharge end is open to form a fiber discharge port. The silo 10 can be set in a mounting frame, and the vibrating plate 31 can be set on the mounting frame by a spring, and tilted from the feed end to the discharge end to facilitate discharge. A vibrating motor 32 is set at the bottom of the vibrating plate 31, and the vibration motor drives the vibrating plate to vibrate. The working principle of the vibrating feeder 30 is the existing technology and will not be described here.

[0030] The weighing scale 10 is conventional, and can be any type of weighing scale used in concrete mixing plants for weighing aggregates or powders. In this embodiment, the weighing scale 10 includes a bracket, a metering bin 41, a discharge valve, and a load cell 42. The metering bin 41 is mounted on the bracket via the load cell 42, and the bracket can be fixed within a mounting frame. The metering bin can be a conical bin with a discharge port at its bottom, which is equipped with a motorized cover (not shown). Preferably, there are three load cells 42, forming three fulcrums to support the metering bin 41. The load cells 42 are preferably Wuppertal MV10H 330-11y models.

[0031] For ease of use, a material guide trough may be further provided at the discharge port of the weighing scale 10, through which the measured fibers are conveyed to the aggregate belt.

[0032] The following uses the fiber feeding machine described in Example 1 and manual methods to feed concrete fibers as examples to illustrate the technical effects of the present invention.

[0033] The method for feeding using the fiber feeding machine described in Example 1 is as follows:

[0034] 1. After removing the foreskin of the fiber bale, the fiber bale is put into the hopper 10 through the fiber bale feeding port 11. The fiber bale in the hopper is broken up by the fiber breaking device 13 and falls onto the discharge screw 20. The discharge screw 20 is then transported to the fiber discharge port 12.

[0035] 2. The broken fibers fall through the fiber discharge port 12 into the vibrating feeder 30 , where they are further dispersed by the vibration of the vibrating feeder 30 and enter the metering bin 41 ;

[0036] 3. After being weighed by the metering bin 41, the dispersed fibers are fed to the aggregate feeding belt through the guide trough and fed into the concrete mixer together with the aggregate for mixing.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A fiber feeding machine, characterized in that: The invention comprises a silo (10), a discharge screw (20), a vibrating feeder (30) and a weighing scale (40); a fiber bag feeding port (11) is arranged at the top of the silo, a fiber discharge port (12) is arranged at the bottom of the silo, a fiber breaking device (13) for breaking up the fiber bags is arranged in the silo, and the discharge screw (20) is arranged in the silo and below the fiber breaking device (13) for conveying the broken fibers to the fiber discharge port (12); the vibrating feeder (30) is arranged below the silo (10), and its feed port is connected to the fiber discharge port (12) of the silo (10); and the weighing scale (40) is arranged below the vibrating feeder (30), and its feed port is connected to the discharge port of the vibrating feeder (30).

2. A fiber feeding machine according to claim 1, characterized in that: The silo (10) comprises a rectangular portion and a conical portion, wherein the conical portion is located below the rectangular portion; the fiber breaking device (13) is located at the lower end of the rectangular portion, the discharge spiral (20) is located inside the conical portion, and the bottom of the conical portion is arranged in an arc shape.

3. A fiber feeding machine according to claim 1 or 2, characterized in that: The fiber scattering device (13) comprises a scattering shaft (132), a scattering motor (131) for driving the scattering shaft to rotate, and scattering blades (133) arranged on the scattering shaft (132).

4. A fiber feeding machine according to claim 3, characterized in that: There are a plurality of scattering blades (133), all of which are arranged perpendicular to the scattering axis and are evenly distributed along the axial direction of the scattering axis.

5. A fiber feeding machine according to claim 1 or 2, characterized in that: The discharge screw (20) comprises a discharge shaft (22), a discharge motor (21) for driving the discharge shaft to rotate, and a spiral blade (23) arranged on the discharge shaft.

6. A fiber feeding machine according to claim 1 or 2, characterized in that: The vibrating feeder (30) includes a vibrating plate (31) and a vibrating motor (32) for driving the vibrating plate to vibrate.

7. A fiber feeding machine according to claim 6, characterized in that: The cross section of the vibration plate (31) is U-shaped, a sealing plate is provided at the feeding end, and the discharging end is open, and the vibration plate is inclined from the feeding end to the discharging end.

8. A fiber feeding machine according to claim 1 or 2, characterized in that: The metering scale (40) comprises a bracket, a metering bin (41), a discharge valve and a weighing sensor (42); the metering bin (41) is arranged on the bracket via the weighing sensor (42), a discharge port is arranged at the bottom of the metering bin, and an electric discharge valve is arranged at the discharge port.

9. A fiber feeding method, characterized in that: Using the fiber feeding machine according to any one of claims 1 to 8 specifically comprises the following steps: (1) After removing the foreskin of the fiber bale, the fiber bale is put into the silo through the fiber bale feeding port. The fiber bale put into the silo is broken up by the fiber breaking device and then falls onto the discharge screw, and is then transported to the fiber discharge port by the discharge screw; (2) The broken fibers fall into the vibrating feeder through the fiber discharge port, and are further dispersed and enter the metering bin under the vibration of the vibrating feeder; (3) After being weighed by the metering bin, the dispersed fibers are added to the aggregate feeding belt through the guide trough and then put into the concrete mixer together with the aggregate for stirring and mixing.

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