Powder feeding device of concrete mixing plant

Abstract

The utility model discloses a powder feeding device of a concrete mixing plant. The powder feeding device comprises a spiral conveyor, a feeding port, a discharging port and a uniform material dispersing device. The uniform material dispersing device is arranged at the bottom end of the discharging port, the motor drives the bottom cover to rotate, when the material dispersing port coincides with the position of the through hole, powder can penetrate through the position of the through hole to be dispersed downwards from the inner side of the material dispersing port, when the bottom cover coincides with the position of the through hole, the bottom cover can close the position of the through hole to stop material dispersing, and the powder can be uniformly dispersed along with rotation of the bottom cover. The powder can be sequentially discharged along the through holes which are annularly arranged at the bottom of the material dispersing disc, so that the material dispersing range of the powder is expanded, the distribution of the powder is more uniform, the mixing speed of the powder is increased, and the sealing cover is arranged on the bottom surface of the bottom cover and can move to cover the surface of the material dispersing opening, so that the size of the material dispersing opening is adjusted, and the material discharging speed is controlled. Adjustment can be achieved automatically according to working requirements, functionality is high, adjustment can be completed by screwing a positioning bolt to lock the position of the sealing cover, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the relevant field of concrete mixing stations, in particular to a powder material feeding device for a concrete mixing station. Background Art

[0002] A concrete mixing station is a combined device used for centralized mixing of concrete. It is often used in large and medium-sized water conservancy, power, bridge and other projects with large concrete engineering volume, long construction period and concentrated construction sites. Among them, ordinary wollastonite powder is one of the commonly used mineral powder materials in mixing stations. It can react with cement to form silicate cementitious materials to improve the strength and durability of concrete. In the prior art, screw conveyors are usually used to transport ordinary wollastonite powder to meet the feeding requirements of mixing equipment.

[0003] Existing patent application number: CN202021885584.2 A screw conveyor and a movable screw conveyor, include a casing, a driving mechanism and a spiral blade, the spiral blade having a rotating shaft, the spiral blade being arranged in the casing, bearings being respectively arranged at the parts of the casing near both ends, the rotating shafts at the two ends of the spiral blade are respectively connected to the bearings accordingly. The utility model reduces the intrusion of materials into the bearings at both ends, greatly protects the bearings at both ends, and extends the service life.

[0004] The above patent records a screw conveyor in the prior art. In actual use, since the outlet structure of the screw conveyor is relatively simple, which is basically a tubular opening, the powder can only pour into one place and the distribution of the powder is relatively concentrated. The mixing uniformity of the raw materials will directly affect the quality of the concrete. It is necessary to further improve the outlet structure of the screw conveyor to increase the mixing rate of the powder. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a powder material feeding device for a concrete mixing station.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a powder feeding device for a concrete mixing station, comprising a screw conveyor, a feeding port, a discharging port and a uniform dispersing device, wherein the rear end of the top surface of the screw conveyor is provided with a feeding port, the front end of the bottom surface of the screw conveyor is provided with a discharging port, the bottom end of the discharging port is provided with a uniform dispersing device, the uniform dispersing device comprises a dispersing plate, a through hole, a bracket, a motor, a power cord, a bottom cover and a dispersing port, the bottom end of the dispersing port is flange-connected with a dispersing plate, wherein the dispersing port is connected to the dispersing plate The inner sides of the disks are interconnected, a through hole is provided on the bottom surface of the bulk material disk, the through hole is connected to the inner side of the bulk material disk, a bracket is provided directly below the bulk material disk, the left and right ends of the bracket are welded and fixed to the bulk material disk, a motor is installed on the middle section of the bottom surface of the bracket, a power cord is connected to the side of the motor, and the power cord is connected to the outside along the bottom surface of the bracket, a bottom cover is sleeved on the surface of the output end of the top of the motor, and the bottom cover is fitted to the bottom surface of the bulk material disk to cover the through hole, a bulk material opening is provided on the edge of the bottom surface of the bottom cover, and the bulk material opening corresponds to the position of the through hole.

[0007] Preferably, the through holes are arranged in a ring shape in the edge area of ​​the bottom surface of the bulk material tray, and at least three rows of through holes are provided.

[0008] Preferably, a slide is integrally provided in the middle of the inner bottom surface of the bulk material tray, and the slide is in a truncated cone shape.

[0009] Preferably, a sweep rod is rotatably mounted at the center of the top of the slide, wherein the distance between the bottom of the sweep rod and the bulk material tray does not exceed 2 mm, and the top output end of the motor passes through the slide and is connected to the rotation point of the sweep rod.

[0010] Preferably, the sweeping rod rotates synchronously with the bottom cover, and the sweeping rod is located above the bulk material opening.

[0011] Preferably, the outer sleeve of the motor is provided with a dust cover.

[0012] Preferably, the bottom edge of the bottom cover is slidably connected to the cover by an arc guide rail, the cover can be moved to cover the surface of the bulk material outlet, the screw hole at the tail of the cover is threadedly connected with a positioning bolt, and the positioning bolt can pass through the cover and contact the bottom surface of the bottom cover.

[0013] Beneficial effects of the utility model:

[0014] The utility model arranges a uniform dispersing device at the bottom end of the discharging port, and drives the bottom cover to rotate by a motor. When the dispersing port and the through hole are in position, the powder can pass through the through hole and be dispersed downward from the inside of the dispersing port. When the bottom cover and the through hole are in position, the bottom cover will close the through hole and stop dispersing. With the rotation of the bottom cover, the powder can be discharged in sequence along the through holes arranged in a ring at the bottom of the dispersing pan, thereby expanding the dispersing range of the powder and making the distribution of the powder more evenly diffused, so as to improve the mixing rate of the powder.

[0015] The utility model provides a sealing cover on the bottom surface of the bottom cover, and the sealing cover can be moved to cover the surface of the bulk material opening, so as to adjust the size of the bulk material opening, thereby controlling the discharge speed. It can be adjusted according to work requirements and has strong functionality. Finally, the positioning bolts are tightened to lock the sealing cover position to complete the adjustment, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the uniform bulk material device in the utility model;

[0018] Figure 3 It is a schematic diagram of the top cross-sectional structure of the bulk material tray in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the bulk material tray in the utility model when viewed from above;

[0020] Figure 5 It is a schematic diagram of the bottom cover in the utility model when viewed from above.

[0021] Among them: screw conveyor-1, feed port-2, discharge port-3, uniform dispersing device-4, dispersing plate-41, through hole-42, bracket-43, motor-44, power cord-45, bottom cover-46, dispersing port-47, slide-48, sweeping rod-49, sealing cover-410, positioning bolt-411. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0023] See also Figure 1 The utility model provides a powder feeding device for a concrete mixing station, comprising a screw conveyor 1, a feed port 2, a discharge port 3 and a uniform dispersing device 4. The feed port 2 is provided at the rear end of the top surface of the screw conveyor 1, the discharge port 3 is provided at the front end of the bottom surface of the screw conveyor 1, and the uniform dispersing device 4 is provided at the bottom end of the discharge port 3.

[0024] See also Figure 2-4The uniform dispersing device 4 in the utility model comprises a dispersing pan 41, a through hole 42, a bracket 43, a motor 44, a power line 45, a bottom cover 46 and a dispersing port 47. The bottom end of the discharging port 3 is connected with the dispersing pan 41 by a flange, wherein the discharging port 3 is connected with the inner side of the dispersing pan 41, a through hole 42 is provided on the bottom surface of the dispersing pan 41, and the through hole 42 is connected to the inner side of the dispersing pan 41. A bracket 43 is arranged directly below the dispersing pan 41, and the left and right ends of the bracket 43 are welded and fixed to the dispersing pan 41. The middle section of the bottom surface of the bracket 43 is equipped with an electric The motor 44 is provided with a power cord 45 on its side, and the power cord 45 is connected to the outside along the bottom surface of the bracket 43, and a bottom cover 46 is sleeved and installed on the surface of the top output end of the motor 44, and the bottom cover 46 is attached to the bottom surface of the bulk material tray 41 to cover the through hole 42, and the bottom cover 46 plays the role of closing the through hole 42, and a bulk material opening 47 is provided on the edge of the bottom surface of the bottom cover 46, and the bulk material opening 47 corresponds to the position of the through hole 42, and the powder inside the bulk material tray 41 can pass through the through hole 42 and be dispersed downward from the inside of the bulk material opening 47.

[0025] To further illustrate, the through holes 42 are arranged in a ring shape at the bottom edge area of ​​the bulk material tray 41, and at least three rows of through holes 42 are provided to expand the bulk material range of the powder, so that the distribution of the powder is more evenly diffused and easier to be stirred and mixed.

[0026] To further explain, a slide 48 is integrally provided in the middle of the inner bottom surface of the bulk material tray 41, and the slide 48 is in the shape of a truncated cone. When the powder falls onto the surface of the slide 48, it will slide outward to the inner edge area of ​​the bulk material tray 41, preventing the powder from accumulating in the inner middle of the bulk material tray 41.

[0027] To further explain, a sweep rod 49 is rotatably installed at the center of the top of the slide 48, wherein the distance between the bottom of the sweep rod 49 and the bulk material tray 41 does not exceed 2 mm, and the top output end of the motor 44 passes through the slide 48 and is connected to the rotation point of the sweep rod 49, and the sweep rod 49 is controlled by the motor 44 to rotate. The sweep rod 49 can continuously push the powder inside the bulk material tray 41 to ensure that the powder can pass through the through hole 42 and be dispersed downward.

[0028] To further explain, the sweeping rod 49 rotates synchronously with the bottom cover 46 , and the sweeping rod 49 is located above the bulk material opening 47 , so that the sweeping rod 49 can sweep the powder into the bulk material opening 47 to ensure smooth discharge of the material.

[0029] Further explanation: a dust cover is provided on the outside of the motor 44 to prevent powder from entering the motor 44 and causing malfunction.

[0030] See also Figure 5In the utility model, the bottom edge of the bottom cover 46 is slidably connected to the cover 410 by an arc guide rail. The cover 410 can move to cover the surface of the bulk material opening 47 to adjust the size of the bulk material opening 47, thereby controlling the discharge speed. The functionality is strong. The screw hole at the tail of the cover 410 is threadedly connected with a positioning bolt 411, and the positioning bolt 411 can pass through the cover 410 and contact the bottom surface of the bottom cover 46, thereby locking the position of the cover 410.

[0031] Here’s how it works:

[0032] First, the screw conveyor 1 is installed at a predetermined position so that the discharge port 3 is located above the inlet of the mixing device, and then the screw conveyor 1 and the power cord 45 are connected to an external power source to meet its power supply requirements.

[0033] Second, when in use, first start the screw conveyor 1, and then pour the powder into the feed port 2. The screw conveyor 1 pushes the powder along the pipeline through the internal screw until the powder reaches the discharge port 3 and is discharged downward. By setting a uniform dispersing device 4 at the bottom of the discharge port 3, the powder will be discharged downward from the discharge port 3 into the bulk material tray 41. A slide 48 is set in the middle of the inner side of the bulk material tray 41. When the powder falls on the surface of the slide 48, it will slide outward to the inner edge area of ​​the bulk material tray 41 to prevent the powder from accumulating in the middle of the inner side of the bulk material tray 41. At this time, the motor 44 at the bottom of the bracket 43 will drive the bottom cover 46 and the sweeping rod 49 to rotate synchronously. When the dispersing port 47 coincides with the position of the through hole 42, the powder can pass through the through hole 42 and be dispersed downward from the inside of the dispersing port 47; when the bottom cover 46 coincides with the position of the through hole 42, the bottom cover 46 will close the through hole 42 and stop dispersing the powder; as the bottom cover 46 rotates, the powder can be discharged in sequence along the through holes 42 arranged in a ring at the bottom of the dispersing pan 41, thereby expanding the dispersing range of the powder and making the distribution of the powder more evenly diffused to increase the mixing rate of the powder; and the sweeping rod 49 can continuously push the powder inside the dispersing pan 41 to ensure that the powder can continuously move inside the dispersing pan 41 and is not easily accumulated and formed.

[0034] Third, by setting a cover 410 on the bottom surface of the bottom cover 46, when the size of the bulk material opening 47 needs to be adjusted, first loosen the positioning bolt 411, and then move the cover 410 to adjust its position. The cover 410 can move to cover the surface of the bulk material opening 47 to adjust the size of the bulk material opening 47, thereby controlling the discharge speed. It can be adjusted according to work requirements, with strong functionality. Finally, tighten the positioning bolt 411 to lock the position of the cover 410 to complete the adjustment, which is convenient to operate.

[0035] The utility model provides a powder feeding device for a concrete mixing station. A uniform dispersing device 4 is arranged at the bottom end of a discharging port 3. A bottom cover 46 is driven to rotate by a motor 44. When a dispersing port 47 coincides with a through hole 42, powder can pass through the through hole 42 and be dispersed downward from the inner side of the dispersing port 47. When the bottom cover 46 coincides with the through hole 42, the bottom cover 46 closes the through hole 42 and stops dispersing. With the rotation of the bottom cover 46, powder can be discharged in sequence along the through holes 42 arranged in a ring at the bottom of a dispersing plate 41, thereby expanding the dispersing range of powder and making the distribution of powder more evenly diffused to improve the mixing rate of powder. A sealing cover 410 is arranged on the bottom surface of the bottom cover 46. The sealing cover 410 can be moved to cover the surface of the dispersing port 47, so as to adjust the size of the dispersing port 47, thereby controlling the discharging speed. The dispersing port 47 can be adjusted according to work requirements, and the functionality is strong. Finally, the positioning bolt 411 is tightened to lock the position of the sealing cover 410 to complete the adjustment, and the operation is convenient.

[0036] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder material feeding device for a concrete mixing station, comprising a screw conveyor (1), a feed port (2) and a discharge port (3), wherein the feed port (2) is provided at the rear end of the top surface of the screw conveyor (1), and the discharge port (3) is provided at the front end of the bottom surface of the screw conveyor (1); Features: The device also comprises a uniform dispersing device (4), wherein the bottom end of the discharge port (3) is provided with the uniform dispersing device (4), wherein the uniform dispersing device (4) comprises a dispersing plate (41), a through hole (42), a bracket (43), a motor (44), a power line (45), a bottom cover (46) and a dispersing port (47), wherein the bottom end of the discharge port (3) is flange-connected with the dispersing plate (41), wherein the discharge port (3) and the inner side of the dispersing plate (41) are communicated with each other, wherein the bottom surface of the dispersing plate (41) is provided with a through hole (42), wherein the through hole (42) is communicated with the inner side of the dispersing plate (41), and wherein a dispersing plate (41) is provided directly below the dispersing plate (41). A bracket (43), the left and right ends of the bracket (43) are welded and fixed to the bulk material tray (41), a motor (44) is installed at the middle section of the bottom surface of the bracket (43), a power line (45) is connected to the side of the motor (44), and the power line (45) is connected to the outside along the bottom surface of the bracket (43), a bottom cover (46) is sleeved and installed on the surface of the top output end of the motor (44), and the bottom cover (46) is attached to the bottom surface of the bulk material tray (41) to cover the through hole (42), and a bulk material opening (47) is provided through the edge of the bottom surface of the bottom cover (46), and the bulk material opening (47) corresponds to the position of the through hole (42).

2. A powder feeding device for a concrete mixing station according to claim 1, characterized in that: The through holes (42) are arranged in a ring shape at the edge area of ​​the bottom surface of the bulk material tray (41), and the through holes (42) are arranged in at least three rows.

3. The powder feeding device for a concrete mixing station according to claim 1, characterized in that: A slide table (48) is integrally provided in the middle of the inner bottom surface of the bulk material tray (41), and the slide table (48) is in the shape of a truncated cone.

4. A powder feeding device for a concrete mixing station according to claim 3, characterized in that: A sweep rod (49) is rotatably mounted at the center of the top of the slide (48), wherein the distance between the bottom of the sweep rod (49) and the bulk material tray (41) does not exceed 2 mm, and the top output end of the motor (44) passes through the slide (48) and is connected to the rotation point of the sweep rod (49).

5. A powder feeding device for a concrete mixing station according to claim 4, characterized in that: The sweeping rod (49) rotates synchronously with the bottom cover (46), and the sweeping rod (49) is located above the bulk material opening (47).

6. The powder feeding device for a concrete mixing station according to claim 1, characterized in that: The motor (44) is externally covered with a dust cover.

7. The powder feeding device for a concrete mixing station according to claim 1, characterized in that: The bottom edge of the bottom cover (46) is slidably connected to the cover (410) by an arc-shaped guide rail, and the cover (410) can be moved to cover the surface of the bulk material opening (47). A positioning bolt (411) is threadedly connected to the screw hole at the rear of the cover (410), and the positioning bolt (411) can pass through the cover (410) and contact the bottom surface of the bottom cover (46).

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