CN116001102A - An anti-crack concrete mortar preparation device - Google Patents

Abstract

The invention provides a preparation device of anti-cracking concrete mortar, which solves the problems that the distribution state of each component of the concrete mortar is difficult to blend uniformly during preparation and the anti-cracking performance of formed fiber concrete is affected. The stirring device comprises a stirring cylinder, wherein the middle part of the stirring cylinder is rotatably and penetratingly provided with a stirring shaft extending along the left-right direction, one end of the stirring shaft is connected with an output shaft of a rotary driving device, the rotary driving device is arranged outside the stirring cylinder, the rotary driving device is fixedly arranged on a bracket, and the bottom of the bracket is fixedly connected with the top of a bottom frame; the stirring shaft is provided with a plurality of broken layer stirring blades which are arranged at intervals along the length direction of the stirring shaft, each broken layer stirring blade comprises a stirring blade and broken layer plates fixedly arranged on the left side and the right side of the stirring blade, and the stirring blade is fixedly arranged on the circumferential side surface of the stirring shaft along the circumferential direction of the stirring shaft; the broken layer board extends along the radial direction of (mixing) shaft, is equipped with a plurality of broken layer slotted holes that set up along the radial direction interval of (mixing) shaft on the broken layer board.

Description

A kind of anti-crack concrete mortar preparation device

technical field

The invention relates to the field of concrete mortar preparation, in particular to a crack-resistant concrete mortar preparation device.

Background technique

When concrete mortar is used, it is mixed on site. The main components of traditional concrete mortar are cement, water, fine sand and so on. However, this kind of concrete mortar is prone to cracking during use, which affects the performance of buildings. In order to improve the anti-cracking performance of concrete mortar, the method often used this year is to add fibers when preparing concrete mortar. Studies have found that these fibers added to concrete mortar can effectively prevent the expansion of micro-cracks and the formation of macro-cracks inside the concrete. , significantly improved the tensile, bending, impact and fatigue properties of concrete, with good ductility.

In order to solve the cost, green, low-carbon and environmentally friendly natural fibers are often used as the fiber components of fiber concrete mortar. However, due to the characteristics of small diameter, light weight, and easy adhesion and aggregation of natural fibers, it will cause the concrete mortar to lose The distribution state of each component is difficult to reconcile evenly, which affects the crack resistance of the formed fiber concrete.

Contents of the invention

In order to solve the problem in the background technology that the distribution state of the various components of the concrete mortar is difficult to reconcile evenly during preparation, which affects the anti-crack performance of the formed fiber concrete, the present invention proposes a crack-resistant concrete mortar Prepare the device.

The technical solution of the present invention is: a crack-resistant concrete mortar preparation device, including a bottom frame, the top of the bottom frame is provided with a mixing drum, the top of the mixing drum is provided with a plurality of feeding ports, and the bottom of the mixing drum is provided with a discharge hatch;

The middle part of the mixing drum rotates through a stirring shaft extending along the left and right directions. One end of the stirring shaft is connected to the output shaft of the rotating drive device. The rotating drive device is the outside of the mixing drum. The rotating drive device is fixed on the bracket. The bottom is fixedly connected with the top of the chassis;

The stirring shaft is provided with a plurality of broken-layer stirring blades arranged at intervals along its length direction. The broken-layer stirring blades include stirring blades and broken-layer plates fixed on the left and right sides of the stirring blades. The stirring blades are fan-shaped plate structures. The circumferential direction of the stirring shaft is fixedly arranged on the peripheral side of the stirring shaft;

The layer-breaking plate and the stirring blade are perpendicular to each other, and the layer-breaking plate extends along the radial direction of the stirring shaft. The layer-breaking plate is provided with a plurality of layer-breaking slots arranged at intervals along the radial direction of the stirring shaft. The layer-breaking slots are Front and rear transparent slot structure.

Preferably, the broken layer plate includes a first broken layer plate and a second broken layer plate, and the first broken layer plate and the second broken layer plate are respectively fixed on the left and right sides of the stirring blade;

The layer-breaking slots include the first layer-breaking slots and the second layer-breaking slots, the first layer-breaking slots are set on the first layer-breaking plate, the second layer-breaking slots are set on the second layer-breaking plate, and The first layer-breaking slots and the second layer-breaking slots on the left and right sides of a stirring blade are arranged at staggered intervals along the radial direction of the stirring shaft.

Preferably, on the same side of the stirring blade, two layer-breaking plates are fixedly arranged in front and rear at intervals, and the layer-breaking slots on the two layer-breaking plates on the same side are staggered along the radial direction of the stirring shaft.

Preferably, the two broken plates on the same side of the stirring blade are in an inverted figure-eight structure, and a continuous fan-shaped channel is formed between the two broken plates.

Preferably, the mixing drum is a cylindrical structure extending in the left-right direction, and at least two annular slide bars are fixedly arranged on the peripheral side of the mixing drum at intervals along the left-right direction. The rail is set around the mixing drum, and the bottom of the annular slide rail is fixedly connected with the top of the chassis; the side of the mixing drum away from the rotating drive device is fixedly equipped with gears;

The top of one of the circular slide rails is fixed with a second bracket, one end of the second bracket extends above the gear, the bottom of the second bracket is fixed with a telescopic device extending downward, and the lower end of the telescopic device is fixedly connected with a The tooth plate, the tooth plate and the gear mesh with each other, and the telescopic device can drive the mixing drum to reciprocate through the tooth plate and the gear.

Preferably, the rotation driving device includes a forward and reverse motor and a reducer adapted to the forward and reverse motor, and the output shaft of the reducer is fixedly connected to one end of the stirring shaft.

Preferably, the rotation direction of the stirring drum is opposite to the rotation direction of the stirring shaft.

Preferably, the front and rear sides of the stirring blade are fixed with triangular prism-shaped blades.

Preferably, the mixing drum is arranged obliquely on the top of the bottom frame from left to right and from bottom to top.

The advantages of the present invention: when in use, the mixing blades divert the concrete mortar to the left and right sides of the device, and the interlayer interface of the concrete mortar diverted to the left and right sides is broken by the layer-breaking slots on the layer-breaking plate, and flows to the layer-breaking At the same time, when the concrete mortar diverted to the left and right sides is discharged from the rear of the layer-breaking mixing blade, the concrete mortar on the left and right sides will be partially mixed at the junction of the two due to the adjacent area. After repeated cracking and mixing processes, the components in the concrete mortar can be evenly blended, making the crack resistance of the formed fiber concrete more stable.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the main structure schematic diagram of embodiment 1;

Fig. 2 is a schematic structural diagram of the mixing drum in Fig. 1 (flat state);

Fig. 3 is the schematic diagram of the layer-breaking stirring blade and its connecting structure in Fig. 2;

Fig. 4 is a schematic plan view of the left view angle of the layer-breaking stirring blade above in Fig. 3;

In the figure, 1. Underframe, 2. Inclined beam, 3. Mixing drum, 4. Ring slide bar, 5. Ring slide rail, 6. Feed inlet, 7. Stirring drive device, 8. Support, 9. Stirring shaft , 10, ring seat, 11, stirring blade, 1101, first screw hole, 12, first broken layer plate, 1201, first broken layer slot hole, 1202, first connecting plate, 13, second broken layer plate, 1301, the second fracture hole, 1302, the second connecting plate, 14, the discharge hatch, 15, the gear, 16, the tooth plate, 17, the telescopic device, 18, the second support.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment 1: A crack-resistant concrete mortar preparation device, as shown in Fig. 1 and Fig. 2, includes an underframe 1, and the top of the underframe 1 is provided with inclined beams 2 inclined from left to right and from bottom to top. The inclined beam 2 is fixedly provided with two support rods spaced left and right, the support rods are fixedly provided with an annular slide rail 5 , and the inner side of the annular slide rail 5 is slidably connected with an annular slide bar 4 . The ring-shaped sliding bar 4 is fixedly arranged on the peripheral side of the mixing drum 3. The mixing drum 3 is a cylindrical structure extending along the left and right directions. The ring-shaped slide rail 5 is arranged around the mixing drum 3. Tilt settings in upward direction.

The top of the mixing drum 3 is provided with a plurality of feeding ports 6 , and the lower part of the mixing drum 3 is provided with a discharge hatch 14 .

The middle part of the mixing drum 3 rotates through and is provided with a stirring shaft 9 extending in the left-right direction. One end of the stirring shaft 9 is connected to the output shaft of the rotating drive device 7. The rotating drive device 7 in this embodiment includes a forward and reverse motor and a A matching reducer is used to drive the stirring shaft 9 to rotate positively and negatively at intervals during stirring.

The rotary driving device 7 is the outside of the mixing drum 3 , and the rotary driving device 7 is fixed on the support 8 , and the bottom of the support 8 is fixedly connected with the top of the bottom frame 1 .

As shown in Figure 3, the stirring shaft 9 is provided with a plurality of ring seats 10 arranged at intervals along its length direction. A broken-layer stirring blade is fixedly connected between the connecting plates by bolts.

The layer-breaking stirring blade includes a stirring blade 11 and a layer-breaking plate fixed on the left and right sides of the stirring blade 11. The stirring blade 11 is a fan-shaped plate structure, and the stirring blade 11 is provided with two first screw holes 1101 that cooperate with the annular connecting plate. .

The stirring blade 11 is fixedly arranged on the peripheral side of the stirring shaft 9 along the circumferential direction of the stirring shaft 9 . In order to break the concrete mortar easily, the front and rear sides of the mixing blade 11 in this embodiment are fixed with triangular prism blades.

As shown in Figure 3 and Figure 4, the broken layer plate and the stirring blade 11 are perpendicular to each other, and the broken layer plate extends along the radial direction of the stirring shaft 9, and the broken layer plate is provided with a plurality of spacers along the radial direction of the stirring shaft 9 The layer-breaking slots are provided, and the layer-breaking slots have a front-to-back transparent slot structure.

On the same side of the stirring blade 11, two layer-breaking plates are fixedly arranged front and rear at intervals, and the layer-breaking slots on the two layer-breaking plates on the same side are arranged in a dislocation along the radial direction of the stirring shaft 9 . The two broken-layer plates on the same side of the stirring blade 11 are in an inverted figure-eight structure, and a continuous fan-shaped channel is formed between the two broken-layer plates.

Specifically, as shown in Fig. 3 and Fig. 4, in this embodiment, the broken layer plate includes a first broken layer plate 12 and a second broken layer plate 13, and a first connecting plate 1202 is fixed on the first broken layer plate 12. , a second connection plate 1302 is fixed on the second broken layer plate 13,

The left and right sides of the stirring blade 11 are provided with a first broken plate 12 and a second broken plate 13 , and the stirring blade 11 is connected with the first connecting plate 1202 and the second connecting plate 1302 by bolts.

As shown in Figure 4, the first broken layer plate 12 and the second broken layer plate 13 on the same side of the stirring blade 11 are arranged at intervals front and back and have an inverted figure-eight structure, and the first broken layer plate 12 and the second broken layer plate on the same side A continuous fan-shaped channel is formed between the plates 13, so that the concrete mortar flows in the fan-shaped channel.

The layer-breaking slots include a first layer-breaking slot 1201 and a second layer-breaking slot 1301, the first layer-breaking slot 1201 is set on the first layer-breaking plate 12, and the second layer-breaking slot 1301 is set on the second layer-breaking slot On the layer plate 13 , the first layer breaking slots 1201 and the second layer breaking slots 1301 on the left and right sides of the same stirring blade 11 are arranged at intervals along the radial direction of the stirring shaft 9 .

The top of one of the annular slide rails 5 is fixedly provided with a second bracket 18, one end of the second bracket 18 extends above the gear 15, and the bottom of the second bracket 18 is fixedly provided with a telescopic device 17 extending downward. In this embodiment What telescoping device 17 adopted is electric control hydraulic cylinder. The lower end of the telescopic device 17 is fixedly connected with a toothed plate 16 extending downward, and the toothed plate 16 and the gear 15 mesh with each other. The telescopic device 17 can drive the mixing drum 3 to reciprocate through the toothed plate 16 and the gear 15. The rotation angle does not exceed 45 degrees. The rotation direction of the mixing drum 3 is opposite to the rotation direction of the stirring shaft 9 .

The rotary driving device 7 and the telescopic device 17 in this embodiment are all controlled and connected by a PLC controller.

Working principle: before stirring, the interval time and total working hours of the reciprocating motion of the rotary drive device 7 and the telescopic device 17 are set in advance through the PLC controller.

When in use, fine sand, cement, water, natural fiber, etc. are added into the mixing drum 3 in proportion through different feeding ports 6 . When stirring, the rotary drive device 7 and the telescopic device 17 are controlled to reciprocate by the PLC controller.

The mixing blade 11 diverts the concrete mortar to the left and right sides of the device, and the interlayer interface of the concrete mortar diverted to the left is broken by the first layer breaking slot 1201, and after flowing into the fan-shaped channel, a mixing is performed, and the mixed concrete Under the action of centrifugal force, part of the mortar leaves the fan-shaped channel from the upper and lower outlets and the outer opening of the fan-shaped channel, and the rest moves backwards under the action of the second layer-breaking slot 1301 that is misplaced from the first layer-breaking slot 1201 Next, the layer is broken for the second time, and the secondary mixing is carried out behind the second layer-breaking slot 1301.

The concrete mortar diverted to the right side is basically similar to the mixing process on the left side mentioned above. At the same time, when the concrete mortar diverted to the left and right sides is discharged from the rear of the layer-breaking mixing blade, due to the concrete mortar on the left and right sides flowing out, the layer height The differences (the second layer-breaking slot 1301 on the left and the first layer-breaking slot 1201 on the right) make the concrete mortar diverted to the left and right sides partially mix at the junction of the two due to the adjacent area.

While stirring, the telescopic device 17 performs reciprocating telescopic movement, and through the transmission of the tooth plate 15 and the gear 14, the mixing drum 3 is driven to reciprocate and rotate at the same time. The single rotation angle of the mixing drum 3 does not exceed 45 degrees, so that it is close to the mixing drum 3 The concrete mortar of the wall body can be reversed relative to the rotation direction of the mixing shaft 9, which can not only prevent the concrete mortar close to the wall of the mixing drum 3 from adhering due to poor fluidity, but also further improve the strength of the wall near the mixing drum 3. Mixing uniformity of concrete mortar.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be limited by the appended claims All changes within the meaning and range of equivalents of the claimed elements are intended to be embraced in the invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. A crack-resistant concrete mortar preparation device, characterized in that: it comprises an underframe (1), the top of the underframe (1) is provided with a mixing drum (3), and the top of the mixing drum (3) is provided with a plurality of feeding The feed port (6), the lower part of the mixing drum (3) is provided with a discharge hatch (14); The middle part of the mixing drum (3) rotates through a stirring shaft (9) extending in the left and right direction, one end of the stirring shaft (9) is connected to the output shaft of the rotating drive device (7), and the rotating drive device (7) is for stirring Outside the barrel (3), the rotary drive device (7) is fixed on the bracket (8), and the bottom of the bracket (8) is fixedly connected with the top of the chassis (1); The stirring shaft (9) is provided with a plurality of layer-breaking stirring blades arranged at intervals along its length direction. The layer-breaking stirring blades include stirring blades (11) and layer-breaking plates fixed on the left and right sides of the stirring blade (11). The blade (11) is a fan-shaped plate structure, and the stirring blade (11) is fixedly arranged on the peripheral side of the stirring shaft (9) along the circumferential direction of the stirring shaft (9); The broken layer plate and the stirring blade (11) are perpendicular to each other, and the broken layer plate extends along the radial direction of the stirring shaft (9). Layer slots and layer-breaking slots are front and rear transparent slot structures. 2. A crack-resistant concrete mortar preparation device according to claim 1, characterized in that: the rupture board comprises a first rupture board (12) and a second rupture board (13), and the first rupture board (12) and the second broken layer plate (13) are respectively fixed on the left and right sides of the stirring blade (11); The layer breaking slots include a first layer breaking slot (1201) and a second layer breaking slot (1301), the first layer breaking slot (1201) is set on the first layer breaking plate (12), and the second layer breaking slot The slot hole (1301) is set on the second layer breaking plate (13), and the first layer breaking slot hole (1201) and the second layer breaking slot hole (1301) on the left and right sides of the same stirring blade (11) are arranged along the stirring axis (9) The dislocation interval in the radial direction is set. 3. A kind of anti-cracking concrete mortar preparation device as claimed in claim 1 or 2, characterized in that: on the same side of the stirring blade (11), there are two broken layer boards fixed at intervals front and back, and the two on the same side The layer-breaking slots on the layer-breaking plate are misplaced along the radial direction of the stirring shaft (9). 4. A crack-resistant concrete mortar preparation device as claimed in claim 3, characterized in that: the two broken plates on the same side of the stirring blade (11) have an inverted figure-eight structure, and the two broken plates A continuous fan-shaped channel is formed between them. 5. A crack-resistant concrete mortar preparation device according to claim 1, 2 or 4, characterized in that: the mixing drum (3) is a cylindrical structure extending along the left and right directions, and the surrounding side of the mixing drum (3) There are at least two ring-shaped sliders (4) arranged at intervals along the left and right directions, the ring-shaped sliders (4) slide on the ring-shaped slide rail (5), and the ring-shaped slide rail (5) is set around the mixing drum (3) , the bottom of the annular slide rail (5) is fixedly connected to the top of the underframe (1); the side of the mixing drum (3) away from the rotary drive device (7) is fixedly provided with a gear (15); The top of one of the circular slide rails (5) is fixed with a second bracket (18), one end of the second bracket (18) extends above the gear (15), and the bottom of the second bracket (18) is fixed with a Extended telescopic device (17), the lower end of the telescopic device (17) is fixedly connected with a tooth plate (16) extending downward, the tooth plate (16) and the gear (15) mesh with each other, and the telescopic device (17) passes through the tooth plate ( 16) and the gear (15) can drive the mixing drum (3) to reciprocate. 6. A crack-resistant concrete mortar preparation device according to claim 5, characterized in that: the rotary drive device (7) includes a forward and reverse motor and a reducer adapted to the forward and reverse motor, and the output of the reducer The shaft is fixedly connected with one end of the stirring shaft (9). 7. The anti-cracking concrete mortar preparation device according to claim 6, characterized in that: the rotation direction of the mixing drum (3) is opposite to the rotation direction of the mixing shaft (4). 8. A crack-resistant concrete mortar preparation device according to claim 1, 2 or 4, characterized in that: the front and rear sides of the mixing blade (11) are fixed with triangular prism-shaped blades. 9. A crack-resistant concrete mortar preparation device as claimed in claim 1, 2 or 4, characterized in that: the mixing drum (3) is arranged on the bottom frame (1) inclined from left to right and from bottom to top )the top of.

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