CN217765951U - Self-compaction backfill material mobility detection device - Google Patents

Abstract

The utility model discloses a self-compaction backfill material mobility detection device, including the agitator, be provided with feed inlet, discharge gate and water inlet on the agitator, set up rotatable (mixing) shaft in the agitator, the (mixing) shaft is rotatory under the motor drive that is located the agitator top, and (mixing) shaft circumference sets up a plurality of stirring blade discs, is equipped with pressure sensor on the stirring blade disc. The device can quantify the fluidity of the self-compacting backfill material in time on a construction site through the pressure sensor arranged on the stirring cutter head, and is simple to operate.

Description

Self-compaction backfill material mobility detection device

Technical Field

The utility model relates to a self-compaction cement soil backfills the engineering field, specifically is a self-compaction backfill material mobility detection device.

Background

In the construction of groove backfill engineering, dead angles exist between interfaces of traditional backfill materials (soil filler, graded gravel filler and the like) and a structure, so that problems that a pipeline area is difficult to backfill, a narrow area is difficult to compact, the quality of rolling compaction is difficult to guarantee, the backfill is not solid and is easy to settle and the like are often encountered, and engineering diseases are often induced.

The self-compacting backfill material is a high-fluidity backfill material which takes cement, muck, additives and adhesives as main raw materials. The adhesive can form certain strength after being cured, and is suitable for backfilling of various pipelines and grooves.

The fluidity of the backfill material is a key factor influencing the backfill quality, and the flowing backfill material can be fully filled into a dead angle of a structure interface by exerting the good fluidity of the flowing backfill material in the backfill engineering so as to fulfill the aim of filling compactly. In the actual using process, because the contents of organic matters in the slag soil are different, even if the mixture ratio is the same, the flowability of the fluidized backfill materials of different batches is greatly different.

The backfill material adopts engineering muck, so that the flowability of the configured flowable backfill material has larger difference. The construction site cannot detect the fluidity of the backfill material, so that the backfill effect in actual construction is not ideal.

At present, a standard test method exists for testing the flow property of cement-based materials such as cement concrete, cement stabilized macadam and the like, and the standard test method is specifically seen in cement and cement concrete test regulations (JTG 3420-2020). However, the cement concrete fluidity detection method is difficult to apply in practical engineering due to the following reasons:

on-site construction sites often lack laboratories, and the fluidity of the fluid state soil cement backfill materials configured by on-site muck is difficult to detect.

The fluid state cement soil is generally prepared from local materials, and the difference of moisture and clay contained in each batch of muck exists in the process of preparing the fluid state cement soil, so that the difference of the fluidity of the fluid state cement soil backfill material prepared on site and the fluidity of the backfill material prepared in a laboratory exists. Part of backfill engineering is located in remote areas and lacks an indoor laboratory for fluidity detection, so that the fluidity of self-compacting fluid state cement soil of different mixing batches is different.

For the above reasons, there is a need to develop an apparatus that can perform in-situ detection of backfill material flowability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self-compaction backfill material mobility detection device aims at solving the problem that the scene can't detect self-compaction backfill material mobility performance at any time.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a self-compaction backfill material mobility detection device, includes the agitator, is provided with feed inlet, discharge gate and water inlet on the agitator, set up rotatable (mixing) shaft in the agitator, the (mixing) shaft is rotatory under the motor drive that is located the agitator top, and (mixing) shaft circumference sets up a plurality of stirring blade discs, is equipped with pressure sensor on the stirring blade disc.

Specifically, the motor is a positive and negative motor and is connected with a speed controller.

Specifically, pressure sensor passes through the wire with the display screen that sets up in the agitator top and is connected, and the display screen is used for showing the pressure size of stirring blade disc reversal in-process pressure sensor feedback.

Specifically, the stirring cutter head comprises a stirring cutter plate A and a stirring cutter plate B, wherein the stirring cutter plate A is welded with a stirring shaft, a groove for accommodating a pressure sensor is formed in the stirring cutter plate A, and the shape of the stirring cutter plate B is matched with the shape of the groove formed in the stirring cutter plate A and used for sealing the groove.

Specifically, a spoiler is further arranged in the stirring barrel, is fixed on the inner side of the stirring barrel and has a minimum distance with the stirring cutter head not smaller than 5cm.

The beneficial effects of the utility model are that:

1. through the matching use of the pressure sensor, the display screen and the speed controller, the flowability of the self-compacting backfill material can be displayed and configured on a construction site, and the problem that the flowability of the self-compacting backfill materials of different batches is different is avoided.

2. The mobile detection of self-compaction backfill material often is the on-the-spot sample in the past, then transports indoor laboratory and surveys, and check-out time is long, and is inefficient, is difficult to play the guide effect to the configuration of on-the-spot self-compaction backfill material, the utility model discloses can show self-compaction backfill material's mobility in real time at self-compaction soil cement configuration in-process, guarantee the timeliness and the economic nature that self-compaction backfill material mobility detected.

3. The whole detection of the self-compacting backfill material can be completed in the configuration process, no additional operation is needed, no professional experimenter is needed, and the whole construction process is simplified.

Drawings

Fig. 1 is a schematic view of a fluidity detection device for a self-compacting backfill material provided by the present invention;

FIG. 2 is a schematic structural diagram of a stirring cutter head;

fig. 3 is a perspective view of the agitator disk.

In the figure: 1. a stirring barrel; 2. a feed inlet; 3. a speed controller; 4. a motor; 5. a display screen; 6. a water inlet; 7. a stirring shaft; 8. a stirring cutter head; 9. a spoiler; 10. a discharge port; 11. a stirring blade A; 12. a stirring blade B; 13. a pressure sensor; 14. and (4) conducting wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-fig. 3, a self-compaction backfill material mobility check out test set, including agitator 1, 1 bottom of agitator sets up the landing leg, is provided with feed inlet 2, discharge gate 10 and water inlet 6 on the agitator 1, and wherein feed inlet 2 is located the side top of agitator 1, and discharge gate 10 is located agitator 1 under, and water inlet 6 is located agitator 1's side top, set up rotatable (mixing) shaft 7 in the agitator 1 for the mixed stirring of water, additive, dregs and cement to form self-compaction backfill material, the (mixing) shaft 7 is rotatory under the motor 4 drive that is located agitator 1 top, and (mixing) shaft 7 circumference sets up the stirring blade disc 8 of a plurality of perpendicular to (mixing) shafts 7, is equipped with pressure sensor 13 on the stirring blade disc 8.

When the stirring shaft 7 rotates, the self-compacting backfill material applies pressure to the pressure sensor 13 on the stirring cutter head 8, the fluidity of the self-compacting backfill material can be quantified according to the pressure of the pressure sensor 13, specifically, the reading of the pressure sensor is calibrated by adopting a calibration method, self-compacting cement soil slurry with different flowing values is configured according to equal gradient, then the self-compacting cement soil slurry is reversed in a detection device at the rotating speed of 10 revolutions per minute, after the reading of the pressure sensor is stable, the reading of the pressure sensor corresponds to the flowing value of the corresponding slurry, and each pressure value corresponds to a specific slurry flowing value; and when the subsequent field measurement is carried out, the actual pressure value is measured to obtain the corresponding slurry flow value.

The motor 4 is a positive and negative motor and can drive the stirring shaft 7 to rotate clockwise and anticlockwise respectively, the rotating directions of the stirring shaft 7 during stirring and pressure measurement are different, wherein the positive rotation of the cutter head is used for fully stirring the slurry, and the reverse rotation of the cutter head is used for rapidly measuring the fluidity of the slurry.

The pressure sensor 13 is connected with the display screen 5 arranged above the stirring barrel 1 through a lead 14, the display screen 5 is used for displaying the pressure fed back by the pressure sensor 13 in the process of reversing the stirring cutter disc 8, meanwhile, the fluidity of the self-compacting backfill material is quantified according to the pressure of the pressure sensor 13, and the larger the pressure is, the smaller the fluidity of the self-compacting backfill material is.

Stirring blade disc 8 is including stirring cutting board A11 and stirring cutting board B12, stirring cutting board A11 welds with the (mixing) shaft, is provided with the recess that holds pressure sensor 13 on the stirring cutting board A11, and the shape of stirring cutting board B12 suits with the recess shape that sets up on the stirring cutting board A11 for pressure sensor 13 imbeds and seals it behind the stirring cutting board A11, avoids pressure sensor 13 and self-compaction backfill material direct contact, and is concrete, stirring cutting board B12 is articulated with stirring cutting board A11.

Still be provided with speed controller 3 above agitator 1, speed controller 3 is connected through the wire with motor 4 for control stirring shaft's stirring speed, the (mixing) shaft both can with motor lug connection, also can the transmission be connected, in this embodiment, the axis of (mixing) shaft is unanimous with the axis of agitator, it is connected with the motor that the agitator top set up through the shaft coupling after the agitator is worn out to its top, after the intensive mixing material obtains self-compaction backfill material, speed controller can control the (mixing) shaft, make the (mixing) shaft with 90 revolutions/min corotation, 10 revolutions/min reversal. The slurry rotates at a higher rotating speed in the stirring process, so that the stirring time can be reduced; the cutter head rotates at a lower rotating speed in the process of measuring the fluidity of the slurry, so that the flow speed of the slurry can be quickly stabilized.

Still set up spoiler 9 in the agitator 1, spoiler 9 be fixed in agitator 1 inboard and with the stirring blade disc 8 between minimum distance must not be less than 5cm, impel the stirring in-process thick liquid to produce the turbulent flow, do benefit to stirring material intensive mixing, it is specific, two are no less than to the quantity of spoiler 9, encircle the inboard setting of agitator 1.

The utility model discloses agitating unit based on self-compaction backfill material will stir the blade disc and flow nature test structure (pressure sensor) is integrated together, can master self-compaction backfill material's mobility in real time at self-compaction backfill material job site mix in-process, need not additionally to carry out detection operation, has simplified whole work progress.

The materials are placed in a mixing drum according to the proportion, and then a motor is started to drive a cutter disc to rotate positively at the rotating speed of 90 revolutions per minute, so that the serous fluid is quickly and fully mixed. And after the slurry in the mixing drum is fully mixed, the motor is turned off, the motor is started to rotate reversely when the flow rate of the slurry is 0, and the stirring speed of the cutter head in the reverse rotation process is controlled to be 10 revolutions per minute. The impeller is rotated at a relatively low rotational speed in order to quickly maintain the slurry in line with the rotational speed of the impeller. In the process, the pressure indication of the cutter head pressure sensor is gradually kept stable, and the fluidity of the self-compacting slurry can be measured according to the pressure value measured by the pressure sensor on the cutter head.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a self-compaction backfill material mobility detection device, its characterized in that, includes the agitator, is provided with feed inlet, discharge gate and water inlet on the agitator, set up rotatable (mixing) shaft in the agitator, the (mixing) shaft is rotatory under the motor drive that is located the agitator top, and (mixing) shaft circumference sets up a plurality of stirring blade discs, is equipped with pressure sensor on the stirring blade disc.

2. The apparatus for detecting flowability of self-compacting backfill material according to claim 1, wherein the motor is a positive and negative motor connected with a speed controller.

3. The device for detecting the flowability of the self-compacting backfill material according to claim 1, wherein the pressure sensor is connected with a display screen arranged above the stirring barrel through a lead, and the display screen is used for displaying the pressure fed back by the pressure sensor in the process of reversing the stirring cutter head.

4. The device for detecting the flowability of the self-compacting backfill material according to claim 1, wherein the stirring cutter head comprises a stirring cutter plate A and a stirring cutter plate B, the stirring cutter plate A is fixedly connected with the stirring shaft, a groove for accommodating the pressure sensor is formed in the stirring cutter plate A, and the shape of the stirring cutter plate B is adapted to the shape of the groove formed in the stirring cutter plate A and used for sealing the groove.

5. The apparatus for detecting the flowability of the self-compacting backfill material according to claim 1, wherein a spoiler is further disposed in the agitator, and the spoiler is fixed inside the agitator and spaced from the agitator disk by a minimum distance of not less than 5cm.

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