CN211877208U

CN211877208U - Concrete metering equipment

Info

Publication number: CN211877208U
Application number: CN201922370132.4U
Authority: CN
Inventors: 张行; 吴家杰; 肖五秀
Original assignee: Wuhan Union Construction Concrete Co ltd
Current assignee: Wuhan Union Construction Concrete Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-11-06
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a concrete metering equipment, it is including the support frame that is used for weighing the scale bucket of raw materials and is used for supporting the scale bucket, the support frame below is equipped with the supporting seat, be equipped with pressure sensor between support frame and the supporting pedestal, be equipped with on the scale bucket inner wall and scrape wall mechanism, be equipped with on the scale bucket inner wall and blow the material device, the scale bucket lower extreme is equipped with and seals the discharge gate. The utility model discloses have the more accurate effect of measurement.

Description

Concrete metering equipment

Technical Field

The utility model relates to a concrete production facility especially relates to a concrete metering equipment.

Background

At present, concrete is prepared by mixing and stirring a plurality of raw materials according to a certain proportion, different raw materials and different proportions can generate great influence on the property of the concrete, so that in the large-scale automatic production of the concrete, in order to improve the performance of the concrete, the method firstly needs to improve how to accurately and timely control the feeding of the raw materials in the feeding of the concrete production, accurately measures the raw materials, controls the mixing proportion of the raw materials of the concrete, and obtains the high-performance concrete.

At present, chinese patent of market publication No. CN207027895U discloses a concrete mixing plant raw materials feed arrangement, including the scale bucket that is used for bearing the raw materials and the support frame that is used for supporting the scale bucket, be provided with the sensor that at least three is used for supporting the scale bucket and measures the raw materials weight that bears in the scale bucket on the support frame, the bottom of scale bucket has first discharge gate and installs the vibrating motor who allies oneself with the sensor electricity in the lateral wall of scale bucket, be provided with the vibration bolster between sensor and the scale bucket.

The technical scheme has the following defects: raw materials in the scale bucket are easily gathered and accumulated on the inner wall of the scale bucket, and the vibration motor is used for guiding insufficient vibration force in automatic production to cause that the raw materials on the inner wall cannot be discharged, thereby causing incorrect metering.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims at providing a concrete measuring equipment. Its advantage is high metering accuracy.

The above object of the present invention is achieved by the following technical solutions: a concrete metering device comprises a scale bucket for weighing raw materials and a support frame for supporting the scale bucket, wherein a support seat is arranged below the support frame, a pressure sensor is arranged between the support frame and a support base, a wall scraping mechanism is arranged on the inner wall of the scale bucket, a discharge hole is formed in the lower end of the scale bucket, and a valve is arranged on the discharge hole;

wall scraping mechanism includes a plurality of scalable knife rests, the fixed scraper that is equipped with of knife rest outer fringe, take in turn between the knife rest and put and constitute circular outer fringe, circular outer fringe and the laminating of scale bucket inner wall, the knife rest is kept away from scraper one end and is fixed with circular feed port, be fixed with hollow inlet pipe on the circular feed port, hollow inlet pipe outer wall is equipped with the screw thread, the fixed motor that is equipped with on the scale bucket outer wall, the motor passes through screw rod transmission with hollow inlet pipe outer wall screw thread and is connected, the inlet pipe top is fixed with infundibulate guide mouth.

Through adopting above-mentioned technical scheme, the raw materials gets into the scale bucket from feed hopper and feeding roller, when pressure sensor detects raw materials weight and reaches, open the discharge gate of funnel below, when pressure sensor experiences pressure drop to a certain value, the motor rotates to drive and scrapes the rotatory inner wall mechanism that hangs downwards of wall mechanism, make adnexed raw materials on the inner wall scrape out, the accuracy of this ejection of compact has been ensured, the accuracy of next time raw materials measurement has been improved simultaneously, the rotatory downward scale bucket inner wall that can clean more of scraper simultaneously, thereby prevent that the raw materials polymerization from adhering to on the inner wall.

The present invention may be further configured in a preferred embodiment as: the knife rest comprises fan ribs which are sleeved together, the small ends of the fan ribs are provided with openings for other fan ribs to slide, the tops of the fan ribs are connected with a top plate through bolts, and springs are arranged among the side walls of the outer edges of the fan ribs.

Through adopting above-mentioned technical side, realize flexible through the spring between the fan bone, scrape the wall mechanism more down the scraper and weigh the pressure between the bucket inner wall more big, the laminating is inseparabler, can prevent to flow from the gap from the accumulational raw materials of scraper department too much to prevent that the raw materials can not all discharge, and then improve the accuracy of measurement.

The present invention may be further configured in a preferred embodiment as: the outer edge of the knife rest is fixedly provided with a rotating wheel which is abutted against the inner wall of the scale bucket, and the included angle between the rotating wheel and the vertical direction is the same as the lead angle of the threads on the hollow feeding pipe.

Through adopting above-mentioned technical scheme, the knife rest outer fringe is equipped with the runner, and when the knife rest was rotatory down along with hollow feeding roller, the knife rest received one and revolved to power down, because the angle of inclination and the screw lead angle of gyro wheel are unanimous, can reduce the frictional force between knife rest and the scale bucket inner wall to make the knife rest slide down more easily and scrape the scale bucket inner wall.

The present invention may be further configured in a preferred embodiment as: the tool holder is inclined downwards relative to the hollow feed tube.

Through adopting above-mentioned technical scheme, the knife rest is downward for hollow inlet pipe slope, can make things convenient for the knife rest when scraping the scale bucket inner wall in the downward stroke, and the knife rest is compressed shrink more easily, and the contained angle between cutter body and the inner wall is less than scale bucket inner wall and vertical direction contained angle simultaneously, and the cutter body cutting edge hangs the raw materials in stretching into the raw materials that adsorbs on the scale bucket inner wall and attaches a piece gap more easily when making things convenient for the cutter body to scrape down, has improved and has scraped the effect to improve the measurement effect.

The present invention may be further configured in a preferred embodiment as: the scraper is characterized in that an air blowing groove is formed in the inner wall of the scale bucket below the lowest position of the scraper, a shielding plate is arranged on the air blowing groove and fixedly connected with the inner wall of the scale bucket, an air inlet is formed in the outer wall of the scale bucket, an air blower is fixed on the supporting seat and is connected with the air inlet through a pipeline, and the air blower is electrically connected with the control console.

Through adopting above-mentioned technical scheme, pile up the raw materials that scrapes when the scraper and do not drop in the below, produce the scratch on the inner wall when the scraper is scraped for a long time simultaneously, the structure of giving vent to anger this moment can blow off the raw materials in dead angle and the scratch to improve the effect of scraping, increase the measurement accuracy.

The present invention may be further configured in a preferred embodiment as: the air inlet is an annular wave air blowing groove, the number of the air inlets is not less than 3, and the air inlets are uniformly distributed on the outer wall of the scale bucket.

Through adopting above-mentioned technical scheme, the gas blow tank design of annular wave groove can not be fixed because of the wind direction, and produces the air current dead angle, can blow to gas blow tank top baffle position each other to prevent that baffle department from long-pending material, the air inlet of evenly distributed more than 3 simultaneously guarantees that the pressure of blowing of annular wave gas outlet is stable unanimous, improves and blows off stability, thereby improves the measurement accuracy.

The present invention may be further configured in a preferred embodiment as: the balance scale is characterized in that a pressure equalizing chamber is arranged in the scale bucket wall, the cross section of the pressure equalizing chamber is w-shaped, and the air inlet and the air outlet are respectively connected with two ends of the pressure equalizing chamber.

Through adopting above-mentioned technical scheme, set up W type surge-chamber in the scale bucket wall, the air inlet of air inlet is sheltered from the direction through the surge-chamber and is made back pressure and wind speed relatively balanced blow from the ring channel steadily to the scale bucket in, has prevented that certain wind speed is great and produces the dead angle of blowing, can not blow off the raw materials, and then has improved the measurement accuracy.

The present invention may be further configured in a preferred embodiment as: the automatic weighing device is characterized in that a control console is arranged on the supporting seat, a position receiver is arranged on the outer wall of the scale bucket, a position transmitter is arranged on the knife rest, and the position transmitter, the position receiver, the pressure sensor, the motor and the air blower are electrically connected with the control console.

Through adopting above-mentioned technical scheme, PLC integrated electric console can effectively get up the start-up time linkage between each motor, can be better scrape and blow off to improve the measurement accuracy.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the raw materials attached to the inner wall can be effectively cleaned by adopting the wall scraping mechanism and the lower blowing mechanism, so that the metering accuracy is improved;

2. the setting of the inner wall pressure equalizing chamber ensures that the blowing effect is more uniform and dead angles are not generated, so that the raw materials are discharged more completely, and the metering accuracy is further improved.

Drawings

FIG. 1 is a schematic view of an explosive structure of the present embodiment;

FIG. 2 is a schematic view of a transmission mechanism of the wall scraping mechanism of the embodiment;

fig. 3 is a sectional view of the wall scraping mechanism of the present embodiment;

FIG. 4 is a schematic view of the internal structure of the scale bucket of the present embodiment;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

In the figure, 1, a scale bucket; 2. a support frame; 3. a supporting seat; 4. a pressure sensor; 5. a wall scraping mechanism; 6. a discharge port; 7. a material guide port; 8. a tool holder; 9. a scraper; 10. a feed port; 11. a hollow feed pipe; 12. a motor; 13. a console; 14. a fan framework; 15. a spring; 16. a rotating wheel; 17. an air inlet; 18. an air blowing groove; 19. a blower; 20. a pressure equalizing chamber; 21. a position receiver; 22. a position transmitter; 23. a shielding plate; 24. a top plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a concrete metering device, including the scale bucket 1 that is used for weighing the raw materials to and be used for supporting the support frame 2 of scale bucket 1, support frame 2 below is equipped with supporting seat 3, is equipped with pressure sensor 4 between supporting seat 3 and the support frame 2. An air blower 19 is fixed on the supporting seat 3, three air inlets 17 are arranged on the outer wall of the scale bucket 1, the air blower 19 is connected with the air inlet through a pipeline, a motor 12 is fixed on the scale bucket 1, a discharge port 6 is arranged below the scale bucket 1, and a valve is arranged on the discharge port 6. The supporting seat 3 is provided with a PLC console 13, and the pressure sensor 4, the motor 12 and the blower 19 are electrically connected with the console 13.

Referring to fig. 1 and 2, a rotatable wall scraping mechanism 5 is arranged in the scale bucket 1, the wall scraping mechanism 5 comprises a plurality of telescopic knife rests 8, scrapers 9 attached to the inner wall of the scale bucket 1 are arranged below the outer edges of the knife rests 8, and an included angle between each scraper 9 and the inner wall of the scale bucket 1 is smaller than an included angle between the inner wall of the scale bucket 1 and the vertical direction, so that the scrapers 9 can more easily extend into attached raw material blocks on the inner wall of the scale bucket 1 to scrape off raw materials. Referring to fig. 3, the tool holder 8 includes a plurality of fan ribs 14 of different sizes, the fan ribs 14 are hollow fan ribs 14, the fan ribs 14 include a large end and a small end, the small end of the fan ribs 14 is provided with an opening for other fan ribs 14 to slide, a spring 15 is arranged between the side walls of the large end of the fan ribs 14, so that the fan ribs 14 are in an extended state under the action of the spring 15, the outer edge rotating wheel 16 of the tool holder 8 is always attached to the inner wall of the scale bucket 1, and the scraper 9 can always scrape the inner wall of the scale bucket 1. The fan ribs 14 are provided with a detachable top plate 24 for disassembly and assembly. The knife rests 8 are obliquely and alternately overlapped to form a circular outer edge, the side wall of the outer edge of the knife rest 8 is fixedly provided with a rotating wheel 16 vertical to the inner wall of the scale bucket 1, the rotating wheel 16 is abutted against the inner wall of the scale bucket 1, and the rotating wheel 16 has an inclined angle in the vertical direction.

A circular feeding hole 10 is fixed on one side, far away from the scraper 9, of the knife rest 8, a hollow feeding pipe 11 is fixed on the feeding hole 10, a funnel-shaped material guide opening 7 is arranged above the hollow feeding pipe 11, rotary threads are arranged on the outer wall of the hollow feeding pipe 11, and the motor 12 is in transmission connection with the hollow feeding pipe 11 through a worm gear. The motor 12 rotates to drive the hollow feeding pipe 11 to rotate downwards, and the hollow feeding hole 10 drives the scraper 9 at the outer edge of the knife rest 8 to rotate downwards to scrape and sweep the inner wall of the scale bucket 1. The inclination angle of the rotating wheel 16 in the vertical direction is consistent with the thread lead angle of the rotating thread on the outer wall of the hollow feeding pipe 11, so that the resistance borne by the tool rest 8 when the tool rest rotates downwards along with the hollow feeding pipe 11 is smaller. The knife rest 8 inclines downwards relative to the hollow feeding pipe 11, so that in the downward compression process of the knife rest 8, the included angle between the force of the inner wall of the scale bucket 1 acting on the knife rest 8 and the knife rest 8 is smaller, the acting effect is more obvious, and the knife rest 8 is more easily telescopic.

Referring to fig. 4 and 5, a position transmitter 22 (which may be a magnetic proximity switch SP1191 series) is disposed on the scraper 9, two position receivers 21 (SP 1191) are disposed on the outer wall of the scale bucket 1, and the position transmitter 22 and the position receivers 21 are electrically connected to the console 13. The inner wall of the scale bucket 1 below the lowest position of the scraper 9 is provided with a blowing groove 18, the blowing groove 18 is an annular wave blowing groove 18, an inclined baffle plate 23 is arranged above the blowing groove 18, so that dead corners in the scale bucket 1 cannot be blown by wave interaction, and the baffle plate 23 can prevent the blowing groove 18 from being blocked by the scraped raw materials. A W-shaped annular pressure equalizing chamber 20 with a cross section is arranged in the wall of the scale bucket 1, one side of the pressure equalizing chamber 20 is connected with the air blowing groove 18, and the other side of the pressure equalizing chamber 20 is connected with the air inlet 17, so that the phenomenon that the air blowing pressure of the air blowing groove 18 is uneven and backflow dead angles are generated can be prevented through the pressure equalizing chamber 20. The scale bucket containing the pressure equalizing chamber can be made into a half by a semicircular grinding tool and then assembled.

The implementation principle of the embodiment is as follows: send the raw materials into scale bucket 1 through the guide funnel on hollow inlet pipe 11 and weigh, when pressure sensor 4 between support frame 2 and the supporting seat 3 detects raw materials weight in the funnel unanimous with the demand, open discharge gate 6 of scale bucket 1 below, pour the raw materials into the stirring pond, when pressure sensor 4 detects pressure and reduces a definite value, 13 control machine 12 of control cabinet starts, through the transmission of turbine worm, it is rotatory downwards to drive hollow inlet pipe 11, hollow inlet pipe 11 drives scraper 9 of knife rest 8 and the 8 outer fringe below of knife rest and scrapes the raw materials of sweeping scale bucket 1 inner wall on with the inner wall downwards. The runner 16 on the lateral wall of the outer edge of the knife rest 8 rolls downwards along the inner wall of the scale bucket 1 in a rotating way, because the cross-sectional area of the inner wall of the scale bucket 1 is gradually reduced, the fan ribs 14 on the knife rest 8 are mutually compressed, the scraper 9 is always tightly attached to the inner wall of the scale bucket 1 under the action force of the spring 15 between the fan ribs 14, when the position receiver 21 on the outer wall of the scale bucket 1 receives the scraper 9 and goes down to the lowest position, the control console 13 stops the motor 12 from rotating, the air blower 19 is started at the moment, the scraper blows to the W-shaped pressure equalizing chamber 20 through three air inlets, after pressure equalization is carried out, the scraper blows out through the annular wave air blowing groove 18, then the baffle 23 which inclines downwards blocks the scraper, the discharge hole 6 at the bottom of the air blowing scale bucket 1 is used for blowing out.

The embodiments of the present invention are the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete metering equipment, is including being used for weighing scale bucket (1) of raw materials and being used for supporting support frame (2) of scale bucket (1), support frame (2) below is equipped with supporting seat (3), be equipped with pressure sensor (4), its characterized in that between support frame (2) and the supporting pedestal: a wall scraping mechanism (5) is arranged on the inner wall of the scale bucket (1), a discharge hole (6) is arranged at the lower end of the scale bucket (1), and a valve is arranged on the discharge hole;

scrape wall mechanism (5) and include a plurality of scalable knife rest (8), knife rest (8) outer fringe is fixed and is equipped with scraper (9), take in turn between knife rest (8) and put the circular outer fringe of constitution, circular outer fringe and scale fill (1) inner wall laminating, knife rest (8) are kept away from scraper (9) one end and are fixed with circular feed port (10), be fixed with hollow inlet pipe (11) on circular feed port (10), hollow inlet pipe (11) outer wall is equipped with the screw thread, the fixed motor (12) that is equipped with on scale fill (1) outer wall, motor (12) are connected through screw drive with hollow inlet pipe (11) outer wall screw thread, the inlet pipe top is fixed with infundibulate guide opening (7).

2. A concrete metering apparatus as claimed in claim 1, wherein: the tool rest (8) comprises fan ribs (14) which are sleeved together, the small ends of the fan ribs (14) are provided with openings for other fan ribs (14) to slide, the tops of the fan ribs (14) are connected with top plates (24) through bolts, and springs (15) are arranged between the outer edge side walls of the fan ribs (14).

3. A concrete metering apparatus as claimed in claim 2, wherein: the outer edge of the knife rest (8) is fixedly provided with a rotating wheel (16), the rotating wheel (16) is abutted against the inner wall of the scale bucket (1), and the included angle between the rotating wheel (16) and the vertical direction is the same as the thread lead angle on the hollow feeding pipe (11).

4. A concrete metering apparatus as claimed in claim 1, wherein: the tool holder (8) is inclined downwards relative to the hollow feed pipe (11).

5. A concrete metering apparatus as claimed in claim 1, wherein: be equipped with air blowing groove (18) on scraper (9) lower lowest below scale bucket (1) inner wall, be equipped with shielding plate (23) on air blowing groove (18), shielding plate (23) and scale bucket (1) inner wall fixed connection, be equipped with air inlet (17) on scale bucket (1) outer wall, be fixed with air-blower (19) on supporting seat (3), link to each other through the pipeline between air-blower (19) and air inlet (17), the electrical property links to each other between air-blower (19) and control cabinet (13).

6. A concrete metering apparatus as claimed in claim 5, wherein: the air inlet (17) is an annular wave air outlet groove, the number of the air inlets (17) is not less than 3, and the air inlets (17) are uniformly distributed on the outer wall of the scale bucket (1).

7. A concrete metering apparatus according to claim 6, wherein; the balance scale is characterized in that a pressure equalizing chamber (20) is arranged in the wall of the scale bucket (1), the cross section of the pressure equalizing chamber (20) is w-shaped, and the air inlet (17) and the air blowing groove (18) are respectively connected with two ends of the pressure equalizing chamber (20).

8. A concrete metering apparatus as claimed in claim 1, wherein: be equipped with control cabinet (13) on supporting seat (3), scale bucket (1) outer wall is equipped with position receiver (21), be equipped with position transmitter (22) on knife rest (8), position transmitter (22), position receiver (21), pressure sensor (4), motor (12) and air-blower (19) all with control cabinet (13) between electric connection.