阅读说明：本技术 一种搅拌站粉料定量供应系统及其定量供应方法 (Quantitative powder supply system of mixing station and quantitative powder supply method thereof ) 是由 梁梦琦 梁俊 曾少雷 于 2019-11-26 设计创作，主要内容包括：本发明公开了一种搅拌站粉料定量供应系统及其定量供应方法,属于搅拌站技术领域。系统包括依次设置的粉料罐、空气输送斜槽、计量仓和搅拌装置,在空气输送斜槽与计量仓之间还设置有缓存罐；计量仓与搅拌装置之间设置有蝶阀Ⅰ,缓存罐与计量仓之间设置有蝶阀Ⅱ,空气输送斜槽与缓存罐之间设置有蝶阀Ⅲ；缓存罐包括缓存罐本体和料位器,料位器竖直设置在缓存罐本体内；粉料罐包括粉料罐本体和设置于其内部的浮球料位器,浮球料位器浮动于粉料罐本体内粉料的表面。本发明通过在空气输送斜槽与计量仓之间设置缓存罐,以存储空气输送斜槽多输送的粉料,避免该部分粉料直接进入计量仓,从而实现粉料的精确定量输送,保证制备的混凝土等浆料的质量。(The invention discloses a quantitative powder supply system and a quantitative powder supply method for a mixing station, and belongs to the technical field of mixing stations. The system comprises a powder tank, an air delivery chute, a metering bin and a stirring device which are sequentially arranged, wherein a cache tank is also arranged between the air delivery chute and the metering bin; a butterfly valve I is arranged between the metering bin and the stirring device, a butterfly valve II is arranged between the buffer tank and the metering bin, and a butterfly valve III is arranged between the air conveying chute and the buffer tank; the buffer tank comprises a buffer tank body and a material level indicator, and the material level indicator is vertically arranged in the buffer tank body; the powder tank comprises a powder tank body and a floating ball material level device arranged in the powder tank body, and the floating ball material level device floats on the surface of powder in the powder tank body. According to the invention, the buffer tank is arranged between the air conveying chute and the metering bin to store the powder which is conveyed by the air conveying chute more, so that the powder is prevented from directly entering the metering bin, the accurate quantitative conveying of the powder is realized, and the quality of prepared slurry such as concrete is ensured.)

1. The utility model provides a mixing plant powder ration supply system, includes powder jar (1), air delivery chute (2), measurement storehouse (3) and agitating unit (4) that set gradually, its characterized in that: a buffer tank (5) is arranged between the air conveying chute (2) and the metering bin (3) to store the powder conveyed by the air conveying chute (2).

2. The batching system for powders for a batching plant according to claim 1, characterized in that: metering bin (3) with be provided with butterfly valve I (6) between agitating unit (4), buffer memory jar (5) with be provided with butterfly valve II (7) between metering bin (3), air delivery chute (2) with be provided with butterfly valve III (8) between buffer memory jar (5).

3. The batching system for powders for a batching plant according to claim 2, characterized in that: the buffer tank (5) comprises a buffer tank body (51) and a material level indicator (52), wherein the material level indicator (52) is vertically inserted into the buffer tank body (51).

4. The batching system of the batching plant of the mixing plant according to claim 2 or 3, characterized in that: powder tank (1) is including powder tank body (11) and set up in its inside floater material level indicator (12), floater material level indicator (12) float in the surface of powder in powder tank body (11) to gather in real time and feed back the material level height of powder in powder tank body (11).

5. The batching system for powders for a batching plant according to claim 4, characterized in that: the ratio of the self gravity of the floating ball material level device (12) to the air buoyancy is 1: 0.7-0.9.

6. The batching system for powders for a batching plant according to claim 4, characterized in that: the floating ball material level indicator (12) comprises a ball body (121) and a sensor (122), the sensor (122) is placed in the ball body (121) or embedded in the side wall of the ball body (121), and light gas is filled in the ball body (121) to provide buoyancy for the ball body.

7. The batching system for powders for a batching plant according to claim 6, characterized in that: the ball body (121) is provided with a gas injection nozzle (123).

8. The batching system for powders for a batching plant according to claim 6, characterized in that: the side wall of the sphere (121) comprises an air-tight layer (1211), an anti-puncture layer (1212) and an abrasion-resistant layer (1213) from inside to outside, and the sensor (122) is embedded in the anti-puncture layer (1212).

9. The batching system for powders for a batching plant according to claim 8, characterized in that: the airtight layer (1211) is a halogenated butadiene-acrylonitrile rubber layer; the puncture resistant layer (1212) is a polyurethane elastomer layer; the wear-resistant layer (1213) is a high-molecular polyethylene layer.

10. A method for quantitatively supplying powder in a powder quantitative supply system of a mixing station according to any one of claims 2 to 9, comprising the steps of:

i, closing a butterfly valve I (6), opening a butterfly valve II (7) and a butterfly valve III (8), then starting an air conveying chute (2), conveying powder in a powder tank (1) into a cache tank (5), and allowing the powder to enter a metering bin (3) through the cache tank (5);

II, when the powder amount in the metering bin (3) reaches a preset amount, closing a butterfly valve II (7) and simultaneously stopping the air conveying chute (2);

III, opening a butterfly valve I (6) to enable powder in the metering bin (3) to enter the stirring device (4); IV, finally closing the butterfly valve III (8) to finish the quantitative supply of the powder.

Technical Field

The invention relates to the technical field of mixing stations, in particular to a quantitative powder supply system and a quantitative powder supply method for a mixing station.

Background

The mixing station is also called concrete mixing station, and the main purpose of the mixing station is to mix and mix concrete, and the mixing station is commonly used in concrete engineering. The mixing plant has higher intelligent automation function, has the characteristics of compact structure, flexible arrangement, less investment, convenient disassembly, assembly and transportation and the like, can realize various combination modes and feeding modes according to the needs of users, can produce concrete with dry hardness, semi-dry hardness, plasticity and various proportions, realizes a stone-wrapping type mixing process, greatly improves the quality of the concrete, and is ideal equipment for medium and small building construction, highway bridge construction and commercial concrete, tubular piles and cement prefabricating plants.

The traditional mixing plant mainly comprises a powder tank, a powder conveying device, a mixing device and the like, wherein the powder in the powder tank is conveyed to the mixing device by the conveying device for use, in order to quantitatively add powder into the mixing device, a metering bin is usually arranged between the powder conveying device and the mixing device, the required adding amount of the powder is measured by the metering bin, and then the quantitative powder is conveyed into the mixing device. However, in the case of a mixing plant using an air delivery chute as the conveyor, after the air delivery chute is stopped, the residual air flow therein continues to deliver the powder into the metering bin, resulting in a large amount of powder being added; if the fan of the air conveying chute is stopped in advance, the amount of added powder is small; some manufacturers can set up the butterfly valve between air conveying chute and measurement storehouse, close this butterfly valve when stopping air conveying chute, just can prevent that the powder from continuing to get into in the measurement storehouse, but can cause powder jar internal pressure to change simultaneously, cause harmful effects to air conveying chute simultaneously.

Through retrieval, chinese patent, application publication No.: CN 105415501a, application publication date: 2016.03.23 discloses a mortar stirring station, including powder jar, aggregate storage bin and main building, be provided with stirring host computer, weighing hopper and waiting the hopper on the main building, powder in the powder jar carry extremely in the weighing hopper, aggregate in the aggregate storage bin carry extremely in waiting the hopper, the main building lower part is provided with first discharge opening and second discharge opening, the discharge gate of stirring host computer with first discharge opening is connected, the discharge gate of weighing hopper switches through first auto-change over device and is connected to the pan feeding mouth of stirring host computer or the second discharge opening, the discharge gate of waiting the hopper switches through the second auto-change over device and is connected to the pan feeding mouth of stirring host computer or the second discharge opening. According to the invention, powder in the powder tank is directly conveyed into the metering hopper through the conveying device, so that the deviation between the powder amount entering the metering hopper and the actual required amount is easily caused, and the inaccurate powder adding amount is further caused.

Disclosure of Invention

Technical problem to be solved by the invention

Aiming at the problem that the powder allowance in a powder tank of a mixing station can not be accurately controlled in the prior art, the invention provides a quantitative powder supply system and a quantitative powder supply method for the mixing station, which can realize accurate quantitative conveying of powder in the mixing station, thereby ensuring the quality of prepared slurry such as concrete and the like; meanwhile, the influence on the pressure in the powder tank can be avoided, and especially for the powder tank adopting a pressure sensor to monitor the powder allowance, the accurate monitoring of the powder in the powder tank can be ensured; and can avoid causing harmful effects to the air delivery chute.

Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows:

the utility model provides a stirring station powder ration supply system, is including the powder jar, air delivery chute, measurement storehouse and the agitating unit that set gradually the air delivery chute with still be provided with the buffer memory jar between the measurement storehouse, in order to save the powder that the air delivery chute was many carried.

Further, the metering bin with be provided with butterfly valve I between the agitating unit, the buffer memory jar with be provided with butterfly valve II between the metering bin, the air delivery chute with be provided with butterfly valve III between the buffer memory jar.

Further, the buffer tank comprises a buffer tank body and a material level device, and the material level device is vertically inserted into the buffer tank body.

Further, the powder tank includes powder tank body and sets up in its inside floater material level ware, floater material level ware float in the surface of this internal powder of powder tank to gather in real time and feed back the material level height of this internal powder of powder tank.

Furthermore, the ratio of the self gravity of the floating ball material level device to the air buoyancy is 1: 0.7-0.9.

Furthermore, the floating ball material level device comprises a ball body and a sensor, the sensor is placed in the ball body or embedded in the side wall of the ball body, and light gas is filled in the ball body to provide buoyancy for the ball body.

Further, an air injection nozzle is arranged on the ball body.

Further, the side wall of the sphere comprises an airtight layer, a puncture-resistant layer and a wear-resistant layer from inside to outside, and the sensor is embedded in the puncture-resistant layer.

Further, the airtight layer is a halogenated butadiene-acrylonitrile rubber layer; the anti-puncture layer is a polyurethane elastomer layer; the wear-resistant layer is a high molecular polyethylene layer.

A powder quantitative supply method applied to a powder quantitative supply system of a mixing station comprises the following steps:

i, closing a butterfly valve I, opening a butterfly valve II and a butterfly valve III, then starting an air conveying chute, conveying powder in a powder tank into a buffer tank, and allowing the powder to enter a metering bin through the buffer tank;

II, when the powder amount in the metering bin reaches a preset amount, closing the butterfly valve II and simultaneously stopping the air conveying chute;

III, opening a butterfly valve I to enable powder in the metering bin to enter the stirring device;

IV, finally closing the butterfly valve III to finish the quantitative supply of the powder.

Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) according to the powder quantitative supply system for the mixing station, the buffer tank is arranged between the air conveying chute and the metering bin, so that the powder which is conveyed by the air conveying chute in a large amount can be stored, the phenomenon that the air conveying chute conveys the powder to the metering bin in a large amount is avoided, the accurate quantitative conveying of the powder is realized, and the quality of prepared slurry such as concrete is ensured;

(2) according to the powder quantitative supply system of the mixing station, the material level device is arranged in the buffer tank to monitor the powder amount in the buffer tank, so that excessive powder accumulation in the buffer tank is avoided, and the powder quantitative supply system is protected;

(3) according to the powder tank provided by the invention, the material level height of the powder in the powder tank body is fed back in real time by using the floating ball material level device which is blown by the injected material airflow and can float, so that the storage amount of the powder in the tank and the amount of the powder to be supplemented can be determined under the condition that the tank body is sealed, the accurate control of the amount of the powder in the powder tank body is realized, and the phenomenon of bin explosion or the phenomenon of material shortage and production stop caused by insufficient excess material is avoided;

(4) according to the powder tank provided by the invention, the floating ball material level device adopts the ball bearing sensor filled with light gas, so that the ball can be driven to float by injecting material airflow, and the sensor is prevented from being buried by powder;

(5) according to the powder tank provided by the invention, the service life of the floating ball material level device can be prolonged by optimizing the structure of the ball body, the service life is as long as more than one year, the replacement frequency of the floating ball material level device is greatly reduced, and the production efficiency is improved;

(6) according to the powder tank provided by the invention, the airtight layer is the halogenated nitrile rubber layer, the anti-puncturing layer is the polyurethane elastomer layer, and the wear-resistant layer is the high-molecular polyethylene layer, so that the powder tank has the advantages of good sealing performance, strong wear resistance, breakage resistance and the like;

(7) according to the powder tank provided by the invention, the sensor is embedded in the anti-piercing layer, so that on one hand, the sensor and the airtight layer can be prevented from colliding and rubbing, and the airtight layer and the sensor are prevented from being damaged; on the other hand, the edges and corners of the sensor can be protected by using the anti-puncture property of the anti-puncture layer, so that the sensor is prevented from contacting the air-tight layer;

(8) according to the powder tank provided by the invention, the gas injection nozzle is arranged on the ball body, when the floating ball material level device floats and fails, the floating ball material level device is taken out from the powder tank body, and then light gas is supplemented into the ball body through the gas injection nozzle, so that the floating ball material level device can be repeatedly utilized, and the replacement cost is reduced;

(9) according to the quantitative powder supply method for the mixing station, provided by the invention, the precise quantitative conveying of the powder in the mixing station can be realized, so that the quality of prepared slurry such as concrete is ensured; meanwhile, the influence on the pressure in the powder tank can be avoided, and especially for the powder tank adopting a pressure sensor to monitor the powder allowance, the accurate monitoring of the powder in the powder tank can be ensured; and can avoid causing harmful effects to the air delivery chute.

Drawings

FIG. 1 is a schematic structural diagram of a powder quantitative supply system of a mixing station of the invention;

FIG. 2 is a schematic view showing the structure of a powder tank and an air delivery chute;

FIG. 3 is a schematic view of a powder injection state of a powder tank;

FIG. 4 is a schematic diagram of a structure of a cache tank;

FIG. 5 is a first schematic structural diagram of the floating ball level indicator;

FIG. 6 is a schematic structural diagram II of the floating ball level indicator;

in the drawings: 1. a powder tank; 11. a powder tank body; 111. a feed inlet; 112. a dust remover; 113. a discharge port; 12. a floating ball material level device; 121. a sphere; 122. a sensor; 123. a gas injection nozzle; 1211. an airtight layer; 1212. a puncture resistant layer; 1213. a wear layer; 2. an air delivery chute; 3. a metering bin; 4. a stirring device; 5. a buffer tank; 51. a cache tank body; 52. a level indicator; 6. a butterfly valve I; 7. a butterfly valve II; 8. and a butterfly valve III.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.