CN110948683A

CN110948683A - Mixing plant and pulping method thereof

Info

Publication number: CN110948683A
Application number: CN201911171354.1A
Authority: CN
Inventors: 梁梦琦; 梁俊; 曾少雷
Original assignee: Maanshan Hongtai Building Material Co ltd
Current assignee: Maanshan Hongtai Building Material Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-04-03

Abstract

The invention discloses a mixing plant and a pulping method thereof, and belongs to the technical field of mixing plants. The mixing station comprises a mixing device, a powder supply system, an aggregate supply system and a water supply system; an inner lining plate is arranged on the inner wall of the stirring device, and a humidity sensor is arranged on the inner lining plate; the water supply system comprises a water supply main pipe and a plurality of water supply branch pipes, wherein the water supply main pipe is provided with a flowmeter and a valve; the powder supply system comprises a powder tank, an air conveying chute, a buffer tank and a metering bin which are sequentially communicated, and the metering bin is arranged on a feed inlet of the stirring device; be provided with butterfly valve I between measurement storehouse and the agitating unit, be provided with butterfly valve II between buffer memory jar and the measurement storehouse, be provided with butterfly valve III between air delivery chute and the buffer memory jar. The invention can utilize the powder supply system to accurately and quantitatively control the powder added in the pulping process, and determine the water supply amount according to the humidity of the concrete slurry fed back by the humidity sensor, thereby preparing the high-quality concrete slurry with accurate material proportion.

Description

Mixing plant and pulping method thereof

Technical Field

The invention relates to the technical field of mixing stations, in particular to a mixing station and a pulping method thereof.

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 method for preparing the slurry of concrete and the like generally comprises the steps of mixing aggregate and powder, adding water and stirring, wherein the used aggregate such as stones is large in amount and difficult to store, is generally placed in the open air, is influenced by the natural environment, has large humidity change, and is relatively wet in rainy seasons and relatively dry in dry seasons. Receive the influence of aggregate water content, it is difficult to accurate control to add the water yield when thick liquids such as preparation concrete, and in traditional mixing plant, the water yield adds and needs rely on staff's experience to confirm, and this kind of mode leads to the water yield to add to be accurate inadequately easily, if the water yield adds excessively, can lead to thick liquids to be rare partially, solidifies slowly, influences the construction production, and it is too little to add the water yield, then can lead to thick liquids too thick, and the intensity is not enough after solidifying.

Through retrieval, chinese patent, application publication No.: CN 105415501 a, 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. When the mortar mixing station provided by the invention is used for producing slurry, the quality of the slurry is easily influenced by the humidity of the aggregate.

Disclosure of Invention

Technical problem to be solved by the invention

Aiming at the problem that the quality of slurry products is easily influenced by the humidity of aggregate when slurry is produced in a mixing plant in the prior art, the invention provides the mixing plant and the slurry making method thereof.

Technical scheme

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

a mixing plant comprises a mixing device, a mixing device and a mixing device, wherein the mixing device is used for mixing and preparing concrete slurry; and a water supply system for supplying water into the stirring device in a fixed amount; and a humidity sensor for detecting the humidity of the concrete slurry is arranged in the stirring device, so that the quantitative water supply of the water supply system is controlled according to the humidity of the concrete slurry fed back by the humidity sensor.

Further, an inner lining plate is arranged on the inner wall of the stirring device, and the humidity sensor is embedded in the inner lining plate; the humidity sensors are provided with a plurality of humidity sensors and distributed along the extending direction of the stirring shaft in the stirring device. In the water adding and stirring process, the concrete slurry is in more contact with the lining plate, the humidity sensor is embedded on the lining plate, and the humidity sensor can be ensured to be in full contact with the slurry.

Furthermore, the water supply system comprises a water supply main pipe and a plurality of water supply branch pipes communicated with the water supply main pipe, and the water supply branch pipes are respectively introduced into the stirring device; and the water supply main pipe is provided with a flowmeter and a valve.

Further, the water supply branch pipes are distributed along the extension direction of the stirring shaft in the stirring device.

The powder feeding system comprises a powder tank, an air conveying chute, a buffer tank and a metering bin which are sequentially communicated, wherein the metering bin is arranged on a feed inlet for feeding powder on the stirring device;

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 indicator, wherein the material level indicator is vertically arranged in 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 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, 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.

A pulping method of the mixing station comprises the following steps:

step one, feeding aggregate: feeding a predetermined amount of aggregate into the stirring device;

step two, powder feeding:

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

step three, water supply and stirring: and in the stirring process, determining the water supply amount according to the humidity of the concrete slurry fed back by the humidity sensor, and controlling the water supply system to supply water quantitatively to the stirring device until the preparation of the slurry is finished.

Advantageous effects

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

(1) according to the mixing station provided by the invention, the humidity sensor is arranged in the mixing device to acquire the humidity of the concrete slurry, so that the water requirement for pulping is determined, and the accurate control of the water addition amount in the pulping process is realized, so that the influence on the quality of slurry products due to different aggregate humidity is avoided, and the slurry such as high-quality concrete can be produced;

(2) according to the stirring station provided by the invention, the humidity sensor is embedded in the inner lining plate, so that the damage of slurry to the humidity sensor in the stirring process can be avoided, the sufficient humidity sensor and the slurry can be ensured, and the real humidity can be conveniently acquired; a plurality of humidity sensors are distributed along the extension direction of a stirring shaft in the stirring device, and the aggregate humidity at each position along the extension direction of the stirring shaft can be detected, so that the acquired humidity value is ensured to be closer to the actual condition;

(3) the invention provides a mixing plant, wherein a water supply system comprises a water supply main pipe and water supply branch pipes, and a flowmeter and a valve are arranged on the water supply main pipe, so that quantitative water supply can be realized; the water supply branch pipes are distributed along the extension direction of the stirring shaft in the stirring device, so that water can be uniformly injected in the direction, and the condition that the dryness and the humidity are not uniform in all positions in the stirring device is avoided;

(4) according to the mixing station provided by the invention, the buffer tank is arranged between the air conveying chute and the metering bin in the powder supply system, so that 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;

(5) according to the mixing station provided by the invention, the material level indicator 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 further the protection of a quantitative powder supply system is realized;

(6) 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; and can avoid causing the bad influence to the air delivery chute;

(7) 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;

(8) 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;

(9) 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;

(10) according to the pulping method provided by the invention, the concrete slurry can utilize the powder supply system to accurately and quantitatively control the powder added in the pulping process, and meanwhile, under the condition that the powder and the aggregate are quantitative, the water supply amount is determined according to the humidity of the concrete slurry fed back by the humidity sensor, and the water supply system is controlled to supply water quantitatively, so that high-quality concrete slurry with accurate material proportion can be prepared.

Drawings

FIG. 1 is a system schematic of a mixing station of the present invention;

FIG. 2 is a schematic structural view of a stirring device;

FIG. 3 is a schematic view showing the structure of the powder tank and the air delivery chute;

FIG. 4 is a schematic view of a powder injection state of the powder tank;

FIG. 5 is a schematic diagram of a structure of a cache tank;

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

FIG. 7 is a second schematic structural view of the floating ball level indicator;

in the drawings: 1. a powder tank; 11. a powder tank body; 111. a powder tank feeding hole; 112. a dust remover; 113. a discharge hole of the powder tank; 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; 41. a feeding port; 42. a pulp outlet; 43. an inner liner plate; 44. a humidity sensor; 5. a buffer tank; 51. a cache tank body; 52. a level indicator; 6. a butterfly valve I; 7. a butterfly valve II; 8. a butterfly valve III; 9. a water supply system; 91. a water main; 92. a water supply branch pipe; 93. a flow meter; 94. a valve; 10. an aggregate supply system.

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.

Example 1

As shown in fig. 1, a mixing plant in the present embodiment includes a mixing device 4 for mixing and preparing concrete slurry; and an aggregate supply system 10 that quantitatively supplies aggregate into the stirring device 4; and a powder supply system for quantitatively supplying the powder into the stirring device 4; and a water supply system 9 for supplying water into the stirring device 4 in a fixed amount; a humidity sensor 44 for detecting the aggregate humidity is arranged in the stirring device 4, and is used for detecting the aggregate humidity put into the stirring device 4.

As shown in fig. 2, in the present embodiment, the stirring device 4 includes a feeding port 41 and a slurry outlet 42, where a plurality of feeding ports 41 are provided for feeding aggregate and powder into the stirring device 4; the feeding port 41 for feeding the aggregates is matched with the aggregate supply system 10, and the aggregates are quantitatively fed into the stirring device 4 through the aggregate supply system 10; the feeding port 41 for feeding the powder is communicated with the powder supply system, and the powder is fed in a fixed amount through the stirring device 4 of the powder supply system. An inner lining plate 43 is arranged on the inner wall of the stirring device 4, the humidity sensor 44 is embedded in the inner lining plate 43, so that the humidity sensor 44 is prevented from being damaged by slurry in the stirring process, and meanwhile, the humidity sensor and the slurry can be ensured to be fully contacted, in the embodiment, the inner lining plate 43 is made of epoxy resin; humidity transducer 44 has a plurality ofly, and follows the extending direction of (mixing) shaft distributes in agitating unit 4 to detect along stirring shaft extending direction everywhere aggregate humidity, thereby guarantee that the humidity numerical value of gathering is closer actual conditions.

As shown in fig. 2, the water supply system 9 in this embodiment includes a water supply main 91 and a plurality of water supply branch pipes 92 connected to the water supply main 91, the water supply branch pipes 92 respectively open into the stirring device 4, and water in the water supply main 91 is injected into the stirring device 4 through the water supply branch pipes 92; the water supply main pipe 91 is provided with a flow meter 93 and a valve 94, the flow meter 93 is used for metering the water supply amount, and when the water supply amount reaches a preset amount, the valve 94 is closed to cut off the water supply, thereby realizing the quantitative water supply. The water supply branch pipes 92 are distributed along the extending direction of the stirring shaft in the stirring device 4, so that water is uniformly injected in the direction, and the condition that the water is not uniformly wetted everywhere in the stirring device 4 is avoided.

During production, after the using amount of the aggregate and the using amount of the powder are determined according to production requirements, quantitative aggregate and powder are put into the stirring device 4; in the process of adding water and stirring, the humidity sensor 44 acquires the humidity of the concrete slurry and feeds the humidity back to the stirring station control system, the control system determines the water demand according to the humidity of the concrete slurry, and then the water supply system 9 is controlled to supply water to the stirring device 4 in a fixed amount until the humidity of the concrete slurry is right.

In the mixing plant in this embodiment, the humidity sensor 44 is arranged in the mixing device 4 to obtain the humidity of the concrete slurry, so as to determine the water demand for pulping, and realize the accurate control of the water addition amount in the pulping process, thereby avoiding the influence on the quality of slurry products due to different aggregate humidity, and producing the slurry such as high-quality concrete.

Example 2

The basic structure of the mixing station in this embodiment is the same as that of embodiment 1, and the difference and improvement lies in that, as shown in fig. 1, the powder supply system includes a powder tank 1, an air delivery chute 2, a metering bin 3 and a mixing device 4 which are sequentially communicated, the metering bin 3 is disposed on a feeding port 41 of the mixing device 4 for feeding powder, and a buffer tank 5 is further disposed between the air delivery chute 2 and the metering bin 3 to store the powder which is transported by the air delivery chute 2 more, so as to prevent the air delivery chute 2 from transporting more powder to the metering bin 3, thereby realizing accurate quantitative transportation of the powder. A butterfly valve I6 is arranged between the metering bin 3 and the stirring device 4 and is used for blocking a powder passage between the metering bin 3 and the stirring device 4 in the process of metering the powder amount and preventing the powder from directly entering the stirring device 4; a butterfly valve II 7 is arranged between the buffer tank 5 and the metering bin 3 and is used for blocking a powder passage between the buffer tank 5 and the metering bin 3 when the powder amount in the metering bin 3 reaches a required amount, so that the powder is prevented from continuously entering the metering bin 3; and a butterfly valve III 8 is arranged between the air conveying chute 2 and the buffer tank 5 and used for blocking a powder passage between the air conveying chute 2 and the buffer tank 5 after quantitative feeding is finished, so that powder in the air conveying chute 2 is prevented from continuously falling into the buffer tank 5.

By utilizing the powder supply system, the precise quantitative conveying of the powder in the mixing station can be realized, so that the quality of prepared slurry such as concrete and the like is ensured; meanwhile, the influence on the pressure in the powder tank 1 can be avoided, and particularly for the powder tank 1 adopting a pressure sensor to monitor the powder allowance, the accurate monitoring of the powder in the powder tank 1 can be ensured, so that the powder tank 1 is protected, and the phenomenon of material shortage and production stop caused by insufficient allowance is avoided; and can avoid causing harmful effects to the air delivery chute.

In the method for preparing the slurry in the mixing plant in this embodiment, the amounts of the aggregate and the powder are determined according to the preparation amount of the prepared slurry, and the method comprises the following steps:

step one, feeding aggregate: feeding a predetermined amount of aggregate into the stirring device 4;

step two, powder feeding:

i, closing a butterfly valve I6, 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 the butterfly valve II 7 and simultaneously stopping the air conveying chute 2;

III, opening the butterfly valve I6 to enable the 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;

step three, water supply and stirring: in the stirring process, the water supply amount is determined according to the humidity of the concrete slurry fed back by the humidity sensor 44, and the water supply system 9 is controlled to supply water quantitatively to the stirring device 4 until the preparation of the slurry is finished.

The pulping method in the embodiment can utilize the powder supply system to accurately and quantitatively control the powder added in the pulping process, and meanwhile, under the condition that the powder and the aggregate are quantitative, the water supply quantity is determined according to the humidity of the concrete slurry fed back by the humidity sensor 44, and the water supply system 9 is controlled to supply water quantitatively, so that high-quality concrete slurry with accurate material proportion can be prepared.

Example 3

The mixing plant of the present embodiment, which is the same as embodiment 2 in basic structure, is different and improved in that, as shown in fig. 5, the buffer tank 5 includes a buffer tank body 51 and a level indicator 52, and the level indicator 52 is vertically inserted into the buffer tank body 51.

After the powder is conveyed quantitatively each time, redundant powder can enter the cache tank 5, and after long-term use, the powder amount in the cache tank 5 is accumulated more and more until the cache tank 5 is filled, so that the normal operation of the system can be influenced if workers cannot find the powder amount in time.

Therefore, in the embodiment, the level indicator 52 is arranged in the buffer tank 5 to monitor the powder amount in the buffer tank 5, before powder is quantitatively conveyed each time, a worker firstly checks the powder allowance condition of the buffer tank 5, and if the powder allowance exceeds 60% of the capacity of the level indicator 52, when powder is conveyed, after the butterfly valve I6 is closed, the butterfly valve II 7 is opened, so that the powder in the buffer tank 5 is discharged into the metering bin 3; then the butterfly valve III 8 is opened, and the air conveying chute 2 is started to convey the powder. Thereby realizing the protection of the powder quantitative supply system.

Example 4

The mixing station in this embodiment has the same basic structure as

embodiments

2 and 3, and is different and improved in that, as shown in fig. 3 and 4, the powder tank 1 includes a powder tank body 11 and a floating ball level indicator 12 disposed inside the powder tank body 11, a feed port 111 is disposed at the waist of the powder tank body 11, a discharge port 113 is disposed at the bottom of the powder tank body, a dust remover 112 is disposed at the top of the powder tank body, and the floating ball level indicator 12 floats on the surface of the powder in the powder tank body 11.

As the powder is contained in the powder tank, the powder tank needs to be sealed to prevent environmental pollution and human body injury caused by the leakage of the powder. Powder jar is bulky, need carry the powder in jar through the air pump, among the prior art, under the sealed condition of jar body, how much powder is deposited in the powder jar? How much powder is also injected? The method completely depends on the estimation of workers, so that the material level depth in the powder tank cannot be accurately positioned, and the quantity of the powder supplemented into the powder tank is difficult to determine.

If the surplus materials in the powder tank are too much, the dust remover on the top of the powder tank is blown out of the tank body, the total amount of the powder in the powder tank is lost, the total amount cannot be matched with the single-day consumption amount, and further serious production stop is caused; the leakage of the powder can cause environmental pollution and seriously affect the health of workers; in addition, the material injection speed can be influenced, a tank car needing to transport powder stays below the powder tank for a long time, the transportation and turnover of the powder are adversely affected, and the safety is poor; if the surplus material in the powder tank is less, the material can not be supplemented in time, and the material shortage and production stop can be caused. The traditional mode of confirming the excess material in the powder tank adopts manual bin checking, the bin checking mode is low in efficiency, the excess material condition cannot be fed back in time, and the safety is poor.

Therefore, in order to solve the above problem, the mixing plant in this embodiment is through set up in powder tank body 11 floater material level indicator 12 to gather in real time and feed back the material level height of powder in powder tank body 11 to can confirm the powder stock in the jar and the powder volume that needs to be mended in the sealed condition of jar body, realize the accurate control of powder volume in powder tank body 11, avoid appearing exploding the storehouse or because of the clout is not enough to lead to the short-term production.

The ratio of the self gravity of the floating ball material level device 12 to the buoyancy of air is 1: 0.7-0.9, so that the floating ball material level device can float when being impacted by injected material airflow, and the powder material is prevented from being submerged; after the material injection is finished, the gravity of the material injection tank is larger than the buoyancy, so that the material injection tank can be ensured to slowly fall to the surface of the powder, and the material level height of the powder in the powder tank body 11 is collected. In this embodiment, the ratio of the self gravity of the floating ball level indicator 12 to the buoyancy of the air is preferably 1: 0.8, and the floating and falling speeds can be kept balanced.

Specifically, as shown in fig. 6, the floating ball level indicator 12 includes a ball 121 and a sensor 122 disposed inside the ball 121, wherein the ball 121 is filled with a light gas to provide buoyancy to the ball 121, and the light gas is hydrogen or helium. In the floating ball level indicator 12 of the present embodiment, the ball 121 filled with light gas is used to bear the sensor 122, and the ball 121 can be driven to float by the injection gas flow, so as to prevent the sensor 122 from being buried by powder.

In the actual production process, the material level control method of the powder tank 1 comprises the following steps:

i, acquiring low material positions in the powder tank body 11 in real time through the floating ball material level indicator 12, and sending the low material positions to a monitoring device, such as a computer or a mobile phone, wherein a worker determines the amount of powder to be refilled according to the difference between the real-time material level height of the powder tank body 11 and the total capacity material level height of the powder tank body 11; it should be noted that the powder storage quantity in the powder tank body 11 at the low level should not be less than 20% of the full storage quantity;

II, filling powder into the powder tank body 11 according to the calculated material filling amount, wherein the floating ball material level device 12 floats above the powder under the influence of airflow in the filling process;

III, fill and annotate the completion after, floater material level indicator 12 slowly falls, treats when floater material level indicator 12 stops to continue the whereabouts, according to the high material level point of feedback under the floater material level indicator 12 quiescent condition confirms the powder material full condition in powder material tank body 11, it should be noted that when being in the high material level point the powder material stock is difficult for exceeding 85% of full stock in powder material tank body 11.

By adopting the method, the powder allowance in the powder tank 1 can be fed back in real time, so that a worker can be helped to determine when to supplement the powder and determine the amount of the supplemented powder, and the floating ball material level device 12 which can float under the push of airflow is adopted for material level acquisition and feedback, so that the powder tank is simple in structure, free of improvement on the structure of the powder tank body 11 and low in cost; compared with manual warehouse checking, the safety is high.

Example 5

The mixing station of this embodiment is substantially the same as that of embodiment 4, except and modified in that the side walls of the sphere 121 include, from inside to outside, an air barrier 1211, an anti-puncture layer 1212 and an abrasion resistant layer 1213, as shown in fig. 7. The inner air-tight layer 1211 is arranged on the innermost layer of the sphere 121 and is used for forming a seal in the sphere 121 so as to prevent light gas in the sphere 121 from leaking, and the innermost layer does not contact hard objects and is not abraded or punctured, so that the sealing performance is always good after long-term use; the anti-puncture layer 1212 is arranged outside the airtight layer 1211 and is used for increasing the strength of the ball body 121 and protecting the airtight layer 1211 so as to prevent the ball body 121 from being punctured after being impacted to a hard object; the wear-resistant layer 1213 is disposed outside the anti-puncture layer 1212 to increase the wear-resistant property of the surface of the ball body 121, so as to prevent the ball body 121 from being worn through after long-term use.

As shown in fig. 7, the sensor 122 is embedded in the anti-puncture layer 1212, so as to avoid collision and friction between the sensor 122 and the airtight layer 1211, and damage to the airtight layer 1211 and the sensor 122 itself; on the other hand, the corner of sensor 122 can be protected from contact with airtight layer 1211 by the anti-puncture property of anti-puncture layer 1212.

In this embodiment, the inner liner 1211 is a halogenated nitrile rubber layer, the anti-puncture layer 1212 is a polyurethane elastomer layer, and the wear-resistant layer 1213 is a high-molecular polyethylene layer, and has the advantages of good sealing performance, strong wear resistance, breakage resistance, and the like. It is understood that other materials of the same nature may be used for air barrier 1211, puncture resistant layer 1212, and abrasion resistant layer 1213.

Powder jar 1 in this embodiment, through right the optimization of spheroid 121 structure can prolong floater material level ware 12 life, life reaches more than a year, and the change frequency of floater material level ware 12 that has significantly reduced has improved production efficiency.

Example 6

The mixing station of this embodiment is different from and improved from

embodiments

4 and 5 in that, as shown in fig. 7, a gas injection nozzle 123 is provided on the sphere 121 for injecting light gas into the sphere 121.

After long-term use, light gas in the sphere 121 can permeate the sphere 121, so that the floating ball material level device 12 fails due to difficult floating, and therefore the floating ball material level device 12 needs to be replaced regularly, and cost waste is caused.

In this embodiment, through be provided with gas injection mouth 123 on the spheroid 121, when floater material level ware 12 floated the inefficacy, followed take out in the powder tank body 11 floater material level ware 12, then through gas injection mouth 123 to supply light gas in the spheroid 121, can make floater material level ware 12 recycles, reduces replacement cost.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A mixing station comprising

The stirring device (4) is used for stirring and preparing concrete slurry; and

a water supply system (9) for supplying water into the stirring device (4) in a fixed amount;

the method is characterized in that:

and a humidity sensor (44) for detecting the humidity of the concrete slurry is arranged in the stirring device (4), so that the quantitative water supply of the water supply system (9) is controlled according to the humidity of the concrete slurry fed back by the humidity sensor (44).

2. The mixing station of claim 1, wherein: an inner lining plate (43) is arranged on the inner wall of the stirring device (4), and the humidity sensor (44) is embedded in the inner lining plate (43); the humidity sensors (44) are arranged in a plurality and distributed along the extending direction of the stirring shaft in the stirring device (4).

3. The mixing station of claim 1, wherein: the water supply system (9) comprises a water supply main pipe (91) and a plurality of water supply branch pipes (92) communicated with the water supply main pipe (91), and the water supply branch pipes (92) are respectively introduced into the stirring device (4); and a flow meter (93) and a valve (94) are arranged on the water supply main pipe (91).

4. The mixing station of claim 3, wherein: the water supply branch pipes (92) are distributed along the extension direction of the stirring shaft in the stirring device (4).

5. The mixing station according to any of claims 1 to 4, characterized in that: the powder mixing device is characterized by further comprising a powder supply system, wherein the powder supply system comprises a powder tank (1), an air conveying chute (2), a buffer tank (5) and a metering bin (3) which are sequentially communicated, and the metering bin (3) is arranged on a feeding port (41) which is arranged on the stirring device (4) and used for feeding powder;

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).

6. The mixing station of claim 5, wherein: the buffer tank (5) comprises a buffer tank body (51) and a material level indicator (52), wherein the material level indicator (52) is vertically arranged in the buffer tank body (51).

7. The mixing station of claim 5, wherein: 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).

8. The mixing station of claim 7, wherein: 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.

9. The mixing station of claim 8, wherein: 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).

10. A method of pulping in a mixing station according to any of claims 5 to 9, characterized in that the steps comprise:

step one, feeding aggregate: feeding a predetermined amount of aggregate into the stirring device (4);

step two, powder feeding:

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 the 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 the butterfly valve II (7) and simultaneously stopping the air conveying chute (2);

III, opening the 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;

step three, water supply and stirring: in the stirring process, the water supply amount is determined according to the humidity of the concrete slurry fed back by the humidity sensor (44), and the water supply system (9) is controlled to supply water quantitatively to the stirring device (4) until the preparation of the slurry is finished.