Machine-made sand cleaning equipment and machine-made sand application process

Abstract

The invention discloses machine-made sand cleaning equipment which comprises a sand washing tank, a stirring structure is arranged in the sand washing tank, a sand inlet cylinder is installed at the top of the sand washing tank, the bottom of the sand washing tank is connected with a water outlet pipe through a sand outlet pipe, the water outlet pipe is provided with a water pump, one end of the water outlet pipe is connected with a water pipe, and the other end of the water outlet pipe is connected with a separator. A screening bed is installed at the lower end of the separator, the separator is installed on the upper portion of the screening bed through a support, the water return pipe is connected with the sand washing tank, and a second drainage pipe is installed on the top of the sand washing tank. The stirring structure comprises a transverse plate fixed to the top of the sand washing tank, a motor is installed on the transverse plate, a stirring rod is installed on the motor through a speed reducer, and stirring blades are installed on the stirring rod; the invention further discloses a machine-made sand application process. According to the machine-made sand cleaning device, different types of machine-made sand can be cleaned through different water flows, the cleaning efficiency is high, the cleaning quality is good, cleaning water is recycled in the cleaning process, and the machine-made sand cleaning device can be applied to cleaning work of different yields and different machine-made sand.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete production, and in particular to machine-made sand cleaning equipment and a machine-made sand application process. Background Art

[0002] Since the mining of natural river sand depends on natural riverbeds and lakes, it is easy to damage the riverbed and affect the environment. In addition, the reserves of natural sand are limited, and they are gradually decreasing with the increase in mining volume, which restricts the production of concrete. At present, the mainstream method is to use machine-made sand instead of river sand. By adjusting the production process and the source of raw materials, it has been applied. Therefore, machine-made sand will be one of the important raw materials for concrete production.

[0003] The production raw materials of artificial sand are extensive. Specifically, various waste resources can be utilized, such as tailings, construction waste, etc., which can be processed into artificial sand and gravel to realize the recycling of resources. When applied, the quality of artificial sand can be controlled by precise control of particle size and ash amount, thereby controlling the quality of concrete. Since concrete uses a large amount of sand and there are many varieties, it is particularly necessary to be able to make sand according to local conditions to meet production needs. For this reason, we have proposed an artificial sand cleaning equipment and artificial sand application process to solve the above problems. Summary of the invention

[0004] The present application provides a machine-made sand cleaning device and a machine-made sand application process, which solves the problem of cleaning machine-made sand of different types and different requirements before configuring concrete.

[0005] The present application provides a machine-made sand washing device, comprising a sand washing tank, wherein a stirring structure is arranged in the sand washing tank, a sand inlet cylinder is installed on the top of the sand washing tank, a water outlet pipe is connected to the bottom of the sand washing tank through a sand outlet pipe, a water pump is installed on the water outlet pipe, a water pipe is connected to one end of the water outlet pipe, a separator is connected to the other end of the water outlet pipe, a screening bed is installed at the lower end of the separator, the separator is installed on the upper part of the screening bed through a bracket, a water outlet of the separator is connected to a return pipe, the return pipe is connected to the sand washing tank, and a second drain pipe is installed on the top of the sand washing tank;

[0006] The screening bed comprises a support frame, a mounting frame is arranged at the upper end of the support frame, the support frame and the mounting frame are connected by spring support, a sieve plate is installed in the mounting frame, the sieve plate corresponds to the separator, and a vibration motor is installed on the mounting frame via a mounting plate.

[0007] Preferably, the stirring structure comprises a horizontal plate fixed on the top of the sand washing tank, a motor is mounted on the horizontal plate, a stirring rod is mounted on the motor via a reducer, and a stirring blade is mounted on the stirring rod.

[0008] Preferably, the separators are in multiple groups.

[0009] Preferably, each group of separators is connected to the water outlet pipe via a water outlet branch, and a plurality of connecting pipes in the same group are connected to the water return pipe via a water return branch.

[0010] Preferably, there are multiple sand washing tanks, and the multiple sand washing tanks correspond to multiple groups of separators.

[0011] Preferably, an overflow trough is further provided in the sand washing tank, and the second drain pipe is connected to the overflow trough.

[0012] Preferably, a collecting hopper is installed at the bottom of the support frame, and a first drain pipe is installed at the bottom of the collecting hopper.

[0013] Preferably, it further comprises a water spray pipe installed on the mounting frame, wherein the water spray pipe is provided with a nozzle for spraying water toward the sieve plate.

[0014] Preferably, a cover plate is provided on the top of the sand washing tank, and the sand inlet cylinder is installed on the cover plate.

[0015] The present application also includes a machine-made sand application process, comprising the following steps:

[0016] The machine-made sand after screening is sent to the machine-made sand cleaning equipment for cleaning;

[0017] Taking out a certain volume of cleaned machine-made sand and weighing the mass of the cleaned machine-made sand;

[0018] Drying the cleaned machine-made sand, and weighing the mass of the dried machine-made sand to obtain the moisture content of the cleaned machine-made sand;

[0019] According to the water content of the cleaned machine-made sand, the amount of machine-made sand required for concrete is converted into the amount of cleaned machine-made sand;

[0020] delivering the cleaned machine-made sand to the concrete station;

[0021] When water is injected into concrete mixing, the required injection volume is deducted from the water content of the machine-made sand after cleaning;

[0022] Record the raw material information, size information and water content information of the manufactured sand.

[0023] It can be seen from the above technical scheme that the present application provides a machine-made sand cleaning equipment. Before the initial start-up of the present application, the liquid level in the sand washing tank reaches the height near the second drain pipe, and the stirring structure is started for stirring at the same time. Then the screened machine-made sand is first sent to the sand washing tank through the sand inlet tube by the conveyor. The machine-made sand is stirred and cleaned in the sand washing tank, and the ash in the machine-made sand is washed away and mixed with water. Since the sand washing tank is continuously filled with water, muddy water is discharged by overflow. Due to its heavy weight, the machine-made sand sinks to the bottom of the sand washing tank, and then is carried out of the sand washing tank by the outlet pipe, and water-sand separation is achieved through a separator, wherein the machine-made sand falls onto the screen plate and moves to the outlet through the vibration of the screen plate. During the movement, the water is drained on the screen plate and then discharged. The water separated by the separator flows back to the sand washing tank through the return pipe for use as cleaning water.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Through the setting of sand washing tank and stirring structure, the machine-made sand can be quickly cleaned by cyclone to improve the cleaning efficiency. The rotation speed of water flow can be set according to different machine-made sand. Different machine-made sand can be cleaned in different ways, so that one machine can be used for multiple purposes. The cleaning quality is good, and sand and water separation can be achieved during the cleaning process.

[0026] 2. Through the setting of the outlet pipe and the separator, the machine-made sand after washing in the sand washing tank can be washed twice, and separated in the separator. The separated water is used as washing water in the sand washing tank for use as washing water. The washing water is used in multiple stages to reduce the water used for sand washing;

[0027] 3. Through the setting of the screening bed, the sand and gravel are vibrated and drained. The vibration frequency can be adjusted to be used for the drainage of different machine-made sands. The screening bed has a large-width drainage surface and high drainage efficiency. The vibration frequency can be adjusted according to different amounts of sand and gravel, and the power used can be adjusted according to demand.

[0028] In summary, the present application can use different water flows to clean different types of machine-made sand, and achieve multiple cleanings with high cleaning efficiency and high quality. The cleaning water is reused during the cleaning process, and less cleaning water is used. It can be applied to the cleaning of machine-made sand of different outputs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic diagram of the structure of a machine-made sand cleaning device proposed by the present invention;

[0031] Figure 2 A schematic diagram of the top structure of a sand washing tank of a machine-made sand washing device proposed by the present invention;

[0032] Figure 3 A schematic diagram of the internal structure of a sand washing tank of a machine-made sand washing device proposed by the present invention;

[0033] In the figure: 1 sand washing tank, 2 sand inlet tube, 3 water outlet pipe, 4 water pump, 5 water return pipe, 6 water return branch, 7 connecting pipe, 8 separator, 9 water spray pipe, 10 vibration motor, 11 mounting plate, 12 mounting frame, 13 screen plate, 14 support frame, 15 collecting bucket, 16 first drainage pipe, 17 bracket, 18 spring, 19 second drainage pipe, 20 cover plate, 21 motor, 22 horizontal plate, 23 overflow tank, 24 stirring rod, 25 stirring blade, 26 sand outlet pipe. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0035] See also Figure 1-3 , a machine-made sand cleaning equipment, the present application is used for the machine-made sand cleaning work before concrete configuration, can clean a variety of different machine-made sand and can be adjusted according to the amount, specifically, including a sand washing tank 1, the machine-made sand cleaning of the present application is mainly carried out by the sand washing tank 1, the sand washing tank 1 in the present application is 60m 3The tank body can clean 0-180 tons of sand and gravel per hour, and can achieve the demand for 800-1000 tons of concrete production per hour, meeting the production demand of the original production line with a maximum daily output of 10,000 tons of concrete. A stirring structure is provided in the sand washing tank 1. The machine-made sand is mainly cleaned in the sand washing tank 1 by a rotating flowing water flow. Before the machine-made sand enters the sand washing tank 1, the water level is injected to a specified height. It is worth noting that the sand washing tank 1 of the present application is provided with a water injection pipe to realize water injection into the sand washing tank 1, which is a conventional water adding work, so it is not reflected in the accompanying drawings. After the water injection is completed, the stirring structure is started to make the water in the sand washing tank 1 rotate to form a vortex. A sand inlet cylinder 2 is installed on the top of the sand washing tank 1. The sand inlet cylinder 2 is installed on one side of the top. The machine-made sand enters the sand washing tank 1 through the sand inlet cylinder 2. It is worth noting that the present application is a sand washing device. Therefore, the machine-made sand entering the sand washing tank 1 is screened and the particle size meets the use requirements. The specific machine-made sand is first stacked after screening. When in use, it enters the concrete production equipment through the sand washing. The bottom of the sand washing tank 1 is connected to a water outlet pipe 3 through a sand outlet pipe 26. The water outlet pipe 3 is equipped with a water pump 4. The water pump 4 The machine-made sand is separated from the mud and ash in the sand washing tank 1 after the sand washing is completed. The machine-made sand settles to the bottom of the sand washing tank 1, and then flows out through the water outlet pipe 3 following the water flow in the water outlet pipe 3, and is mixed with clean water again in the water outlet pipe 3 to complete the secondary cleaning. The other end of the water outlet pipe 3 is connected to a separator 8. After the machine-made sand flows to the separator 8, the water-sand separation is completed in the separator 8, and the sand is cleaned during the separation process. The separator 8 in this application is a Venturi Separator, the machine-made sand at the separation point flows out through the bottom of the separator 8, and the water flows out from the top, so a screening bed is installed at the lower end of the separator 8. In this application, the screening bed is mainly used to drain the machine-made sand, drain the surface moisture of the machine-made sand, and make it gather and no longer drip water, which is convenient for subsequent transportation. Since the screening bed in this application is in a vibrating form, the separator 8 is installed on the upper part of the screening bed through the bracket 17, and part of the separator 8 is installed independently. The water outlet of the separator 8 is connected with a return pipe 5, and the separated water flows into the return pipe 5. The return pipe 5 is connected to the sand washing tank 1. Since the mud content of the water is low, it can be used as secondary water for washing the sand washing tank 1. When the machine-made sand can be washed to meet the standards with only secondary water, water is not injected into the sand washing tank 1, and only secondary water is used for washing. It is worth noting that when the water pressure of the return pipe 5 is insufficient, a booster pump can be installed on the return pipe 5 to ensure normal separation and return water operation. When installing the booster pump, it needs to be linked with the water pump 4. A second drain pipe 19 is installed on the top of the sand washing tank 1. The water in the sand washing tank 1 flows out of the tank through the second drain pipe 19 on the top and is sent to the sedimentation tank for sedimentation treatment for reuse.

[0036] The screening bed includes a support frame 14. In the present application, a cement base needs to be installed at the bottom of the support frame 14 to ensure stability during screening. A mounting frame 12 is provided at the upper end of the support frame 14. The support frame 14 and the mounting frame 12 are supported and connected by a spring 18. In the present application, the spring 18 is a heavy-load spring, that is, it can support the mounting frame 12 and ensure that the mounting frame 12 can shake normally after starting. It is worth noting that the mounting frame 12 of the present application is installed at an angle. Specifically, the mounting frame 12 is inclined toward one end of the discharging. A sieve plate 13 is installed in the mounting frame 12. The sieve plate 13 corresponds to the separator 8. The machine-made sand falls to the sieve plate 13 for vibration and drainage. In the present application, the sieve plate 13 is mainly used for drainage. Therefore, the sieve plate 13 can select a stainless steel screen or a non-metallic screen with high wear resistance. A vibration motor 10 is installed on the mounting frame 12 through a mounting plate 11. Two groups of vibration motors 10 can be selected and installed at both ends of the mounting frame 12 to improve the screening efficiency.

[0037] It is worth noting that the machine-made sand of the present application is directly sent to the mixing station after cleaning. Therefore, for several types of machine-made sand used in the factory, the moisture content needs to be measured before the first use. Specifically, after the new machine-made sand is introduced, it needs to be cleaned at different water speeds in the sand washing tank 1, and then the screening bed is adjusted to separate it. First, check whether there is dripping. Specifically, you can use an experimental sieve to hold part of the machine-made sand after cleaning. No water drops will flow out within one minute, and then measure the weight. After drying, measure whether the ash content meets the standard and whether it is necessary to adjust the water flow speed of the sand washing tank 1. When the ash content meets the standard, measure the dry weight again to obtain the moisture content of the machine-made sand. In the concrete ingredients, subtract the moisture content of the machine-made sand, and record the cleaning information of this model of machine-made sand for next use, thereby stabilizing the quality of the concrete, and the sand and gravel do not need to be dried or dried, thus saving drying space and drying energy.

[0038] In the present application, the stirring structure includes a transverse plate 22 fixed on the top of the sand washing tank 1, and the transverse plate 22 is used to strengthen the installation strength of the motor 21. The motor 21 is installed on the transverse plate 22. In the present application, the motor 21 is a variable frequency motor, and the speed can be adjusted according to demand to achieve different water flow speeds in the sand washing tank 1. The motor 21 is installed with a stirring rod 24 through a reducer, and a stirring blade 25 is installed on the stirring rod 24. The stirring blade 25 of the present application uses a marine propeller blade with high wear resistance, which can be used for a long time in the sand washing process.

[0039] In the present application, in order to further improve the cleaning efficiency of machine-made sand, the separator 8 is divided into multiple groups, which can improve the cleaning and separation efficiency of machine-made sand. The screening bed can be further extended accordingly to achieve a larger amount of drainage work. In actual application, the separator 8 is divided into two groups to complete the cleaning and screening work.

[0040] In some embodiments, the machine-made sand in the same sand washing tank 1 is divided into two groups of separators 8 for separation. This embodiment is suitable for large sand washing tanks 1. Each group of separators 8 is connected to the outlet pipe 3 through an outlet branch. Similarly, multiple connecting pipes 7 of the same group are connected to the return pipe 5 through a return branch 6. The separated water returns to the sand washing tank 1 again through the return pipe 5.

[0041] In some embodiments, there are multiple sand washing tanks 1, and the multiple sand washing tanks 1 correspond to multiple groups of separators 8. Smaller sand washing tanks 1 can also be selected. Each sand washing tank 1 is separated by a group of separators 8, and the separated water returns to the sand washing tank 1.

[0042] In the present application, an overflow trough 23 is also provided in the sand washing tank 1. During the sand washing process, water overflows into the overflow trough 23. The overflow trough 23 is installed around the inner edge of the sand washing tank 1, so the overflow effect is better. It is worth noting that the return pipe 5 and the sand inlet tube 2 cannot fall onto the overflow trough 23. The second drain pipe 19 is connected to the overflow trough 23, and the overflowing water is discharged through the second drain pipe 19.

[0043] In the present application, a collecting bucket 15 is installed at the bottom of the support frame 14, and the water drained from the sieve plate 13 is collected by the collecting bucket 15. Since the turbidity of the water is similar to that of the water separated by the separator 8, a first drain pipe 16 is installed at the bottom of the collecting bucket 15. The water in the first drain pipe 16 can be sent to the sand washing tank 1 for use as secondary water.

[0044] In the present application, it also includes a water spray pipe 9 installed on the mounting frame 12. The water spray pipe 9 is provided with a nozzle for spraying water toward the screen plate 13. During the drainage stage, water can also be sprayed toward the machine-made sand through the water spray pipe 9 to achieve a third cleaning, and the gathered machine-made sand can be dispersed and spread onto the screen plate 13 to improve the cleaning quality.

[0045] In the present application, a cover plate 20 is provided on the top of the sand washing tank 1, and the sand inlet tube 2 is installed on the cover plate 20. Through the setting of the cover plate 20, the dust when the machine-made sand enters the sand washing tank 1 can be reduced, so that the dust is absorbed into the water in the sand washing tank 1.

[0046] In the present application, the discharge end of the screen plate 13 extends outward to facilitate the collection of machine-made sand after washing.

[0047] The present application also includes a machine-made sand application process, comprising the following steps:

[0048] The machine-made sand after screening is sent to the machine-made sand cleaning equipment for cleaning. It is worth noting that the machine-made sand of the present application is the machine-made sand screened according to the use requirements. For details of screening, please refer to the prior art;

[0049] Take out a certain volume of cleaned machine-made sand and weigh the mass of the cleaned machine-made sand. The cleaned machine-made sand must meet the following conditions, that is, after being taken out through the experimental sieve, no water drops will be dropped out after being left to stand for five minutes;

[0050] The machine-made sand after drying and cleaning can be quickly dried in an electric heating furnace, and the mass of the machine-made sand after drying can be weighed to obtain the moisture content of the machine-made sand after cleaning. Since the moisture content of machine-made sand of different sizes prepared from different raw materials is different, when the raw materials, the origin of the raw materials or the particle size of the machine-made sand changes, the moisture content needs to be re-measured;

[0051] According to the moisture content of the machine-made sand after cleaning, the amount of machine-made sand required for concrete is converted into the amount of machine-made sand after cleaning. When making the specific conversion, the mass of machine-made sand after cleaning required for concrete is calculated according to (mass of machine-made sand after drying / mass of machine-made sand after cleaning = mass of machine-made sand after drying required for concrete / mass of machine-made sand after cleaning required for concrete). The mass of machine-made sand after cleaning required for concrete is obtained and added;

[0052] The cleaned machine-made sand is sent to the concrete station. In this application, it can be transported by a conveyor belt. It is worth noting that since the conveyor belt is long, when it is transported in the open air, attention should be paid to the evaporation amount. Specifically, the machine-made sand of the same volume can be taken at the conveyor belt outlet for weighing, and the specific gravity can be compared with the machine-made sand during measurement to observe the water loss rate. When injecting concrete mixing water, an appropriate amount of supplementation can be made to increase the quality of concrete;

[0053] When concrete is stirred and watered, the required water injection amount is subtracted from the water content of the cleaned machine-made sand, and the cleaned machine-made sand is directly used as the concrete raw material. The concrete water content is controlled according to the present application. The present application eliminates the drying process of the machine-made sand, thereby saving more energy, and also reduces the drying time and cooling time, so that machine-made sand can be quickly provided for on-site concrete preparation;

[0054] The raw material information, size information and moisture content information of the manufactured sand are recorded. When preparing concrete next time, the raw material of the manufactured sand is the same as the acquisition site and the particle size is the same. The moisture content information can be directly retrieved for concrete preparation without measurement.

[0055] It can be seen from the above technical scheme that before the initial start-up of the present application, the liquid level in the sand washing tank 1 reaches the height near the second drain pipe 19, and the stirring structure is started for stirring at the same time, and then the screened machine-made sand is first sent to the sand washing tank 1 through the sand inlet tube 2 by the conveyor, and the machine-made sand is stirred and cleaned in the sand washing tank 1, and the ash in the machine-made sand is washed away and mixed with water. Since the sand washing tank 1 is continuously filled with water, the muddy water is discharged by overflow. The machine-made sand sinks to the bottom of the sand washing tank 1 due to its heavy weight, and then is taken out of the sand washing tank 1 by the outlet pipe 3, and water-sand separation is achieved through the separator 8, wherein the machine-made sand falls onto the sieve plate 13 and moves to the outlet through the vibration of the sieve plate 13. During the movement, the water is drained on the sieve plate 13 and then discharged. The water separated by the separator 8 flows back to the sand washing tank 1 through the return pipe 5 for use as cleaning water.

[0056] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0057] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A machine-made sand cleaning device, comprising a sand washing tank (1), characterized in that: The sand washing tank (1) is provided with a stirring structure, a sand inlet cylinder (2) is installed on the top of the sand washing tank (1), the bottom of the sand washing tank (1) is connected to a water outlet pipe (3) through a sand outlet pipe (26), the water outlet pipe (3) is installed with a water pump (4), one end of the water outlet pipe (3) is connected to a water pipe, the other end of the water outlet pipe (3) is connected to a separator (8), a screening bed is installed at the lower end of the separator (8), the separator (8) is installed on the upper part of the screening bed through a bracket (17), the water outlet of the separator (8) is connected to a return pipe (5), the return pipe (5) is connected to the sand washing tank (1), and a second drain pipe (19) is installed on the top of the sand washing tank (1); The screening bed comprises a support frame (14), a mounting frame (12) is arranged at the upper end of the support frame (14), the support frame (14) and the mounting frame (12) are supported and connected by a spring (18), a sieve plate (13) is installed in the mounting frame (12), the sieve plate (13) corresponds to the separator (8), and a vibration motor (10) is installed on the mounting frame (12) via a mounting plate (11).

2. The machine-made sand cleaning equipment according to claim 1, characterized in that: The stirring structure comprises a horizontal plate (22) fixed on the top of the sand washing tank (1), a motor (21) is mounted on the horizontal plate (22), a stirring rod (24) is mounted on the motor (21) via a reducer, and a stirring blade (25) is mounted on the stirring rod (24).

3. The machine-made sand cleaning equipment according to claim 1, characterized in that: The separators (8) are in multiple groups.

4. The machine-made sand cleaning equipment according to claim 3 is characterized in that: Each group of separators (8) is connected to the water outlet pipe (3) via a water outlet branch, and a plurality of connecting pipes (7) in the same group are connected to the water return pipe (5) via a water return branch (6).

5. The machine-made sand cleaning equipment according to claim 3, characterized in that: There are a plurality of the sand washing tanks (1), and the plurality of the sand washing tanks (1) correspond to a plurality of groups of the separators (8).

6. The machine-made sand cleaning equipment according to claim 1, characterized in that: An overflow trough (23) is also provided in the sand washing tank (1), and the second drainage pipe (19) is connected to the overflow trough (23).

7. The machine-made sand cleaning equipment according to claim 1, characterized in that: A collecting bucket (15) is installed at the bottom of the support frame (14), and a first drainage pipe (16) is installed at the bottom of the collecting bucket (15).

8. The machine-made sand cleaning equipment according to claim 1, characterized in that: It also includes a water spray pipe (9) installed on the mounting frame (12), and the water spray pipe (9) is provided with a spray head for spraying water toward the sieve plate (13).

9. The machine-made sand cleaning equipment according to claim 1, characterized in that: A cover plate (20) is provided on the top of the sand washing tank (1), and the sand inlet cylinder (2) is mounted on the cover plate (20).

10. A machine-made sand application process, characterized in that: The following steps are involved: The machine-made sand after screening is sent to the machine-made sand cleaning equipment for cleaning; Taking out a certain volume of cleaned machine-made sand and weighing the mass of the cleaned machine-made sand; Drying the cleaned machine-made sand, and weighing the mass of the dried machine-made sand to obtain the moisture content of the cleaned machine-made sand; According to the water content of the cleaned machine-made sand, the amount of machine-made sand required for concrete is converted into the amount of cleaned machine-made sand; delivering the cleaned machine-made sand to the concrete station; When water is injected into concrete mixing, the required injection volume is deducted from the water content of the machine-made sand after cleaning; Record the raw material information, size information and water content information of the manufactured sand.

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