Concrete surplus slurry recycling system and control method thereof

Abstract

The application discloses a concrete residual slurry recycling system and a control method thereof, which comprises a residual slurry collecting mechanism, a residual slurry homogenizing mechanism, a residual slurry storage and conveying mechanism and an electric control operation unit, wherein the residual slurry collecting mechanism, the residual slurry homogenizing mechanism and the residual slurry storage and conveying mechanism are sequentially connected; the residual slurry collecting mechanism is used for collecting concrete residual slurry and adding a retarder into the collected concrete residual slurry; the residual slurry homogenizing mechanism is used for homogenizing treatment of the concrete residual slurry; and the residual slurry storage and conveying mechanism is used for storing the concrete residual slurry. The vertical installation mode is adopted, the concrete residual slurry at the bottom of a secondary barrel can be completely extracted, the problem that the residual slurry at the bottom cannot be extracted by a vertical slurry pump in a primary barrel is solved, the utilization rate of the concrete residual slurry is improved, the residual slurry in a conveying pipeline can be back-flushed into the secondary barrel, the problem of pipeline blockage caused by long-term use is avoided, and the long-term stable operation of the residual slurry recycling system is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of residual slurry recycling, and particularly relates to a concrete residual slurry recycling system and a control method thereof. BACKGROUND

[0002] Residual slurry is a suspension liquid that is separated from the inner wall of a pipe pile after concrete is centrifugally formed in the production process of the pipe pile, and the main components of the residual slurry are cement, finely ground sand, water, sand powder and water reducing agent, etc. Currently, how to reuse the residual slurry to solve the problem of environmental pollution caused by the discharge of the residual slurry has become a common problem in the pipe pile production industry.

[0003] In the prior art, the process of the residual slurry recycling system is as follows: after the pipe pile is centrifuged, the residual slurry is poured into a residual slurry barrel by a crane grabbing the pipe pile; after a certain amount of residual slurry is collected in the residual slurry barrel, a retarder is manually added; the residual slurry is pumped to a homogenizing barrel through a pipeline by a vertical slurry pump; the residual slurry is homogenized by adding water in the homogenizing barrel; after the residual slurry is homogenized to a certain concentration, the homogenized residual slurry is pumped to a material collecting barrel for temporary storage by a slurry pump through a pipeline; and when the residual slurry is needed at a mixing station, the residual slurry is pumped to a metering hopper above the mixing station by a slurry pump through a pipeline, and the residual slurry is added to the mixing station in a metered amount from the metering hopper.

[0004] The residual slurry recycling system described above has the following disadvantages in use:

[0005] 1. The existing residual slurry recycling system adopts a vertical slurry pump in a main barrel to pump the residual slurry, but the residual slurry at the bottom of the main barrel cannot be completely pumped, and the utilization rate of the residual slurry is low;

[0006] 2. The residual slurry conveying pipeline is long, and residual slurry is easily left in the pipeline, which cannot be effectively treated, and over time, the residual slurry conveying pipeline is blocked, affecting the recycling and reuse of the residual slurry;

[0007] 3. The residual slurry that just enters the residual slurry barrel has a high concentration and a high content of cement and sand, and is easily deposited and accumulated at the bottom of the residual slurry barrel, causing the slurry pump to be blocked;

[0008] 4. The homogenizing barrel controls the volume of residual slurry pumped each time by a float switch device, and the residual slurry is diluted by manually adding water, but this method has the problem of uneven density of the residual slurry each time, which easily causes large changes in the state of the concrete, the water consumption is difficult to control, the operator of the mixer has difficulty in operation, and the quality of the pipe pile fluctuates greatly;

[0009] 5. The amount of retarder added manually is difficult to control, and there is no standard for measurement, and the amount of retarder is often determined according to experience, which often causes unstable quality of the pipe pile, increases production cost, and affects market sales;

[0010] In order to solve the above problems, we propose a concrete residual slurry recycling system and a control method thereof. SUMMARY

[0011] The present application aims to provide a concrete surplus slurry recycling system and a control method thereof to solve the problems presented in the background.

[0012] To achieve the above object, the present application provides the following technical solution: a concrete surplus slurry recycling system, comprising a surplus slurry collecting mechanism, a surplus slurry homogenizing mechanism, a surplus slurry storage and conveying mechanism, and an electric control operation unit, wherein the surplus slurry collecting mechanism, the surplus slurry homogenizing mechanism, and the surplus slurry storage and conveying mechanism are connected in sequence, and the surplus slurry collecting mechanism, the surplus slurry homogenizing mechanism, and the surplus slurry storage and conveying mechanism are connected with the electric control operation unit.

[0013] The surplus slurry collecting mechanism is used to collect concrete surplus slurry, add a retarder into the collected concrete surplus slurry, and convey the concrete surplus slurry with the added retarder to the surplus slurry homogenizing mechanism.

[0014] The surplus slurry homogenizing mechanism is used to homogenize the concrete surplus slurry with the added retarder and convey the homogenized concrete surplus slurry to the surplus slurry storage and conveying mechanism.

[0015] The surplus slurry storage and conveying mechanism is used to store the homogenized concrete surplus slurry and convey the stored concrete surplus slurry to a mixing station.

[0016] The electric control operation unit is used to set and control the operation parameters of the surplus slurry collecting mechanism, the surplus slurry homogenizing mechanism, and the surplus slurry storage and conveying mechanism, and complete the recycling operation of the concrete surplus slurry.

[0017] Preferably, the surplus slurry collecting mechanism comprises a collecting main barrel and a collecting auxiliary barrel, and the bottom of the collecting main barrel is provided with a first main-auxiliary barrel connecting butterfly valve connected with the collecting auxiliary barrel through a first connecting hose.

[0018] The collecting main barrel is provided with a collecting main barrel stirrer for stirring the concrete surplus slurry, and is provided with a collecting main barrel laser sensor for detecting the liquid level of the collecting main barrel, and the collecting auxiliary barrel is provided with a collecting auxiliary barrel laser sensor for detecting the liquid level of the collecting auxiliary barrel.

[0019] The collecting auxiliary barrel is provided with a collecting auxiliary barrel slurry pump connected with the surplus slurry homogenizing mechanism through a first conveying pipeline, and the first conveying pipeline is connected with a first circulating pipeline connected with the collecting main barrel, and is provided with a homogenizing conveying valve and a first backwashing valve, and the first circulating pipeline is provided with a first circulating valve.

[0020] The bottom of the collection main barrel is provided with a collection main barrel blowdown butterfly valve, and the lower part of the collection auxiliary barrel is provided with a collection auxiliary barrel blowdown butterfly valve.

[0021] Preferably, the collection main barrel is installed on the collection main barrel support, and the height of the collection main barrel is higher than the height of the collection auxiliary barrel.

[0022] The collection main barrel support is provided with a first winch support, and the first winch support is provided with a first winch for lifting or lowering the collection auxiliary barrel slurry pump.

[0023] Preferably, the collection main barrel is connected with a retarder adding box through a retarder conveying pipe, the retarder adding box is added with a retarder, and the retarder conveying pipe is provided with a retarder pump.

[0024] Preferably, the residual slurry homogenizing mechanism comprises a homogenizing main barrel and a homogenizing auxiliary barrel, the bottom of the homogenizing main barrel is provided with a second main- auxiliary barrel connecting butterfly valve, and the second main- auxiliary barrel connecting butterfly valve is connected with the homogenizing auxiliary barrel through a second connecting hose.

[0025] The homogenizing main barrel is provided with a homogenizing main barrel stirrer for stirring concrete residual slurry, the homogenizing main barrel is provided with a homogenizing main barrel laser sensor for detecting the liquid level of the homogenizing main barrel, and the homogenizing auxiliary barrel is provided with a homogenizing auxiliary barrel laser sensor for detecting the liquid level of the homogenizing auxiliary barrel.

[0026] The homogenizing main barrel is installed on the homogenizing main barrel support, and a weighing sensor is arranged at the connection between the homogenizing main barrel and the homogenizing main barrel support.

[0027] The homogenizing auxiliary barrel is provided with a homogenizing auxiliary barrel slurry pump, the homogenizing auxiliary barrel slurry pump is connected with the residual slurry storage conveying mechanism through a second conveying pipeline, a second circulating pipeline connected with the homogenizing main barrel is connected to the second conveying pipeline, a storage conveying valve and a second backwashing valve are arranged on the second conveying pipeline, and a second circulating valve is arranged on the second circulating pipeline.

[0028] The bottom of the homogenizing main barrel is provided with a homogenizing main barrel blowdown butterfly valve, and the lower part of the homogenizing auxiliary barrel is provided with a homogenizing auxiliary barrel blowdown butterfly valve.

[0029] Preferably, the homogenizing main barrel support is provided with a second winch support, and the second winch support is provided with a second winch for lifting or lowering the homogenizing auxiliary barrel slurry pump.

[0030] Preferably, the residual slurry storage conveying mechanism comprises a storage main barrel, a storage auxiliary barrel and a conveying metering hopper, and each of the storage auxiliary barrel and the conveying metering hopper is provided with at least one group.

[0031] The bottom of the storage main barrel is provided with a third main and auxiliary barrel connecting butterfly valve, which is connected with the storage auxiliary barrel through a third connecting hose;

[0032] The storage main barrel is provided with a storage main barrel stirrer for stirring the concrete residual slurry, a storage main barrel laser sensor for detecting the liquid level of the storage main barrel, and a storage auxiliary barrel laser sensor for detecting the liquid level of the storage auxiliary barrel;

[0033] The storage auxiliary barrel is provided with a storage auxiliary barrel slurry pump, which is connected with the conveying metering hopper through a third conveying pipeline, the conveying metering hopper is connected with the stirring equipment of the mixing station, the third conveying pipeline is connected with the third circulating pipeline connected with the storage main barrel, the third conveying pipeline is provided with a metering hopper valve, and the third circulating pipeline is provided with a third circulating valve;

[0034] The bottom of the storage main barrel is provided with a storage main barrel blowdown butterfly valve, and the lower part of the storage auxiliary barrel is provided with a storage auxiliary barrel blowdown butterfly valve.

[0035] Preferably, the storage main barrel is installed on the storage main barrel support, and the height of the storage main barrel is higher than the height of the storage auxiliary barrel;

[0036] The side of the storage main barrel support facing the storage auxiliary barrel is provided with a third winch support, and the third winch support is provided with a third winch for lifting or lowering the storage auxiliary barrel slurry pump.

[0037] Preferably, the electric control operation unit comprises a control cabinet, a PLC and an operation touch screen;

[0038] The control cabinet, the PLC and the operation touch screen are connected in sequence;

[0039] The first main and auxiliary barrel connecting butterfly valve, the collection main barrel stirrer, the collection auxiliary barrel slurry pump, the homogenizing conveying valve, the first backwashing valve, the first circulating valve, the collection main barrel blowdown butterfly valve, the collection auxiliary barrel blowdown butterfly valve, the first winch, the retarder pump, the second main and auxiliary barrel connecting butterfly valve, the homogenizing main barrel stirrer, the homogenizing auxiliary barrel slurry pump, the storage conveying valve, the second backwashing valve, the second circulating valve, the homogenizing main barrel blowdown butterfly valve, the homogenizing auxiliary barrel blowdown butterfly valve, the second winch, the third main and auxiliary barrel connecting butterfly valve, the storage main barrel stirrer, the storage auxiliary barrel slurry pump, the metering hopper valve, the third circulating valve, the storage main barrel blowdown butterfly valve, the storage auxiliary barrel blowdown butterfly valve and the third winch are all connected with the control cabinet;

[0040] The collection main barrel laser sensor, the collection auxiliary barrel laser sensor, the homogenization main barrel laser sensor, the homogenization auxiliary barrel laser sensor, the weighing sensor, the storage main barrel laser sensor and the storage auxiliary barrel laser sensor are connected with the PLC.

[0041] A control method of a concrete surplus slurry recycling system, comprising the following steps:

[0042] A: The concrete surplus slurry enters the collection main barrel through the surplus slurry input pipe, the collection main barrel laser sensor detects the liquid level in the collection main barrel in real time, the liquid level of the collection main barrel is set with upper limit, middle limit and lower limit through the operation touch screen, then the collection main barrel agitator is started, the collection main barrel agitator stirs the concrete surplus slurry in the collection main barrel, then the retarder pump starts to run to transport the retarder in the retarder adding box to the collection main barrel, the running time of the retarder pump is set through the operation touch screen, the retarder pump needs to be started to add retarder when the liquid level of the collection main barrel rises, the retarder pump does not need to be started when the liquid level of the collection main barrel falls, when the liquid level of the collection main barrel reaches the middle limit, the first main auxiliary barrel connecting butterfly valve is opened at this time, the first main auxiliary barrel connecting butterfly valve transports the concrete surplus slurry in the collection main barrel to the collection auxiliary barrel through the first connecting hose;

[0043] B: At this time, the collection auxiliary barrel laser sensor starts to detect the liquid level in the collection auxiliary barrel in real time, the liquid level of the collection auxiliary barrel is set with upper limit and lower limit through the operation touch screen, when the liquid level in the collection auxiliary barrel reaches the upper limit, the first main auxiliary barrel connecting butterfly valve is closed, at this time, the collection auxiliary barrel slurry pump starts to transport the concrete surplus slurry to the homogenization main barrel through the first conveying pipeline, the homogenization conveying valve is opened, when the liquid level of the concrete surplus slurry in the collection auxiliary barrel is lower than the upper limit set value 40CM, the first main auxiliary barrel connecting butterfly valve is opened again to start to transport the concrete surplus slurry to the collection auxiliary barrel, the first main auxiliary barrel connecting butterfly valve is closed when the liquid level of the collection auxiliary barrel reaches the upper limit, and the process is repeated in turn, the weighing sensor detects the weight of the concrete surplus slurry in the homogenization main barrel in real time, until the homogenization surplus slurry weight of the homogenization main barrel reaches 80% of the set value, the first main auxiliary barrel connecting butterfly valve is closed, after the liquid level of the collection auxiliary barrel reaches the lower limit, the collection auxiliary barrel slurry pump stops after a delay of 5 seconds, completing the transportation of the concrete surplus slurry from the collection auxiliary barrel to the homogenization main barrel once.

[0044] C: open the first backwash valve, backwash, backwash time through the operation of the touch screen set, waiting for the remaining slurry and backwash water in the pipeline backflow to the collection of the vice bucket, 30 seconds later, the homogenization delivery valve is closed, the first circulation valve is opened, the collection of the vice bucket slurry pump is started, and the backwash water and the remaining slurry are delivered to the collection of the main bucket through the first circulation pipeline. The collection of the vice bucket judges the liquid level to reach the lower limit through the collection of the vice bucket laser sensor, delays for 5 seconds to stop the collection of the vice bucket slurry pump, and then closes the first circulation valve, waits for the next cycle, and the first winch is used when the collection of the vice bucket slurry pump needs to be lifted. The first winch is used when the collection of the vice bucket slurry pump needs to be lifted. The rising and falling of the first winch are controlled through the operation of the touch screen, and the upper limit and the lower limit of the first winch are set to facilitate the maintenance of the collection of the vice bucket;

[0045] D: At this time, the weighing sensor detects the weight of the concrete remaining slurry in the homogenization main bucket in real time. The homogenization main bucket has a single feeding of X tons, and the value of X is set through the operation of the touch screen. The homogenization main bucket starts the homogenization main bucket mixer when receiving the concrete remaining slurry. After the homogenization main bucket feeding reaches the set weight value, the homogenization main bucket mixer stops stirring for 30 seconds to wait for the concrete remaining slurry liquid level to be stable. The homogenization main bucket laser sensor detects the liquid level height in the homogenization main bucket, starts the first calculation of the water quantity required for homogenization, sets the homogenization density of the concrete remaining slurry through the operation of the touch screen, and the calculation formula is: M2=(p2V2-M1) / (1-p2), wherein p2: target density, V2: current volume, M1: weight before water injection, M2: water weight required, water M=V. Then the water inlet pipeline is opened to start adding water to the homogenization main bucket. If the required water quantity is less than or equal to 10 kg, direct homogenization is completed. The first water quantity is 80% of the water quantity required for this homogenization. The first homogenization water starts the homogenization main bucket mixer at the same time. After the first homogenization water is completed, stop stirring for 30 seconds to wait for the concrete remaining slurry liquid level to be stable. Start the second homogenization measurement and calculation. The formula is used again to calculate the second homogenization water quantity required. This time, the water quantity is 100% of the calculated water quantity. Then start adding water to the homogenization main bucket through the water inlet pipeline, and at the same time, start the homogenization main bucket mixer. The second homogenization is directly completed;

[0046] E: Then open the second main and auxiliary bucket connection butterfly valve, the second main and auxiliary bucket connection butterfly valve starts to transport the concrete surplus slurry to the homogenization auxiliary bucket through the second connecting hose, the liquid level in the homogenization auxiliary bucket is detected by the homogenization auxiliary bucket laser sensor, the liquid level in the homogenization auxiliary bucket is set by operating the touch screen to set the upper limit and the lower limit, when the liquid level in the homogenization auxiliary bucket reaches the upper limit, the second main and auxiliary bucket connection butterfly valve is closed, the homogenization auxiliary bucket slurry pump is started, at this time the liquid level of the storage main bucket allows the slurry to enter, the liquid level of the storage main bucket is set by operating the touch screen, the liquid level of the storage main bucket is set to the total amount of homogenization at one time, if the condition is not met, the homogenization bucket continues to stir and waits for the storage bucket to allow the slurry to enter, the storage conveying valve is opened, the homogenization auxiliary bucket slurry pump transports the concrete surplus slurry to the storage main bucket through the second conveying pipeline, when the liquid level of the concrete surplus slurry in the homogenization auxiliary bucket is lower than the upper limit set value 40CM, the second main and auxiliary bucket connection butterfly valve is opened again to transport the concrete surplus slurry to the homogenization auxiliary bucket, the second main and auxiliary bucket connection butterfly valve is closed when the upper limit is reached, and the cycle is repeated in turn until the weight of the concrete surplus slurry in the homogenization main bucket is less than 1 kg and the liquid level in the homogenization auxiliary bucket reaches the lower limit, the second main and auxiliary bucket connection butterfly valve is closed, and the homogenization auxiliary bucket slurry pump is stopped after 5 seconds of delay;

[0047] F: Then open the second backwash valve, backwash, wait for the concrete surplus slurry and backwash water in the second conveying pipeline to flow back to the homogenization auxiliary bucket, wait for 30 seconds, close the storage conveying valve, open the second circulating valve, start the homogenization auxiliary bucket slurry pump to transport the backwash water and concrete surplus slurry to the homogenization main bucket, the homogenization auxiliary bucket detects the liquid level to reach the lower limit by the homogenization auxiliary bucket laser sensor, delays for 5 seconds to stop the homogenization auxiliary bucket slurry pump, closes the second circulating valve, waits for the next cycle, and records the number, date, time, homogenization weight, and homogenization density after homogenization is completed for historical data analysis, the second winch is used when the homogenization auxiliary bucket slurry pump needs to be lifted, the second winch is controlled by operating the touch screen to rise and fall, and the upper limit and the lower limit of the second winch are set to facilitate maintenance of the homogenization auxiliary bucket;

[0048] G: The storage main barrel detects the concrete surplus slurry liquid level in the storage main barrel in real time through the storage main barrel laser sensor, sets the upper limit and the lower limit of the liquid level in the storage main barrel through the operation touch screen, and when the concrete surplus slurry liquid level in the storage main barrel exceeds the lower limit, the storage main barrel mixer continuously runs; when the mixing station needs concrete surplus slurry, the third main-vice barrel connecting butterfly valve is opened, the storage vice barrel detects the liquid level in the storage vice barrel in real time through the storage vice barrel laser sensor, and the liquid level of the storage vice barrel is set to a high liquid level, a middle liquid level and a low liquid level through the operation touch screen; when the liquid level in the storage vice barrel reaches the high liquid level, the third main-vice barrel connecting butterfly valve is closed, the storage main barrel mixer starts, the metering hopper valve is opened, and the concrete surplus slurry is transported to the mixing station through the conveying metering hopper; when the liquid level in the storage vice barrel reaches the middle liquid level, the third main-vice barrel connecting butterfly valve is opened to supply concrete surplus slurry to the storage vice barrel; when the concrete surplus slurry in the storage vice barrel is not used for more than 3 minutes, the storage vice barrel slurry pump starts, the third circulating valve is opened, and the surplus slurry liquid level in the storage vice barrel reaches the lower limit and stops after 5 seconds of delay; and the concrete surplus slurry transportation is completed.

[0049] Compared with the prior art, the present application has the following advantages:

[0050] 1. The collection vice barrel, the collection vice barrel slurry pump, the homogenization vice barrel, the homogenization vice barrel slurry pump, the storage vice barrel and the storage vice barrel slurry pump are vertically installed in the collection vice barrel, the homogenization vice barrel and the storage vice barrel respectively, the slurry pump is placed in the vice barrel for pumping concrete surplus slurry, the concrete surplus slurry at the bottom of the vice barrel can be completely pumped out, the problem that the main barrel vertical slurry pump cannot pump the concrete surplus slurry at the bottom of the main barrel is solved, and the utilization rate of concrete surplus slurry is improved.

[0051] 2. The collection vice barrel, the homogenization vice barrel and the storage vice barrel adopt a stage type surplus slurry input mode, the risk of surplus slurry overflow from the vice barrel due to the volume difference between the main barrel and the vice barrel is prevented, the concrete surplus slurry is circulated between the main barrel and the vice barrel, the problem of pipeline blockage caused by long-term stop of the concrete surplus slurry is avoided, the concrete surplus slurry is prevented from depositing, the concrete surplus slurry can be recycled, the utilization rate of surplus slurry is improved, the first backwashing valve and the second backwashing valve are respectively installed on the first conveying pipeline and the second conveying pipeline, after each delivery of concrete surplus slurry, backwashing operation is performed to backwash the residual concrete surplus slurry in the first conveying pipeline, the second conveying pipeline, the collection vice barrel slurry pump and the homogenization vice barrel slurry pump into the vice barrel, the residual surplus slurry in the pipeline is effectively cleaned, the problem of long-term pipeline blockage is avoided, and the long-term stable operation of the surplus slurry recycling system is ensured.

[0052] 3、The first circulating pipeline is connected between the collecting main barrel and the collecting auxiliary barrel through the collecting auxiliary barrel slurry pump and the first circulating pipeline, and the first circulating pipeline is provided with a first circulating valve, so that the concrete surplus slurry with high concentration at the bottom of the collecting main barrel can be circulated, the problem that the concrete surplus slurry entering the collecting main barrel is easy to deposit at the bottom of the collecting main barrel is solved, and the problem that the collecting main barrel is blocked due to the deposition and solidification of the concrete surplus slurry is prevented;

[0053] 4、The homogenizing main barrel laser sensor and the weighing sensor are arranged, the weight of the concrete surplus slurry is detected through the weighing sensor, the liquid level of the concrete surplus slurry is detected through the homogenizing main barrel laser sensor, the required water addition amount is calculated through a required water addition weight calculation formula, and a two-stage water addition mode is adopted, so that the accuracy and stability of the concrete surplus slurry concentration are ensured, and the product quality of the concrete surplus slurry is improved;

[0054] 5、The retarder adding box and the retarder pump are arranged, the retarder pump is added through quantitative control, the liquid level in the collecting main barrel is detected through the collecting main barrel laser sensor, the retarder is dynamically added in real time, the accuracy of the addition ratio is ensured, the surplus slurry quality problem caused by unstable retarder addition is solved, the production cost is reduced, and the market competitiveness of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 It is a whole structure schematic view of the present application;

[0056] Figure 2 It is a structure schematic view of the surplus slurry collecting mechanism of the present application;

[0057] Figure 3 It is a three-dimensional structure schematic view of the surplus slurry collecting mechanism of the present application;

[0058] Figure 4 It is a three-dimensional structure schematic view of the surplus slurry collecting mechanism of the present application;

[0059] Figure 5 It is a three-dimensional structure schematic view of the surplus slurry collecting mechanism of the present application;

[0060] Figure 6 It is a structure schematic view of the surplus slurry homogenizing mechanism of the present application;

[0061] Figure 7 It is a three-dimensional structure schematic view of the surplus slurry homogenizing mechanism of the present application;

[0062] Figure 8 It is a three-dimensional structure schematic view of the surplus slurry homogenizing mechanism of the present application;

[0063] Figure 9 It is a three-dimensional structure schematic view of the surplus slurry homogenizing mechanism of the present application;

[0064] Figure 10 Structure diagram of the residual slurry storage and conveying mechanism of the present application;

[0065] Figure 11 Structure diagram of the residual slurry storage and conveying mechanism of the present application;

[0066] Figure 12 Structure diagram of the residual slurry storage and conveying mechanism of the present application;

[0067] Figure 13 Structure diagram of the residual slurry storage and conveying mechanism of the present application;

[0068] Figure 14 Electrical principle diagram of the present application.

[0069] In the figure: 1, residual slurry collecting mechanism; 101, collecting main barrel; 102, collecting auxiliary barrel; 103, first main-auxiliary barrel connecting butterfly valve; 104, first connecting hose; 105, collecting main barrel agitator; 106, collecting main barrel laser sensor; 107, collecting auxiliary barrel laser sensor; 108, collecting auxiliary barrel slurry pump; 109, homogenizing delivery valve; 110, first circulating valve; 111, collecting main barrel blowdown butterfly valve; 112, collecting auxiliary barrel blowdown butterfly valve; 113, collecting main barrel support; 114, first winch support; 115, first winch; 116, retarder delivery pipe; 117, retarder addition tank; 118, retarder pump; 119, first backwashing valve; 2, residual slurry homogenizing mechanism; 201, homogenizing main barrel; 202, homogenizing auxiliary barrel; 203, second main-auxiliary barrel connecting butterfly valve; 204, second connecting hose; 205, homogenizing main barrel agitator; 206, homogenizing main barrel laser sensor; 207, homogenizing auxiliary barrel laser sensor; 208, homogenizing auxiliary barrel slurry pump; 209, storage delivery valve; 210, second backwashing valve; 211, second circulating valve; 212, homogenizing main barrel blowdown butterfly valve; 213, homogenizing auxiliary barrel blowdown butterfly valve; 214, homogenizing main barrel support; 215, weighing sensor; 216, second winch support; 217, second winch; 3, residual slurry storage delivery mechanism; 301, storage main barrel; 302, storage auxiliary barrel; 303, delivery measuring hopper; 304, third main-auxiliary barrel connecting butterfly valve; 305, third connecting hose; 306, storage main barrel agitator; 307, storage main barrel laser sensor; 308, storage auxiliary barrel laser sensor; 309, storage auxiliary barrel slurry pump; 310, measuring hopper valve; 311, third circulating valve; 312, storage main barrel blowdown butterfly valve; 313, storage auxiliary barrel blowdown butterfly valve; 314, storage main barrel support; 315, third winch support; 316, third winch; 4, electric control operation unit; 401, control cabinet; 402, PLC; 403, operation touch screen; 5, first delivery pipeline; 6, first circulating pipeline; 7, second delivery pipeline; 8, second circulating pipeline; 9, third delivery pipeline; 10, third circulating pipeline. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0071] Please refer to Figures 1-14The concrete residual slurry recycling system provided by the application comprises a residual slurry collecting mechanism 1, a residual slurry homogenizing mechanism 2, a residual slurry storage and conveying mechanism 3 and an electric control operation unit 4, the residual slurry collecting mechanism 1, the residual slurry homogenizing mechanism 2 and the residual slurry storage and conveying mechanism 3 are sequentially connected, and the residual slurry collecting mechanism 1, the residual slurry homogenizing mechanism 2 and the residual slurry storage and conveying mechanism 3 are connected with the electric control operation unit 4;

[0072] The residual slurry collecting mechanism 1 is used for collecting concrete residual slurry, adding a retarder into the collected concrete residual slurry, and conveying the concrete residual slurry with the retarder to the residual slurry homogenizing mechanism 2, and the residual slurry collecting mechanism 1 comprises a collecting main barrel 101 and a collecting auxiliary barrel 102, the bottom of the collecting main barrel 101 is provided with a first main-auxiliary barrel connecting butterfly valve 103, the first main-auxiliary barrel connecting butterfly valve 103 is connected with the collecting auxiliary barrel 102 through a first connecting hose 104, the collecting main barrel 101 is provided with a collecting main barrel stirrer 105 for stirring the concrete residual slurry, the collecting main barrel 101 is provided with a collecting main barrel laser sensor 106 for detecting the liquid level of the collecting main barrel 101, the collecting auxiliary barrel 102 is provided with a collecting auxiliary barrel laser sensor 107 for detecting the liquid level of the collecting auxiliary barrel 102, the collecting auxiliary barrel 102 is provided with a collecting auxiliary barrel slurry pump 108, the collecting auxiliary barrel slurry pump 108 is connected with the residual slurry homogenizing mechanism 2 through a first conveying pipeline 5, the first conveying pipeline 5 is connected with a first circulating pipeline 6 connected with the collecting main barrel 101, the first conveying pipeline 5 is provided with a homogenizing conveying valve 109 and a first backwashing valve 119, and the first circulating pipeline 6 is provided with a first circulating valve 110, the bottom of the collecting main barrel 101 is provided with a collecting main barrel blowdown butterfly valve 111, the lower part of the collecting auxiliary barrel 102 is provided with a collecting auxiliary barrel blowdown butterfly valve 112, the collecting main barrel 101 is installed on a collecting main barrel support 113, and the height of the collecting main barrel 101 is higher than that of the collecting auxiliary barrel 102, the collecting main barrel support 113 is provided with a first winch support 114, the first winch support 114 is provided with a first winch 115, the first winch 115 is used for lifting or lowering the collecting auxiliary barrel slurry pump 108, the collecting main barrel 101 is connected with a retarder adding tank 117 through a retarder conveying pipe 116, the retarder adding tank 117 is added with a retarder, and the retarder conveying pipe 116 is provided with a retarder pump 118;

[0073] In the application, the collecting auxiliary barrel slurry pump 108 and the first circulating pipeline 6 are connected between the collecting main barrel 101 and the collecting auxiliary barrel 102, and the first circulating pipeline 6 is provided with the first circulating valve 110, so that the concrete residual slurry with high concentration at the bottom of the collecting main barrel 101 can be circulated, the problem that the concrete residual slurry entering the collecting main barrel 101 for the first time has high concentration and is easy to deposit at the bottom of the collecting main barrel 101 is solved, and the collecting main barrel 101 is prevented from being blocked due to the deposition and solidification of the concrete residual slurry;

[0074] The present application is provided with a retarder adding box 117, a retarder pump 118, and the retarder pump 118 is added by quantitative control, the liquid level in the collection main barrel 101 is detected by the collection main barrel laser sensor 106, the retarder is dynamically added in real time, the accuracy of the adding ratio is ensured, the residual slurry quality problem caused by unstable retarder addition is solved, the production cost is reduced, and the market competitiveness of the product is increased;

[0075] The residual slurry homogenizing mechanism 2 is used for homogenizing the concrete residual slurry to which the retarder is added, and conveying the homogenized concrete residual slurry to the residual slurry storage conveying mechanism 3, and the residual slurry homogenizing mechanism 2 comprises a homogenizing main barrel 201 and a homogenizing auxiliary barrel 202, the bottom of the homogenizing main barrel 201 is provided with a second main-auxiliary-barrel connecting butterfly valve 203, the second main-auxiliary-barrel connecting butterfly valve 203 is connected with the homogenizing auxiliary barrel 202 through a second connecting hose 204; the homogenizing main barrel 201 is provided with a homogenizing main barrel stirrer 205 for stirring the concrete residual slurry, the homogenizing main barrel 201 is provided with a homogenizing main barrel laser sensor 206 for detecting the liquid level of the homogenizing main barrel 201, and the homogenizing auxiliary barrel 202 is provided with a homogenizing auxiliary barrel laser sensor 207 for detecting the liquid level of the homogenizing auxiliary barrel 202; the homogenizing main barrel 201 is installed on a homogenizing main barrel support 214, and a weighing sensor 215 is arranged at the connection between the homogenizing main barrel 201 and the homogenizing main barrel support 214; the homogenizing auxiliary barrel 202 is provided with a homogenizing auxiliary barrel slurry pump 208, the homogenizing auxiliary barrel slurry pump 208 is connected with the residual slurry storage conveying mechanism 3 through a second conveying pipeline 7, the second conveying pipeline 7 is connected with a second circulating pipeline 8 connected with the homogenizing main barrel 201, the second conveying pipeline 7 is provided with a storage conveying valve 209 and a second backwashing valve 210, and the second circulating pipeline 8 is provided with a second circulating valve 211; the bottom of the homogenizing main barrel 201 is provided with a homogenizing main barrel blowdown butterfly valve 212, the lower part of the homogenizing auxiliary barrel 202 is provided with a homogenizing auxiliary barrel blowdown butterfly valve 213, the homogenizing main barrel support 214 is provided with a second winch support 216, and the second winch support 216 is provided with a second winch 217, and the second winch 217 is used for lifting or lowering the homogenizing auxiliary barrel slurry pump 208;

[0076] In the present application, the homogenizing main barrel laser sensor 206 and the weighing sensor 215 are arranged, the weight of the concrete residual slurry is detected by the weighing sensor 215, the liquid level of the concrete residual slurry is detected by the homogenizing main barrel laser sensor 206, and the required water addition amount is calculated by a required water addition weight calculation formula, so that a two-stage water adding mode is adopted, the accuracy and stability of the concrete residual slurry concentration are ensured, and the product quality of the concrete residual slurry is improved;

[0077] The surplus slurry storage and conveying mechanism 3 is used for storing the homogenized concrete surplus slurry and conveying the stored concrete surplus slurry to the mixing station. The surplus slurry storage and conveying mechanism 3 comprises a storage main barrel 301, a storage auxiliary barrel 302 and a conveying metering hopper 303, and the storage auxiliary barrel 302 and the conveying metering hopper 303 each are provided with at least one group. The bottom of the storage main barrel 301 is provided with a third main- auxiliary barrel connecting butterfly valve 304, and the third main- auxiliary barrel connecting butterfly valve 304 is connected with the storage auxiliary barrel 302 through a third connecting hose 305. The storage main barrel 301 is provided with a storage main barrel mixer 306 for mixing the concrete surplus slurry. The storage main barrel 301 is provided with a storage main barrel laser sensor 307 for detecting the liquid level of the storage main barrel 301. The storage auxiliary barrel 302 is provided with a storage auxiliary barrel laser sensor 308 for detecting the liquid level of the storage auxiliary barrel 302. The storage auxiliary barrel 302 is provided with a storage auxiliary barrel slurry pump 309, and the storage auxiliary barrel slurry pump 309 is connected with the conveying metering hopper 303 through a third conveying pipeline 9. The conveying metering hopper 303 is connected with a mixing device of the mixing station. The third conveying pipeline 9 is connected with a third circulating pipeline 10 connected with the storage main barrel 301. The third conveying pipeline 9 is provided with a metering hopper valve 310, and the third circulating pipeline 10 is provided with a third circulating valve 311. The bottom of the storage main barrel 301 is provided with a storage main barrel blowdown butterfly valve 312, and the lower part of the storage auxiliary barrel 302 is provided with a storage auxiliary barrel blowdown butterfly valve 313. The storage main barrel 301 is installed on a storage main barrel support 314, and the height of the storage main barrel 301 is higher than the height of the storage auxiliary barrel 302. The side of the storage main barrel support 314 facing the storage auxiliary barrel 302 is provided with a third winch support 315, and the third winch support 315 is provided with a third winch 316. The third winch 316 is used for lifting or lowering the storage auxiliary barrel slurry pump 309.

[0078] The electric control operation unit 4 is used for setting and controlling the operation parameters of the surplus slurry collecting mechanism 1, the surplus slurry homogenizing mechanism 2 and the surplus slurry storage conveying mechanism 3, and completes the recycling operation of the concrete surplus slurry, and the electric control operation unit 4 comprises a control cabinet 401, a PLC 402 and an operation touch screen 403; the control cabinet 401, the PLC 402 and the operation touch screen 403 are sequentially connected; the first main and auxiliary barrel connecting butterfly valve 103, the collecting main barrel stirrer 105, the collecting auxiliary barrel slurry pump 108, the homogenizing conveying valve 109, the first backwashing valve 119, the first circulating valve 110, the collecting main barrel blowdown butterfly valve 111, the collecting auxiliary barrel blowdown butterfly valve 112, the first winch 115, the retarder pump 118, the second main and auxiliary barrel connecting butterfly valve 203, the homogenizing main barrel stirrer 205, the homogenizing auxiliary barrel slurry pump 208, the storage conveying valve 209, the second backwashing valve 210, the second circulating valve 211, the homogenizing main barrel blowdown butterfly valve 212, the homogenizing auxiliary barrel blowdown butterfly valve 213, the second winch 217, the third main and auxiliary barrel connecting butterfly valve 304, the storage main barrel stirrer 306, the storage auxiliary barrel slurry pump 309, the metering hopper valve 310, the third circulating valve 311, the storage main barrel blowdown butterfly valve 312, the storage auxiliary barrel blowdown butterfly valve 313 and the third winch 316 are all connected with the control cabinet 401; the collecting main barrel laser sensor 106, the collecting auxiliary barrel laser sensor 107, the homogenizing main barrel laser sensor 206, the homogenizing auxiliary barrel laser sensor 207, the weighing sensor 215, the storage main barrel laser sensor 307 and the storage auxiliary barrel laser sensor 308 are all connected with the PLC 402.

[0079] In the present application, the collecting auxiliary barrel 102, the collecting auxiliary barrel slurry pump 108, the homogenizing auxiliary barrel 202, the homogenizing auxiliary barrel slurry pump 208, the storage auxiliary barrel 302 and the storage auxiliary barrel slurry pump 309 are arranged, the collecting auxiliary barrel slurry pump 108, the homogenizing auxiliary barrel slurry pump 208 and the storage auxiliary barrel slurry pump 309 are vertically arranged in the collecting auxiliary barrel 102, the homogenizing auxiliary barrel 202 and the storage auxiliary barrel 302 respectively, the slurry pump is arranged in the auxiliary barrel for pumping the concrete surplus slurry by using the vertical installation mode, the concrete surplus slurry at the bottom of the auxiliary barrel can be completely pumped out, the problem that the slurry pump in the main barrel cannot pump the concrete surplus slurry at the bottom is solved, the utilization rate of the concrete surplus slurry is improved, and the utilization rate of the concrete surplus slurry is increased from 60% to 90%;

[0080] Six groups of surplus slurry are adopted, and the utilization rate of surplus slurry is compared between the existing surplus slurry recycling and the recycling of the present application, and Table 1 is a data comparison table of the utilization rate of surplus slurry.

[0081] Table 1

[0082]

[0083] From the above table 1, the average of the three groups of residual slurry utilization rate of the existing residual slurry recycling is 60.03%, the average of the three groups of residual slurry utilization rate of the present application is 89.96%, and the utilization rate of the concrete residual slurry is increased from 60% to 90%.

[0084] The control method of the concrete residual slurry recycling system provided by the embodiment comprises the following steps:

[0085] A: The concrete residual slurry enters the collection main barrel 101 through the residual slurry input pipe, the collection main barrel laser sensor 106 detects the liquid level in the collection main barrel 101 in real time, the liquid level of the collection main barrel 101 is set with upper limit, middle limit and lower limit through the operation of the touch screen 403, then the collection main barrel mixer 105 is started, the collection main barrel mixer 105 stirs the concrete residual slurry in the collection main barrel 101, then the retarder pump 118 starts to run to transport the retarder in the retarder adding box 117 into the collection main barrel 101, the running time of the retarder pump 118 is set through the operation of the touch screen 403, the retarder pump 118 needs to be started to add retarder when the liquid level of the collection main barrel 101 rises, the retarder pump 118 does not need to be started when the liquid level of the collection main barrel 101 falls, when the liquid level of the collection main barrel 101 reaches the middle limit, the first main-vice barrel connection butterfly valve 103 is opened at this time, the first main-vice barrel connection butterfly valve 103 transports the concrete residual slurry in the collection main barrel 101 to the collection vice barrel 102 through the first connection hose 104;

[0086] B: At this time, the collection vice barrel laser sensor 107 starts to detect the liquid level in the collection vice barrel 102 in real time, the liquid level of the collection vice barrel 102 is set with upper limit and lower limit through the operation of the touch screen 403, when the liquid level in the collection vice barrel 102 reaches the upper limit, the first main-vice barrel connection butterfly valve 103 is closed, at this time, the collection vice barrel slurry pump 108 starts to transport the concrete residual slurry to the homogenization main barrel 201 through the first conveying pipeline 5, the homogenization conveying valve 109 is opened, when the liquid level of the concrete residual slurry in the collection vice barrel 102 is lower than the upper limit set value 40CM, the first main-vice barrel connection butterfly valve 103 is opened again to start to transport the concrete residual slurry to the collection vice barrel 102, the first main-vice barrel connection butterfly valve 103 is closed when the liquid level of the collection vice barrel 102 reaches the upper limit, and the process is circulated in turn, the weighing sensor 215 detects the weight of the concrete residual slurry in the homogenization main barrel 201 in real time in this process, the first main-vice barrel connection butterfly valve 103 is closed when the homogenization residual slurry weight of the homogenization main barrel 201 reaches 80% of the set value, the collection vice barrel 102 waits for the liquid level to reach the lower limit, and the collection vice barrel 102 slurry pump stops after 5 seconds of delay, completing the transportation of the concrete residual slurry from the collection vice barrel 102 to the homogenization main barrel 201 once;

[0087] C: open the first backwash valve 119, backwash, backwash time is set by operating the touch screen 403, wait for the pipeline inside the residual slurry and backwash water backflow to the collection of auxiliary barrels 102, 30 seconds later, the homogenization delivery valve 109 is closed, the first circulation valve 110 is opened, the collection of auxiliary barrels slurry pump 108 is started, and the backwash water and residual slurry are delivered to the collection of main barrels 101 through the first circulation pipeline 6. The collection of auxiliary barrels 102 judges the liquid level to reach the lower limit through the collection of auxiliary barrels laser sensor 107, and delays for 5 seconds to stop the collection of auxiliary barrels slurry pump 108, and then closes the first circulation valve 110, waits for the next cycle, and the first winch 115 is used when the collection of auxiliary barrels slurry pump 108 needs to be lifted. The first winch 115 is controlled to rise and fall by operating the touch screen 403, and the upper limit and lower limit of the first winch 115 are set to facilitate the maintenance of the collection of auxiliary barrels 102;

[0088] D: At this time, the weighing sensor 215 detects the weight of the concrete residual slurry in the homogenization main barrel 201 in real time. The homogenization main barrel 201 receives X tons of single feeding, and the value of X is set by operating the touch screen 403. When the homogenization main barrel 201 receives the concrete residual slurry, the homogenization main barrel mixer 205 is started. After the homogenization main barrel 201 feeding reaches the set weight value, the homogenization main barrel mixer 205 stops stirring for 30 seconds to wait for the concrete residual slurry liquid level to be stable. The homogenization main barrel laser sensor 206 detects the liquid level height in the homogenization main barrel 201, and starts to calculate the water quantity required for the first time. The homogenization density of the concrete residual slurry is set by operating the touch screen 403, and the calculation formula is: M2=p2V2-M1 / 1-p2, wherein p2: target density, V2: current volume, M1: weight before water injection, M2: water weight required, water M=V. Then the water inlet pipeline is opened to start adding water to the homogenization main barrel 201. If the required water quantity is less than or equal to 10 kg, the homogenization is directly completed. The first water quantity is 80% of the water quantity required for this homogenization. The homogenization main barrel mixer 205 is started to stir at the same time of the first homogenization water addition. After the first homogenization water addition is completed, the stirring is stopped for 30 seconds to wait for the concrete residual slurry liquid level to be stable. The second homogenization measurement and calculation is started. The second homogenization water quantity required is calculated again. The water quantity is 100% of the calculated water quantity. Then the water inlet pipeline is started to add water to the homogenization main barrel 201, and the homogenization main barrel mixer 205 is started to stir at the same time. The second homogenization is directly completed;

[0089] E: Then open the second main and auxiliary tank connection butterfly valve 203, the second main and auxiliary tank connection butterfly valve 203 starts to transport the concrete surplus slurry to the homogenization auxiliary tank 202 through the second connecting hose 204, the liquid level in the homogenization auxiliary tank 202 is detected by the homogenization auxiliary tank laser sensor 207, and the liquid level in the homogenization auxiliary tank 202 is set to an upper limit and a lower limit by operating the touch screen 403. When the liquid level in the homogenization auxiliary tank 202 reaches the upper limit, the second main and auxiliary tank connection butterfly valve 203 is closed, the homogenization auxiliary tank slurry pump 208 is started, at this time the liquid level of the storage main tank 301 allows the slurry to be added, the liquid level of the storage main tank 301 is set by operating the touch screen 403, and the liquid level of the storage main tank 301 is set to the total amount of one homogenization. If the condition is not met, the homogenization tank continues to stir and waits for the storage tank to allow the slurry to be added, the storage conveying valve 209 is opened, the homogenization auxiliary tank slurry pump 208 transports the concrete surplus slurry to the storage main tank 301 through the second conveying pipeline 7, and when the liquid level of the concrete surplus slurry in the homogenization auxiliary tank 202 is lower than the upper limit set value 40CM, the second main and auxiliary tank connection butterfly valve 203 is opened again to transport the concrete surplus slurry to the homogenization auxiliary tank 202, and the second main and auxiliary tank connection butterfly valve 203 is closed when reaching the upper limit. In turn, until the weight of the concrete surplus slurry in the homogenization main tank 201 is less than 1 kg, and the liquid level in the homogenization auxiliary tank 202 reaches the lower limit, the second main and auxiliary tank connection butterfly valve 203 is closed, and the homogenization auxiliary tank slurry pump 208 is stopped after a delay of 5 seconds;

[0090] F: Then open the second backwash valve 210, perform backwashing, wait for the concrete surplus slurry and backwash water in the second conveying pipeline 7 to flow back to the homogenization auxiliary tank 202, wait for 30 seconds, close the storage conveying valve 209, open the second circulating valve 211, start the homogenization auxiliary tank slurry pump 208, and transport the backwash water and concrete surplus slurry to the homogenization main tank 201. When the liquid level in the homogenization auxiliary tank 202 reaches the lower limit detected by the homogenization auxiliary tank laser sensor 207, the homogenization auxiliary tank slurry pump 208 is stopped after a delay of 5 seconds, the second circulating valve 211 is closed, and the next cycle is waited for. The number, date, time, homogenization weight, and homogenization density after homogenization are recorded for historical data analysis. The second winch 217 is used when the homogenization auxiliary tank slurry pump 208 needs to be lifted, and the second winch 217 is controlled to rise and fall by operating the touch screen 403. The upper limit and lower limit of the second winch 217 are set to facilitate maintenance of the homogenization auxiliary tank 202;

[0091] G: The storage main barrel 301 detects the concrete surplus slurry liquid level in the storage main barrel 301 in real time through the storage main barrel laser sensor 307, and the upper limit and the lower limit of the liquid level in the storage main barrel 301 are set through the operation of the touch screen 403; when the concrete surplus slurry liquid level in the storage main barrel 301 exceeds the lower limit, the storage main barrel mixer 306 continues to run; when the concrete surplus slurry is needed at the mixing station, the third main-vice barrel connecting butterfly valve 304 is opened, the storage vice barrel 302 detects the liquid level in the storage vice barrel 302 in real time through the storage vice barrel laser sensor 308, and the liquid level of the storage vice barrel 302 is set to a high liquid level, a middle liquid level and a low liquid level through the operation of the touch screen 403; when the liquid level in the storage vice barrel 302 reaches the high liquid level, the third main-vice barrel connecting butterfly valve 304 is closed, the storage main barrel mixer 306 is started, and the metering hopper valve 310 is opened to transport the concrete surplus slurry to the mixing station through the conveying metering hopper 303; when the liquid level in the storage vice barrel 302 reaches the middle liquid level, the third main-vice barrel connecting butterfly valve 304 is opened to start supplying the concrete surplus slurry to the storage vice barrel 302; when the concrete surplus slurry in the storage vice barrel 302 is not used for more than 3 minutes, the storage vice barrel slurry pump 309 is started, the third circulating valve 311 is opened, and the surplus slurry liquid level in the storage vice barrel 302 reaches the lower limit and stops after 5 seconds of delay, and the concrete surplus slurry transportation is completed.

[0092] In the present application, the collection vice barrel 102, the homogenization vice barrel 202 and the storage vice barrel 302 adopt a stage type surplus slurry input mode to prevent the risk of surplus slurry overflowing the vice barrel due to the volume difference between the main barrel and the vice barrel, and the concrete surplus slurry is circulated and transported between the main barrel and the vice barrel in a circulating mode to avoid the problem of pipeline blockage caused by long-term stop of the concrete surplus slurry, prevent the deposition of the concrete surplus slurry, and improve the utilization rate of the surplus slurry. The concrete surplus slurry can be recycled, and first backwashing valve 119 and second backwashing valve 210 are respectively installed on first conveying pipeline 5 and second conveying pipeline 7, and after each transportation of the concrete surplus slurry, backwashing operation is performed to backwash the residual concrete surplus slurry in first conveying pipeline 5, second conveying pipeline 7, collection vice barrel slurry pump 108 and homogenization vice barrel slurry pump 208 into the vice barrel, effectively cleaning the residual surplus slurry in the pipeline, avoiding the problem of pipeline blockage caused by long-term use in the past, and ensuring the long-term stable operation of the surplus slurry recycling and reuse system.

[0093] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A concrete surplus slurry recycling system, characterized by, Including surplus slurry collection mechanism (1), surplus slurry homogenization mechanism (2), surplus slurry storage and conveying mechanism (3) and electric control operation unit (4), the surplus slurry collection mechanism (1), the surplus slurry homogenization mechanism (2) and the surplus slurry storage and conveying mechanism (3) are sequentially connected, the surplus slurry collection mechanism (1), the surplus slurry homogenization mechanism (2) and the surplus slurry storage and conveying mechanism (3) are connected with the electric control operation unit (4); The surplus slurry collection mechanism (1) is used for collecting concrete surplus slurry, adding retarder into the collected concrete surplus slurry, and conveying the concrete surplus slurry added with retarder to the surplus slurry homogenization mechanism (2); The surplus slurry homogenization mechanism (2) is used for homogenizing the concrete surplus slurry added with retarder, and conveying the homogenized concrete surplus slurry to the surplus slurry storage and conveying mechanism (3); The surplus slurry storage and conveying mechanism (3) is used for storing the homogenized concrete surplus slurry, and conveying the stored concrete surplus slurry to the mixing station; The electric control operation unit (4) is used for setting and controlling the operation parameters of the surplus slurry collection mechanism (1), the surplus slurry homogenization mechanism (2) and the surplus slurry storage and conveying mechanism (3), to complete the recycling operation of concrete surplus slurry; The surplus slurry collection mechanism (1) includes a collection main barrel (101) and a collection auxiliary barrel (102), the bottom of the collection main barrel (101) is provided with a first main-auxiliary barrel connecting butterfly valve (103), and the first main-auxiliary barrel connecting butterfly valve (103) is connected with the collection auxiliary barrel (102) through a first connecting hose (104); A collection main barrel stirrer (105) for stirring concrete surplus slurry is arranged on the collection main barrel (101), a collection main barrel laser sensor (106) for detecting the liquid level of the collection main barrel (101) is arranged on the collection main barrel (101), and a collection auxiliary barrel laser sensor (107) for detecting the liquid level of the collection auxiliary barrel (102) is arranged on the collection auxiliary barrel (102); A collection auxiliary barrel slurry pump (108) is arranged on the collection auxiliary barrel (102), the collection auxiliary barrel slurry pump (108) is connected with the surplus slurry homogenization mechanism (2) through a first conveying pipeline (5), a first circulating pipeline (6) connected with the collection main barrel (101) is connected on the first conveying pipeline (5), a homogenization conveying valve (109) and a first backwashing valve (119) are arranged on the first conveying pipeline (5), and a first circulating valve (110) is arranged on the first circulating pipeline (6); A collection main barrel blowdown butterfly valve (111) is arranged at the bottom of the collection main barrel (101), and a collection auxiliary barrel blowdown butterfly valve (112) is arranged at the lower part of the collection auxiliary barrel (102).

2. The concrete residual slurry recycling system according to claim 1, characterized in that: The collection main barrel (101) is installed on a collection main barrel support (113), and the height of the collection main barrel (101) is higher than the height of the collection auxiliary barrel (102). The collecting main bucket support (113) is provided with a first winch support (114), and the first winch support (114) is provided with a first winch (115), which is used for lifting or lowering the collecting auxiliary bucket slurry pump (108).

3. The concrete residual slurry recycling system according to claim 2, characterized in that: The collecting main bucket (101) is connected with a retarder adding box (117) through a retarder conveying pipe (116), the retarder adding box (117) is added with a retarder, and the retarder conveying pipe (116) is provided with a retarder pump (118).

4. The concrete residual slurry recycling system according to claim 3, characterized in that: The residual slurry homogenizing mechanism (2) comprises a homogenizing main bucket (201) and a homogenizing auxiliary bucket (202), the bottom of the homogenizing main bucket (201) is provided with a second main-auxiliary bucket connecting butterfly valve (203), and the second main-auxiliary bucket connecting butterfly valve (203) is connected with the homogenizing auxiliary bucket (202) through a second connecting hose (204); The homogenizing main bucket (201) is provided with a homogenizing main bucket stirrer (205) for stirring concrete residual slurry, the homogenizing main bucket (201) is provided with a homogenizing main bucket laser sensor (206) for detecting the liquid level of the homogenizing main bucket (201), and the homogenizing auxiliary bucket (202) is provided with a homogenizing auxiliary bucket laser sensor (207) for detecting the liquid level of the homogenizing auxiliary bucket (202); The homogenizing main bucket (201) is installed on a homogenizing main bucket support (214), and a weighing sensor (215) is arranged at the connection position of the homogenizing main bucket (201) and the homogenizing main bucket support (214); The homogenizing auxiliary bucket (202) is provided with a homogenizing auxiliary bucket slurry pump (208), the homogenizing auxiliary bucket slurry pump (208) is connected with the residual slurry storage conveying mechanism (3) through a second conveying pipe (7), the second conveying pipe (7) is connected with a second circulating pipe (8) connected with the homogenizing main bucket (201), the second conveying pipe (7) is provided with a storage conveying valve (209) and a second backwashing valve (210), and the second circulating pipe (8) is provided with a second circulating valve (211); The bottom of the homogenizing main bucket (201) is provided with a homogenizing main bucket blowdown butterfly valve (212), and the lower part of the homogenizing auxiliary bucket (202) is provided with a homogenizing auxiliary bucket blowdown butterfly valve (213).

5. The concrete residual slurry recycling system according to claim 4, characterized in that: The homogenizing main bucket support (214) is provided with a second winch support (216), and the second winch support (216) is provided with a second winch (217), which is used for lifting or lowering the homogenizing auxiliary bucket slurry pump (208).

6. The concrete residual slurry recycling system according to claim 5, characterized in that: The residual slurry storage conveying mechanism (3) comprises a storage main bucket (301), a storage auxiliary bucket (302) and a conveying metering hopper (303), and at least one set of the storage auxiliary bucket (302) and the conveying metering hopper (303) is arranged; The bottom of the storage main bucket (301) is provided with a third main-auxiliary bucket connecting butterfly valve (304), and the third main-auxiliary bucket connecting butterfly valve (304) is connected with the storage auxiliary bucket (302) through a third connecting hose (305). The storage main barrel (301) is provided with a storage main barrel mixer (306) for stirring the concrete surplus slurry, the storage main barrel (301) is provided with a storage main barrel laser sensor (307) for detecting the liquid level of the storage main barrel (301), and the storage auxiliary barrel (302) is provided with a storage auxiliary barrel laser sensor (308) for detecting the liquid level of the storage auxiliary barrel (302); The storage auxiliary barrel (302) is provided with a storage auxiliary barrel slurry pump (309), the storage auxiliary barrel slurry pump (309) is connected with the conveying metering hopper (303) through a third conveying pipeline (9), the conveying metering hopper (303) is connected with the mixing equipment of the mixing station, the third conveying pipeline (9) is connected with a third circulating pipeline (10) connected with the storage main barrel (301), the third conveying pipeline (9) is provided with a metering hopper valve (310), and the third circulating pipeline (10) is provided with a third circulating valve (311); The bottom of the storage main barrel (301) is provided with a storage main barrel sewage butterfly valve (312), and the lower part of the storage auxiliary barrel (302) is provided with a storage auxiliary barrel sewage butterfly valve (313).

7. The concrete residual slurry recycling system according to claim 6, characterized in that: The storage main barrel (301) is installed on a storage main barrel support (314), and the height of the storage main barrel (301) is higher than that of the storage auxiliary barrel (302); One side of the storage main barrel support (314) towards the storage auxiliary barrel (302) is provided with a third winch support (315), and the third winch support (315) is provided with a third winch (316), and the third winch (316) is used for lifting or lowering the storage auxiliary barrel slurry pump (309).

8. The concrete residual slurry recycling system according to claim 7, characterized in that: The electric control operation unit (4) comprises a control cabinet (401), a PLC (402) and an operation touch screen (403); The control cabinet (401), the PLC (402) and the operation touch screen (403) are connected in sequence. The first main and auxiliary barrel connecting butterfly valve (103), the collecting main barrel stirrer (105), the collecting auxiliary barrel slurry pump (108), the homogenizing conveying valve (109), the first backwashing valve (119), the first circulating valve (110), the collecting main barrel blowdown butterfly valve (111), the collecting auxiliary barrel blowdown butterfly valve (112), the first hoist (115), the retarder pump (118), the second main and auxiliary barrel connecting butterfly valve (203), the homogenizing main barrel stirrer (205), the homogenizing auxiliary barrel slurry pump (208), the storage conveying valve (209), the second backwashing valve (210), the second circulating valve (211), the homogenizing main barrel blowdown butterfly valve (212), the homogenizing auxiliary barrel blowdown butterfly valve (213), the second hoist (217), the third main and auxiliary barrel connecting butterfly valve (304), the storage main barrel stirrer (306), the storage auxiliary barrel slurry pump (309), the metering hopper valve (310), the third circulating valve (311), the storage main barrel blowdown butterfly valve (312), the storage auxiliary barrel blowdown butterfly valve (313) and the third hoist (316) are all connected with the control cabinet (401); The collecting main barrel laser sensor (106), the collecting auxiliary barrel laser sensor (107), the homogenizing main barrel laser sensor (206), the homogenizing auxiliary barrel laser sensor (207), the weighing sensor (215), the storage main barrel laser sensor (307) and the storage auxiliary barrel laser sensor (308) are all connected with the PLC (402).

9. The control method of a concrete residual slurry recycling system according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: A: The concrete surplus slurry enters the collecting main barrel (101) through the surplus slurry input pipe, the collecting main barrel laser sensor (106) detects the liquid level in the collecting main barrel (101) in real time, the liquid level of the collecting main barrel (101) is set with upper limit, middle limit and lower limit through the operation of the touch screen (403), then the collecting main barrel stirrer (105) is started, the collecting main barrel stirrer (105) stirs the concrete surplus slurry in the collecting main barrel (101), then the retarder pump (118) starts to run to convey the retarder in the retarder adding box (117) to the collecting main barrel (101), the running time of the retarder pump (118) is set through the operation of the touch screen (403), the retarder pump (118) needs to be started to add the retarder when the liquid level of the collecting main barrel (101) rises, the retarder pump (118) does not need to be started when the liquid level of the collecting main barrel (101) falls, when the liquid level of the collecting main barrel (101) reaches the middle limit, at this time, the homogenizing main barrel (201) is in the empty barrel state or has no other action, the first main and auxiliary barrel connecting butterfly valve (103) is opened, the first main and auxiliary barrel connecting butterfly valve (103) conveys the concrete surplus slurry in the collecting main barrel (101) to the collecting auxiliary barrel (102) through the first connecting hose (104); B: At this time, the collection sub-tank laser sensor (107) starts to detect the liquid level in the collection sub-tank (102) in real time. The liquid level of the collection sub-tank (102) is set by operating the touch screen (403) to set the upper limit and the lower limit. When the liquid level in the collection sub-tank (102) reaches the upper limit, the first main-sub-tank connection butterfly valve (103) is closed. At this time, the collection sub-tank slurry pump (108) starts to transport concrete surplus slurry to the homogenization main tank (201) through the first conveying pipeline (5). The homogenization conveying valve (109) is opened. When the liquid level of the concrete surplus slurry in the collection sub-tank (102) is lower than the upper limit set value by 40 CM, the first main-sub-tank connection butterfly valve (103) is opened again to start transporting concrete surplus slurry to the collection sub-tank (102). When the liquid level of the collection sub-tank (102) reaches the upper limit, the first main-sub-tank connection butterfly valve (103) is closed. The process is repeated in sequence. During this process, the weighing sensor (215) detects the weight of the concrete surplus slurry in the homogenization main tank (201) in real time. When the weight of the homogenization surplus slurry in the homogenization main tank (201) reaches 80% of the set value, the first main-sub-tank connection butterfly valve (103) is closed. After the liquid level of the collection sub-tank (102) reaches the lower limit, the collection sub-tank slurry pump is stopped after a delay of 5 seconds, completing the transportation of concrete surplus slurry from the collection sub-tank (102) to the homogenization main tank (201) once; C: Open the first backwash valve (119) to perform backwashing. The backwashing time is set by operating the touch screen (403). Wait for the surplus slurry and backwashing water in the pipeline to flow back to the collection sub-tank (102). After 30 seconds, the homogenization conveying valve (109) is closed, the first circulation valve (110) is opened, and the collection sub-tank slurry pump (108) is started to transport the backwashing water and surplus slurry to the collection main tank (101) through the first circulation pipeline (6). After the collection sub-tank (102) determines that the liquid level reaches the lower limit through the collection sub-tank laser sensor (107), the collection sub-tank slurry pump (108) is stopped after a delay of 5 seconds. Then, the first circulation valve (110) is closed, and the next cycle is waited for. The first winch (115) is used when the collection sub-tank slurry pump (108) needs to be lifted. The first winch (115) is controlled to rise and fall by operating the touch screen (403), and the upper limit and the lower limit of the first winch (115) are set to facilitate maintenance of the collection sub-tank (102). D: At this time, the weighing sensor (215) detects the weight of the concrete surplus slurry in the homogenizing main barrel (201) in real time. The homogenizing main barrel (201) is single-fed X tons, and the value of X is set through the operation of the touch screen (403). When the homogenizing main barrel (201) receives the concrete surplus slurry, the homogenizing main barrel mixer (205) is started. After the homogenizing main barrel (201) is fed to reach the set weight value, the homogenizing main barrel mixer (205) stops stirring for 30 seconds to wait for the concrete surplus slurry liquid level to be stable. The homogenizing main barrel laser sensor (206) detects the liquid level height in the homogenizing main barrel (201), and starts to calculate the water quantity required for the first homogenization. The homogenization density of the concrete surplus slurry is set through the operation of the touch screen (403). The calculation formula is: M2=(p2V2-M1) / (1-p2), wherein p2: target density, V2: current volume, M1: weight before water injection, M2: water quantity required, M=V of water, and then the water inlet pipeline is opened to start adding water to the homogenizing main barrel (201). If the required water quantity is less than or equal to 10 kg, direct homogenization is completed. The first water addition quantity is 80% of the water quantity required for this homogenization. The homogenizing main barrel mixer (205) is started to stir at the same time of the first homogenization water addition. After the first homogenization water addition is completed, stirring is stopped for 30 seconds to wait for the concrete surplus slurry liquid level to be stable. The second homogenization measurement and calculation is started. The second homogenization water quantity required is calculated again using the formula. The water addition quantity this time is 100% of the calculated water quantity. Then, the homogenizing main barrel (201) is started to add water through the water inlet pipeline, and the homogenizing main barrel mixer (205) is started to stir at the same time. The second homogenization is directly completed. E: Then open the second main and auxiliary bucket connection butterfly valve (203), the second main and auxiliary bucket connection butterfly valve (203) starts to transport the concrete surplus slurry to the homogenization auxiliary bucket (202) through the second connecting hose (204), the liquid level in the homogenization auxiliary bucket (202) is detected by the homogenization auxiliary bucket laser sensor (207), the liquid level in the homogenization auxiliary bucket (202) is set by the operating touch screen (403) to set the upper limit and the lower limit, when the liquid level in the homogenization auxiliary bucket (202) reaches the upper limit, the second main and auxiliary bucket connection butterfly valve (203) is closed, the homogenization auxiliary bucket slurry pump (208) is started, at this time, the liquid level of the storage main bucket (301) is allowed to enter the slurry, the liquid level of the storage main bucket (301) is set by the operating touch screen (403), the liquid level of the storage main bucket (301) is set to the total amount of homogenization once, if the condition is not met, the homogenization bucket continues to stir and waits for the storage bucket to allow the slurry to enter, the storage conveying valve (209) is opened, the homogenization auxiliary bucket slurry pump (208) transports the concrete surplus slurry to the storage main bucket (301) through the second conveying pipeline (7), when the concrete surplus slurry liquid level in the homogenization auxiliary bucket (202) is lower than the upper limit set value 40CM, the second main and auxiliary bucket connection butterfly valve (203) is opened again to transport the concrete surplus slurry to the homogenization auxiliary bucket (202), the second main and auxiliary bucket connection butterfly valve (203) is closed when reaching the upper limit, and the cycle is repeated in turn until the weight of the concrete surplus slurry in the homogenization main bucket (201) is less than 1 kg and the liquid level in the homogenization auxiliary bucket (202) reaches the lower limit, the second main and auxiliary bucket connection butterfly valve (203) is closed, and the homogenization auxiliary bucket slurry pump (208) is stopped after 5 seconds; F: Then open the second backwash valve (210), backwash, wait for the concrete surplus slurry and backwash water in the second conveying pipeline (7) to flow back to the homogenization auxiliary bucket (202), wait for 30 seconds, close the storage conveying valve (209), open the second circulating valve (211), start the homogenization auxiliary bucket slurry pump (208), and transport the backwash water and concrete surplus slurry to the homogenization main bucket (201), the homogenization auxiliary bucket (202) detects the liquid level to reach the lower limit by the homogenization auxiliary bucket laser sensor (207), delays for 5 seconds to stop the homogenization auxiliary bucket slurry pump (208), closes the second circulating valve (211), waits for the next cycle, and records the number, date, time, homogenization weight, and homogenization density after homogenization is completed for historical data analysis, the second winch (217) is used when the homogenization auxiliary bucket slurry pump (208) needs to be lifted, the second winch (217) is controlled by the operating touch screen (403) to rise and fall, and the upper limit and the lower limit of the second winch (217) are set to facilitate the maintenance of the homogenization auxiliary bucket (202); G: The storage main bucket (301) detects the concrete surplus slurry liquid level in the storage main bucket (301) in real time through the storage main bucket laser sensor (307), sets the upper limit and lower limit of the liquid level in the storage main bucket (301) through the operation of the touch screen (403), and when the concrete surplus slurry liquid level in the storage main bucket (301) exceeds the lower limit, the storage main bucket mixer (306) continues to run. When the mixing station needs concrete surplus slurry, open the third main-vice bucket connection butterfly valve (304), the storage vice bucket (302) detects the liquid level in the storage vice bucket (302) in real time through the storage vice bucket laser sensor (308), the liquid level of the storage vice bucket (302) is set to high liquid level, middle liquid level and low liquid level through the operation of the touch screen (403), when the liquid level in the storage vice bucket (302) reaches the high liquid level, close the third main-vice bucket connection butterfly valve (304), start the storage main bucket mixer (306), open the metering hopper valve (310), and transport the concrete surplus slurry to the mixing station through the conveying metering hopper (303), when the liquid level in the storage vice bucket (302) reaches the middle liquid level, open the third main-vice bucket connection butterfly valve (304) to start supplying concrete surplus slurry to the storage vice bucket (302), when the concrete surplus slurry in the storage vice bucket (302) is not used for more than 3 minutes, start the storage vice bucket slurry pump (309), open the third circulating valve (311), and when the surplus slurry liquid level in the storage vice bucket (302) reaches the lower limit, stop after 5 seconds, and the concrete surplus slurry transportation is completed.

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