Concrete production plant with sewage recycling system

Abstract

This invention discloses a concrete production equipment with a wastewater reuse system for multi-stage wastewater treatment. The equipment includes a primary sedimentation tank and a control box. Through the coordination of an intelligent protection system, diversion baffles, and a flow-stabilizing grid structure, the flow rate of concrete wastewater entering the primary sedimentation tank can be precisely controlled. When the flow rate is too fast, a deceleration and flow-stabilizing function is generated, effectively adapting to the intermittent and fluctuating nature of concrete production. This avoids laminar flow turbulence and "flocculation" phenomena in the primary sedimentation tank caused by excessively fast influent. Simultaneously, the application of a pressure-sensing structure enables real-time monitoring and feedback of the flow-stabilizing effect, and intelligent dynamic control of the flow-stabilizing grid gaps. This significantly improves the adaptability to changes in influent flow rate and effectively prevents the increase in turbidity and water quality deterioration in the primary sedimentation tank area.

Description

Technical Field

[0001] This invention relates to the field of multi-stage wastewater treatment, and in particular to a concrete production equipment with a wastewater reuse system. Background Technology

[0002] Wastewater reuse systems in concrete production equipment typically employ multi-stage treatment processes to progressively remove solid particles, suspended solids, oil, and chemicals from wastewater, ultimately achieving water resource recycling. The multi-stage treatment process includes: a primary treatment stage using a combination of primary and secondary sedimentation tanks to achieve physical separation and sedimentation of the production wastewater; a secondary treatment stage using a sand and gravel separator and a sludge thickening and dewatering system for deep purification and resource recovery of the production wastewater; and a final treatment stage combining membrane separation technology and disinfection / sterilization modules to ensure the safety of the reused water.

[0003] Existing technology discloses a wastewater treatment system for a concrete mixing plant (CN118405812B). When sludge in the sedimentation tank needs to be cleaned, the piston rod of the telescopic component drives the connecting piece to move upward. The connecting piece then supports the limiting piece to move upward until the supporting piece reaches above the wastewater treatment unit. This carries the sludge out of the sedimentation tank, thus avoiding the problem of laborious cleaning due to the sludge being located at the bottom of the sedimentation tank. CN119390274B also discloses a wastewater treatment device for a concrete mixing plant. Through the setting of a wastewater fast-pass component, impurities adsorbed on the surface of the filter screen can be cleaned, preventing the gradual accumulation of a large amount of impurities on the filter screen surface. This improves the filtration effect of the filter screen on the wastewater in the sedimentation tank, which is beneficial to the normal operation of the wastewater treatment system and enhances the efficiency of the device in wastewater treatment.

[0004] Because concrete production is characterized by significant intermittency and fluctuations, especially during peak production periods when a large amount of wastewater rushes into the sedimentation tank, causing a sudden increase in the inlet flow velocity, it easily disrupts the laminar flow state within the sedimentation tank, leading to the "flocculation" phenomenon. This abnormal operating condition not only causes increased turbidity and water quality deterioration in the sedimentation tank effluent but also poses a risk of clogging to subsequent membrane separation equipment. This application proposes a concrete production equipment with a wastewater reuse system that can effectively suppress the "flocculation" phenomenon in the sedimentation tank, ensuring the treatment effect of the sedimentation tank while reducing the risk of clogging to the subsequent membrane separation equipment. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] The core of this invention lies in solving the problem of "flocculation" caused by a large influx of wastewater into sedimentation tanks during peak concrete production periods, through the combined use of an intelligent coordinated protection system, diversion baffles, and a flow-stabilizing grid structure. Simultaneously, it provides pre-protection for membrane separation equipment, preventing excessively turbid wastewater from flowing in and causing blockages.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A concrete production equipment with a wastewater reuse system includes a No. 1 sedimentation tank and a control box. A diversion baffle and a flow stabilizing grid structure located to the right of the diversion baffle are fixedly installed on the left side of the No. 1 sedimentation tank. A wastewater inlet pipe connected to the left end of the No. 1 sedimentation tank is fixedly connected to it.

[0010] The flow stabilizing grid structure includes a grid frame fixedly installed in the No. 1 sedimentation tank, multiple flow stabilizing grids are set in the grid frame, a pressure sensing structure is embedded in the lower left side of the flow stabilizing grid, and a grid adjustment structure that drives and regulates the flow stabilizing grid is installed at the front end of the grid frame.

[0011] The control box is equipped with an intelligent coordination protection system, which includes a coordination protection processing unit. The input end of the coordination protection processing unit is connected to a flow rate monitoring unit and a steady flow status feedback unit, and the output end of the coordination protection processing unit is connected to a steady flow gap control unit.

[0012] The input of the flow velocity monitoring unit is connected to the signal of the water flow sensor installed on the sewage inlet pipe, the input of the steady flow state feedback unit is connected to the signal of the pressure sensing structure, and the output of the steady flow gap control unit is connected to the signal of the bar screen adjustment structure.

[0013] Furthermore, the pressure sensing structure includes a sensing nest embedded in the lower left side of the flow stabilizing grid. The sensing nest is filled with a buffer medium. Trigger blocks are fixedly connected to the middle of the left and right inner walls of the sensing nest. The input end of the flow stabilizing state feedback unit is connected to the trigger block signal.

[0014] Furthermore, the front and rear ends of the flow stabilizer are fixedly connected with grid rotating rods. The end of the grid rotating rod away from the flow stabilizer extends to the outside of the grid frame and is rotatably connected to the grid frame. The grid adjustment structure cooperates with the grid rotating rod located on the front side.

[0015] Furthermore, the grille adjustment structure includes a drive frame fixedly installed at the front end of the grille frame, an adjustment rack slidably installed on the left inner wall of the drive frame, the outer end of the front grille rotating rod extends into the drive frame, and the outer end of the grille rotating rod is fixedly connected to a linkage gear that meshes with the adjustment rack.

[0016] An arc-shaped elastic sleeve is provided on the inner wall of the drive frame. The lower right side of the arc-shaped elastic sleeve is fixedly installed on the inner wall of the drive frame. The lower left side of the arc-shaped elastic sleeve slides with the inner wall of the drive frame and is fixedly connected to the upper end of the adjusting rack. Drive electromagnetic blocks are fixedly connected to the lower sides of the left and right inner walls of the arc-shaped elastic sleeve. An auxiliary elastic wire is fixedly connected between the two drive electromagnetic blocks. The output end of the current stabilization gap control unit is connected to the drive electromagnetic block signal.

[0017] Furthermore, a guide post is fixedly connected to the rear side of the left end of the arc-shaped elastic sleeve, and an arc-shaped guide groove is opened on the inner wall of the drive frame, with the guide post slidably set in the arc-shaped guide groove.

[0018] The rear end of the adjusting rack is fixedly connected to the anti-detachment slider, and a long sliding groove is opened on the inner wall of the drive frame, in which the anti-detachment slider is slidably set.

[0019] Furthermore, the input end of the coordinated protection treatment unit is also connected to the wastewater reuse parameter unit and the command control unit. The input ends of the wastewater reuse parameter unit and the command control unit are both connected to the touch panel on the control box.

[0020] The output of the coordinated protection and treatment unit is also connected to a wastewater reuse display unit and an abnormality warning unit. The output of the wastewater reuse display unit is connected to the touch panel on the control box, and the output of the abnormality warning unit is connected to the alarm on the control box.

[0021] Optionally, a second sedimentation tank is provided at the right end of the first sedimentation tank, and a membrane separation device is provided at the right end of the second sedimentation tank. A sedimentation inlet pipe is fixedly connected to the left end of the second sedimentation tank, and the sedimentation inlet pipe connects the first sedimentation tank and the second sedimentation tank. A membrane separation inlet pipe is fixedly connected to the left end of the membrane separation device, and the membrane separation inlet pipe connects the second sedimentation tank and the membrane separation device.

[0022] A three-way diverter is sealed on the sedimentation inlet pipe, and an electric three-way regulating valve is sealed on the membrane separation inlet pipe. The electric three-way regulating valve and the three-way diverter are connected through a return pipe. The output of the coordinated protection treatment unit is also connected to a return protection control unit, and the output of the return protection control unit is connected to the electric three-way regulating valve.

[0023] Furthermore, a turbidity sensor is fixedly installed on the membrane separation inlet pipe, and the turbidity sensor is located on the left side of the electric three-way regulating valve. The input end of the coordinated protection treatment unit is also connected to the sewage turbidity monitoring unit, and the input end of the sewage turbidity monitoring unit is connected to the turbidity sensor signal.

[0024] Furthermore, the output of the coordinated protection and treatment unit is also connected to a wastewater monitoring activation unit, and the output of the wastewater monitoring activation unit is connected to the turbidity sensor signal.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the advantages of this invention are:

[0027] (1) This solution, through the cooperation of intelligent coordination protection system, diversion baffle and flow stabilizing grid structure, can accurately control the flow rate of concrete sewage entering No. 1 sedimentation tank. When the flow rate is too slow, it ensures smooth sewage introduction, while when the flow rate is too fast, it generates deceleration and flow stabilization function, effectively adapting to the intermittency and fluctuation of concrete production, avoiding laminar flow disorder and "running floc" phenomenon in No. 1 sedimentation tank due to excessive water inflow. At the same time, combined with the application of pressure sensing structure, it can monitor and provide feedback on the flow stabilization effect in real time, which not only ensures the effectiveness of deceleration and flow stabilization, but also enables intelligent dynamic control of the flow stabilization grid gap, significantly improving the adaptability to changes in inflow flow rate, effectively preventing the problem of water turbidity increase and water quality deterioration in the No. 1 sedimentation tank area, thereby improving the treatment efficiency and recycling benefits of concrete sewage.

[0028] (2) By combining the three-way diversion pipe, the electric three-way regulating valve and the backflow protection control unit, the membrane separation equipment can be protected. When the influent flow rate is fast, the sewage entering the membrane separation equipment can be backflowed and retreated in time, so as to avoid the sewage with more suspended impurities from clogging the membrane separation equipment, ensuring the effectiveness of the membrane separation equipment application, playing the role of pre-protection of the membrane separation equipment, reducing the maintenance cost of the sewage reuse system, and promoting the economic benefits of its application. Attached Figure Description

[0029] Figure 1 This is a topology diagram of the wastewater reuse system of the present invention;

[0030] Figure 2 This is the control logic diagram of the intelligent coordinated protection system of the present invention;

[0031] Figure 3 Axonometric drawing showing the No. 1 sedimentation tank, No. 2 sedimentation tank, and membrane separation equipment of the present invention;

[0032] Figure 4 The diagram shows the state changes of the diversion baffle and flow stabilizing grid structure of the present invention during application.

[0033] Figure 5 This is a front cross-sectional view of the flow stabilizing grid structure of the present invention when it is fully closed;

[0034] Figure 6 This is a fully open front sectional view of the flow stabilizing grid structure of the present invention;

[0035] Figure 7 This is a front cross-sectional view of the flow stabilization grid structure of the present invention during flow stabilization regulation;

[0036] Figure 8 This is a diagram showing the change in the monitoring state of the pressure sensing structure of the present invention during deceleration and flow stabilization.

[0037] Figure 9 An exploded view showing the combination of the flow stabilizing grid structure and the pressure sensing structure of this invention;

[0038] Figure 10 This is a front sectional view of the grille adjustment structure of the present invention;

[0039] Figure 11 For the present invention Figure 10 Enlarged view of a portion of point A in the middle;

[0040] Figure 12 The first sedimentation tank, the second sedimentation tank, and the membrane separation equipment of the present invention are shown in the main view.

[0041] Explanation of the labels in the diagram:

[0042] 1. Sedimentation Tank No. 1; 11. Wastewater Inlet Pipe; 12. Flow Sensor; 2. Sedimentation Tank No. 2; 21. Sedimentation Inlet Pipe; 22. Three-way Diversion Pipe; 3. Membrane Separation Equipment; 31. Membrane Separation Inlet Pipe; 32. Electric Three-way Regulating Valve; 33. Turbidity Sensor; 4. Diversion Baffle; 5. Flow Stabilizing Grille Structure; 51. Grille Frame; 52. Flow Stabilizing Grille; 53. Grille Rotating Rod; 6. Pressure Sensing Structure; 61. Sensing Nest; 62. Trigger Block; 63. Buffer Medium; 7. Grille Adjustment Structure; 71. Drive Frame; 72. Linkage Gear; 73. Adjustment Rack; 74. Arc-shaped Elastic Sleeve; 75. Drive Electromagnetic Block; 751. Auxiliary Elastic Wire. Detailed Implementation

[0043] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0044] Example 1

[0045] Please see Figure 1 - Figure 12 The concrete production equipment with a wastewater reuse system includes a No. 1 sedimentation tank 1 and a control box. A diversion baffle 4 and a flow stabilizing grid structure 5 located on the right side of the No. 1 sedimentation tank 1 are fixedly installed on the left side. A wastewater inlet pipe 11 connected to the left end of the No. 1 sedimentation tank 1 is fixedly connected to it, and the wastewater inlet pipe 11 cooperates with the diversion baffle 4.

[0046] The flow stabilizing grid structure 5 includes a grid frame 51 fixedly installed in the No. 1 sedimentation tank 1. Multiple flow stabilizing grids 52 are provided in the grid frame 51. A pressure sensing structure 6 is embedded in the lower left side of the flow stabilizing grid 52. A grid adjustment structure 7 that drives and regulates the flow stabilizing grid 52 is installed at the front end of the grid frame 51.

[0047] The control box is equipped with an intelligent coordination protection system, which includes a coordination protection processing unit. The input end of the coordination protection processing unit is connected to a flow rate monitoring unit and a steady flow status feedback unit, and the output end of the coordination protection processing unit is connected to a steady flow gap control unit.

[0048] The input of the flow velocity monitoring unit is connected to the signal of the water flow sensor 12 installed on the sewage inlet pipe 11. The input of the flow stabilization feedback unit is connected to the signal of the pressure sensing structure 6. The output of the flow stabilization gap control unit is connected to the signal of the bar screen control structure 7. Through the cooperation of the intelligent coordination protection system, the diversion baffle 4 and the flow stabilization bar screen structure 5, the flow velocity of the concrete sewage entering the No. 1 sedimentation tank 1 can be precisely controlled. When the flow velocity is too slow, the sewage is smoothly introduced. When the flow velocity is too fast, the flow stabilization function is generated, which effectively adapts to the intermittent and fluctuating nature of concrete production and avoids laminar turbulence and "flocculent run" phenomenon in the No. 1 sedimentation tank 1 due to excessively fast water intake. At the same time, combined with the application of the pressure sensing structure 6, the flow stabilization effect can be monitored and fed back in real time. This not only ensures the effectiveness of the flow stabilization effect, but also enables intelligent dynamic control of the flow stabilization gap of the flow stabilization bar screen 52, which significantly improves the adaptability to changes in the inlet flow velocity and effectively prevents the problem of water turbidity increase and water quality deterioration in the No. 1 sedimentation tank 1 area. This improves the treatment efficiency and recycling benefits of concrete sewage.

[0049] Please see Figure 2 and Figure 8The pressure sensing structure 6 includes a sensing nest 61 embedded in the lower left side of the flow stabilizing grid 52. The sensing nest 61 is made of an elastic material, such as polyurethane elastomer, nitrile rubber, or hydrogenated nitrile rubber, preferably polyurethane elastomer. The sensing nest 61 is filled with a buffer medium 63, which can be any of air, inert gas, or water. The filling saturation of the buffer medium 63 is in the range of 60% to 70%, which can assist the elastic effect of the sensing nest 61 and resist the impact of the sewage flow on the sensing nest 61. At the same time, when the impact of the sewage flow is large, the sensing nest 61 deforms in conjunction with the sensing nest 61, causing the trigger block 62 to contact and trigger, thereby realizing the pressure sensing of the sewage flow. The water flow velocity monitoring and feedback function is achieved by fixing trigger blocks 62 in the middle of the left and right inner walls of the sensing nest 61. The input end of the steady flow state feedback unit is connected to the signal of the trigger blocks 62. The cooperation between the trigger blocks 62 and the steady flow state feedback unit can monitor and provide feedback on the actual effect of the gap adjustment of the steady flow grid 52 in real time during the deceleration and steady flow process, providing data support for subsequent intelligent dynamic control. This not only enhances the adaptability of the intelligent coordination and protection system to the intermittent and fluctuating characteristics of concrete production, but also improves the control effect of the influent flow velocity more precisely. It effectively avoids the laminar flow turbulence and "running floc" phenomenon inside the No. 1 sedimentation tank 1 caused by excessive flow velocity, thereby significantly enhancing the stability and reliability of the wastewater reuse system in treating concrete wastewater.

[0050] Please see Figure 9 - Figure 11 Both ends of the flow stabilizer bar 52 are fixedly connected to bar rotating rods 53. The end of the bar rotating rod 53 away from the flow stabilizer bar 52 extends to the outside of the bar frame 51 and is rotatably connected to the bar frame 51. The bar adjusting structure 7 cooperates with the bar rotating rod 53 located on the front side. The inner walls of the first sedimentation tank 1 at both the front and rear sides are provided with mounting grooves that cooperate with the bar rotating rod 53 and the bar adjusting structure 7 respectively. Sealing gaskets are also provided on the mounting grooves. While ensuring the effectiveness of the fixed installation of the bar frame 51, the bar rotating rod 53 and the bar adjusting structure 7 can be installed in a concealed manner, avoiding direct contact between sewage and the bar rotating rod 53 and the bar adjusting structure 7, thereby improving the durability of the bar rotating rod 53 and the bar adjusting structure 7. While ensuring the effectiveness of the rotation of the flow stabilizer bar 52 on the bar frame 51, the bar rotating rod 53 can also achieve the automatic control of the flow stabilizer bar 52 through cooperation with the bar adjusting structure 7, thereby achieving the purpose of intelligent dynamic regulation and improving the automation and intelligence level of the sewage reuse system.

[0051] Please see Figure 2 and Figure 9 - Figure 11The grille adjustment structure 7 includes a drive frame 71 fixedly installed at the front end of the grille frame 51. An adjustment rack 73 is slidably installed on the left inner wall of the drive frame 71. The outer end of the front grille rotating rod 53 extends into the drive frame 71, and the outer end of the grille rotating rod 53 is fixedly connected to a linkage gear 72 that meshes with the adjustment rack 73.

[0052] The effective meshing length of the adjusting rack 73 is defined as L, the center distance between the uppermost and lowermost linkage gears 72 is defined as H, and the pitch circle diameter of the linkage gear 72 is defined as R. L satisfies the relationship: L=N(H+0.5R), where N is a multiple and the value of N ranges from 1.3 to 1.5, to ensure that the up and down drive of the adjusting rack 73 can effectively drive the linkage gear 72 to rotate.

[0053] When the adjusting rack 73 moves to the lowest point, the linkage gear 72 drives the flow stabilizing grid 52 to fully open through the grid rotating rod 53. That is, the flow stabilizing grid 52 can be kept fully open by the gravity of the adjusting rack 73 itself, ensuring the normal flow of sewage inlet and thus reducing energy consumption during water intake. When the adjusting rack 73 moves to the highest point, the linkage gear 72 drives the flow stabilizing grid 52 to fully close through the grid rotating rod 53. The adjusting rack 73 needs to be driven and controlled to achieve the closure of the flow stabilizing grid 52 and realize the controllability of the deceleration and flow stabilization effect.

[0054] An arc-shaped elastic sleeve 74 is provided on the inner wall of the drive frame 71. The arc-shaped elastic sleeve 74 can be made in the form of a bellows. The lower right end of the arc-shaped elastic sleeve 74 is fixedly mounted on the inner wall of the drive frame 71, and the lower left end of the arc-shaped elastic sleeve 74 slides against the inner wall of the drive frame 71 and is fixedly connected to the upper end of the adjusting rack 73. A drive electromagnetic block 75 is fixedly connected to the lower sides of both inner walls of the arc-shaped elastic sleeve 74. An auxiliary elastic wire 751 is fixedly connected between the two drive electromagnetic blocks 75. The elasticity of the auxiliary elastic wire 751 is... The function ensures that the two driving electromagnetic blocks 75 are kept constantly far apart, and under the elastic action of the arc-shaped elastic sleeve 74, it ensures the support and limiting effect on the adjusting rack 73. The output end of the flow stabilization gap control unit is connected to the driving electromagnetic block 75. The cooperation between the driving electromagnetic block 75 and the flow stabilization gap control unit can realize the reciprocating driving action of the adjusting rack 73, thereby realizing the automatic control of the gap of the flow stabilization grid 52, which not only ensures the effectiveness of deceleration and flow stabilization, but also ensures the response speed and efficiency of dynamic control.

[0055] Please see Figure 9 - Figure 11A guide post is fixedly connected to the rear side of the left end of the arc-shaped elastic sleeve 74. An arc-shaped guide groove is opened on the inner rear wall of the drive frame 71. The guide post is slidably set in the arc-shaped guide groove. The setting of the guide post and the arc-shaped guide groove can effectively guide the driving effect of the drive electromagnetic block 75. While ensuring the driving effectiveness of the drive electromagnetic block 75, it can also promote the effectiveness of the arc-shaped elastic sleeve 74 to drive the adjustment rack 73 to move, and ensure the linkage effect.

[0056] The rear end of the adjusting rack 73 is fixedly connected to an anti-detachment slider. The anti-detachment slider can be dovetail-shaped or T-shaped. It can cooperate with the long slide groove to ensure the sliding effectiveness of the adjusting rack 73, while also ensuring the stability of the adjusting rack 73 on the drive frame 71. The inner rear wall of the drive frame 71 is provided with a long slide groove. The shape of the long slide groove adapts to the change of the anti-detachment slider. When the anti-detachment slider is selected as a dovetail shape, the long slide groove is a dovetail groove. When the anti-detachment slider is selected as a T-shaped shape, the long slide groove is a T-shaped groove. The anti-detachment slider is slidably set in the long slide groove. The cooperation between the anti-detachment slider and the long slide groove can guide and restrict the movement direction of the adjusting rack 73, and also limit the range of movement of the adjusting rack 73, avoiding the situation where the adjusting rack 73 and the linkage gear 72 completely disengage, thus ensuring the effectiveness of the adjusting rack 73.

[0057] Please see Figure 1 - Figure 3 The input of the coordinated protection and treatment unit is also connected to the wastewater reuse parameter unit and the command control unit. The input of the wastewater reuse parameter unit and the command control unit are both connected to the touch panel on the control box.

[0058] The output of the coordinated protection and treatment unit is also connected to a wastewater reuse display unit and an abnormality warning unit. The output of the wastewater reuse display unit is connected to the touch panel on the control box, and the output of the abnormality warning unit is connected to the alarm on the control box. Technicians can input relevant parameters of concrete production and concrete wastewater reuse to the wastewater reuse parameter unit through the touch panel. The relevant parameters of concrete production include, but are not limited to, concrete production cycle, production volume per cycle, water consumption per unit production volume, and wastewater volume per unit production volume. The relevant parameters of concrete wastewater reuse include, but are not limited to, influent flow rate standard range, water turbidity standard range, and wastewater flow rate per cycle. The wastewater reuse parameter unit converts these parameter data and transmits them to the coordinated protection and treatment unit. The coordinated protection and treatment unit analyzes and processes these data to facilitate subsequent control and application.

[0059] Technicians input relevant control commands to the command control unit via the touch panel. The command control unit can feed back the command data to the coordination and protection processing unit. The coordination and protection processing unit generates corresponding control actions based on the commands, such as manually adjusting the gap of the flow stabilizing grille 52 and handling abnormal feedback.

[0060] During the operation of the coordinated protection and treatment unit, it transmits relevant control data to the wastewater reuse display unit. The wastewater reuse display unit displays the operating data of sedimentation tank 1, sedimentation tank 2, and membrane separation equipment 3 to technicians via a touch panel, as well as the relevant control data of the flow stabilizing grid 52. This allows technicians to adaptively adjust the wastewater reuse parameters based on the displayed data, thereby promoting the stability and reliability of the wastewater reuse system in treating concrete wastewater. Furthermore, if abnormal data occurs during the operation of the coordinated protection and treatment unit, the alarm can be activated through the abnormality warning unit to issue a warning to the technicians, enabling them to handle the abnormality in a timely manner.

[0061] Please see Figure 1 - Figure 12 When the wastewater reuse system is applied in concrete production equipment, the concrete wastewater flows into the No. 1 sedimentation tank 1 through the wastewater inlet pipe 11. First, the concrete wastewater is buffered and diverted by the diversion baffle 4, and the hard impurities in the wastewater are promoted to fall to the bottom of the tank. Then, it is guided into the No. 1 sedimentation tank 1 through the flow stabilizing grid structure 5, which effectively reduces the interference of the wastewater entering the laminar flow inside the No. 1 sedimentation tank 1. In addition, the water flow sensor 12 on the wastewater inlet pipe 11 can monitor the inlet water flow rate and transmit the wastewater flow rate data to the coordination and protection treatment unit through the flow rate monitoring unit. The coordination and protection treatment unit judges the inlet water flow rate.

[0062] When the water flow velocity is determined to be within the normal range, the coordinated protection and treatment unit does not generate any control action. At this time, the adjusting rack 73, under the action of gravity, drives the flow stabilizing grid 52 to remain fully open through the linkage gear 72 and the grid rotating rod 53, so as to ensure that all sewage can enter the No. 1 sedimentation tank 1 and improve the efficiency of sewage entering the No. 1 sedimentation tank 1.

[0063] When the water flow velocity is determined to be too high and exceeds the normal range, the coordinated protection unit sends a control command to the flow stabilization gap control unit. The flow stabilization gap control unit energizes the drive electromagnetic block 75, causing an attractive electromagnetic force between the two drive electromagnetic blocks 75. Due to the fixed setting at the right end of the arc-shaped elastic sleeve 74, the position of the drive electromagnetic block 75 on the right side is limited, allowing the drive electromagnetic block 75 on the left side to move towards the drive electromagnetic block 75 on the right side. Under the guidance of the guide column and the arc-shaped guide groove, the arc-shaped elastic sleeve 74 and the auxiliary... The elastic wire 751 generates a synchronous contraction to the right, which drives the adjusting rack 73 to move upward. The adjusting rack 73 drives the linkage gear 72 to rotate in the forward direction, so that the linkage gear 72 drives the flow stabilizing grid 52 to rotate in a closed manner through the grid rotating rod 53. The rotation is set at an inclination, forming a deceleration and flow stabilization state of the flow stabilizing grid 52. In this way, by increasing the inlet water resistance, the speed and impact of sewage entering the No. 1 sedimentation tank 1 can be reduced, avoiding it from disturbing the laminar flow inside the No. 1 sedimentation tank 1 and causing the "floc" phenomenon, thus ensuring the sewage treatment effect of the No. 1 sedimentation tank 1.

[0064] When the flow stabilizer 52 is in a deceleration and flow stabilization state, limiting the flow velocity of sewage, the sewage will continuously impact the pressure sensing structure 6 on the flow stabilizer 52. When the impact of the sewage can cause the sensing nest 61 to produce a large deformation, the two trigger blocks 62 inside the sensing nest 61 will come into contact under the action of the sewage impact force. The flow stabilization state feedback unit will transmit the trigger signal to the coordination and protection processing unit. The coordination and protection processing unit will determine that the deceleration and flow stabilization gap control is effective at this time. At the same time, in order to take into account the sewage inflow efficiency, the coordination and protection processing unit will slowly open the flow stabilization gap control unit, so that the flow stabilization gap control unit reduces the current entering the driving electromagnetic block 75. The electromagnetic attraction between the two driving electromagnetic blocks 75 will change slowly. Then, under the action of gravity of the adjusting rack 73, and the elasticity of the arc elastic sleeve 74 and the auxiliary elastic wire 751, the flow stabilization gap control unit will reduce the current entering the driving electromagnetic block 75. Under the effect of the recovery, the adjusting rack 73 moves slowly downward. Driven by the reverse rotation of the adjusting rack 73 on the linkage gear 72, the linkage gear 72 drives the flow stabilizing grid 52 to gradually open through the grid rotating rod 53. The obstruction effect of the flow stabilizing grid 52 on the sewage inlet gradually decreases. During this process, the flow stabilizing state feedback unit continuously monitors the contact state of the trigger block 62. When the sewage impact force can no longer act on the sensing nest 61, causing the two trigger blocks 62 to continuously contact and trigger, the flow stabilizing state feedback unit transmits the non-triggered data to the coordination and protection processing unit. The coordination and protection processing unit causes the flow stabilizing gap control unit to maintain the current current output stability to ensure the stability of the driving electromagnetic block 75 and the adjusting rack 73, so that the flow stabilizing grid 52 maintains the tilt angle unchanged. Thus, while achieving the buffering of the inlet flow rate by the flow stabilizing grid 52, it also maintains the sewage inlet efficiency.

[0065] When the impact force of the sewage is insufficient to cause significant deformation of the sensing nest 61, the two trigger blocks 62 within the sensing nest 61 remain in a constant open state. The flow stabilization feedback unit transmits the untriggered signal to the coordination and protection processing unit. The coordination and protection processing unit determines that the flow stabilization gap control effect on the flow stabilization grid 52 is inadequate at this time. The coordination and protection processing unit transmits a slow closing control command to the flow stabilization gap control unit, causing the flow stabilization gap control unit to increase the current entering the driving electromagnetic block 75. This causes the electromagnetic attraction between the two driving electromagnetic blocks 75 to slowly increase. The arc-shaped elastic sleeve 74 and the auxiliary elastic wire 751 undergo rightward contraction deformation, driving the adjusting rack 73 to slowly move upward. Then, driven by the reverse rotation of the adjusting rack 73 on the linkage gear 72, the linkage gear 72 passes through the grid. The rotating rod 53 drives the flow stabilizing grid 52 to slowly close and rotate, gradually increasing the obstruction of the flow stabilizing grid 52 to the sewage inlet. During this process, the flow stabilizing state feedback unit continuously monitors the state of the trigger block 62. When the sewage impact gradually increases to the point that it can act on the sensing nest 61, causing the two trigger blocks 62 to come into contact, the flow stabilizing state feedback unit transmits the trigger data to the coordination and protection processing unit. The coordination and protection processing unit causes the flow stabilizing gap control unit to maintain the current output stability, so as to ensure the stability of the driving electromagnetic block 75 and the adjusting rack 73, so that the flow stabilizing grid 52 maintains the tilt angle unchanged. Thus, while achieving the buffering of the inlet flow rate of the flow stabilizing grid 52, it also maintains the sewage inlet efficiency, effectively realizing the dynamic control of the flow stabilizing gap of the flow stabilizing grid 52 to decelerate, and can adapt to different concrete sewage conditions.

[0066] Subsequently, the coordination and protection unit continuously and adaptively adjusts the flow stabilization gap control unit based on the data transmitted by the flow stabilization status feedback unit and the flow velocity monitoring unit. This effectively avoids interference with the laminar flow in sedimentation tank 1 caused by fluctuations in the flow velocity of concrete wastewater and prevents the "running floc" phenomenon. It also improves the adaptability to changes in influent flow velocity, prevents the increase in turbidity and deterioration of water quality in sedimentation tank 1 area, and thus improves the treatment efficiency and recycling benefits of concrete wastewater.

[0067] During the process of the coordinated protection processing unit dynamically regulating the flow stabilizing grid 52 through the flow stabilizing gap control unit, when it is determined that the flow stabilizing deceleration control is required, the flow stabilizing gap control unit drives the electromagnetic block 75 to make the flow stabilizing grid 52 almost closed. However, the flow stabilizing state feedback unit still transmits the non-triggered data of the trigger block 62 to the coordinated protection processing unit. The coordinated protection processing unit determines that the gap control of the flow stabilizing grid 52 is abnormal or the sensing nest 61 is damaged.

[0068] Alternatively, when it is determined that sewage needs to be released, the flow stabilization gap control unit drives the electromagnetic block 75 to make the flow stabilization grid 52 almost open, while the flow stabilization state feedback unit still transmits the trigger data of the trigger block 62 to the coordination protection processing unit. The coordination protection processing unit determines that the flow stabilization grid 52 has a gap blockage abnormality at this time.

[0069] Furthermore, the coordination and protection unit activates the alarm through the abnormality warning unit to send an abnormality warning signal to the technicians. The coordination and protection unit also displays the abnormality judgment data to the touch panel through the wastewater reuse display unit, so that the technicians can deal with the abnormality in a timely manner and ensure the effectiveness of the wastewater reuse system in treating concrete wastewater.

[0070] Example 2

[0071] Please see Figure 1 - Figure 12 This embodiment is an improvement on embodiment 1. As an optional functional application, the concrete production equipment with a sewage reuse system is provided. The right end of the No. 1 sedimentation tank 1 is provided with a No. 2 sedimentation tank 2 that works with it. The right end of the No. 2 sedimentation tank 2 is provided with a membrane separation device 3 that works with it. The left end of the No. 2 sedimentation tank 2 is fixedly connected to a sedimentation inlet pipe 21, and the sedimentation inlet pipe 21 connects the No. 1 sedimentation tank 1 and the No. 2 sedimentation tank 2. The left end of the membrane separation device 3 is fixedly connected to a membrane separation inlet pipe 31, and the membrane separation inlet pipe 31 connects the No. 2 sedimentation tank 2 and the membrane separation device 3.

[0072] A three-way diverter pipe 22 is sealed and installed on the sedimentation inlet pipe 21, and an electric three-way regulating valve 32 is sealed and installed on the membrane separation inlet pipe 31. The electric three-way regulating valve 32 and the three-way diverter pipe 22 are connected through a return pipe. The output end of the coordinated protection treatment unit is also connected to a return protection control unit. The output end of the return protection control unit is connected to the electric three-way regulating valve 32. The cooperation of the three-way diverter pipe 22, the electric three-way regulating valve 32 and the return protection control unit can realize the protection function of the membrane separation equipment 3. When the inlet flow rate is fast, the sewage before entering the membrane separation equipment 3 is returned and retreated in time to avoid the problem of clogging of the membrane separation equipment 3 by sewage with more suspended impurities. This ensures the effectiveness of the membrane separation equipment 3 and plays a role in the pre-protection of the membrane separation equipment 3, reducing the maintenance cost of the sewage reuse system and promoting its economic benefits.

[0073] Please see Figure 1 - Figure 3 and Figure 12A turbidity sensor 33 is also fixedly installed on the membrane separation inlet pipe 31, and the turbidity sensor 33 is located to the left of the electric three-way regulating valve 32. The input end of the coordinated protection treatment unit is also connected to the sewage turbidity monitoring unit. The input end of the sewage turbidity monitoring unit is connected to the signal of the turbidity sensor 33. The coordination of the coordinated protection treatment unit and the turbidity sensor 33 achieves a further protection and guarantee for the membrane separation equipment 3. It works in conjunction with the flow rate monitoring unit to achieve a dual protection effect, further preventing sewage with excessive turbidity from entering the membrane separation equipment 3. It can also improve the intelligent function of recirculation and reprocessing, and make a basis-based selection of recirculation to ensure the efficiency of sewage treatment and improve the safety and stability of the continuous application of the membrane separation equipment 3.

[0074] Please see Figure 1 - Figure 3 and Figure 12 The output of the coordinated protection treatment unit is also connected to the wastewater monitoring start-up unit. The output of the wastewater monitoring start-up unit is connected to the turbidity sensor 33. The wastewater monitoring start-up unit can control the start-up frequency of the turbidity sensor 33. While ensuring the safety of the membrane separation equipment 3, it avoids energy loss and performance damage caused by continuous start-up of the turbidity sensor 33, thereby promoting the durability of the turbidity sensor 33.

[0075] Please see Figure 1 - Figure 12 When the wastewater inflow velocity transmitted by the flow velocity monitoring unit to the coordinated protection and treatment unit is high and exceeds the set range, the coordinated protection and treatment unit also controls the wastewater monitoring start-up unit to start the turbidity sensor 33 to continuously monitor the turbidity of the wastewater entering the membrane separation inlet pipe 31. The turbidity sensor 33 transmits its monitoring data to the wastewater turbidity monitoring unit, which in turn transmits the turbidity data to the coordinated protection and treatment unit. The coordinated protection and treatment unit then determines the state of the wastewater entering the membrane separation inlet pipe 31 from the No. 2 sedimentation tank based on the turbidity data.

[0076] When the turbidity of the wastewater exceeds the set value, it is determined that a "flocculation" phenomenon has occurred in sedimentation tank 1. Sedimentation tanks 1 and 2 have not effectively treated the suspended impurities, and therefore cannot introduce them into the membrane separation device 3. The coordination protection unit controls the backflow protection control unit, which in turn controls the electric three-way regulating valve 32 to allow the wastewater in sedimentation tank 2 that has been fed into the membrane separation inlet pipe 31 to be reintroduced into sedimentation tank 2 through the backflow pipe, the three-way diversion pipe 22, and the sedimentation inlet pipe 21. This allows for further sedimentation treatment of the wastewater with excessive turbidity, preventing it from entering the membrane separation device 3 and causing blockage, thus effectively ensuring the safety of the membrane separation device 3.

[0077] When the turbidity of the sewage is within the set value, it is determined that the sewage sedimentation treatment in sedimentation tank 1 and sedimentation tank 2 is normal. Therefore, the backflow protection control unit and the electric three-way regulating valve 32 are not controlled, so that the sewage in sedimentation tank 2 can effectively enter the membrane separation equipment 3 through the membrane separation inlet pipe 31.

[0078] Subsequently, when the wastewater flow rate transmitted by the flow rate monitoring unit to the coordination protection and treatment unit is normal or no wastewater enters, the coordination protection and treatment unit controls the turbidity sensor 33 to shut down through the wastewater monitoring activation unit, so that it does not generate continuous monitoring function. This reduces energy consumption and effectively reduces performance damage from continuous use, improves the durability of the turbidity sensor 33, and thus effectively reduces the application cost of the wastewater reuse system and promotes the benefits of concrete wastewater reuse.

[0079] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A concrete production equipment with a wastewater reuse system, comprising a sedimentation tank (1) and a control box, characterized in that: A diversion baffle (4) and a flow stabilizing grid structure (5) located on the right side of the diversion baffle (4) are fixedly installed on the left side of the No. 1 sedimentation tank (1). A sewage inlet pipe (11) connected to the left end of the No. 1 sedimentation tank (1) is fixedly connected to it. The flow stabilizing grid structure (5) includes a grid frame (51) fixedly installed in the No. 1 sedimentation tank (1), a plurality of flow stabilizing grids (52) are provided in the grid frame (51), a pressure sensing structure (6) is embedded in the lower left side of the flow stabilizing grid (52), and a grid adjustment structure (7) that drives and regulates the flow stabilizing grid (52) is installed at the front end of the grid frame (51). The control box is equipped with an intelligent coordination protection system, which includes a coordination protection processing unit. The input end of the coordination protection processing unit is connected to a flow rate monitoring unit and a steady flow status feedback unit, and the output end of the coordination protection processing unit is connected to a steady flow gap control unit. The input end of the flow velocity monitoring unit is connected to the water flow sensor (12) installed on the sewage inlet pipe (11), the input end of the steady flow state feedback unit is connected to the pressure sensing structure (6), and the output end of the steady flow gap control unit is connected to the bar screen adjustment structure (7). The No. 1 sedimentation tank (1) is equipped with a No. 2 sedimentation tank (2) at the right end, and a membrane separation device (3) is equipped with it at the right end. The No. 2 sedimentation tank (2) is fixedly connected to a sedimentation inlet pipe (21) at the left end, and the sedimentation inlet pipe (21) connects the No. 1 sedimentation tank (1) and the No. 2 sedimentation tank (2). The membrane separation device (3) is fixedly connected to a membrane separation inlet pipe (31) at the left end, and the membrane separation inlet pipe (31) connects the No. 2 sedimentation tank (2) and the membrane separation device (3). A three-way diverter pipe (22) is sealed and installed on the sedimentation inlet pipe (21), and an electric three-way regulating valve (32) is sealed and installed on the membrane separation inlet pipe (31). The electric three-way regulating valve (32) and the three-way diverter pipe (22) are connected through a return pipe. The output end of the coordinated protection treatment unit is also connected to a return protection control unit. The output end of the return protection control unit is connected to the electric three-way regulating valve (32) via a signal. The pressure sensing structure (6) includes a sensing nest (61) embedded in the lower left side of the flow stabilizing grid (52). The sensing nest (61) is filled with a buffer medium (63). A trigger block (62) is fixedly connected to the middle of the left and right inner walls of the sensing nest (61). The input end of the flow stabilizing state feedback unit is signal connected to the trigger block (62). The flow stabilizing grid (52) is fixedly connected to grid rotating rods (53) at both ends. The end of the grid rotating rod (53) away from the flow stabilizing grid (52) extends to the outside of the grid frame (51) and is rotatably connected to the grid frame (51). The grid adjustment structure (7) cooperates with the grid rotating rod (53) located on the front side.

2. The concrete production equipment with a wastewater reuse system according to claim 1, characterized in that: A turbidity sensor (33) is also fixedly installed on the membrane separation inlet pipe (31), and the turbidity sensor (33) is located to the left of the electric three-way regulating valve (32). The input end of the coordinated protection treatment unit is also connected to the sewage turbidity monitoring unit, and the input end of the sewage turbidity monitoring unit is connected to the turbidity sensor (33) signal.

3. A concrete production equipment with a wastewater reuse system according to claim 2, characterized in that: The output of the coordinated protection treatment unit is also connected to a sewage monitoring start-up unit, and the output of the sewage monitoring start-up unit is connected to the signal of the turbidity sensor (33).

4. A concrete production equipment with a wastewater reuse system according to claim 1, characterized in that: The grid adjustment structure (7) includes a drive frame (71) fixedly installed at the front end of the grid frame (51). An adjustment rack (73) is slidably installed on the left inner wall of the drive frame (71). The outer end of the grid rotating rod (53) located on the front side extends into the drive frame (71), and a linkage gear (72) that meshes with the adjustment rack (73) is fixedly connected to the outer end of the grid rotating rod (53). An arc-shaped elastic sleeve (74) is provided on the inner wall of the drive frame (71). The lower right side of the arc-shaped elastic sleeve (74) is fixedly installed on the inner wall of the drive frame (71). The lower left side of the arc-shaped elastic sleeve (74) slides with the inner wall of the drive frame (71) and is fixedly connected to the upper end of the adjusting rack (73). A drive electromagnetic block (75) is fixedly connected to the lower left and right inner walls of the arc-shaped elastic sleeve (74). An auxiliary elastic wire (751) is fixedly connected between the two drive electromagnetic blocks (75). The output end of the current stabilizing gap control unit is signal connected to the drive electromagnetic block (75).

5. A concrete production equipment with a wastewater reuse system according to claim 4, characterized in that: The left rear end of the arc-shaped elastic sleeve (74) is fixedly connected to a guide post, and the inner rear wall of the drive frame (71) is provided with an arc-shaped guide groove, and the guide post is slidably disposed in the arc-shaped guide groove. The rear end of the adjusting rack (73) is fixedly connected to the anti-detachment slider, and the inner rear wall of the drive frame (71) is provided with a long sliding groove, and the anti-detachment slider is slidably disposed in the long sliding groove.

6. A concrete production equipment with a wastewater reuse system according to claim 1, characterized in that: The input terminal of the coordinated protection treatment unit is also connected to a wastewater reuse parameter unit and an instruction control unit. The input terminals of the wastewater reuse parameter unit and the instruction control unit are both connected to the touch panel on the control box. The output of the coordinated protection treatment unit is also connected to a wastewater reuse display unit and an abnormality warning unit. The output of the wastewater reuse display unit is connected to the touch panel on the control box, and the output of the abnormality warning unit is connected to the alarm on the control box.

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